METHOD OF COMPENSATION OF DEFORMATION OF HIGH-TEMPERATURE ROTARY DISC HEAT EXCHANGER Russian patent published in 2020 - IPC F28D19/04 

FIELD: heating equipment.

SUBSTANCE: invention relates to heat engineering and can be used in regenerative rotating disc heat exchangers. In the method of preventing thermal deformations of the frame of a rotating disc heat exchanger by making a cellular structure of the heat exchanger frame, where heat exchange cells are made in form of separate cups, cells are made with external hexagonal surfaces and internal channel, and end disks – from materials having different coefficients of temperature expansion, wherein ratio of coefficients of linear expansion of materials of cold and hot end discs is selected inversely proportional to ratio of increments of average operating temperatures of discs. Heat exchange cells are installed between end discs with at least one point of rigid attachment on each disc, and at least every two points of rigid attachment of cups on adjacent discs are located in diametral plane of section of their bases, located in radial and / or tangential to it plane of section of discs, passing through axis of symmetry of each shell, and the gap between the cups is selected with the possibility of their free mutual radial expansion at the maximum operating temperature. In the rotor to compensate for unavoidable thermal deformations, elastic silicone seals with siliconized pyrographite coating are additionally arranged on the outer surface of the discs on the projection of the gaps between the hexagonal cups, wherein width in circumferential direction of labyrinth seals in housing is more than any size of hexagonal cell in same direction, and speed of mutual movement of seals is greater than rate of cocurrent flow of leakages in gap between them.

EFFECT: higher efficiency of high-temperature rotary disk heat exchanger.

1 cl, 4 dwg