摘要:
Disclosed herein is a packing ring assembly including a packing ring segment, a bar, a cover plate, and a spring. The packing ring segment has an axial slot. The bar is disposed within the slot. The cover plate is disposed along an outer periphery of the packing ring segment. And, the spring is compressed between the bar and the cover plate.
摘要:
A method of manufacturing a brush seal includes wrapping wire about spaced frames to form a pair of wire runs of multiple wire thicknesses. Two pairs of interior plates are inserted between the wire runs at an angle and in spaced relation to one another. Two pairs of plates are applied along the outside of the wire runs parallel to the pairs of interior plates, respectively. By removing the wire run outside the plates and welding along each of the opposite edges of the wire run securing an interior plate, a cut end of a wire run and an exterior plate to one another, and by cutting each wire run preferably in half, four tee shaped bristle packs are formed with the bristles extending at the appropriate angle. By cutting the tee shaped packs to length and rolling the cut pack, a brush seal is formed to the appropriate diameter.
摘要:
The turbine includes a diaphragm having a seal carrier mounted in opposition to seal teeth carried by the rotary component. The seal carrier includes a seal face having a coating of abradable material enabling the rotary component to abrade the material from the seal face. The seal carrier is removable from the diaphragm and is carried by an axial extension integral with or removable from the outer diaphragm ring. A spring may be interposed between the seal carrier and the stationary component.
摘要:
A brush seal extends between static and rotary components. The brush seal includes a fence on the high pressure side, a bristle pack behind the fence, a bristle pack backing plate and a pressure plate. The backing plate includes a plurality of circumferentially and radially spaced arcuate slots arrayed in staggered relation about the brush seal segment. The pressure plate includes radially extending grooves opening toward the backing plate and intersecting each of the slots along that radius to afford a substantially uniform distribution of pressure on the downstream side of the bristle backing plate. In another embodiment, the grooves extend along the downstream faces of the bristle backing plate.
摘要:
A brush seal extends between static and rotary components. The brush seal includes a fence on the high pressure side, a bristle pack behind the fence, a bristle pack backing plate and a pressure plate. The backing plate includes a plurality of circumferentially and radially spaced arcuate slots arrayed in staggered relation about the brush seal segment. The pressure plate includes radially extending grooves opening toward the backing plate and intersecting each of the slots along that radius to afford a substantially uniform distribution of pressure on the downstream side of the bristle backing plate. In another embodiment, the grooves extend along the downstream faces of the bristle backing plate.
摘要:
A biasing system for a sealing ring and a packing casing. The biasing system may include a screw with a precision shoulder positioned within the packing casino and a spring attached at a first end to the precision shoulder and at a second end to the sealing ring.
摘要:
A method of manufacturing reaction nozzles for a turbine comprising (a) providing a piece of flat plate stock of predetermined size and thickness; and (b) machining the piece of flat plate stock to form a unitary, arcuate reaction nozzle segment including at least two adjacent nozzle airfoils.
摘要:
Jack screws are threaded into the lower carrier half adjacent opposite ends and sides of the lower carrier half for supporting it on temporary support plates on shoulders in the lower outer shell. Tapped openings are provided below the temporary support plates. Alignment of the steam faces is carried out by adjusting the end jack screws. The upper carrier half is lowered onto the lower carrier half with bores in the upper carrier half receiving upper end portions of the jack screws. Permanent keys are secured to flanges of the upper carrier half to support the carrier from the lower outer shell. The jack screws and temporary plates are removed and hold down bolts are inserted into the bores and thread into the tapped opening to hold the carrier down on the lower outer shell.
摘要:
A packing ring assembly is provided and includes an arcuate carrier ring segment having an aperture formed therethrough, an arcuate packing ring segment including an attachment component extending through the aperture of the carrier ring segment and movably associating with the carrier ring segment and the packing ring segment, and an actuator component disposed between the carrier ring segment and the packing ring segment and extending at least partially along the aperture. The actuator component is configured to maintain the packing ring segment in a first position relative to the carrier ring segment and to allow a movement of the packing ring segment to a second position relative to the carrier ring segment when the packing ring assembly is exposed to a pressure condition.
摘要:
A automated sealing assembly for rotary machines including: a seal guide assembly, the seal guide assembly aligns and holds a caulk wire and a sealing strip in a rotor groove for peening; a peening tool, the peening tool peens said caulk wire to deform the caulk wire and secure the caulk wire and the sealing strip in the rotor groove; an actuator, the actuator controls a movement and preload force of the peening tool producing a rotor groove seal having a predictable pull out strength; and a base for securing the seal guide assembly, the peening tool, and the actuator.