Bellows

About: Bellows is a research topic. Over the lifetime, 15312 publications have been published within this topic receiving 73914 citations.

Gas turbine with flexible combustion sensor connection

Abstract: A gas turbine engine ( 40 ) having an active combustion control system ( 54 ) including a sensor element ( 44 ) positioned proximate the combustion chamber ( 46 ) as part of a sensor assembly ( 84 ) including a spring-action bellows ( 74 ). The sensor assembly is installed through an opening ( 69 ) in the casing ( 48 ) of the engine to make contact with the combustor wall ( 62 ). The bellows is compressed from its resting position by tightening mounting bolts ( 70 ) against a mounting flange ( 66 ) of the sensor assembly. The spring action of the bellows ensures contact between the sensing assembly and the combustor wall in spite of differential thermal growth between the casing and the combustor. The sensor element may be replaced by simply removing the mounting bolts without further disassembly of the engine.

Pneumatic equalization spring system for vehicles

Abstract: 807,138. Road-vehicle pneumatic-spring suspensions. DAIMLER-BENZ A. G. Sept. 12, 1956 [Sept. 12, 1955], No. 27909/56. Classes 108(2) and 108(3) The invention relates to vehicle suspension systems in which a pressure-compensating pipeline interconnects respective road-wheel pneumatic springs 2, 4. According to the invention at least one of the springs are of the kind in which the effective cross-section of the movable part of the spring, on which the pneumatic pressure acts, varies with deflection of the spring. As shown, the cross-section of the front wheel spring remains constant with deflection, while the rear wheel spring (shown diagrammatically). cross section increases with increased compression movement of the spring. On a pre-determined degree of deflection of the front wheel 1, a valve 14 (connected at 13 to the wheel suspension arm 12) is operated to admit air to the pipe 10 from a reservoir 15. The latter may be charged from a compressor, or may be replaced by another charged container when necessary. The springs 2 or 4 may be replaced by the spring shown in Fig. 6, in which the cross section decreases with increased compression movement. In another construction (Fig 7, not shown) the bellows 616 is in the form of a tubular sleeve extending between the relatively movable members 602, 607 which are spaced apart and have annular flared abutment faces which afford progressive supporting area as compression increases. In the latter construction, the bellows sleeve is constricted by a rigid ring.

Brick press with means for withdrawing air from brick raw material

Abstract: A lower fixed frame has a lower fixed piston thereon. An upper movable frame has thereon an upper movable piston adapted to be moved toward and away from the lower frame such that the upper and lower pistons oppose each other. A mold having a crosssection corresponding to that of the pistons is positioned to support brick raw material between the upper and lower pistons. A pair of bellows surround the upper and lower pistons in an air tight manner. The upper bellows has its lower end connected to a plate which is supported by servo-cylinders. An air tight ring is fixed to the bottom of the plate and is adapted to create an air tight seal with the top of the mold when the servo-cylinders are actuated to move the upper bellows downwardly. A suitable vacuum pump is connected by vacuum lines to the areas within each of the bellows.

Vehicle air suspension system rolling bellows - has reinforcing fibrous members inclined to transverse plane

Abstract: The rolling bellows assembly of rubber or similar material is used for a vehicle air-suspension system, it has continuous embedded reinforcing fibrous members inclined to the bellows axis, between its mounting beads while a cylindrical tension-resistant belt encloses its central portion. Where the dia. is greatest, the members are at an angle of between 25 deg. and 90 deg. to the cross-sectional plane of the bellows (3). The belt (16) is built up of two or more layers of parallel fibrous reinforcing members at between 0 deg. and 25 deg. to this plane, those members in successive layers crossing each other.

Flexible pipe connector for machinery protection

Abstract: The illustrated connecting device is adapted to provide a flexible connection between a pipeline and a pump, compressor, engine, vessel, reactor, or another pipeline, or any other machine, device or equipment to protect the equipment against stresses and strains due to the fluid pressure in the pipeline, and also due to thermal expansion and contraction in the pipeline. The connecting device also protects the equipment against other forces and vibrations which might otherwise be transmitted to the equipment by the pipeline. The transmission of vibrations from the equipment to the pipeline is also minimized. In addition, the connecting device reduces the transmission of noise in both directions between the equipment and the pipeline. The connecting device may comprise a casing having first and second diametrically opposite portions and a third portion extending generally perpendicular to the first and second portions. A pipeline coupling section extends into the first portion of the casing and is rigidly connected thereto. A conduit is disposed within the casing and is provided with first and second diametrically opposite conduit sections and a third conduit section extending generally perpendicular to the first and second sections. A first flexible bellows is connected between the first section of the conduit and the pipeline coupling section. A second flexible bellows is connected between the second conduit section and a blind pipe section connected to the second portion of the casing. The equipment is adapted to be connected to an equipment-connecting section which is rigidly connected to the third section of the conduit. A third flexible bellows is connected between the equipment-connecting section and the third portion of the casing. The third bellows provide flexibility between the equipment-connecting section and the casing, while preventing the transmission of forces to the equipment due to the fluid pressure in the pipeline.