Screw pile connection structure for gas turbine case connection and gas turbine
A gas turbine and connection structure technology, applied in the direction of connection components, screws, nuts, etc., can solve problems such as easy loosening, achieve the effect of easy processing and increased safety margin
Active Publication Date: 2018-05-29
CHINA HANGFA SOUTH IND CO LTD
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Problems solved by technology
[0004] The present invention provides a screw pile connection structure for gas turbine casing connection and a gas turbine to solve the problem that the screw piles installed on the narrow installation side of the magnesium-aluminum alloy casing of the existing gas turbine are easy to loosen under the action of complex load and large stress technical problem
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Embodiment Construction
[0025] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in various ways defined and covered below.
[0026] figure 1 It is a structural schematic diagram of the screw pile connection structure used for gas turbine case connection according to the preferred embodiment of the present invention; figure 2 is a structural schematic diagram of a screw pile connector in a preferred embodiment of the present invention; image 3 yes figure 2 The A-A profile; Figure 4 It is a structural schematic diagram of a sawtooth bush in a preferred embodiment of the present invention; Figure 5 It is a schematic top view structure diagram of the serrated bushing in the preferred embodiment of the present invention.
[0027] Such as figure 1 As shown, the screw pile connection structure used for gas turbine casing connection in this embodiment includes casing threaded holes 2 ...
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The invention discloses a stud connecting structure for connecting a gas turbine case and a gas turbine. The stud connecting structure for connecting the gas turbine case comprises a case threaded hole for assembling and a stud connecting piece; the case threaded hole is formed in the gas turbine case; the stud connecting piece is assembled in the case threaded hole to connect the gas turbine case; an anti-rotation sawtooth structure used for preventing the stud connecting piece from rotating in the circumference direction is arranged in the middle portion of the stud connecting piece; and a sawtooth-shaped lining which is matched with anti-rotation sawteeth of the anti-rotation sawtooth structure and the wall of a counterbore in the case threaded hole and is used for preventing relative rotation between the stud connecting piece and the gas turbine case is arranged between the anti-rotation sawtooth structure and the case threaded hole. The anti-rotation sawtooth structure is additionally arranged on the stud connecting piece to prevent looseness of the stud connecting structure, so that the degree of freedom of the interference end of a screwed pile of the stud connecting piece is completely limited; and the stud connecting structure is suitable for structural connection between the power turbine case of the gas turbine and a speed reducer case, and is also suitable for structural connection of similar structures.
Description
technical field [0001] The invention relates to the technical field of connection structures of ground gas turbines, in particular to a screw pile connection structure used for connection of casings of gas turbines. In addition, the present invention also relates to a gas turbine comprising the above-mentioned screw pile connection structure for gas turbine case connection. Background technique [0002] The power turbine casing of the gas turbine and the reducer casing are often connected by screw piles, and the screw piles are screwed into the reducer casing made of cast aluminum by using interference threads. When the gas turbine is used in a mobile vehicle, the interaction force between the casings of the gas turbine becomes complicated, so that the interference end of the screw pile screwed into the casing body bears a large axial impact load and radial alternating load And other complex loads, after a period of use of ordinary installed screw piles, the screw piles wil...
Claims
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IPC IPC(8): F16B39/02F16B35/00
CPCF16B35/00F16B39/02
Inventor 曾维赵晓磊田鹏
Owner CHINA HANGFA SOUTH IND CO LTD