Fully flexible support for steam turbine

A technology of steam turbines and flexible plates, applied in mechanical equipment, engine components, machines/engines, etc., can solve problems such as poor thermal expansion of steam turbines, jamming or jamming of sliding pin mechanisms and cat claw structures, abnormal vibration of steam turbines, etc. Achieve the effects of eliminating the hidden danger of thermal expansion and jamming, reducing manufacturing costs and reducing weight

CN114017142APending Publication Date: 2022-02-08中国船舶重工集团公司第七0三研究所
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2022-02-08

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Abstract

The invention provides a fully flexible support for a steam turbine. According to the fully-flexible support for the steam turbine, flexible plates are arranged at the front end and the rear end of a cylinder of the steam turbine; double-layer front flexible plates are arranged on the two sides of the front portion of the cylinder of the steam turbine respectively, an included angle between each double-layer front flexible plate and the axial direction of the steam turbine is kept at 45 degrees, single-direction lateral thrust smaller than 400 kg of a steam inlet pipeline of the steam turbine is borne, and the steam turbine is allowed to expand towards the front portion and the two sides at the same time; and a single-layer rear flexible plate is arranged on each of the two sides of the rear portion of the cylinder of the steam turbine, the cylinder of the steam turbine is allowed to expand towards the two sides, and single-layer rear flexible plates serve as dead points of overall axial expansion of the steam turbine. According to the invention, a conventional heavy bearing box supporting form is replaced, the functions of meeting the impact resistance requirement of ship steam turbine equipment, permitting three-way thermal expansion of a steam turbine, bearing certain lateral thrust of the steam inlet pipeline and the like are achieved, the hidden danger that the steam turbine is stuck due to thermal expansion is eliminated, the manufacturing cost of the steam turbine can be reduced, the weight of ship equipment is reduced in a breakthrough mode, and important support is provided for improving economic benefits or combat performance of ship transportation.
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Description

technical field

[0001] The invention belongs to the field of energy and power, in particular to a fully flexible support for a marine steam turbine. Background technique

[0002] When designing the cylinder support of the steam turbine, it is necessary to consider factors such as the overall thermal expansion and local thermal expansion of the steam turbine, the force of the pipeline, and impact resistance. If the thermal expansion of the steam turbine is not smooth or sufficient, it will be difficult to start or the vibration will be abnormal.

[0003] There are generally three types of support structures for steam turbine cylinders: one is that the rear end of the steam turbine cylinder is provided with a flexible plate, and the front end is supported by a bearing box and a combination of cat claw structures; A sliding pin mechanism is provided at the front end of the cylinder of the steam turbine, and a bearing box support is provided at the rear end. These three common ...

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Embodiment Construction

[0018] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] Referring to the schematic diagram of the fully flexible support of the steam turbine, the embodiment of the present invention provides a fully flexible support structure for the cylinder of the steam turbine, including the main components such as the front flexible plate 2 and the rear flexible plate 4 .

[0020] The front flexible plate 2 is a double-layer flexible plate, one on the left and one on the left. When installed, the included angle w...