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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 cylinder and a design method thereof, which is used to solve the problem of complicated sealing structures added by the sealing flange in the prior art

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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Embodiment Construction

[0035] The implementation of the present invention will be illustrated by specific specific examples below, 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 drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. within the scope covered by the disclosed technical content. At the same ti...

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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...

Claims

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Application Information

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IPC IPC(8): F01D25/24F01D11/00G06F17/50
CPCF01D25/243F01D11/00
Inventor 王杰谈芦益普艳祥
Owner SHANGHAI ELECTRICGROUP CORP
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