US789622A - Means for attaching boiler-tubes to the tube-sheets. - Google Patents

Means for attaching boiler-tubes to the tube-sheets. Download PDF

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Publication number
US789622A
US789622A US21843704A US1904218437A US789622A US 789622 A US789622 A US 789622A US 21843704 A US21843704 A US 21843704A US 1904218437 A US1904218437 A US 1904218437A US 789622 A US789622 A US 789622A
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United States
Prior art keywords
tube
boiler
end portion
tubes
sheets
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Expired - Lifetime
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US21843704A
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Henry Lowell Mccullough
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Priority to US21843704A priority Critical patent/US789622A/en
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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
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
    • F16L41/082—Non-disconnectible joints, e.g. soldered, adhesive or caulked joints
    • 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
    • Y10T29/49373—Tube joint and tube plate structure
    • 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
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49938—Radially expanding part in cavity, aperture, or hollow body
    • Y10T29/4994—Radially expanding internal tube

Definitions

  • the invention relates to steam-boilers; and its object is to provide a new and improved means for attaching the boiler-tubes to the heads of the tube-sheets and arranged to pre vent leakage due to unequal contraction and expansion of the tubes and the tube-sheets.
  • Figure 1 is a side elevation, partly in section, of a blank boiler-tube.
  • Fig. 2 is a like view of the boiler-tube.
  • Fig. 3 is a similar view of the same in position in the tube-sheet and prior to expanding the tube, and
  • Fig. 4 is a like view of the completed structure or after expanding the tube and forming an internal and external bead thereon.
  • the boilertube A has its end portion A thickened in an inward direction and for a length somewhat in excess of the thickness of the tube-sheet B, which latter has an opening B, into which fits the end portion A, as plainly indicated in Fig.
  • the end portion A is formed on its peripheral face with one or more annular grooves A, spaced apart to leave one or more annular ridges A and a shoulder A".
  • the wall of the opening B in the tube-sheet B is provided with annular grooves B, corresponding in shape and position to the ridges A so that when the end portion A is in position in the opening B and the end portion is expanded in the usual manner by suitable tools then the ridges A enter and it the grooves B and the shoulder A becomes an annular bead butting against the inner face of the tube-sheet B.
  • the projecting terminal of the end portion A is formed into an annular head A, (see Fig. 4,) butting against the outer face of the tubesheet B, so that the latter is engaged at both the inner and outer faces by beads A A.
  • the ridges A are preferably rectangular in cross-section, as plainly illustrated in the drawings, so that when an unequal expansion and contraction of the boiler-tube and the tube-sheet takes place in either a longitudinal or a diametrical direction then the said ridges still remain in contact with the walls of their grooves in the tube-sheet B to prevent leakage.
  • Fig. 4 the structure is shown in its completed form or after the specially-constructed end portion of the tube has been expanded within the opening therefor in the tube-sheet.
  • a boiler-tube having its end portion of reduced internal diameter, and provided externally of said end portion with spaced annular grooves and an annular ridge between the grooves, the outer faces of the ridge and tube being substantially in the same plane.
  • boiler-tube having its wall uniformly thickened at the end portion to reduce the interior diameter of the end portion, the latter having external spaced annular grooves, leaving an annular ridge between the grooves.
  • a boiler-tube having its wall uniformly thickened at the end portion to reduce the interior diameter of the end portion, the latter having external spaced annular grooves, leaving a plurality of spaced annular ridges.
  • a boiler-tube having its end portion of reduced internal diameter, and provided externally of said end portion with annular grooves and an annular ridge between the grooves, the outer faces of the ridge and tube being substantially in the same plane; combined to this specification in the presence of two sub- With a tube-sheet provided with an opening scribing Witnesses. having in the Walls thereof an annular groove adapted to receive said ridge on expanding" HENRY LOWELL MQCULLOUGH' 5 the said end portion of the tube Within said lVitncsses:

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Description

PATENTED MAY 9, 1905.
H. L. MGOULLGUGH.
MEANS FOR ATTAGHING BOILER TUBES TO THE TUBE SHEETS.
APPLICATION FILED JULY 27, .1904.
WI T/VE S8158 ATTOH/VE Y8 NITED STATES Patented May 9, 1905.
PATENT OFFICE.
HENRY LOWELL MOGULLOUGH, OF CROPSEY, ILLINOIS.
SPECIFICATION forming part of Letters Patent No. 789,622, dated May 9, 1905.
Application filed July 27,1904. Serial No. 218,487.
To (tZl whom it may concern:
Be it known that I, HENRY LOWELL Mo- CULLOUGH, a citizen of the United States, and a resident of Cropsey, in the county of Mc- Lean and State of Illinois, have invented a new and Improved Means for Attaching Boiler- Tubes to theTube-Sheets, of which the following is a full, clear, and exact description.
The invention relates to steam-boilers; and its object is to provide a new and improved means for attaching the boiler-tubes to the heads of the tube-sheets and arranged to pre vent leakage due to unequal contraction and expansion of the tubes and the tube-sheets.
The invention consists of novel features and parts and combinations of the same, as will be more fully described hereinafter and then pointed out in the claims.
A practical embodiment of the invention is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.
Figure 1 is a side elevation, partly in section, of a blank boiler-tube. Fig. 2 is a like view of the boiler-tube. Fig. 3 is a similar view of the same in position in the tube-sheet and prior to expanding the tube, and Fig. 4: is a like view of the completed structure or after expanding the tube and forming an internal and external bead thereon.
In carrying out the invention the boilertube A has its end portion A thickened in an inward direction and for a length somewhat in excess of the thickness of the tube-sheet B, which latter has an opening B, into which fits the end portion A, as plainly indicated in Fig.
The end portion A is formed on its peripheral face with one or more annular grooves A, spaced apart to leave one or more annular ridges A and a shoulder A".
The wall of the opening B in the tube-sheet B is provided with annular grooves B, corresponding in shape and position to the ridges A so that when the end portion A is in position in the opening B and the end portion is expanded in the usual manner by suitable tools then the ridges A enter and it the grooves B and the shoulder A becomes an annular bead butting against the inner face of the tube-sheet B.
The projecting terminal of the end portion A is formed into an annular head A, (see Fig. 4,) butting against the outer face of the tubesheet B, so that the latter is engaged at both the inner and outer faces by beads A A.
The ridges A are preferably rectangular in cross-section, as plainly illustrated in the drawings, so that when an unequal expansion and contraction of the boiler-tube and the tube-sheet takes place in either a longitudinal or a diametrical direction then the said ridges still remain in contact with the walls of their grooves in the tube-sheet B to prevent leakage.
In Fig. 4 the structure is shown in its completed form or after the specially-constructed end portion of the tube has been expanded within the opening therefor in the tube-sheet.
Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A boiler-tube having its end portion of reduced internal diameter, and provided externally of said end portion with spaced annular grooves and an annular ridge between the grooves, the outer faces of the ridge and tube being substantially in the same plane.
2. -A boiler-tube having its wall uniformly thickened at the end portion to reduce the interior diameter of the end portion, the latter having external spaced annular grooves, leaving an annular ridge between the grooves.
3. A boiler-tube having its wall uniformly thickened at the end portion to reduce the interior diameter of the end portion, the latter having external spaced annular grooves, leaving a plurality of spaced annular ridges.
A boiler-tube having its end portion of reduced internal diameter, and provided externally of said end portion with annular grooves and an annular ridge between the grooves, the outer faces of the ridge and tube being substantially in the same plane; combined to this specification in the presence of two sub- With a tube-sheet provided with an opening scribing Witnesses. having in the Walls thereof an annular groove adapted to receive said ridge on expanding" HENRY LOWELL MQCULLOUGH' 5 the said end portion of the tube Within said lVitncsses:
opening. F. 0. STOCKBURGER,
In testimony whereof I have signed my name E. E. LAWS.
US21843704A 1904-07-27 1904-07-27 Means for attaching boiler-tubes to the tube-sheets. Expired - Lifetime US789622A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US21843704A US789622A (en) 1904-07-27 1904-07-27 Means for attaching boiler-tubes to the tube-sheets.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21843704A US789622A (en) 1904-07-27 1904-07-27 Means for attaching boiler-tubes to the tube-sheets.

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2545527A (en) * 1947-06-21 1951-03-20 Babcock & Wilcox Co Method of forming an expanded tube and tube seat connection with an intervening metallic bonding stratum of low fusion temperature
US2686353A (en) * 1950-06-06 1954-08-17 Acme Ind Inc Method of assembling tubes in spacer plates
US2789721A (en) * 1951-07-03 1957-04-23 Babcock & Wilcox Co Closure fitting for high pressure fluid heat exchange apparatus
US4581801A (en) * 1981-08-31 1986-04-15 Westinghouse Electric Corp. Sleeving method
US20090208280A1 (en) * 2008-02-15 2009-08-20 Bekaert Advanced Coatings Multiple grooved vacuum coupling

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2545527A (en) * 1947-06-21 1951-03-20 Babcock & Wilcox Co Method of forming an expanded tube and tube seat connection with an intervening metallic bonding stratum of low fusion temperature
US2686353A (en) * 1950-06-06 1954-08-17 Acme Ind Inc Method of assembling tubes in spacer plates
US2789721A (en) * 1951-07-03 1957-04-23 Babcock & Wilcox Co Closure fitting for high pressure fluid heat exchange apparatus
US4581801A (en) * 1981-08-31 1986-04-15 Westinghouse Electric Corp. Sleeving method
US20090208280A1 (en) * 2008-02-15 2009-08-20 Bekaert Advanced Coatings Multiple grooved vacuum coupling

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