US2983042A - Tube splitting apparatus - Google Patents

Tube splitting apparatus Download PDF

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Publication number
US2983042A
US2983042A US857241A US85724159A US2983042A US 2983042 A US2983042 A US 2983042A US 857241 A US857241 A US 857241A US 85724159 A US85724159 A US 85724159A US 2983042 A US2983042 A US 2983042A
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US
United States
Prior art keywords
tube
cutter wheels
flanges
splitter
halves
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.)
Expired - Lifetime
Application number
US857241A
Inventor
Charles E Frantz
William E Cawley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
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Individual
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Individual filed Critical Individual
Priority to US857241A priority Critical patent/US2983042A/en
Priority to GB37109/60A priority patent/GB900500A/en
Priority to FR845665A priority patent/FR1282591A/en
Application granted granted Critical
Publication of US2983042A publication Critical patent/US2983042A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D21/00—Machines or devices for shearing or cutting tubes
    • B23D21/02—Machines or devices for shearing or cutting tubes otherwise than in a plane perpendicular to the axis of the tube, e.g. for making mitred cuts, for making bicycle frames
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
    • G21C19/34—Apparatus or processes for dismantling nuclear fuel, e.g. before reprocessing ; Apparatus or processes for dismantling strings of spent fuel elements
    • G21C19/36—Mechanical means only
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors
    • 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
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49352—Repairing, converting, servicing or salvaging

Definitions

  • This invention relates to an apparatus for facilitating removal of a tube from a mass of material in which it is lodged. More particularly it relates to a tube-splitting apparatus.
  • Patent 2,708,656, dated May 17, 1955, disclose a nuclear reactor comprising graphite moderator blocks, internally ribbed coolant tubes extending through the blocks, and jacketed fuel elements of natural uranium laid end to end in the coolant tubes so as to be cooled by water flowing through the tubes and over the elements.
  • the coolant tubes must be replaced, because they have become damaged by overheating or by growth of the fuel elements.
  • the coolant tubes to be replaced are stuck in the moderator, and we have found it advantageous to split process tubes to facil itate their removal.
  • the novel apparatus of the present invention weakens a tube to be removed at diametrally opposed regions and splits the tube at the weakened regions while shaping the edges of the split tube halves into inwardly directed flanges, whereby to reduce the size of the split halves and thus enable them to be dislodged from the graphite moderator.
  • Fig. l is an elevational view, partly in section, of the novel tube-splitting apparatus of the present invention.
  • Fig.2 is a sectional view taken on the line 22 of Fig. l and showing how the apparatus weakens a tube;
  • Fig. 3 is a sectional view taken on the line -33 of Fig. 1 and showing how the apparatus splits and flanges the tube.
  • the present apparatus comprises a guide body 10, a pair of opposed cutter wheels 11 rotatably mounted therein for weakening a tube 12, and-an I-shaped blade 13 attached to the body for splitting the tube 12 into halves and flanging the halves.
  • the body 10 has a main portion 14 which comprises end regions 15 of a diameter slightly less than the internal diameter of the tube 12 and an intermediate region 16 reduced in diameter below that of the end regions 15.
  • the main portion 14 has four equally spaced longitudinal grooves 17, which receive four internal longitudinal ribs 17a of the tube 12. Equally spaced from the grooves 17 are two diametrally opposed channels 18, which extend longitudinally of the main portion 14 of the body 10.
  • slots 19 extend from the channels 18 radially inwardly so as to merge and form a passage through the body 10.
  • the slots 19 and channels. 18 accommodate the cutter wheels -11 which are rotatably mounted in the intermediate region 16 of the body 10 on pins 20 held in the body 10 by set screws 21.
  • the cutter wheels 11 lie generally on a common plane in which the longitudinal axis of the body 10 lies, and rotates about axes perpendicular to said common plane.
  • the cutter wheels 11 extend radially outward beyond the end regions 15 of the body 10 a small amount and penetrate the wall of the tube with- Patented May 9, 1961 out cutting through it.
  • the longitudinal axis of the body i 10 is, of course, generally coincident with the axis of the
  • the body 10 has a reduced bifurcated axial extension 22, in which the blade 13 is attached by bolts 23 in spaced relation to the main portion 14 of the body 10.
  • the blade 13, being I-shaped as previously described, is formed of a leg 24 and flanges 25 at opposite sides of the leg 24.
  • the end of the leg 24 facing the main portion 14 of the body 10 is recessed and cham-fered at opposite sides of the extension 22 as indicated at 26 so as to present two cutting edges 27, which meet the flanges 25 in acute angles and decrease in sharpness as they approach the flanges 25.
  • the tube splitter of the present invention may be pulled through the tube 10 by a cable (not shown) that is connected with the tube splitter by a connecting device 28, which is fully shown and claimed in our copending application Serial No. 857,241, filed December 3, 1959.
  • the connecting device is so constructed that any untwisting of the cable (not shown) due to its pulling the present tube splitter will not be transmitted as a rotating force to the tube splitter.
  • the connecting device 28 has a reduced threaded extension 29 which is removably connected to the body 10 so that the device 28 and cable (not shown) can be disconnected from the present tube splitter by a compressive end thrust on the cable and rotation of the cable and the device 28, as fully disclosed in our aforementioned copending patent application, resulting in unscrewing of the extension 29 from the body 10.
  • the cable and the device 28 are disconnected in this way from the present tube splitter in the event that it is. necessary to back the tube splitter out of the tube 10, because it has become stuck therein.
  • the present tube splitter is pulled through the tube 12 from right to left as viewed in Fig. 1.
  • the internal ribs 17a of the tube 12 and the grooves 17 of! the splitter body 10 receiving the ribs keep the tube splitter from rotating.
  • the cutter wheels 11 partially cut through the tube 12 and thus weaken it. Since the leg 24 of the I-shaped blade 13 is aligned with the cutter wheels 11, the cutting edges 27 of the leg 24 meet the weakened portions of the tube 12 and cut it there, and
  • the leg '24 and flanges 25 shape the tube as it is cut, whereby the tube is split into halves and the edges of the halves are formed into inwardly directed flanges 30.
  • the tube halves thus flanged occupy less space than the uncut tube 12 did and thus are easily dislodged from a hole in a graphite mass 3 1 by being shifted radially inward from the walls of the hole.
  • Apparatus for splitting a tube having internal longitudinal ribs in order to facilitate removal of the tube 7 from a graphite mass in which the tube is lodged comprising a guide body having longitudinal grooves adapted to receive the ribs of the tube, a pair of cutter wheels rotatably mounted in the same plane in the body so as to protrude from opposite sides thereof and an Lshaped blade attached to the body in longitudinally displaced relation to the cutter wheels, the stem of the I extending through the body in the same plane as the cutter wheels, and the flanges of the I being radially outward of the cutter wheels to a small extent.
  • Apparatus -for splitting a tube in order to facilitate removal of the tube from a graphite mass in which the v thereof, and an I-shaped blade attached to the body in longitudinally displaced relation to the cutter wheels, the stem of the I extending through the body in the same plane as the cutter wheels, and the flanges of the I being radially outward of the cutter wheels to a small extent.
  • the guide body having longitudinal channels aligned with the cutter wheels and extending in opposite directions therefrom, the channels accommodating the passage of edge flanges on split halves of the tube produced by the I-shaped blade in the event that the apparatus becomes stuck while 5 splitting the tube and must be backed out of the tube.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Fuel Cell (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Accessories And Tools For Shearing Machines (AREA)

Description

United States Patent Ofiice TUBE SPLI'ITINGAPPARATUS Charles E. and William E. Cawley, Richland, Wash, assignors to the United States of America as represented by the United States Atomic Energy Commission Filed Dec. 3, 1959, Ser. No. 857,241
3 Claims. (Cl. 30-91) This invention relates to an apparatus for facilitating removal of a tube from a mass of material in which it is lodged. More particularly it relates to a tube-splitting apparatus.
Figs. 37, 38, and 39 and columns 42, 43, and 44 of Fermi et a1. Patent 2,708,656, dated May 17, 1955, disclose a nuclear reactor comprising graphite moderator blocks, internally ribbed coolant tubes extending through the blocks, and jacketed fuel elements of natural uranium laid end to end in the coolant tubes so as to be cooled by water flowing through the tubes and over the elements. On occasion, the coolant tubes must be replaced, because they have become damaged by overheating or by growth of the fuel elements. Frequently the coolant tubes to be replaced are stuck in the moderator, and we have found it advantageous to split process tubes to facil itate their removal.
The novel apparatus of the present invention weakens a tube to be removed at diametrally opposed regions and splits the tube at the weakened regions while shaping the edges of the split tube halves into inwardly directed flanges, whereby to reduce the size of the split halves and thus enable them to be dislodged from the graphite moderator.
In the drawings:
' Fig. l is an elevational view, partly in section, of the novel tube-splitting apparatus of the present invention;
Fig.2 is a sectional view taken on the line 22 of Fig. l and showing how the apparatus weakens a tube; and
Fig. 3 is a sectional view taken on the line -33 of Fig. 1 and showing how the apparatus splits and flanges the tube.
The present apparatus comprises a guide body 10, a pair of opposed cutter wheels 11 rotatably mounted therein for weakening a tube 12, and-an I-shaped blade 13 attached to the body for splitting the tube 12 into halves and flanging the halves.
The body 10 has a main portion 14 which comprises end regions 15 of a diameter slightly less than the internal diameter of the tube 12 and an intermediate region 16 reduced in diameter below that of the end regions 15. The main portion 14 has four equally spaced longitudinal grooves 17, which receive four internal longitudinal ribs 17a of the tube 12. Equally spaced from the grooves 17 are two diametrally opposed channels 18, which extend longitudinally of the main portion 14 of the body 10. In the intermediate region 16 of the main portion 14, slots 19 extend from the channels 18 radially inwardly so as to merge and form a passage through the body 10. The slots 19 and channels. 18 accommodate the cutter wheels -11 which are rotatably mounted in the intermediate region 16 of the body 10 on pins 20 held in the body 10 by set screws 21. The cutter wheels 11 lie generally on a common plane in which the longitudinal axis of the body 10 lies, and rotates about axes perpendicular to said common plane. The cutter wheels 11 extend radially outward beyond the end regions 15 of the body 10 a small amount and penetrate the wall of the tube with- Patented May 9, 1961 out cutting through it. The longitudinal axis of the body i 10 is, of course, generally coincident with the axis of the The body 10 has a reduced bifurcated axial extension 22, in which the blade 13 is attached by bolts 23 in spaced relation to the main portion 14 of the body 10. The blade 13, being I-shaped as previously described, is formed of a leg 24 and flanges 25 at opposite sides of the leg 24. The end of the leg 24 facing the main portion 14 of the body 10 is recessed and cham-fered at opposite sides of the extension 22 as indicated at 26 so as to present two cutting edges 27, which meet the flanges 25 in acute angles and decrease in sharpness as they approach the flanges 25.
The tube splitter of the present invention may be pulled through the tube 10 by a cable (not shown) that is connected with the tube splitter by a connecting device 28, which is fully shown and claimed in our copending application Serial No. 857,241, filed December 3, 1959. The connecting device is so constructed that any untwisting of the cable (not shown) due to its pulling the present tube splitter will not be transmitted as a rotating force to the tube splitter. Moreover, the connecting device 28 has a reduced threaded extension 29 which is removably connected to the body 10 so that the device 28 and cable (not shown) can be disconnected from the present tube splitter by a compressive end thrust on the cable and rotation of the cable and the device 28, as fully disclosed in our aforementioned copending patent application, resulting in unscrewing of the extension 29 from the body 10. The cable and the device 28 are disconnected in this way from the present tube splitter in the event that it is. necessary to back the tube splitter out of the tube 10, because it has become stuck therein.
In operation, the present tube splitter is pulled through the tube 12 from right to left as viewed in Fig. 1. The internal ribs 17a of the tube 12 and the grooves 17 of! the splitter body 10 receiving the ribs keep the tube splitter from rotating. The cutter wheels 11 partially cut through the tube 12 and thus weaken it. Since the leg 24 of the I-shaped blade 13 is aligned with the cutter wheels 11, the cutting edges 27 of the leg 24 meet the weakened portions of the tube 12 and cut it there, and
the leg '24 and flanges 25 shape the tube as it is cut, whereby the tube is split into halves and the edges of the halves are formed into inwardly directed flanges 30. The tube halves thus flanged occupy less space than the uncut tube 12 did and thus are easily dislodged from a hole in a graphite mass 3 1 by being shifted radially inward from the walls of the hole.
' It is also understood .that the invention is not to be limited by the details given herein but that it may be modified within the scope of the appended claims.
What is claimed is: 1. Apparatus for splitting a tube having internal longitudinal ribs in order to facilitate removal of the tube 7 from a graphite mass in which the tube is lodged, said apparatus comprising a guide body having longitudinal grooves adapted to receive the ribs of the tube, a pair of cutter wheels rotatably mounted in the same plane in the body so as to protrude from opposite sides thereof and an Lshaped blade attached to the body in longitudinally displaced relation to the cutter wheels, the stem of the I extending through the body in the same plane as the cutter wheels, and the flanges of the I being radially outward of the cutter wheels to a small extent.
2. Apparatus -for splitting a tube in order to facilitate removal of the tube from a graphite mass in which the v thereof, and an I-shaped blade attached to the body in longitudinally displaced relation to the cutter wheels, the stem of the I extending through the body in the same plane as the cutter wheels, and the flanges of the I being radially outward of the cutter wheels to a small extent.
3. The apparatus specified in claim 2, the guide body having longitudinal channels aligned with the cutter wheels and extending in opposite directions therefrom, the channels accommodating the passage of edge flanges on split halves of the tube produced by the I-shaped blade in the event that the apparatus becomes stuck while 5 splitting the tube and must be backed out of the tube.
No references cited.
US857241A 1959-12-03 1959-12-03 Tube splitting apparatus Expired - Lifetime US2983042A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US857241A US2983042A (en) 1959-12-03 1959-12-03 Tube splitting apparatus
GB37109/60A GB900500A (en) 1959-12-03 1960-10-28 Tube splitting apparatus
FR845665A FR1282591A (en) 1959-12-03 1960-12-01 Tube splitting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US857241A US2983042A (en) 1959-12-03 1959-12-03 Tube splitting apparatus

Publications (1)

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US2983042A true US2983042A (en) 1961-05-09

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GB (1) GB900500A (en)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3153281A (en) * 1962-07-18 1964-10-20 Bloomer Robert Percival Cylinder liner splitting tool
US3628246A (en) * 1968-09-06 1971-12-21 Carrier Corp Apparatus for tube removal
US3729806A (en) * 1968-09-06 1973-05-01 Carrier Corp Method for tube removal
US4720211A (en) * 1980-12-02 1988-01-19 British Gas Corporation Apparatus for replacing mains
US4903406A (en) * 1987-12-14 1990-02-27 Schosek William O Pipe splitter
US5098225A (en) * 1990-12-31 1992-03-24 Brooklyn Union Gas Cutting/expanding tool
US5171106A (en) * 1990-12-31 1992-12-15 Brooklyn Union Gas Cutting/expanding tool
US5306101A (en) * 1990-12-31 1994-04-26 Brooklyn Union Gas Cutting/expanding tool
US5439320A (en) * 1994-02-01 1995-08-08 Abrams; Sam Pipe splitting and spreading system
USRE35271E (en) * 1990-05-15 1996-06-11 Consolidated Edison Company Of New York, Inc. Pipe bursting and replacement apparatus
US5544977A (en) * 1994-06-24 1996-08-13 Lone Star Gas Company Polymeric pipe splitter, replacement tool and method
US6305880B1 (en) 1997-01-09 2001-10-23 Wrb Company, Inc. Device and method for trenchless replacement of underground pipe
US6340270B2 (en) * 1998-07-11 2002-01-22 Tracto-Technik Paul Schmidt Spezialmaschinen Apparatus and method for the longitudinal splitting of pipes laid underground
WO2002029304A1 (en) * 2000-10-06 2002-04-11 Tracto-Technik Gmbh Cutting tool for cutting open or bursting pipes
US6430790B1 (en) * 2000-04-26 2002-08-13 Advanced Cutting Technologies, Ltd. Boiler tube flared-end segment peeler tool
US20030044237A1 (en) * 1997-01-09 2003-03-06 Carter Robert Williams Trenchless water pipe replacement device and method
US20040131426A1 (en) * 2001-03-08 2004-07-08 Franz-Josef Puttmann Device for breaking up pipelines
US20050138815A1 (en) * 2003-12-04 2005-06-30 Wolfgang Schmidt Cutting system, device, and method for splitting pipes
US8540458B2 (en) 2011-06-14 2013-09-24 Roodle, Inc. Center hole ram cable puller
US20150020360A1 (en) * 2014-10-09 2015-01-22 Caterpillar Inc. Method of removing a bushing from a machine component
US20220250179A1 (en) * 2019-07-08 2022-08-11 Callidus Capital B.V. Device and method for processing a conduit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3153281A (en) * 1962-07-18 1964-10-20 Bloomer Robert Percival Cylinder liner splitting tool
US3628246A (en) * 1968-09-06 1971-12-21 Carrier Corp Apparatus for tube removal
US3729806A (en) * 1968-09-06 1973-05-01 Carrier Corp Method for tube removal
US4720211A (en) * 1980-12-02 1988-01-19 British Gas Corporation Apparatus for replacing mains
US4738565A (en) * 1980-12-02 1988-04-19 British Gas Corporation Method of replacing mains
US4903406A (en) * 1987-12-14 1990-02-27 Schosek William O Pipe splitter
USRE35271E (en) * 1990-05-15 1996-06-11 Consolidated Edison Company Of New York, Inc. Pipe bursting and replacement apparatus
US5098225A (en) * 1990-12-31 1992-03-24 Brooklyn Union Gas Cutting/expanding tool
US5171106A (en) * 1990-12-31 1992-12-15 Brooklyn Union Gas Cutting/expanding tool
US5306101A (en) * 1990-12-31 1994-04-26 Brooklyn Union Gas Cutting/expanding tool
US5439320A (en) * 1994-02-01 1995-08-08 Abrams; Sam Pipe splitting and spreading system
US5544977A (en) * 1994-06-24 1996-08-13 Lone Star Gas Company Polymeric pipe splitter, replacement tool and method
US6305880B1 (en) 1997-01-09 2001-10-23 Wrb Company, Inc. Device and method for trenchless replacement of underground pipe
US6793442B2 (en) 1997-01-09 2004-09-21 Tric Tools, Inc. Device and method for trenchless replacement of underground pipe
US20050042036A1 (en) * 1997-01-09 2005-02-24 Carter Robert Ward Device and method for trenchless replacement of underground pipe
US6799923B2 (en) * 1997-01-09 2004-10-05 Tric Tools, Inc. Trenchless water pipe replacement device and method
US6524031B2 (en) 1997-01-09 2003-02-25 Wrb Company, Inc. Device and method for trenchless replacement of underground pipe
US20030044237A1 (en) * 1997-01-09 2003-03-06 Carter Robert Williams Trenchless water pipe replacement device and method
US6340270B2 (en) * 1998-07-11 2002-01-22 Tracto-Technik Paul Schmidt Spezialmaschinen Apparatus and method for the longitudinal splitting of pipes laid underground
US6430790B1 (en) * 2000-04-26 2002-08-13 Advanced Cutting Technologies, Ltd. Boiler tube flared-end segment peeler tool
WO2002029304A1 (en) * 2000-10-06 2002-04-11 Tracto-Technik Gmbh Cutting tool for cutting open or bursting pipes
US20040131426A1 (en) * 2001-03-08 2004-07-08 Franz-Josef Puttmann Device for breaking up pipelines
US20050138815A1 (en) * 2003-12-04 2005-06-30 Wolfgang Schmidt Cutting system, device, and method for splitting pipes
US7172370B2 (en) * 2003-12-04 2007-02-06 Tracto-Technik Gmbh Cutting system, device, and method for splitting pipes
US8540458B2 (en) 2011-06-14 2013-09-24 Roodle, Inc. Center hole ram cable puller
US20150020360A1 (en) * 2014-10-09 2015-01-22 Caterpillar Inc. Method of removing a bushing from a machine component
US20220250179A1 (en) * 2019-07-08 2022-08-11 Callidus Capital B.V. Device and method for processing a conduit

Also Published As

Publication number Publication date
GB900500A (en) 1962-07-04

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