摘要:
A sealing member that seals a core printout hole in a turbine blade of a combustion gas turbine engine includes a plug member and first and second leg members. The plug member is formed generally in a top hat configuration and is disposed in a cavity formed in the blade, the plug member being retained in the desired sealing position by the leg members. The plug member broadly serves the purpose of sealing the hole that is in communication with the cavity. The plug member includes a substantially planar plate that is disposed adjacent the internal first surface of a wall of the turbine blade and a retention member that is received in the hole. The first and second leg members are fixedly mounted, such as by welding, on the plug member and are at least partially disposed adjacent and overlap a second opposite and external surface of the wall.
摘要:
A fastening device for a heat-protection shield of a gas turbine is provided with a center mounting element which has a defined installation clearance with a mounting slot in the radial direction. In the normal operating state, this mounting element has no function, such that thermal differential expansions in the radial direction between the heat-protection shield and its counterpart are possible without impairment within the limits of this defined clearance. The mounting element does not start to bear against the counterpart until the radial differential expansion exceeds the size s. The deformation of the heat-protection shield toward a component moving in a relative manner is thus limited and excessive grazing of the components against one another is avoided.
摘要:
A portable apparatus includes a housing having an inclined board for formed a cut-off opening and having one or more apertures formed in the inclined board and communicating with the cut-off opening of the housing for preventing the aperture of the inclined board from being blocked and for allowing the air to be drawn into the housing with a fan device which is secured to the inclined board. A stand is secured to the housing and is engaged with the flexible sheet members disposed below the housing for positioning and for preventing the flexible sheet members from blocking the apertures.
摘要:
A device for fastening and fixing components to a cylindrical wall. The cylindrical wall may be both the convex-cylindrical outer contour of a cylinder and the concave-cylindrical inner contour of a hollow cylinder, in which the component is fixed in the radial, axial and circumferential directions. The fastening and fixing is effected by shaped elements which are attached to the component and by a counterpart to each shaped element on the wall. In each case a shaped element and a counterpart interlock, such that the component has at least three shaped elements, of which at least one shaped element has a defined accuracy of fit with its associated counterpart in the radial direction and has clearance in the axial and circumferential directions. At least one shaped element has a defined accuracy of fit with its associated counterpart in the axial direction and has clearance in the radial and circumferential directions. Furthermore, at least one shaped element has a defined accuracy of fit with its associated counterpart in the circumferential direction and has clearance in the radial and axial directions.
摘要:
A turbine engine component includes a substrate and a wear coating on the substrate. The wear coating includes wear-resistant particles in a matrix phase, the wear-resistant particles being formed of chrome carbide or a cobalt alloy. Methods for forming a turbine engine component are also disclosed.
摘要:
Flexible vane pumps (also referred to as rubber impeller pumps) are commonly used in the marine engine coolant market. Replacement of the flexible (rubber) impeller has proven to be difficult, particularly for larger pumps located in the confines of an engine compartment of a boat and for impellers encrusted with salt, sand or otherwise stuck to the pump shaft. To aid in extracting impellers, an end piece on the impeller has been added such that a tool having flanges can be inserted into a space between the end piece and the impeller. The end piece on the impeller can also be used as an end plate to engage a threaded shaft for jacking the impeller onto a pump shaft. An alignment cone can be added to the pump housing for aligning the impeller with the pump shaft and pump housing bore.
摘要:
A casing structure of metal construction for the rotor blade area of axial flow compressor and turbine stages includes a closed, stable outside wall, a segmented inside wall that is interrupted by multiple expansion joints, and a load-transmitting connecting structure between inside and outside wall. A multiple sub-divided hollow chamber structure with a plurality of thin wall elements standing upright on the inside wall and outside wall, at least the majority of which are directly connected together, is arranged as connecting structure. The hollow chamber structure is connected to the inside wall and/or the outside wall by brazing.
摘要:
A centrifugal pump includes a C-shaped sealing assembly including an annular spring disposed between opposing legs of a base member. The spring biases the legs away from one another into sealing positions. In other embodiments, a vertical pump may be provided so as to include an oil recirculation system which enables an oil-based lubricant to be utilized instead of grease. In still other embodiments, the axial location of a pump shaft may be adjusted by rotating a bearing housing relative to the bearing frame where the two are threadedly connected to one another.
摘要:
A turbine nozzle includes a seal pad mounted to a seal support from an inner band thereof. The seal pad is provided for cooperating with seal teeth in an interstage seal. A bypass aperture extends through the seal support to bypass cooling air around the seal pad for providing relatively cool air aft of the seal teeth for improving cooling of the interstage seal in this region.