Patent ID: 9518688
Filing Date: 2016-12-13
CPC Classification: F16L,F23C,F23J,Y10T

Claim Text:
1. An expansion joint in a vertical channel suitable for conducting hot particles, the expansion joint comprising: an upper channel portion, the upper channel portion comprising a lower end portion with a lower edge; a lower channel portion sealingly connected by a flexible element connected on an outer side of the vertical channel, the lower channel portion comprising an upper end portion with a horizontally extending upper plane, wherein, in a predetermined vertical level range, the upper end portion telescopically overlaps the lower end portion in a spaced relationship, to permit relative axial and lateral movements of the upper channel portion and the lower channel portion, whereby the upper plane is at a higher level than the lower edge; and a sealing ring arranged on the upper plane so as to be held by gravitation against the upper plane, the sealing ring comprising sealing blocks positioned on an outer circumference of the lower end portion, the sealing blocks being mutually connected together so as to maintain the form of the sealing ring when relative movements between the upper channel portion and the lower channel portion take place.