Abstract: In combination, for receiving hot gases, a hollow cylindrical body such as a tube or vessel and an inner lining therefor formed of molded-block walls, the inner lining includes a hollow inner cylindrical member having mutually spaced-apart wedge-shaped keystones with radially inwardly narrowing cross section disposed at the outer circumference thereof, metallic anchors respectively fastening the keystones to the inner cylindrical member, and insulating blocks, respectively, entirely filling in the space between each two keystones whereby intermediate layers for connecting the insulating blocks to the keystones are dispensed with.

Abstract: A connector is used to join sheets of fibrous insulation into a duct. The connector includes a base plate to which a plurality of guide flanges and penetrating flanges are connected. The penetrating flanges are spaced from and parallel to the guide flanges, and both the penetrating and guide flanges project from the base plate. In use, the guide flanges bear against the outer surface of the insulating sheet while the knife-like edges of the penetrating flanges penetrate and mesh with the longitudinal fibers of the insulation.

Abstract: A tube made from a rigid material such as PTFE is surrounded by a rigid tubular sheath. The ends of the synthetic material tube are provided with collars which emerge from the rigid sheath, the sheath having on its inner face, adjacent to each collar, a locking member. The locking member forms a substantially annular relief and penetrates a correspondingly shaped groove on the outer surface of the tube of synthetic material.

Abstract: The internal walls of a conduit for conveying fluid carrying marine fouling organisms is lined with a liner of anti-fouling material by inserting an expandable liner of anti-fouling material into the conduit and by expanding the liner radially outwardly into tight engagement with the internal walls with sufficient force to prevent movement of the liner with respect to the conduit upon the fluid flowing therethrough. The liner of anti-fouling material prevents the marine fouling organisms from contacting the internal walls of the conduit and thereby prevents the marine fouling organisms from adhering to or collecting on the internal walls and thereby prevents such marine fouling organisms from constricting the flow of fluid through the conduit. The liner of anti-fouling material may be comprised of a plurality of generally annularly shaped and radially expandable bands of such material which are inserted into the conduit and aligned axially and adjacent each other.

Abstract: A precast insulating material member for insulating a furnace skid rail includes a precast insulating material portion containing a crisscross reinforcing structure. The crisscross reinforcing structure is comprised of a pair of arcuate-shaped rods which are welded together intermediate their ends, each rod having end-eye portions which extend outwardly from the corners of the U-shaped precast insulating member. Positioned about the crisscross-shaped rods are coil members which assist in reinforcing the insulating portion of the member when the reinforcing structure is embedded within the insulating portion. The end-eye portions of the rods provide a mechanical lock of the insulating member to a skid rail pipe when the eye portions are moved into engagement with the outer surface of the skid rail pipe.

Abstract: A multi-layer container which includes a container forming a body of rotation in a tubular or at least partially spherical or conical shape, and having a plurality of layers of weldable sheet metal therewith. The first one of these layers is wrapped directly upon and around the container and the other layers are wrapped around the first layer and one upon the other. Each layer includes at least one joint extending in the longitudinal direction of the container; at least some are only partially filled with welded material.

Abstract: Skid pipe insulation for water cooled support piping in a reheating furnace comprising refractory semicircular complementary sleeves having wire reinforcement embedded in the sleeve refractory material and wherein the wire may be prestretched and located on the inner surface of the refractory insulation to directly contact, metal-to-metal, the outer surface of the cooling pipe. The reinforcing reticulations of the wire are at an angle to the longitudinal axis of the refractory sleeve. Identical semi-circular portions are provided with interconnecting anchoring studs and eyes to reduce inventory and to enable stressing of the wire reinforcement simply by turning nuts of J-bolts, eliminating the requirement for welding of the reinforcing wire to the pipe. Longitudinal shoulders on the refractory protect the bolts from the effect of heat of the slab.

Abstract: Means is provided in a blast joint, for an oil well, whereby the elements of the blast joint are designed and organized to overcome adverse external conditions encountered in the installation of the joint, as well as those encountered in the operation of the joint in the well, to maintain the structure and operability of the blast joint in a condition favorable to its effectiveness in protecting the production tubing from erosion at its production location in the well.

Abstract: A lined pipe including an outer pipe, an inner pipe provided within the outer pipe and extending substantially in the entire length of the outer pipe and the plurality of locking shims provided between the inner surface of the outer pipe and the outer surface of the inner lining pipe formed by injecting a resin into any voids between the inner surface of the outer pipe and the outer surface of the inner lining pipe, letting the resin cure and jarring the lined pipe to break the cured resin into small pieces which wedge between the outer surface of the inner lined pipe and the inner surface of the outer lined pipe whereby the inner lining is locked to the outer pipe.

Abstract: An arrangement by which a jacket of preformed insulating material is readily installed around the outer surface of a water cooled pipe that is to be used as a structural support or a skid rail for a heat treating furnace.

Abstract: Thermal insulation comprised of fiberglass boards or batts having relatively small diameter fiberglass fibers either bound or unbound is wound about the lading container pressure vessel of a tank truck, trailer or rail car. As the insulation is wound about a longitudinal section of the vessel, the insulation is squeezed from its free height to a lesser height to increase the density of the insulation and also permit passage of the outer jacket. The squeezing is preferably accomplished by wrapping each layer of insulation with a continuous wire mesh. The tension is maintained with the use of a long rod intertwined in the wire mesh, which rod is withdrawn after a section of the outer jacket is over a section of the vessel thereby permitting the insulation to expand and substantially fill the void between the vessel and outer jacket.

Abstract: The invention provides a blast joint which comprises basically an extended series of short cylindrical rings preferably rectangular in longitudinal axial section, composed of an abrasion resistant material such as cemented tungsten carbide, and disposed coaxially in contact with each other between end retaining rings mounted upon a supporting steel tube which comprises a single section or joined sections of a production tube.

Abstract: A metal tubular supporting member in a furnace sheathed by refractory sheathing comprising an inner layer of fibrous refractory material and an outer layer of refractory tiles held in place by metal links which are secured together around the furnace member and have radial studs which extend through the inner layer into socket holes in the tiles so that the metal fittings can first be secured to the furnace member and then covered by the fibrous refractory material and the tiles which are engaged with the radial studs.

Abstract: A precast reinforced insulating member and a method of manufacturing same. The reinforced insulating member is used for covering a furnace pipe or the like and comprises a body of insulating material, a plurality of reinforcing coil members and weldable lugs secured at each end of the reinforcing coil members. The body of insulating material has an arcuate shaped inner surface adapted to extend in intimate contact with the surface of a furnace tube in use and a pair of transverse side faces. The reinforcing coil members are embedded in the body and extend circumferentially thereof at longitudinally spaced intervals along the length of the body. Each of the coil members has oppositely disposed ends thereof disposed at adjacent side faces of the body. Passages open through the body between the inner and outer surfaces thereof adjacent each end of each reinforcing coil member. The weldable lugs are secured to each end of the reinforcing coil member.

Abstract: A pressure vessel with an alloyed steel wall and having at least one ring of weldable steel secured thereon and wherein a temperature control jacket associated with said vessel is welded to said ring.

Abstract: A clamping device comprises a body portion having a pair of parallel flanges secured to opposite sides thereof and a slot formed through one end of the body portion. A ring is pivotally mounted on the flanges and suitably sized to freely pivot over the one end of the body portion whereby a first end of a strap may be inserted through the ring and reverse folded under the strap. A second end of the strap is then inserted through the slot and is pulled to tighten the strap about an article, such as an insulated pipe. The point whereat the ring is pivotally mounted on the body portion is then pivoted into over-center relationship relative to the point whereat the second end of the strap engages the slot to superimpose the body portion over the second end of the strap to tightly clamp the same about the article.

Abstract: An insulated pipe is disclosed comprising a fiber felt batt or first layer secured to the pipe inner surface with studs protruding therethrough this first layer, a high temperature resistant metal shield mounted on the studs and contiguous to the first layer, and a metal grating reinforced erosion resistant castable refractory mounted over all and attached to the tops of the studs for providing an efficient, high temperature and shock resistant, internally insulated pipe.

Abstract: Pipe insulating units are disclosed which can be slipped radially over the pipe. The units are formed such that two adjacent pieces interlock to form a set which completely surrounds the pipe and which has parallel faces which are abutted by the parallel faces of adjacent sets. The units and sets are then held together by bolting or other means. Each unit comprises a circular piece of insulating material having a hole in the center thus forming an annular disc. This annular disc has a portion of the annulus omitted with this omitted portion having sides which are parallel to each other and which are tangent to the periphery of the hole in the center. The sides of this omitted portion extend outwardly to the periphery of the disc. Formed integrally therewith on one face of the disc is an outwardly extending portion in the area bonded by extensions of the parallel sides of the omitted portion and on the opposite of the center hole from the omitted portion.

Abstract: Thermal insulation for vessels and piping within the reactor containment area of nuclear power plants is disclosed. The thermal insulation of this invention can be readily removed and replaced from the vessels and piping for inservice inspection, can withstand repeated wettings and dryings, and can resist high temperatures for long periods of time.

Abstract: Insulating members such as plastic foamed boards or panels are positioned on curved surfaces by affixing the panels or planks to strap members attached to and positioned adjacent the surface to be insulated. This technique is particularly suitable for the insulation of tanks and like containers.

Abstract: An insulation covering for the protection of cylindrical bodies exposed to high thermal and mechanical stresses is provided by the assembly of flexible resilient ring shaped insulation elements, the elements being comprised of fibrous refractory materials such as aluminum silicate, silica, alumina or glass. The insulation elements are assembled in a stacked array and are then compressed between rigid, or adjustable metal bands, to give a firm body of insulation which surrounds and protects the enclosed cylindrical body. One side of the ring shaped insulation elements may be severed to allow opening the insulation elements for installation around the cylindrical body, this modification being employed when the insulation elements cannot be placed over one of the ends of the body.

Abstract: A gas riser apparatus and method for conducting gas from a source of supply to a delivery point such as a meter or the like. The gas riser apparatus is defined by a double walled conduit including an inner tubular member and an outer tubular member. Sealing structure is provided at the double walled conduit for the purpose of sealing the riser apparatus. The method of the invention is directed to method steps for conducting gas from a source of supply below ground level to a delivery point above ground level.

Abstract: Readily installable, highly efficient insulating structures for affixation to bodies requiring insulation comprise successive sheets of closely spaced heat resistive metal foil configured to maintain the intersheet spacing under the stress of gravity and other external forces. Each sheet of foil includes a plurality of corrugations which extend through part but not all of the gaps between adjacent sheets to minimize convection, and which in one embodiment abut corrugations of adjacent sheets to maintain the intersheet spacing. In one embodiment the corrugations are V-shaped in cross section and extend along the length of the sheet on one side thereof.

Abstract: This invention relates to a composite pipeline to be used in a submerged condition, usually in deep water. In accordance with this invention, the composite pipeline comprises a pipeline through which a fluid flows, e.g., oil, gas or a slurry; to provide for electrolytic protection, the pipeline includes a suitable coating or wrapping; finally, to enable the pipeline to be maintained in a submerged condition, an outer coating of concrete is provided about the wrapping. Further and in accordance with this invention, the concrete coating is integrally bonded to the pipeline in such fashion that the three element structure so provided can be said to be a composite structure rather than one made up of three separate elements. Because the composite structure pipeline is structurally one, it is possible to use a lighter weight of material in the pipeline with the result that a saving of as much as two-thirds of the pipeline weight is achieved.

Abstract: A thermal insulation composite includes at least a first metallic skin sheet, and a plurality of non-combustible metallic filaments randomly interlocked to form a wool and affixed to said first skin sheet. A second metallic skin sheet may be affixed to said wool and said first sheet, or the second skin sheet may be a surface of the structure to be insulated. A fluid is present in the interstices of the filaments and in the zone between the skin sheets. Each of the filaments has a significant length to cross-sectional diameter ratio to minimize its thermal conductivity. The filaments also preferably have a circular cross section to minimize the area of contact and hence the heat conducted between adjacent filaments. In this manner, the conductivity of the wool is made primarily dependent upon the thermal conductivity of the fluid in the interstices of the filaments. Heat transmission by radiation is inhibited by providing a plurality of radiation shields interposed between multiple layers of the wool.

Abstract: A structure which may be in the form of a furnace skid comprises a metal pipe encased with prefabricated sections each consisting of a backing member anchored to a refractory layer with an insulating layer in between.

Abstract: A length of insulation material is wrapped about an article to be insulated. A layer of fabric is affixed to the insulation material, one end of the fabric being of a length to overlap the opposite end thereof. Fastening means on the overlapped ends of the fabric provide a secure connection of the fabric about the insulation material.

Abstract: A method and apparatus for enclosing air entry sections of an evaporative cooler. The cooler cover is fabricated as cooperating planar elements having interlockable segments along juxtaposed edges. The panels interlock to tightly envelope the cooler when the cover is assembled and when the final two juxtaposed edges of the assembled cover are brought together. An insulative pad on the interior face of each panel seals the underlying air entry section of the cooler against inclement weather.