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Title: Welding shield for coupling heaters

Abstract

Systems for coupling end portions of two elongated heater portions and methods of using such systems to treat a subsurface formation are described herein. A system may include a holding system configured to hold end portions of the two elongated heater portions so that the end portions are abutted together or located near each other; a shield for enclosing the end portions, and one or more inert gas inlets configured to provide at least one inert gas to flush the system with inert gas during welding of the end portions. The shield may be configured to inhibit oxidation during welding that joins the end portions together. The shield may include a hinged door that, when closed, is configured to at least partially isolate the interior of the shield from the atmosphere. The hinged door, when open, is configured to allow access to the interior of the shield.

Inventors:
 [1]
  1. (Dickinson, TX)
Publication Date:
Research Org.:
Shell Oil Company (Houston, TX)
Sponsoring Org.:
USDOE
OSTI Identifier:
1014512
Patent Number(s):
7,673,786
Application Number:
U S Patent Application 11/788,826
Assignee:
Shell Oil Company (Houston, TX) ORO
DOE Contract Number:
AC05-00OR2272
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Menotti, James Louis. Welding shield for coupling heaters. United States: N. p., 2010. Web.
Menotti, James Louis. Welding shield for coupling heaters. United States.
Menotti, James Louis. 2010. "Welding shield for coupling heaters". United States. doi:. https://www.osti.gov/servlets/purl/1014512.
@article{osti_1014512,
title = {Welding shield for coupling heaters},
author = {Menotti, James Louis},
abstractNote = {Systems for coupling end portions of two elongated heater portions and methods of using such systems to treat a subsurface formation are described herein. A system may include a holding system configured to hold end portions of the two elongated heater portions so that the end portions are abutted together or located near each other; a shield for enclosing the end portions, and one or more inert gas inlets configured to provide at least one inert gas to flush the system with inert gas during welding of the end portions. The shield may be configured to inhibit oxidation during welding that joins the end portions together. The shield may include a hinged door that, when closed, is configured to at least partially isolate the interior of the shield from the atmosphere. The hinged door, when open, is configured to allow access to the interior of the shield.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2010,
month = 3
}

Patent:

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  • The design of a combination heat transfer panel and wall shield for use with stoves and other radiant heaters is disclosed. The device comprises a case housing two parallel, spaced curtains defining first and second convection chambers. The case is adapted for location either against, or in spaced relation to a structural wall behind a radiant heater. It is formed with a large central opening permitting entrance of radiant energy from the stove, a cold air inlet communicating with the convection chambers either at the lower end of the case or at the sides, and a hot air exhaust communicatingmore » with the upper end of the convection chambers. The outermost curtain may be constructed for adjustment between positions in which it absorbs or reflects radiant energy, as desired.« less
  • S>An inert gas shield is presented for arc-welding materials such as zirconium that tend to oxidize rapidly in air. The device comprises a rectangular metal box into which the welding electrode is introduced through a rubber diaphragm to provide flexibility. The front of the box is provided with a wlndow having a small hole through which flller metal is introduced. The box is supplied with an inert gas to exclude the atmosphere, and with cooling water to promote the solidification of the weld while in tbe inert atmosphere. A separate water-cooled copper backing bar is provided underneath the joint tomore » be welded to contain the melt-through at the root of the joint, shielding the root of the joint with its own supply of inert gas and cooling the deposited weld metal. This device facilitates the welding of large workpieces of zirconium frequently encountered in reactor construction.« less
  • Systems for coupling ends of elongated heaters and methods of using such systems to treat a subsurface formation are described herein. A system may include two elongated heaters with an end portion of one heater abutted or near to an end portion of the other heater and a core coupling material. The core coupling material may extend between the two elongated heaters. The elongated heaters may include cores and at least one conductor substantially concentrically surrounds the cores. The cores may have a lower melting point than the conductors. At least one end portion of the conductor may have amore » beveled edge. The gap formed by the beveled edge may be filled with a coupling material for coupling the one or more conductors. One end portion of at least one core may have a recessed opening and the core coupling material may be partially inside the recessed opening.« less
  • Welding of deep penetration is obtained in a sustrate by a method which comprises first melting the joint portion of the substrates by MIG welding and then focusing a laser beam in the bottom surface of a crater formed in consequence of the MIG welding thereby effecting laser welding of the crater.