Connection structure of exhaust chamber, support structure of turbine, and gas turbine

摘要

In a gas turbine, an exhaust casing and an exhaust chamber are connected by an exhaust chamber support that can absorb thermal expansion, and the exhaust chamber and an exhaust duct are connected by an exhaust duct support that can absorb thermal expansion. An insulator is mounted on an outer peripheral surface of the exhaust chamber, and the exhaust chamber support and the exhaust duct support are disposed outside the insulator in the form of a plurality of strips. Because the thermal stress at a connection portion of the exhaust chamber is reduced, the durability is enhanced.

主权项

1. A connection structure, comprising:
an exhaust chamber formed in a cylindrical shape; a connection member formed in a cylindrical shape and disposed downstream of the exhaust chamber in a flowing direction of exhaust gas; a support member connecting the exhaust chamber and the connection member, and configured to absorb thermal expansion; a first insulator mounted on an outer peripheral surface of the exhaust chamber; and a second insulator; wherein the connection member includes:
an exhaust duct disposed downstream of the exhaust chamber in the flowing direction of the exhaust gas,an outer shell member formed in a ring shape and disposed at an outer peripheral side of the exhaust chamber, anda high-temperature expansion joint, the exhaust duct is disposed adjacent to the outer shell member, the support member includes an exhaust duct support including a plurality of strips and disposed outside the first insulator, the exhaust duct support has a first end connected to an end of the exhaust chamber and a second end connected to an end of the connection member, the second insulator is mounted on an inner peripheral surface of the exhaust duct, the exhaust chamber and the outer shell member are connected by the exhaust duct support, and the outer shell member and the exhaust duct are connected by the high-temperature expansion joint.