摘要:
A seal for a turbine casing is provided. The turbine casing includes a plurality of sections joined at flanges provided on each section. Each flange includes a bore and a counterbore. The seal comprises a compression sleeve seal having a length that is greater than a counterbore-to-counterbore length of two flanges; a fastener configured to extend through the compression sleeve seal; and a nut threadable on each end of the fastener. The compression sleeve seal is compressible between each flange and each nut to create a first seal and is radially extensible to create a second seal against each bore.
摘要:
A windage shield 2 for an array of fasteners 34, the shield 2 comprising a channel 4 for accommodating portions of the fasteners 34 extending into a fluid flow path. The windage shield 2 also comprises a closure flap 12 which extends between opposite side walls 8, 10 of the channel 4 to enclose the interior of the channel 4. The closure flap 12 is displaceable away from at least one of the side walls 8, 10 to provide access to at least one of the fastener portions 34.
摘要:
A radial annular flange including in inner or outer periphery alternating solid portions including orifices for passing fastener bolts, and hollow portions having bottoms that are substantially flat. The bottom of at least one keying hollow portion is situated radially inside, or outside, respectively, a circle centered on the axis of the flange and externally, or respectively internally, tangential to the orifices. Two hollow portions are situated on either side of the keying hollow portion having bottoms of concave curved shapes situated radially on the outside, or respectively on the inside, relative to the flat bottoms of the other hollow portions.
摘要:
A fixed vane section for a gas turbine engine includes an anti-rotation slot that receives a pin for maintaining a desired position while providing for movement encountered during operation. The example anti-rotation slot includes a compound radius on inner surfaces to reduce stresses encountered during operation.
摘要:
The present invention provides apparatus and methods for balancing stacked components of rotating machinery, such as in a gas turbine engine. Unlike conventional processes and devices for balancing stacked components, the present invention may use a single non-parallel spacer for obtaining an acceptable and repeatable component group balance. The non-parallel spacer may be used to compensate for rotor bow and the associated imbalance of the rotor group. By indexing a spacer with non-parallel faces, situated terminally at the end of the stack adjacent to the nut, rotor balance can be achieved without disassembly of the rotor group and clocking of its individual components. A spacer may also be disposed at any one or more of the interfaces between various components in the stack.
摘要:
A method for estimating a flange surface pressure distribution includes: a reference model receiving step of receiving a three-dimensional reference shape model of a rotary machine; a measured coordinate receiving step of receiving measured three-dimensional coordinate data at a plurality of positions on an upper flange surface and a lower flange surface when a casing is in an open state; a condition receiving step of receiving a tightening torque and an elastic coefficient of a plurality of bolts, elastic coefficients and weights of an upper-half casing and a lower-half casing, and the like; a modified model creating step of creating a three-dimensional modified shape model by modifying the three-dimensional reference shape model based on the measured three-dimensional coordinate data at the plurality of positions; and a pressure distribution estimating step of obtaining, by using the three-dimensional modified shape model and under the conditions received in the condition receiving step, a pressure distribution of a flange surface in a fastened state.
摘要:
Methods, apparatus, systems and articles of manufacture are disclosed. An inner shroud damper for a gas turbine engine includes: at least one carrier including a joint to couple to an inner shroud, the at least one carrier having a first side and a second side, and at least one mass damper coupled to the at least one carrier.
摘要:
A modular fan array includes a fan assembly having a fan wheel, a fan motor, and a mounting bracket. The fan wheel has a diameter. The assembly includes a frame having at least a pair of vertical members having a spacing therebetween. The spacing is greater than the fan wheel diameter. The mounting bracket includes a motor mount portion and a pair of rearwardly and outwardly extending legs. The motor mount portion includes an opening in which the motor is mounted. The rearwardly and outwardly extending legs each have a first angled section angled relative to the motor mount portion and second frame mount portion. The frame mount portions extend outwardly from the angled portions and parallel to the motor mount portion. The frame mount portions are removably secured to the frame.
摘要:
A casing that is for a rotating machine and that is configured such that a plurality of housings are linked together, the casing comprising: a first housing including a first connection part that protrudes outward in a radial direction of the rotating machine and that has a first surface extending along the radial direction; a second housing including a second connection part that protrude outward in the radial direction and that has a second surface extending along the radial direction and being in contact with the first surface; and at least one fastening device that fastens the first connection part and the second connection part in the axial direction of the rotating machine, wherein at least one of the first surface or the second surface includes, at least at a portion thereof, a rough surface region having formed therein a plurality of laser irradiation marks formed by irradiation with laser light.
摘要:
A thermal management system for a gas turbine engine includes a plurality of inlet and outlet vanes extending from a bypass inner wall towards an outer cowl, a plurality of first removable shims, a plurality of second removable shims, and a third removable shim. Each first removable shim extends between and engages the outer cowl and a corresponding inlet vane. Each second removable shim extends between and engages the outer cowl and a corresponding outlet vane. The third removable shim extends between and engages a heat exchanger and the outer cowl. Each of the plurality of first removable shims, each of the plurality of second removable shims, and the third removable shim is removable for positionally adjusting the outer cowl relative to the bypass inner wall.