Flow guide pipe of gas turbine stator blade in heat pump system and preparation method

Abstract

The invention discloses a preparation method of a flow guide pipe of a gas turbine stator blade in a heat pump system. The preparation method comprises the following steps of casting the flow guide pipe of the gas turbine stator blade; removing casting allowance, wherein a linear cutting process is adopted to remove the casting allowance of the flow guide pipe of the gas turbine stator blade; conducting finish-machining, wherein a grinding process is adopted to conduct finish-machining on the flow guide pipe of the gas turbine stator blade; and conducting heat treatment, wherein a solid solution treatment process and an aging treatment process are adopted to conduct heat treatment on the flow guide pipe of the gas turbine stator blade. By using the preparation method to prepare the flow guide pipe of the gas turbine stator blade, the problems that a traditional flow guide pipe forming method is high in preparation process difficulty and low in size precision, tailor-welded deformation is difficult to control, a supporting structure needs to be added due to insufficient strength, an independent heat treatment process and a welding process are needed due to inconsistency with a blade base material, the deformation after heating is inconsistent due to different thermal expansion coefficients, and local stress is large can be solved.

Description

technical field [0001] The invention relates to the technical field of gas heat pumps, in particular to a guide pipe for a gas turbine stator blade in a heat pump system and a preparation method thereof. Background technique [0002] The gas heat pump is an energy utilization system composed of a gas turbine and a flue gas heat pump. After the gas turbine and other equipment complete the energy utilization cycle, the system further recycles the waste heat of flue gas, steam, hot water and cooling water in depth, or directly drives the power to the heat pump. This process can be used for cogeneration of heat and power, cogeneration of heat, electricity and cooling, cogeneration of heat and cold, cogeneration of electricity and cooling, direct heating or direct cooling. The thermal efficiency of the system is extremely high. If it is used for direct heating, the thermal efficiency can reach 150 %, is one of the main trends of energy utilization in the future, and the gas turb...

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Problems solved by technology

[0016] The technical problems to be solved by the present invention are: to solve the traditional draft tube forming method with high difficulty in preparation process, low dimensional accuracy, difficult control of tailor welding deformation, insufficient strength, need to increase support structure, and separate heat treatment process required for inconsistency with the blade base material, Welding process, different thermal expansion coefficients, inconsistent deformation after heating, and large local stress

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