Metallic Expansion Joints - Thorburn Flex Inc

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THORBURN FLEXIBLE PIPING SPECIALIST HING-FLEX SERIES "HF" HINGED EXPANSION JOINT SYSTEM Thorburn's Hing-Flex joints are typically used in sets of two or three, to absorb pipe movement in one or more directions in a single plane piping system. Each individual joint in the system is restricted to pure angular rotation by its hinges. However, each pair of hinged joints, separated by a section of piping, will act together to absorb lateral deflection in much the same manner as Thorburn's Dual-Flex universal expansion joint in a single plane application. Thorburn's Hing-Flex hinges are designed to restrain the full pressure thrust of the expansion joint and may be designed to support the weight of piping and equipment, absorb thermal loads, wind loads and other external forces. Thorburn Hing-Flex system permits large movements to be absorbed with minimal anchor forces. Thorburn Hing-Flex is a single expansion joint designed to permit angular rotation in one plane only by the use of a pair of pins through hinge plates attached to the expansion joint ends. FEATURES ■ ■ ■ Angular motion in one plane only Positive control over movement Eliminates pressure thrust forces ■ ■ ■ Transmits external loads Supports dead weight Prevents torsion on bellows ■ ■ ■ No main anchors required Minimum guiding required Low forces on piping system HOT IA PG HING-FLEX HOT PG HING-FLEX IA Thorburn's two hinge system will absorb thermal expansion in one plane as the expansion joints are restricted to angular rotation only and cannot extend or compress. This system relies on the bending deflections of the long horizontal piping legs to absorb the growth in the offset leg. Allow adequate clearance in the (PG) planar guides. Typical Thorburn Triple Hing-Flex system IA = Intermediate Anchor G = Guide PG = Planar Guide IA HOT HING-FLEX HING-FLEX PG HING-FLEX HOT PG IA HOT Thorburn's three hinge system is used where sufficient flexibility is not available in the long piping legs of a two hinge system. It is evident that the added hinge expansion will permit the necessary added angular rotation. Additional planar guides may be required to relieve the hinges of bending forces which may be created by external loads. Thorburn's Hing-Flex expansion joints are designed for absorbation of thermal expansion and wind loads. HOT Page 32
THORBURN FLEXIBLE PIPING SPECIALIST GIM-FLEX SERIES "GF" GIMBAL EXPANSION JOINT SYSTEM Thorburn's Gim-Flex joint is the most reliable expansion joint. It is capable of absorbing angular motion in all planes while retaining many advantages. The construction of a Thorburn Gim-Flex expansion joint incorporates a pair of hinges connected to a common floating Gimbal ring. This type of construction provides for close control of the movement imposed upon the bellows and at the same time can support the dead weight of the system. Wind loading and shear loads are also transmitted through the Gimbal structure. Other advantages include low forces and elimination of pressure thrust on adjacent equipment. Thorburn Gim-Flex expansion joints are either used in pairs or in combination with a Thorburn Hing- Flex expansion joint to absorb complex multi-plane motion in a piping system. Thorburn's Gim-Flex finished assembly used in a high pressure steam piping system FEATURES ■ ■ ■ Angular motion in all planes Positive control over movement Eliminates pressure thrust forces ■ ■ ■ Transmits external loads Supports dead weight Prevents torsion on bellows ■ ■ ■ No main anchor required Minimum guiding required Low forces on piping system GIM-FLEX IA HOT HOT PG HOT G HING-FLEX GIM-FLEX IA The use of Thorburn Gim-Flex expansion joints results in the best system possible to eliminate the effects of thermal growth and lowers both reaction forces and installation costs. Expensive main anchors are eliminated and only minimal guiding is required. To eliminate this, a Thorburn Hing-Flex expansion joint can be installed in the horizontal piping. This type of installation results in the lowest possible forces on the intermediate anchors. IA = Intermediate Anchor G = Guide PG = Planar Guide HOT IA PG GIM-FLEX Final stages in the assembly of a large diameter high pressure/ temperature Gimbal expansion joint Thorburn's Gim-Flex joints are utilized in a pair to absorb the thermal expansion from the two horizontal piping legs. Note that the thermal growth of the vertical legs, however, must be absorbed by deflection of the horizontal piping. IA HOT PG HOT GIM-FLEX Page 33
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Metallic Expansion Joints - Thorburn Flex Inc

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