Turbine-unit disassembling method and turbine unit
AssigneesHitachi, Ltd., Hitachi Life Corporation, Hitachi Engineering Co., Ltd.
InventorsTatsuya Ootoshi, Takanori Aramaki, Sakae Ebata, Norihide Tooyama
Life of this patent
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Abstract
The object of the present invention is to increase the operating ratios of turbine units. To achieve the object, supports are provided on the upper outer casing of each turbine of a turbine unit, and the upper inner casing of said turbine is temporarily placed on the supports of the upper outer casing which is temporarily placed on the operating floor. By placing them temporarily in that way, a large space can be secured for the inspection of the turbine unit, and the inspection can be carried out quickly, which increases the operating ratio of the whole plant including the turbine unit. This invention is useful mainly for turbine units and their overhaul.
Claims14
A method of disassembling a turbine unit, comprising the steps of:
- removing upper outer casings from the turbine unit and placing them at places other than the place of the turbine unit;
- and
- removing upper inner casings from the turbine unit and placing them on the upper outer casings.
A method of disassembling a turbine unit, comprising the steps of:
- removing upper outer casings from the turbine unit and placing them at places other than the place of the turbine unit;
- setting a stand over each of the upper outer casings so that the stand straddles said casing;
- and
- removing upper inner casings from the turbine unit and placing them on the stands.
A method of disassembling a turbine unit, wherein the upper inner casing of one turbine being disassembled, among a plurality of turbines, is placed on the upper outer casing of another turbine not being disassembled.
A method of disassembling a turbine unit, comprising the steps of:
- setting a stand over the upper outer casing of one turbine not being disassembled, among a plurality of turbines, so as to have the stand straddle the casing;
- and
- placing the upper inner casing of another turbine being disassembled on the stand.
A method of disassembling a turbine unit, wherein upper inner casings of one turbine unit being disassembled, among a plurality of turbine units, are placed on upper outer casings of other turbine units not being disassembled.
A method of disassembling and inspecting a turbine unit, comprising the steps of:
- removing upper outer casings from the turbine unit and placing them at places other than the place of the turbine unit;
- removing upper inner casings from the turbine unit and placing them on the upper outer casings;
- inspecting the turbine unit;
- assembling the upper inner casings to the turbine unit;
- and
- assembling the upper outer casings to the turbine unit.
A method of disassembling and inspecting a turbine unit, comprising the steps of:
- removing upper outer casings from the turbine unit and placing them at places other than the place of the turbine unit;
- setting a stand over each of the upper outer casings so as to have the stand straddle said casing;
- removing upper inner casings from the turbine unit and placing them on the stands;
- inspecting the turbine unit;
- assembling the upper inner casings to the turbine unit;
- removing the stands from over the upper outer casings;
- and
- assembling the upper outer casings to the turbine unit.
A method of disassembling and inspecting a turbine unit, the method comprising the steps of:
- removing the upper outer casing from one turbine being disassembled, among a plurality of turbines, and placing it at a place other than the place of the turbine;
- removing the upper inner casing from the turbine and placing it on the upper outer casing of another turbine not being disassembled;
- inspecting the disassembled turbine;
- and assembling the removed upper inner casing to the disassembled turbine.
A method of disassembling and inspecting a turbine unit, comprising the steps of:
- removing the upper outer casing from one turbine being disassembled, among a plurality of turbines, and placing it at a place other than the place of the turbine;
- removing the upper inner casing from the turbine and placing it on a stand which is set in advance over the upper outer casing of another turbine not being disassembled so that the stand straddles the casing;
- inspecting the disassembled turbine;
- assembling the removed upper inner casing to the disassembled turbine;
- and
- assembling the removed upper outer casing to the disassembled turbine.
A turbine unit comprising:
- a rotor with blades;
- an upper inner casing and a lower casing for enclosing the rotor;
- and
- an upper outer casing for covering the upper inner casing,
- the upper outer casing having supports which are so positioned as to receive and support the bottom surface of the upper inner casing outside the upper outer casing.
A turbine unit comprising:
- a rotor with blades;
- an upper inner casing and a lower casing for enclosing the rotor;
- and
- an upper outer casing for covering the upper inner casing,
- the upper outer casing having reinforcing ribs on its outer surface and supports which are provided on the ribs in such positions as to receive and support the bottom surface of the upper inner casing.
Dependencies are inferred from the claim text.