US20140346723A1 - Apparatus for Joining Pipe Sections - Google Patents
Apparatus for Joining Pipe Sections Download PDFInfo
- Publication number
- US20140346723A1 US20140346723A1 US14/457,079 US201414457079A US2014346723A1 US 20140346723 A1 US20140346723 A1 US 20140346723A1 US 201414457079 A US201414457079 A US 201414457079A US 2014346723 A1 US2014346723 A1 US 2014346723A1
- Authority
- US
- United States
- Prior art keywords
- pipe
- sections
- abutting
- bladder
- inflatable bladder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
- B23K37/0531—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor internal pipe alignment clamps
-
- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
- B23K9/0282—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections
- B23K9/0286—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections with an electrode moving around the fixed tube during the welding operation
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/035—Seam welding; Backing means; Inserts with backing means disposed under the seam
- B23K9/0354—Seam welding; Backing means; Inserts with backing means disposed under the seam the backing means being expandable
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- 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
- B23K2101/06—Tubes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49998—Work holding
Definitions
- the present invention relates to a method and apparatus for joining sections of pipe. More specifically, this invention relates to a method and device used to secure, position, and join sections of pipe through purge block welding.
- the present invention relates to a method and apparatus to be used when welding two abutting sections of pipe or tubing, and also to purge blocks for establishing a localized inert atmosphere inside two abutting pipe sections in the region of a desired weld joint.
- Modern plants for the processing, refinement, and production of oil, petrochemicals, natural gases and other like materials often take place in a manufacturing facility that employs the use of a network of piping.
- the piping network is a significant component of the facility.
- To produce this network a great many sections of piping or tubing are assembled. This assembly is commonly carried out by welding sections of pipe or tubing to each other, to pipe fittings, and to other components of the network.
- TIG welding A generally well known method of joining two abutting pieces of pipe or tubing in light of these concerns is tungsten inert gas (TIG) welding.
- TIG welding to goal is to establish an inert atmosphere inside two abutting pipe or tubing sections in the region of the desired weld, as well as an inert atmosphere on the outside of the pipe sections in the region of the desired weld joint.
- a known alternative to the above-referenced technique involved the use of purge blocks, dams or plugs, which establish a localized inert atmosphere at the interior surface of a desired weld joint.
- the basic premise to this particular technique has been to plug both ends of the pipes or tubes to be joined.
- Embodiments of the plugs have included both separate and interconnected inflatable plugs or seals. Notwithstanding, the use of these prior art plugs have failed to account for the alignment of two abutting sections of pipe or tubing, including the centering of pipe ends and keeping them stationary.
- the present invention departs from prior art techniques by presenting a new pipe joining method and apparatus that employs an inflatable bladder that both creates a purge block and further positions and centers two abutting sections of pipe or tubing for use in conventional TIG welding.
- the present invention provides a method and apparatus for an improved purge block for use in establishing a localized inert atmosphere inside two abutting pipe sections in the region of a desired weld, as well positioning, aligning, and centering the two abutting pipe sections sought to be joined.
- the present invention comprises an inflatable bladder that can be removable positioned within the ends of two abutting pipe sections.
- the inflatable bladder is comprised of suitable flexible fireproof elastomeric material and a plurality of engaging members.
- the inflatable bladder comprises three sections, a rearward balloon-type portion having a passageway therethrough to allow for the introduction of inert gas, a thicker middle portion having a plurality of apertures circumferentially displaced around the middle portion, and a forward balloon-type portion.
- the middle portion of inflatable bladder is comprised of a plurality of elongated engaging members securely attached and circumferentially displaced about the middle portion of the inflatable bladder.
- the present invention departs from prior art inventions by positioning the elongated engaging members in such a manner where the elongated engaging members are situated between the inside walls of the pipe sections sought to be joined and the inflatable bladder, whereby the elongated engaging members engage and grip the inside walls of the pipe sections sought to be joined.
- Each elongated engaging member may be further equipped with spacing teeth securely attached to each elongated engaging member.
- the inflatable bladder is manually inserted inside two abutting pipe sections, with the spacing teeth serving as a spacing guide between the two abutting pipe section ends.
- Inert gas is then introduced into the inflatable bladder via the passageway of the rearward balloon-type portion, thereby causing the bladder to inflate, which in turns causes the elongated engaging member to engage with the inside walls of the two abutting pipe sections.
- the two abutting pipe sections are aligned, centered, and locked into position.
- Inert gas is continued to be introduced into the inflatable bladder which causes the rearward balloon-type portion and forward balloon-type portion of the inflatable bladder to inflate and create a purge block with a defined chamber having the inside walls of the two abutting pipe sections forming a sidewall and the rearward balloon-type portion and forward balloon-type portion each as an endwall.
- a constant flow of inert gas is introduced into the defined chamber via the plurality of apertures circumferentially displaced around the middle portion of the inflatable bladder
- Joining of the two sections of pipe may then be accomplished via normal TIG welding procedures. Flow in inert gas is then discontinued allowing the bladder to deflate and the elongated engaging members to disengage. The inflatable bladder may then be manually removed.
- FIG. 1 is a side view of the bladder.
- FIG. 2 is a longitudinal cross-sectional view of the bladder.
- FIG. 3 is a side view of the bladder positioned within the ends of two abutting pipe sections.
- FIG. 4 is a side view of an inflated bladder.
- FIG. 5 is a side view of an inflated bladder positioned within the ends of two abutting pipe sections.
- the claimed invention comprises an inflatable bladder 10 .
- the bladder 10 is comprised of a fireproof elastomeric material and elongated engaging members 20 .
- the bladder 10 further comprises three portions, a rearward balloon-type portion 16 , a thicker middle portion 17 , and a forward balloon-type portion 15 .
- Circumferentially disposed about the middle portion 17 is a plurality of elongated engaging members 20 .
- Each elongated engaging member 20 is securely attached to the middle portion 17 and is equipped with a spacing tooth 25 securely attached thereto.
- FIG. 3 is a second embodiment of the claimed invention.
- the bladder 10 is shown positioned within the ends of two abutting sections of pipe 35 , 36 .
- the rearward balloon-type portion 16 is equipped with a passageway 50 to allow for a means 55 of introduction of inert gas into the bladder 10 .
- the bladder 10 is manually positioned inside and between the ends of two abutting sections of pipe 35 , 36 .
- each spacing tooth 25 serves as a guide in spacing the ends of the two abutting sections of pipe 35 , 36 the appropriate distance to allow for optimal TIG welding.
- inert gas is introduced to the bladder 10 via the passageway 50 , causing the bladder 10 to inflate.
- FIG. 5 shows the inflated bladder 10 .
- the bladder 10 inflates, with the elongated engaging members 20 positioned between the inside walls 40 of the two abutting sections of pipe 35 , 36 and the bladder 10 .
- the elongated engaging members 20 engage and grip the internal walls 40 of each abutting sections of pipe 35 , 36 .
- the two sections of pipe 35 , 36 are aligned, centered, and locked into place without any additional measuring or manipulation.
- Inert gas is continued to be introduced into the bladder 10 , thereby causing the rearward balloon-type portion 16 and forward balloon-type portion 15 to inflate, thereby creating a purge block.
- inert gas is introduced into the purge block via the plurality of apertures 30 disposed about the middle portion 17 of the bladder.
- the two sections of pipe 35 , 36 may be welded by conventional TIG welding methods. Once welding is complete, the introduction of inert gas is discontinued, thereby causing the bladder 10 to deflate and the elongated engaging members 20 to disengage. The bladder 10 may then be removed manually.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Arc Welding In General (AREA)
Abstract
The present invention relates to a method and apparatus to be used when welding two abutting sections of pipe or tubing, and also to purge blocks for establishing a localized inert atmosphere inside two abutting pipe sections in the region of a desired weld joint. The present invention comprises an inflatable bladder with elongated engaging members that can be removable positioned within the ends of two abutting pipe sections in order to center the two abutting sections of pipe and create the purge block.
Description
- This application is a continuation of application Ser. No. 12/660,510 filed on Mar. 1, 2010.
- Not applicable
- Not applicable
- The present invention relates to a method and apparatus for joining sections of pipe. More specifically, this invention relates to a method and device used to secure, position, and join sections of pipe through purge block welding.
- The present invention relates to a method and apparatus to be used when welding two abutting sections of pipe or tubing, and also to purge blocks for establishing a localized inert atmosphere inside two abutting pipe sections in the region of a desired weld joint.
- Modern plants for the processing, refinement, and production of oil, petrochemicals, natural gases and other like materials often take place in a manufacturing facility that employs the use of a network of piping. The piping network is a significant component of the facility. To produce this network, a great many sections of piping or tubing are assembled. This assembly is commonly carried out by welding sections of pipe or tubing to each other, to pipe fittings, and to other components of the network.
- Due to the nature of the materials oftentimes being transported through this network of piping, the purity of the welds and the possibility of corrosion sites are concerns that must be addressed. Weld sites are often known to be corrosion sensitive points. Therefore, consistency and efficiency in conducting welds is an extremely important concern in establishing the network of piping referenced above.
- A generally well known method of joining two abutting pieces of pipe or tubing in light of these concerns is tungsten inert gas (TIG) welding. In TIG welding to goal is to establish an inert atmosphere inside two abutting pipe or tubing sections in the region of the desired weld, as well as an inert atmosphere on the outside of the pipe sections in the region of the desired weld joint.
- The general practice in this form of welding has been to fill both pipes or tubing sections, which can be very long, with a protective gas such as argon. Typically, a continuous flow of argon gas is provided throughout the welding operation in order to establish the inert atmosphere near the region of the desired weld. A result of this practice is the consumption of large amounts of argon gas, which in turn causes high costs. Further, this general practice does not address the need and concern for centering the two adjoining pipe sections and keeping them stationary through the welding process. Pipe ends must be centered and aligned in order to effect a good weld and seal. Normally, separate mechanical devices have been used to align and center the pipes.
- A known alternative to the above-referenced technique involved the use of purge blocks, dams or plugs, which establish a localized inert atmosphere at the interior surface of a desired weld joint. The basic premise to this particular technique has been to plug both ends of the pipes or tubes to be joined. Embodiments of the plugs have included both separate and interconnected inflatable plugs or seals. Notwithstanding, the use of these prior art plugs have failed to account for the alignment of two abutting sections of pipe or tubing, including the centering of pipe ends and keeping them stationary.
- The present invention departs from prior art techniques by presenting a new pipe joining method and apparatus that employs an inflatable bladder that both creates a purge block and further positions and centers two abutting sections of pipe or tubing for use in conventional TIG welding.
- The present invention provides a method and apparatus for an improved purge block for use in establishing a localized inert atmosphere inside two abutting pipe sections in the region of a desired weld, as well positioning, aligning, and centering the two abutting pipe sections sought to be joined.
- The present invention comprises an inflatable bladder that can be removable positioned within the ends of two abutting pipe sections. The inflatable bladder is comprised of suitable flexible fireproof elastomeric material and a plurality of engaging members.
- In one embodiment, the inflatable bladder comprises three sections, a rearward balloon-type portion having a passageway therethrough to allow for the introduction of inert gas, a thicker middle portion having a plurality of apertures circumferentially displaced around the middle portion, and a forward balloon-type portion. The middle portion of inflatable bladder is comprised of a plurality of elongated engaging members securely attached and circumferentially displaced about the middle portion of the inflatable bladder. The present invention departs from prior art inventions by positioning the elongated engaging members in such a manner where the elongated engaging members are situated between the inside walls of the pipe sections sought to be joined and the inflatable bladder, whereby the elongated engaging members engage and grip the inside walls of the pipe sections sought to be joined. Each elongated engaging member may be further equipped with spacing teeth securely attached to each elongated engaging member.
- In operation, the inflatable bladder is manually inserted inside two abutting pipe sections, with the spacing teeth serving as a spacing guide between the two abutting pipe section ends. Inert gas is then introduced into the inflatable bladder via the passageway of the rearward balloon-type portion, thereby causing the bladder to inflate, which in turns causes the elongated engaging member to engage with the inside walls of the two abutting pipe sections. As a result, the two abutting pipe sections are aligned, centered, and locked into position.
- Inert gas is continued to be introduced into the inflatable bladder which causes the rearward balloon-type portion and forward balloon-type portion of the inflatable bladder to inflate and create a purge block with a defined chamber having the inside walls of the two abutting pipe sections forming a sidewall and the rearward balloon-type portion and forward balloon-type portion each as an endwall. A constant flow of inert gas is introduced into the defined chamber via the plurality of apertures circumferentially displaced around the middle portion of the inflatable bladder
- Joining of the two sections of pipe may then be accomplished via normal TIG welding procedures. Flow in inert gas is then discontinued allowing the bladder to deflate and the elongated engaging members to disengage. The inflatable bladder may then be manually removed.
-
FIG. 1 is a side view of the bladder. -
FIG. 2 is a longitudinal cross-sectional view of the bladder. -
FIG. 3 is a side view of the bladder positioned within the ends of two abutting pipe sections. -
FIG. 4 is a side view of an inflated bladder. -
FIG. 5 is a side view of an inflated bladder positioned within the ends of two abutting pipe sections. -
- 10 Bladder
- 15 Forward balloon-type portion
- 16 Rearward balloon-type portion
- 17 Middle portion
- 20 Elongated engaging member
- 25 Spacing teeth
- 30 Aperture
- 35, 36 Pipe
- 40 Pipe inside wall
- 50 Opening
- 55 Means for introducing inert gas
- Referring to
FIGS. 1 and 2 , one embodiment of the claimed invention is shown. The claimed invention comprises aninflatable bladder 10. Thebladder 10 is comprised of a fireproof elastomeric material and elongated engagingmembers 20. Thebladder 10 further comprises three portions, a rearward balloon-type portion 16, a thicker middle portion 17, and a forward balloon-type portion 15. Circumferentially disposed about the middle portion 17 is a plurality of elongated engagingmembers 20. Each elongated engagingmember 20 is securely attached to the middle portion 17 and is equipped with aspacing tooth 25 securely attached thereto.FIG. 3 is a second embodiment of the claimed invention. In this embodiment, thebladder 10 is shown positioned within the ends of two abutting sections ofpipe type portion 16 is equipped with apassageway 50 to allow for ameans 55 of introduction of inert gas into thebladder 10. - In operation, the
bladder 10 is manually positioned inside and between the ends of two abutting sections ofpipe FIG. 3 , each spacingtooth 25 serves as a guide in spacing the ends of the two abutting sections ofpipe bladder 10 via thepassageway 50, causing thebladder 10 to inflate.FIG. 5 shows the inflatedbladder 10. As shown, thebladder 10 inflates, with the elongated engagingmembers 20 positioned between theinside walls 40 of the two abutting sections ofpipe bladder 10. The elongated engagingmembers 20 engage and grip theinternal walls 40 of each abutting sections ofpipe pipe - Inert gas is continued to be introduced into the
bladder 10, thereby causing the rearward balloon-type portion 16 and forward balloon-type portion 15 to inflate, thereby creating a purge block. Simultaneously, inert gas is introduced into the purge block via the plurality ofapertures 30 disposed about the middle portion 17 of the bladder. Next, the two sections ofpipe bladder 10 to deflate and the elongated engagingmembers 20 to disengage. Thebladder 10 may then be removed manually.
Claims (4)
1. A pipe joining apparatus comprising:
a. An inflatable bladder; and
b. At least one elongated engaging member securely attached and circumferentially displaced about said inflatable bladder such that said elongated engaging member is positioned between the inside walls of abutting pipe sections sought to be joined and said bladder, and further engages the inside walls of said abutting pipe sections.
2. The pipe joining apparatus of claim 1 , wherein said inflatable bladder further comprises:
a. A rearward balloon type portion, a forward balloon type portion, and a middle portion;
b. Said middle portion containing at least one aperture; and
c. A means for introducing an inert gas into said inflatable bladder.
3. The pipe joining apparatus of claim 3 , wherein said elongated engaging member is securely attached to the middle portion of the inflatable bladder.
4. The pipe joining apparatus of claim 4 , wherein said inflatable bladder further comprises a high temperature resistant material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/457,079 US20140346723A1 (en) | 2010-03-01 | 2014-08-11 | Apparatus for Joining Pipe Sections |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/660,510 US8835808B2 (en) | 2010-03-01 | 2010-03-01 | Apparatus for joining sections of pipe |
US14/457,079 US20140346723A1 (en) | 2010-03-01 | 2014-08-11 | Apparatus for Joining Pipe Sections |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/660,510 Continuation US8835808B2 (en) | 2010-03-01 | 2010-03-01 | Apparatus for joining sections of pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
US20140346723A1 true US20140346723A1 (en) | 2014-11-27 |
Family
ID=44504756
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/660,510 Expired - Fee Related US8835808B2 (en) | 2010-03-01 | 2010-03-01 | Apparatus for joining sections of pipe |
US14/457,079 Abandoned US20140346723A1 (en) | 2010-03-01 | 2014-08-11 | Apparatus for Joining Pipe Sections |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/660,510 Expired - Fee Related US8835808B2 (en) | 2010-03-01 | 2010-03-01 | Apparatus for joining sections of pipe |
Country Status (1)
Country | Link |
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US (2) | US8835808B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110595339A (en) * | 2019-08-09 | 2019-12-20 | 上海柏楚电子科技股份有限公司 | Method for measuring center of circular arc symmetric metal pipe |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2944723B1 (en) * | 2009-04-27 | 2011-04-22 | Eurocopter France | TOOLS FOR MAINTAINING LOW-THICK METAL COMPONENTS COMPRISING A HOLLOW STRUCTURE, FOR THEIR WELDING TO ONE BY FRICTION |
US8616432B1 (en) * | 2012-07-31 | 2013-12-31 | Michael Hacikyan | Welding purge dam for high air flow environment |
US9296060B2 (en) * | 2012-11-01 | 2016-03-29 | Michael Hacikyan | Field-customizable inflatable purge dam apparatus |
US10654122B2 (en) | 2016-02-05 | 2020-05-19 | Michael Hacikyan | Gas diffusing water degradable welding purge dam |
US10480544B2 (en) * | 2016-04-19 | 2019-11-19 | The Boeing Company | Bladder assembly and associated bore alignment system and method |
US10413990B2 (en) | 2016-12-01 | 2019-09-17 | Michael Hacikyan | Welding purge dam with apertured purge plates |
CN109759482B (en) * | 2018-12-17 | 2021-07-20 | 巢湖鹏远金属焊管有限公司 | Steel pipe welded welding seam leveling device |
CN109822252A (en) * | 2019-03-29 | 2019-05-31 | 厦门市齐合汽车零部件有限公司 | A kind of pipeline is to spelling welding method |
CN110576244A (en) * | 2019-09-29 | 2019-12-17 | 中国石油天然气集团有限公司 | Full-automatic argon arc welding method for circular weld of heavy-calibre bimetal composite pipe |
CN113714727A (en) * | 2021-08-26 | 2021-11-30 | 新奥新能源工程技术有限公司 | Welding fixer with good stability for steel pipe welding |
CN113579438B (en) * | 2021-08-26 | 2023-01-31 | 中国航发沈阳黎明航空发动机有限责任公司 | Process device for automatically welding cylindrical thin-wall casing circular seam and using method |
CN115070397A (en) * | 2022-07-26 | 2022-09-20 | 广船国际有限公司 | Double-walled pipe go-between equipment auxiliary device |
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---|---|---|---|---|
GB2267545A (en) * | 1992-06-04 | 1993-12-08 | Alh Syst Ltd | Sealing of pipe joints |
US5285817A (en) * | 1989-01-12 | 1994-02-15 | Sika Robotics | Remote-controlled insertion of sheathing in inaccessible manifolds and junctions |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4415114A (en) * | 1981-05-07 | 1983-11-15 | Hallenbeck Emerson | Purge gas unit with cones |
US4916281A (en) * | 1989-02-23 | 1990-04-10 | Haynes International, Inc. | Gas back-purging during welding of pipe |
US5066208A (en) * | 1990-04-05 | 1991-11-19 | Warmerdam Gerard G | Pipe joint testing and grouting unit |
US5100043A (en) * | 1990-11-15 | 1992-03-31 | Hallenbeck Emerson | Purge gas unit with bladders |
US5187343A (en) * | 1991-10-30 | 1993-02-16 | Edwards Thomas W | Purge block for pipe welding |
US5484973A (en) * | 1994-10-20 | 1996-01-16 | Praxair Technology, Inc. | Underbead weld shield method and apparatus |
US5669547A (en) * | 1995-09-27 | 1997-09-23 | Praxair Technology, Inc. | Apparatus and method for supplying inert gas to a welding location |
US6395127B1 (en) * | 1999-04-18 | 2002-05-28 | Entegris, Inc. | Insert for use in conjoining tubular end portions |
-
2010
- 2010-03-01 US US12/660,510 patent/US8835808B2/en not_active Expired - Fee Related
-
2014
- 2014-08-11 US US14/457,079 patent/US20140346723A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5285817A (en) * | 1989-01-12 | 1994-02-15 | Sika Robotics | Remote-controlled insertion of sheathing in inaccessible manifolds and junctions |
GB2267545A (en) * | 1992-06-04 | 1993-12-08 | Alh Syst Ltd | Sealing of pipe joints |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110595339A (en) * | 2019-08-09 | 2019-12-20 | 上海柏楚电子科技股份有限公司 | Method for measuring center of circular arc symmetric metal pipe |
Also Published As
Publication number | Publication date |
---|---|
US20110210112A1 (en) | 2011-09-01 |
US8835808B2 (en) | 2014-09-16 |
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