US1701268A - Tube and sheet connection - Google Patents

Tube and sheet connection Download PDF

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Publication number
US1701268A
US1701268A US511974A US51197421A US1701268A US 1701268 A US1701268 A US 1701268A US 511974 A US511974 A US 511974A US 51197421 A US51197421 A US 51197421A US 1701268 A US1701268 A US 1701268A
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US
United States
Prior art keywords
tube
sheet
tubes
sheet connection
throat
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Expired - Lifetime
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US511974A
Inventor
Lowe Thomas William
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Individual
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Individual
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Priority to US511974A priority Critical patent/US1701268A/en
Application granted granted Critical
Publication of US1701268A publication Critical patent/US1701268A/en
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Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/10—Water tubes; Accessories therefor
    • F22B37/104—Connection of tubes one with the other or with collectors, drums or distributors
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/46—Rod end to transverse side of member

Definitions

  • My invention relates to tube and sheet connections particularly useful for the attachment of water circulation tubes to the tube sheets of locomotive fire boxes.
  • the invention is of especial advantage in fire boxes with very shallow throat sheets (particularly those of the Wooten type), afl'or ing a novel attachment of the arch suptporting water tubes in such a fire box to the ue sheet itself above the throat sheet, high enough to give the tubes a practical firing clearance above the grate.
  • Figure 1 shows a vertical longitudinal section throu h a boiler fire box of the locomotive type wit an arch supporting tube secured to the flue sheet above't-he throat sheet in accordance with my invention.
  • Figure 2 shows an enlarged section through the tube and its joint with the flue s eet.
  • Figure 3 is a fragmentary view, similar to Figure 1, but on a larger scale, showing the attachment of a tube to the tube sheet in accordance with my invention.
  • Figure 1 is shown a locomotive type boiler 4 with quite shallow throat sheet 5.
  • the fire box 6 In the fire box 6 is an arch of fire brick- 7 supported on fore and aft water circulation tubes 8 that are connected to the rear wall 9 of the fire box above the fire door 10, in the usual way.
  • the throat flange 16 is seated and secured in a bevel edged recess or depression 17 in the rear side of the sheet 12, around a hole 18 therein that sheet, but below the fire tubes 13. As shown, this connection is not made by expanding the coincides, in both size and' position, with-the inside of the tube 8.
  • the flange 16 may be secured to the sheet 12 (which is in effect a tube sheet in reference to the tubes 8) by welding.
  • the front face of the flange 16 may be autogenously welded to'the bottom of the recess 17 as by spot-welding; and its bevel-edged periphery ma be fusionwelded to the peripheral'wall of t e recess by means of interposed added metal 20.
  • this added metal 20 is also fused and welded about the tube 8 over the flan e 16, at 21, so as to reinforce and stiffen t e tube and its connection to the sheet 12 at this point, and to afford protect-ion against burning of the joint in service.
  • Fig. 3 the forward ends of the tubes 28 are shown as sloping downward unbent and attached to the tube sheet 5 in the manner 5 illustrated in Figure 2. Though not required for installation or replacement of the tubes 28, openings with screw threaded clean-out plugs 29 are provided in the outside sheet 30 opposite the tube ends. 0

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Description

Patented Feb. 5, 1929.
'rnonAs wnmrnl LOWE, or wminrne, M NITOBA, CANADA.
' rum AND snrmr connncrron.
Application flleddiovember I, 1921. Serial No. 511,974.
My invention relates to tube and sheet connections particularly useful for the attachment of water circulation tubes to the tube sheets of locomotive fire boxes. The invention is of especial advantage in fire boxes with very shallow throat sheets (particularly those of the Wooten type), afl'or ing a novel attachment of the arch suptporting water tubes in such a fire box to the ue sheet itself above the throat sheet, high enough to give the tubes a practical firing clearance above the grate.
How these and still other advantages can be obtained through my invention will. ap-
pear from my description hereinafter of the best embodiment known to me. p
In the drawings, Figure 1 shows a vertical longitudinal section throu h a boiler fire box of the locomotive type wit an arch supporting tube secured to the flue sheet above't-he throat sheet in accordance with my invention.
Figure 2 shows an enlarged section through the tube and its joint with the flue s eet.
Figure 3 is a fragmentary view, similar to Figure 1, but on a larger scale, showing the attachment of a tube to the tube sheet in accordance with my invention.
In Figure 1 is shown a locomotive type boiler 4 with quite shallow throat sheet 5.
In the fire box 6 is an arch of fire brick- 7 supported on fore and aft water circulation tubes 8 that are connected to the rear wall 9 of the fire box above the fire door 10, in the usual way. The forward ends of the tubes 8,
however, are not connected to the flue sheet below the shallow throat sheet 5, as is usual,
but are bent upward slightly at 11 and attached to the flue sheet 12,above the throat flange 16 is seated and secured in a bevel edged recess or depression 17 in the rear side of the sheet 12, around a hole 18 therein that sheet, but below the fire tubes 13. As shown, this connection is not made by expanding the coincides, in both size and' position, with-the inside of the tube 8. The flange 16 may be secured to the sheet 12 (which is in effect a tube sheet in reference to the tubes 8) by welding. As shown, the front face of the flange 16 may be autogenously welded to'the bottom of the recess 17 as by spot-welding; and its bevel-edged periphery ma be fusionwelded to the peripheral'wall of t e recess by means of interposed added metal 20. As 6 illustrated, this added metal 20 is also fused and welded about the tube 8 over the flan e 16, at 21, so as to reinforce and stiffen t e tube and its connection to the sheet 12 at this point, and to afford protect-ion against burning of the joint in service.
,Welding. of the tubes 8 to the rear side of the sheet 12 obviatesall necessity for the presence of plugged openings opposite the forward ends of the tubes,such as would 7 be necessary if the tubes had tobe expanded in the sheet 12 when being installed or replaced,--and is thus important in enabling the tubes to be attached, as shown above the throat sheet 5, where openings could not well be provided. Such a relatively high location of the forward ends of the tubes 8 is of importance in affording a practical firing cleartype.
In Fig. 3, the forward ends of the tubes 28 are shown as sloping downward unbent and attached to the tube sheet 5 in the manner 5 illustrated in Figure 2. Though not required for installation or replacement of the tubes 28, openings with screw threaded clean-out plugs 29 are provided in the outside sheet 30 opposite the tube ends. 0
I claim:
1. The combination with a tube sheet, of a tube with external flange seated andwelded in a lateral recess in the face of said sheet whence said tube extends.
2. The combination with a tube sheet, of a tube with external flange seated and eripherally welded in a lateral recess in t e face of said sheet whence said tube extends.
3. The combination with a tube sheet, of
a tube with external flange seated and weldrecess in the face of said sheet whence said ed in a lateral recess in the face of said sheet tube extends, said flange being secured in the whence said tube extends, with a protecting sheet and reinforced and protected at its rear 1 reinforcement welded about said tube over by a fusion weld of added metal. said flange at the same side of the sheet. In testimony whereof I have hereunto 4. The combination with a tube sheet, of a signed my name tube with external flange seated in a lateral THOMAS WM. LOWE.
US511974A 1921-11-01 1921-11-01 Tube and sheet connection Expired - Lifetime US1701268A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US511974A US1701268A (en) 1921-11-01 1921-11-01 Tube and sheet connection

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US511974A US1701268A (en) 1921-11-01 1921-11-01 Tube and sheet connection

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981000072A1 (en) * 1979-06-28 1981-01-22 Lummus Gmbh Improved method of forming a socket weld

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981000072A1 (en) * 1979-06-28 1981-01-22 Lummus Gmbh Improved method of forming a socket weld

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