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Heat Shields Datasheet

Heat Shields Datasheet
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HEAT SHIELDS USE OF HEAT SHIELDS FOR TEMPERATURE REDUCTION Heat Shields are typically used to reduce the process temperature to which a rupture disc is exposed. This may be necessary when the rupture disc is manufactured from materials which are not capable of withstanding high process temperatures. Heat Shields are used where fluoropolymer or other exotic material liners are required for corrosion resistance or as part of the rupture disc itself in combination with high process temperature. The C.D.C. Heat Shield is constructed as a flat metal component for direct installation between bolted pipe flanges upstream of the rupture disc. It is slotted to allow the transmission of pressure to the rupture disc and to provide full opening upon bursting of the rupture disc. It functions as a barrier restricting the continuous flow of high-temperature gases or vapors. This allows the piping between the Heat Shield and rupture disc to act as a heat sink to the dead space and effectively reduce the temperature to which the rupture disc is exposed. There are many factors which must be considered in evaluating the required length of the spool assembly to achieve an adequate heat sink. Therefore, no single rule can be suitable for all of the possible applications. The actual temperature drop is best determined by the end user taking into consideration the following design parameters. • Total surface area of the spool assembly and rupture disc. • The transmission of heat to rupture disc by radiation, conduction, and convection. DOWNSTREAM RUPTURE DISC OUTLET COMPANION FLANGE GASKETS HOLDER OUTLET CONTINENTAL RUPTURE DISC HOLDER (7I INSERT SHOWN) INLET COMPANION FLANGE HEAT SHIELD** (OPTIONAL LOCATION) HOLDER INLET GASKETS HEAT SHIELD (PREFERRED LOCATION) OUTLET COMPANION FLANGE • Maximum (rated) temperature of the rupture disc. • The maximum expected temperature exposed to the exterior of the assembly. (Note that the rupture disc and spool assembly can not be insulated.) • Attachment of other exterior cooling devices. INLET COMPANION FLANGE • Process media. **For reverse-buckling type rupture discs, the Heat Shield cannot be located directly under the holder inlet. SPOOL ASSEMBLY (AS DETERMINED BY USER)

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Heat Shields are available in the sizes and mating flange classes listed below. Table I. Sizes and Flange Ratings for C.D.C. Heat Shields SIZE (INCHES) (MM) 1 For additional sizes and mating flange classes not shown, consult your Continental Disc representative or the factory. Continental Disc Corporation has representatives located throughout the world. Contact the C.D.C. office nearest you for the authorized representative in your area. CORPORATE HEADQUARTERS Continental Disc Corporation 3160 W. Heartland Drive Liberty, MO 64068-3385 USA Phone: FAX: E-mail: Website: UNITED KINGDOM...

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