Exhaust volute positioning and adjusting device

Abstract

The invention provides an exhaust volute positioning and adjusting device. The exhaust volute positioning and adjusting device comprises a base, a guide key and a positioning device. The base and the guide key are connected with a base of the flue gas turbine and the exhaust volute correspondingly, the adjusting space is preset in the containing groove of the base, the guide key is driven by the positioning device to move in the containing groove, the position of the exhaust volute is adjusted, then the position of the exhaust volute is adjusted, and a casing and a rotor in the exhaust volute are concentric. Meanwhile, after the exhaust volute is positioned, a gap is formed between the guide key and the positioning device, so that the exhaust volute is allowed to deform slightly due to transverse thermal expansion at a high temperature, the gap between an internal rotor and an internal stator is prevented from being changed greatly, and the problem that assembly is difficult due to large deformation in a cold state is solved; and the working performance of the flue gas turbine is ensured, so that the flue gas turbine can stably and safely run under the conditions of high load and long period.

Description

technical field [0001] The invention relates to a flue gas turbine device of a catalytic cracking waste heat energy recovery unit in the petrochemical industry, in particular to an exhaust volute positioning adjustment device. Background technique [0002] The flue gas turbine is the core device of the catalytic cracking waste heat energy recovery unit in the petrochemical industry. The air inlet of the exhaust volute of the flue gas turbine is rigidly connected by a hollow cylinder, and the left and right ends are connected with the bracket support. [0003] The exhaust volute itself is a complex structure welded by thin-walled steel plates. In the cold state, the thin-walled plate deforms greatly, which brings great difficulties to the installation and adjustment. In the hot state during operation, the expansion of the high-temperature flue gas inside the flue gas turbine causes the exhaust volute itself to be greatly deformed. Large deformation occurs, resulting in the m...

AI Technical Summary

Problems solved by technology

[0003] The exhaust volute itself is a complex structure welded by thin-walled steel plates. When it is cold, the thin-walled plates deform greatly, which brings great difficulties to installation and adjustment.

When working in a hot state, the expansion of the high-temperature flue gas inside the flue gas turbine will cause a large deformation of the exhaust volute itself. If there is a large change in the middle circular part, the positioning is not accurate, and it will be inside the exhaust volute. A large deformation will result in the non-concentricity between the casing and the rotor in the exhaust volute, and changes in the gap between the rotor and the stator and the gap between the sealing parts. Safe, Reliable and Stable Operation of Gas Turbines

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