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Connection components

A technology for connecting components and components, applied in the direction of connecting components, thin plate connections, threaded fasteners, etc., can solve problems such as unsatisfactory

Inactive Publication Date: 2016-03-16
ROLLS ROYCE PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional connection assemblies using collars are not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] like figure 1 As shown, turbofan gas turbine engine 10 includes, in flow order, an inlet 12 , a fan section 14 , a compressor section 16 , a combustion section 18 , a turbine section 20 , and an exhaust section 22 . Turbine section 20 includes one or more turbines arranged to drive one or more compressors in compressor section 16 via a shaft (not shown). Turbine section 20 also includes a turbine arranged to drive a fan in fan section 14 via a shaft (not shown). Fan section 14 includes a fan duct 24 partially defined by a fan housing 26 . Fan duct 24 has inlet 12 at its axially upstream end and outlet 28 at its axially downstream end. The fan housing 26 is secured to a central motor housing 36 by a plurality of radially extending fan outlet guide vanes 30 . The fan housing 26 surrounds a fan rotor 32 that carries a plurality of circumferentially spaced radially extending fan blades 34 . Fan rotor 32 and fan blades 34 rotate about axis X of gas turbine engine 10 .

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PUM

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Abstract

A connecting assembly for securing flanges of two housings, the connecting assembly includes a plurality of bolts, a plurality of collars and a plurality of nuts. Each bolt extends through an aperture in the first flange and an aperture in the second flange, each collar is arranged around the stem of the corresponding bolt, and each nut is secured to a corresponding one of the bolts . Each collar is arranged between one of the flanges and the head of the nut or bolt. Each collar includes a first member and a second member, the second member being disposed at the first end of the first member. The second member is generally U-shaped or V-shaped in cross-section, has first and second radially inner ends and a radially outer intermediate portion, and is at the first radially inner end of the second member with the An axial spacing is defined between the second radially inner ends.

Description

technical field [0001] The present invention relates to a connection assembly, in particular to a connection assembly for a gas turbine engine, and more particularly to a connection assembly for connecting a blade containing casing of a gas turbine engine to another adjacent casing . Background technique [0002] The fan casing and fan inlet duct of a turbofan gas turbine engine are often joined together using nuts and bolts, wherein the bolts are positioned axially through holes in annular radially extending flanges in the fan casing body and fan inlet duct abutting end. [0003] If the flanges are designed to withstand heavy dynamic loads, it is customary to have each bolt extend and encircle the shank of each bolt and between the head of the corresponding bolt and one of the flanges or between the corresponding nut and one of the flanges A cylindrical collar is provided between them. This increases the effective length of the bolt before failure and thus increases the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02C7/32
CPCF05D2260/38F01D21/04F01D21/045F01D25/24F01D25/246F16B5/0241F02C7/05F16B39/24F01D25/243F16B2200/506
Inventor J.M.里德
Owner ROLLS ROYCE PLC