Large bulb tubular turbine stay ring support structure

A bulb tubular flow turbine technology, applied in hydroelectric power generation, mechanical equipment, engine components, etc., can solve problems that cannot meet the needs of safe and stable operation of the unit

Active Publication Date: 2018-05-18
DONGFANG ELECTRIC MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the large-scale bulb tubular unit, with the increase of unit capacity and size, the shafting weight and axial water thrust of the unit increase geometrically. The need for safe and stable operation of the unit

Method used

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  • Large bulb tubular turbine stay ring support structure
  • Large bulb tubular turbine stay ring support structure
  • Large bulb tubular turbine stay ring support structure

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing, the present invention is described in detail.

[0018] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0019] Such as image 3 , 4 As shown in and 5, a support structure for a seat ring of a large-scale bulb tubular water turbine includes an upper pillar 3 of the seat ring and a lower pillar 4 of the seat ring arranged on the upper and lower sides of the inner ring 1 of the seat ring of the turbine, and the shaft of the large-scale bulb tubular turbine The forward / reverse water thrust can reach nearly 1000t, so the axial stiffness of the turbine seat ring is particularly important. Therefore, hor...

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Abstract

The invention discloses a large bulb tubular turbine stay ring support structure comprising a stay ring upper pillar and a stay ring lower pillar which are arranged on the upper and lower sides of aninner ring of a turbine stay ring. The right and left sides of the inner ring of the turbine stay ring are symmetrically provided with horizontal auxiliary support structures arranged in a flow channel of the bulb tubular turbine stay ring, and a certain angle is formed between the horizontal auxiliary support structures and the axis of a turbine unit. According to the support structure disclosedby the invention, the shortcomings and limitations of an existing support structure of an existing bulb tubular turbine stay ring are overcome; by additionally arranging the horizontal auxiliary support structures on the inner ring of the stay ring, the traditional two-point support structure with upper and lower pillars is optimized to be four-point support, and the overall rigidity of the stay ring is improved obviously; and meanwhile, a certain angle is formed between the horizontal auxiliary support structures and the axis of the turbine unit, so that the axial rigidity of the stay ring isimproved greatly, and it is ensured that the unit is not deformed seriously under the effect of large hydraulic thrust.

Description

technical field [0001] The invention belongs to the technical field of water turbine design, and in particular relates to a support structure for a seat ring of a large bulb tubular water turbine. Background technique [0002] The seat ring of the bulb tubular turbine is the basic stress-bearing part of the unit. The seat ring includes the seat ring inner ring 1 and the seat ring outer ring 2. The seat ring inner ring 1 bears the weight and weight of the generator stator and the entire unit shaft system. Therefore, the rigidity of the inner ring 1 of the seat ring is directly related to the safety and stability of the unit operation. [0003] Such as figure 1 As shown, the inner ring of the seat ring of the traditional tubular turbine is only supported by the upper and lower pillars. In the large-scale bulb tubular unit, with the increase of unit capacity and size, the shafting weight and axial water thrust of the unit increase geometrically. The need for safe and stable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03B11/00
CPCF03B11/00Y02E10/20
Inventor 曾明富罗远红孙媛媛石清华张小军宋敏李小兵张小刚王继娥
Owner DONGFANG ELECTRIC MACHINERY
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