Sealing flange of gas turbine cylinder and design method thereof

A technology for sealing flanges and gas turbines, used in mechanical equipment, computing, engine components, etc., can solve problems such as complex sealing structures, and achieve the effects of simplifying component structures, strengthening flange sealing effects, and improving sealing performance

Pending Publication Date: 2019-12-20
SHANGHAI ELECTRICGROUP CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In view of the shortcomings of the prior art described above, the object of the present invention is to provide a sealing flange of a gas turbine

Method used

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  • Sealing flange of gas turbine cylinder and design method thereof
  • Sealing flange of gas turbine cylinder and design method thereof

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Example Embodiment

[0035] The embodiments of the present invention are described below by specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0036] see Figure 1 to Figure 2 . It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings in this specification are only used to cooperate with the contents disclosed in the specification for the understanding and reading of those who are familiar with the technology, and are not intended to limit the implementation of the present invention. Restricted conditions, it does not have technical substantive significance, any structural modification, proportional relationship change or size adjustment, without affecting the effect that the present invention can produce and the purpose that can be achieved, should still fall within the present invention. The scope of the disclosed technical c...

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Abstract

The invention provides a sealing flange of a gas turbine cylinder and a design method thereof. The sealing flange comprises an upper flange connected with an upper half cylinder of a cylinder and a lower flange connected with a lower half cylinder of the cylinder, the upper flange and the lower flange are divided into an inner part and an outer part in the radial direction of the cylinder, an inner flange positioned in the inner part and an outer flange positioned in the outer part are made of different materials, and the thermal expansion coefficient of the material used for the inner flangeis greater than that of the material used for the outer flange; and the outer flange is provided with bolt holes for assembling bolts. The inner flange and the outer flange are made of different materials, and the expansion amount of the inner flange is larger than that of the outer flange, so that the opening gap at the inner side of a split flange in a gas turbine is reduced, and the sealing performance of the split flange in the gas turbine is improved.

Description

technical field [0001] The invention relates to a gas turbine, in particular to a sealing flange of a gas turbine cylinder and a design method thereof. Background technique [0002] As a gas pressure maintaining part of gas turbine, gas turbine cylinder bears temperature load and gas pressure load under working condition. At present, gas turbine cylinders are generally divided into upper and lower half cylinders, which are connected by mid-section flanges and bolts. The flange contact pressure generated by the bolt pre-tightening force is used to seal the flanges to prevent gas leakage from reducing the operating efficiency of the gas turbine and increasing operating costs. Possible power plant accident. [0003] With the improvement of cooling technology, material performance and manufacturing process, gas turbines are designed towards high pressure ratio and high operating temperature, which makes the facet flange in the cylinder more prone to leakage, so the sealing perf...

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Application Information

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IPC IPC(8): F01D25/24F01D11/00G06F17/50
CPCF01D11/00F01D25/243
Inventor 王杰谈芦益普艳祥
Owner SHANGHAI ELECTRICGROUP CORP
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