초록 ▼

The invention relates to improved sealing means for shell and tube heat exchangers which means use only components which are external to the heat exchanger shell to mechanically compress a series of rubber type gaskets and incompressible tube sheets to thereby seal the tube to tube sheet joints and

The invention relates to improved sealing means for shell and tube heat exchangers which means use only components which are external to the heat exchanger shell to mechanically compress a series of rubber type gaskets and incompressible tube sheets to thereby seal the tube to tube sheet joints and the tube sheet to shell joints in such a manner as to precisely control the degree of compression of the rubber type gaskets and eliminate the need for the retightening of bolts by the use of confining elements on the outer periphery of said gaskets.

대표청구항 ▼

A shell and tube heat exchanger sealing means comprising a shell and an extension shell for sealing the tubes within the shell so that fluid flowing from the extension shell into the tubes within the shell is separated from the fluid flowing within the shell, which comprises a shell flange and an ex

A shell and tube heat exchanger sealing means comprising a shell and an extension shell for sealing the tubes within the shell so that fluid flowing from the extension shell into the tubes within the shell is separated from the fluid flowing within the shell, which comprises a shell flange and an extension shell flange, two incompressible tube sheets and a tube sheet gasket with holes therethrough for the tubes, a relatively incompressible tube sheet gasket retainer in circumferential arrangement around the tube sheet gasket and two flange gaskets each with a circumferentially arranged flange gasket retainer adjacent to the shell and extension shell flanges, wherein said flange gaskets include protrusions along an outer circumference thereof and said flange gasket retainers include complementary indentations along an inner circumference thereof, wherein the tube sheet gasket and flange gaskets are thicker than the respective tube sheet gasket retainer and flange gasket retainers so as to compress and radially expand the flange gaskets an amount limited to the radial inner dimension of the flange gasket retainers and compress and radially expand the tube sheet gasket an amount limited to the width and radial inner dimension of the sheet gasket retainer so that said gaskets effectively seal the tubes from the inner shell of the shell and tube heat exchanger and to seal the shell and the extension shell from each other and from the atmosphere upon the application of a compressive force applied by tightening bolts extending through holes radially external to the shell in the shell flange and extension shell flange.