Continuous flow machine having multiple guide vane stages and method for partially disassembling a continuous flow machine of this type

A turbomachine comprising:

• at least one guide vane carrier of ring-shaped form, which is composed at least of a lower part and an upper part which is connected releasably to the latter, and
• at least three guide vane stages, which are retained on the inner circumference of the at least one guide vane carrier and are arranged axially one behind the other in the flow direction and each have a multiplicity of substantially radially extending guide vanes,
• wherein each guide vane comprises a guide vane airfoil which extends between a root plate and a head plate,
• wherein each root plate is retained directly on the guide vane carrier in a form-fitting manner and, in this way, secured against displacement in the radial and axial directions,
• wherein at least some root plates of guide vanes of each guide vane stage are secured against displacement in the circumferential direction by at least one additional securing element,
• wherein the root plates of adjacently arranged guide vanes of axially adjacent guide vane stages in each case engage directly into one another in a form-fitting manner and partially overlap one another,
• wherein remaining between the root plates of each guide vane stage and the inner side of the guide vane carrier is in each case a substantially ring-shaped intermediate space which is accessible for the maintenance personnel in a maintenance state in which the lower part and the upper part of the guide vane carrier are separate from one another, and
• wherein at least some of the securing elements are inaccessible from an outer side of the guide vane carrier and are positioned such that, in the maintenance state, they are able to be reached, and mounted and dismounted, by the maintenance personnel via the intermediate space.