Abstract: Embodiments of an environmental barrier and seal include physical shields to protect against mechanical damage, labyrinth features to inhibit fluid/particle intrusion, impeller features, and a brush seal. Combinations of these features are presented in various embodiments, specific to particular operating conditions, to create an environmental barrier that protects primary carbon face seals and other shaft seals.

Abstract: To provide a pump device configured such that the impeller can be prevented from being moved toward a case body by which a pump chamber is defined. An impeller is arranged in a pump chamber defined by a case body and an end wall portion of a motor. The impeller includes back blades protruding from a shroud toward the end wall portion of the motor. When the impeller is driven to circulate fluid through the pump chamber, a fluid is drawn out by the back blades from a clearance between the impeller and the end wall portion of the motor. Therefore, the impeller is moved by the negative pressure toward the end wall portion of the motor. The back blades function as a suction power generation mechanism configured to generate suction power sucking the impeller toward the end wall portion.

Abstract: A balance piston seal assembly for a balance piston of a compressor is provided. The balance piston seal assembly may include a balance piston seal configured to be disposed about the balance piston such that an inner radial surface of the balance piston seal and an outer radial surface of the balance piston define a radial clearance therebetween. The balance piston seal assembly may also include a plurality of heaters in thermal communication with the balance piston seal and configured to heat and thermally expand the balance piston seal and thereby increase a radial length of the radial clearance.

Abstract: The present invention relates to a compressor assembly for a turbocharger. The compressor assembly may comprise a spiral housing with a flow channel which is designed to convey a fluid which can be sucked up from outside the compressor assembly, a compressor outlet flange which is fluidically connected to the spiral housing via the flow channel, and an injection device designed to introduce a fluid from outside the compressor assembly into the flow channel, wherein the injection device is arranged outside the flow channel of the spiral housing.

Abstract: A compressor may include a casing defining a discharge cavity and a seal cavity. A rotary shaft may be disposed in the casing, and a shaft seal assembly may be disposed in the seal cavity and about the rotary shaft. An impeller may be coupled with and configured to be driven by the rotary shaft. A balance piston may be integral with the impeller and may define the discharge cavity and the seal cavity. A balance piston seal may be disposed about the balance piston such that the balance piston seal and the balance piston define a radial clearance therebetween. The radial clearance may be configured to provide fluid communication from the impeller to the discharge cavity. A heat shield may be disposed in the discharge cavity, and may be configured to prevent the conduction of heat from the discharge cavity to the seal cavity via the casing.

Abstract: Reciprocating fluid pumps include a reinforced shaft including an inner shaft and a protective cover. The protective cover at least substantially encapsulates the inner shaft. The inner shaft exhibits a greater resistance to mechanical deformation than the protective cover, and the protective cover exhibits a greater resistance to chemical corrosion by the subject fluid than the inner shaft. Methods of forming a reciprocating fluid pump include forming a reinforced shaft and positioning the reinforced shaft within a subject fluid chamber and between two plungers.

Abstract: A structural assembly for a fluid-flow machine includes a main flow path boundary a row of relatively rotating blades with a gap existing between the blade ends and the main flow path boundary. A secondary flow duct is connected to the main flow path via two openings. A structural assembly has at least one support component and at least one insertion component. A structure extending in the circumferential direction and receiving or holding at least one insertion component along the circumference is provided in the support component. Each insertion component forms with at least some of its faces at least part of the main flow path boundary. Each secondary flow duct is jointly limited along at least part of its course by faces of at least two components of the structural assembly.

Abstract: A propeller shaft of a marine vessel is supported by bearing means within a stern tube or frame. The stern tube or frame has an aft end provided with a sealing assembly for sealing the propeller shaft. The sealing assembly and the stern tube or frame have at least one leakage monitor line for monitoring the condition of the sealing assembly. The at least one leakage monitor line is provided with a circumferentially extending channel section.

Abstract: A submersible pump includes an impeller (8) arranged in a pump housing (2). A seal (22) seals the impeller (8) with respect to a stationary part of the pump housing (2). The seal (22) includes a sealing ring (24) arranged on the impeller side. The sealing ring engages in a second sealing ring (26) arranged on the pump housing side. The sealing ring (26) on the pump housing side has at least one hole (28) for discharging solid particles from the impeller (8).

Abstract: A turbine engine compressor, including a first housing for supporting injectors, a second housing arranged around the first housing while forming with the first housing an annular space therewith, and a plurality of air injectors each mounted in recesses. Each air injector includes at least one inner air injection channel which leads, on one side, into an outflow jet of the gas stream and, on the other side, into the space formed between the recesses, and, at an upstream end, an upstream rim having an inner surface radially bearing against an upstream rim of the corresponding recess of the first housing and an outer surface radially bearing against an inner surface of the second housing. A mechanism clamping the upstream rim of the air injectors between the housings enables the air injectors to be held in position in the recesses of the first housing.

Abstract: One embodiment of the present invention is a damping system for rotating machinery such as gas turbine engines. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for damping systems. Further embodiments, forms, features, aspects, benefits, and advantages of the present application shall become apparent from the description and figures provided herewith.

Abstract: An air cycle machine includes a shaft formed from end sections attached to a center section. The center section includes a first diameter that is supported on bearings within the air cycle machine and a second diameter that forms a part of an interface with a corresponding end section. The second diameter is less than the first diameter and extends an axial distance from an end of the center section and provides for the weld beam to be directed normal to the interface location such that weld quality and manufacturing efficiencies are improved.

Abstract: A standard for supporting a bearing for a rotating shaft of a machine including a plurality of casings having different gas pressures greater than atmospheric pressure includes a sealed chamber for fluidly coupling to an end packing of a first casing and a second casing of the machine, the sealed chamber having a pressure greater than atmospheric pressure. The pressure in the sealed chamber reduces the leakage from the casing making more pressurized gas available for producing work in the machine.

Abstract: A mounting apparatus is provided for securing a fan. The fan has four corner portions projecting from two opposite sides thereof, the corner portions each define a mounting hole therethrough. The mounting apparatus includes a bracket for securing the fan therein, and two locking members. The two locking members each comprise a pivoting portion and a positioning portion spaced from the pivoting portion. The pivoting portion and the positioning portion respectively form a pivoting post and a positioning stub to respectively engage two of the mounting holes of one side of the fan, the fan and the two locking members are secured within the bracket.

Abstract: A portable self-priming transfer pump comprising a one piece unitary housing, comprised of a first portion that houses a motor, a second casing portion within which is formed a pump cavity, and a handle; and a one piece cover fitted to the outboard end of the second portion of the housing.

Abstract: A centrifugal water pump for use in a diesel engine cooling system provides an improved water pump construction including multiple features which combine to provide increased operating life for the supporting and wearing components of the pump. The improvements include one or more of: a water seal system is provided having a stationary seal and a rotating seal made of silicon carbide with at least one of the seals having embedded lubricant; an o-ring added to the stationary seal ensures that pressurized water does not get past the stationary seal; metallic bearing seals and covers to prevent leeching of the lubricant from the bearing; optimized spring force on the rotating seal; tapered shaft impeller interface to minimize torsional stresses on these components from the keyway design of the prior art; and the housing engine oil inlet is removed to prevent the direct flow of hot, dirty, and contaminated oil from damaging the water pump bearings.

Abstract: A water pump includes an impeller provided at a first end of a rotational shaft supported by a body via a bearing, a mechanical seal provided between the impeller and the bearing, a draining hole introducing a water drop leaked from an impeller side via the mechanical seal to a reservoir provided at a bottom of the body and having a side opening, a plugging member provided at the side opening of the reservoir for liquid-tightly sealing the reservoir, and an opening portion provided at the plugging member for communicating the reservoir and an atmosphere side.

Abstract: The process of attaching turbines to water mains, water towers, sewage lines, aqueducts, and various pipelines so as to capture the kinetic energy of pressurized fluid traveling through these mediums and changing the kinetic energy to electric energy by means of a generator and conducting this new electricity to the nearest power substation by means of a conduction pipe. By consumer demand for utilities such as water and sewage to be taken to and away from homes and businesses, these consumers will be making their own electricity that they will then buy back from the utility companies. With more and more people buying homes and starting businesses, there will be many new utility consumers on top of the already existing consumers, which means that the potential and scope of using the process for making cleanly generated electricity is limitless and universal.

Abstract: An improved diesel engine water pump includes three main features that aid in extending the maintenance-free life of the pump. The impeller shaft is carried by tapered roller shaft support bearings of which the impeller bearing has a floating outer race that is urged axially by a preload spring to provide a prescribed axial preload that maintains concentricity of the shaft with the axis and prolongs bearing life. An improved oil seal combines an oil slinger, a stationary deflector and a lip oil seal with a return passage to the engine to more effectively limit oil leakage from the pump. An improved water seal includes pressurized water jets fed from the pump volute that flush wear particles from the water seal surface and increase water seal life. Further details of these features are also disclosed.

Abstract: A double-seal/oil-reservoir system for motor/pump assembly includes first seal (S1) and a second seal (S2) of a carbon/ceramic ring type that are axially spaced from one another along a drive shaft (24). A containment volume “V” is defined between the first and second seals (S1 and S2) in which an oil or oil-like fluid is contained to prevent seepage or weepage of the fluid circulated by the pump.

Abstract: A reactor pressure vessel (RPV) for a nuclear reactor that permits measurement of the flow through each reactor internal pump (RIP) is described. The reactor pressure vessel also includes at least one reactor internal pump that includes an impeller and a pump diffuser. At least two seal rings extend circumferentially around an outer surface of the diffuser housing outer wall and are located in circumferential grooves in the housing outer wall. At least one lateral bore extends through the housing outer wall into a diffuser housing longitudinal flow passage. Each lateral bore is located in an area between two adjacent seal rings, with each inter-seal ring area containing one lateral bore. At least one pressure tap bore extends from the outer surface of the RPV bottom head petal, through the pump deck to an inner surface of a pump deck opening. Each pressure tap bore is aligned with an area in the RIP containing a corresponding lateral bore.

Abstract: A submersible electric motor driven pump includes a motor chamber and a pump chamber separated by a seal chamber. Inboard and outboard shaft seals immersed in an oil buffer fluid within the seal chamber restrict the flow of liquid from the seal chamber into the pump and motor chambers. An integral or externally mounted pre-pressurized buffer fluid reservoir maintains a positive fluid pressure in the seal chamber relative to the external pressure at working depth, and suitable buffer fluid level within the chamber, preventing the ingress of the pumped media through the outboard seal. A unique impeller design circulates fluid within the seal chamber in the region of the outboard shaft seal, allowing continuous run dry operation when used in conjunction with an integrally cooled motor design. A cartridge shaft sleeve subassembly permits with a bearing configured between the inboard and outboard seals, facilitates maintenance.

Abstract: A structure for preventing deformation of a gland portion of a low pressure steam turbine by preventing wet steam from entering the gland portion. The gland portion includes a gland casing (3) that surrounds a gland portion periphery (2) of a rotor (1). A portion of steam (20), in the form of wet steam (21a), flows into a cavity (10) through a gap (11). Accordingly, a ridge (15) is provided on and around the entire periphery of the rotor (1), and thereby the wet steam (21a) is caused to flow in a swirling manner, and is prevented from flowing toward the gland portion periphery (2). Also, water in the wet steam (21a) scatters therearound so that the gland casing (3) and the seal portion (4, 5) are prevented from being partially cooled. Thus, contact with the rotor (1) is avoided and vibration caused thereby is prevented.

Abstract: The pump is formed by pump housing defining a pump housing cavity and a column housing defining an elongated cavity. The front of the column housing is coupled to the rear of the pump housing cavity. A shaft axially from the rear of the column housing cavity into the pump housing cavity. An impeller is connected to the front of the shaft for rotation in the pump housing cavity for moving liquid from the front inlet through an outlet transverse to the axis. The impeller has vanes on its front and rear sides. A baffle is fixedly secured to the front of the column housing around the shaft and has vanes on its rear side for preventing liquid rearward of the baffle in the column housing cavity from rotating.

Abstract: A centrifugal pump of the pitot tube type is structured with axially stabilizing elements which assist in stabilizing the pitot tube assembly of the pump during high pressure operating conditions. The axially stabilizing elements include at least one seat member positionable to register against the discharge tube of the pitot tube assembly to keep the discharge tube in axial alignment and in a selected tension. The pitot pump may also include a pressure relief channel positioned to accommodate increased pressures which may arise from an o-ring failure in the sealing mechanism of the discharge assembly. The axially stabilizing elements reduce the occurrence of fretting and galling resulting from axial forces exerted on the pitot tube assembly and facilitate simplified construction and assembly of the inlet manifold to a discharge assembly or manifold. The cost of constructing and maintaining the centrifugal pump is thereby reduced.

Abstract: A pump incorporates a housing with a pump chamber and an internal bore communicating with the pump chamber, and a power driven impeller shaft supported in the housing by at least one bearing in the internal bore. The impeller shaft has an impeller in the pump chamber. A seal mechanism is in the internal bore between the bearing and the pump chamber providing a seal between the impeller shaft and the wall surface of the internal bore. The internal bore has a stepped configuration with small and large diameter portions and a vertical wall defined therebetween. The large diameter portion defines an intermediate chamber between the bearing and the pump chamber and that chamber connects with the pump chamber. The intermediate chamber contains liquid with air being trapped in the remaining portion of the intermediate chamber. The bearing and the seal mechanism are located in the small diameter portion.

Abstract: A lubrication system for equipment (e.g. centrifugal pump) employing a rotating shaft and corresponding support bearings is disclosed. The lubrication system includes a lubricant dispenser having a plurality of blades or dispensing members pivotally attached thereto, the dispenser affixed to the shaft for rotation therewith. Centrifugal force created by rotation of the shaft to which the dispensing blades are attached causes the blades to extend radially outward from the shaft center during operation so as to dispense the lubricant throughout a lubricating or misting chamber in order to lubricate the adjacent bearings. The system is also advantageous in that the blades are permitted to pivot or flap downward toward the shaft in either direction so that the dispenser may be more easily inserted into the misting chamber during manufacturing of the device or replacement of the lubricating system.

Abstract: A pump shaft clearance seal construction disposed adjacent a bearing frame (49, 51) for preventing lubricating fluid from migrating away from the bearing frame. The clearance seal construction includes a plurality of grooves (labyrinth or single spiral groove) defined in the exterior periphery of a rotating member disposed immediately adjacent the bearing frame, the rotating member and a corresponding stationary member defining a fluid sealing clearance passageway (63) in which the grooves are disposed. When the pump shaft (7) is rotated, the air flow created in the passageway (63) by the rotating grooves (73) deters the lubricating fluid from migrating away from the bearing frame (49,51).

Abstract: A motor driven environmentally safe pump includes a sealed motor housing (22) sealingly affixed to a sealed pump housing. The pump housing defines a fluid pumping chamber (43) in which is a fluid pumping impeller (46). A triplex rotating seal (31) is disposed rearward of impeller (46) within an annular fluid chamber (87) so as to prevent the fluid being pumped via the impeller (46) from leaking along the shaft (23) toward the motor (21). A piston seal (32) is provided adjacent a second fluid chamber (204), the piston seal also for preventing fluid from leaking into the motor housing and damaging the motor.

Abstract: A motor driven environmentally safe pump includes a sealed motor housing (22) sealingly affixed to a sealed pump housing. The pump housing defines a fluid pumping chamber (43) in which is a fluid pumping impeller (46). A triplex rotating seal (31) is disposed rearward of impeller (46) within an annular fluid chamber (87) so as to prevent the fluid being pumped via the impeller (46) from leaking along the shaft (23) toward the motor (21). A piston seal (32) is provided adjacent a second fluid chamber (204), the piston seal also for preventing fluid from leaking into the motor housing and damaging the motor.

Abstract: In a gas turbine, the exhaust gas casing (5) consists of a ring-shaped hub-end inner part (6) and a ring-shaped outer part (7), which parts bound a diffuser (9) and are provided with a horizontal split plane. The exhaust gas casing merges into an exhaust gas duct, whose boundary walls likewise consist of a ring-shaped hub-end inner part (16) and a ring-shaped outer part (17). The split locations between the exhaust gas casing and the exhaust gas duct are configured as flange connections (7A, 17A and 6A, 16A respectively). The flanges (7A, 17A and 6A and 16A respectively) at the split locations have a conically extending contact surface.

Abstract: An environmentally leak-proof pump is provided including: an environmentally leak-proof motor housing having located therein a motor for rotatably driving a rotating shaft; a piston seal axially forward of the motor; and an oil misting chamber disposed between the motor and the piston seal, the misting chamber for simultaneously providing lubrication to two coaxially disposed spaced apart bearings. The oil mister (34) includes a dispenser (260) fixed to a rotating shaft (23), the dispenser having a plurality of nozzles formed by bores (262 and 263) on opposing sides of the dispenser body. Each bore communicates with a passageway (264) thus allowing each nozzle to continuously direct a flow of lubricating liquid or mist toward adjacent bearings (35 and 36).

Abstract: A protection system for pump shaft bearings which are exposed to water or water combined with various particulate material when the pump and the shaft or a portion thereof are immersed in the water or combined water and particulate material which is being pumped. The protection system includes an enclosing chamber associated with the bearing or bearings supporting the pump shaft which are immersed in the material being pumped with the enclosing chamber being filled with grease exiting from the bearing so that the pressurized lubricant to the bearing will maintain the enclosing chamber filled with grease to exclude the material being pumped from the enclosing chamber and bearing assembly disposed therein. The enclosing chamber is associated with and connected to a conventional flanged shaft bearing and includes grease seals associated with the pump shaft to maintain the interior of the enclosing chamber in isolated relation to exterior environmental conditions.

Abstract: The invention relates to a turbomolecular vacuum pump (1) with a rotor (6) and at least one antifriction bearing (17) for the rotor, the stationary ring (19) of the antifriction bearing being seated on the wall of a sleeve (21) which in turn is supported through at least two O-rings (26, 27) made from an elastic material on a casing section (13) of the pump. To improve the heat flow from the sleeve (21) to the casing (13) of the pump, the annular space (29) formed by two seal rings (26, 27), the sleeve (21) and the pump casing (13) is filled with a medium (31) promoting heat flow from the sleeve to the adjacent part of the casing.

Abstract: A machine for pumping liquid chlorine employs an upright shaft sump pump which is confined in a hermetically sealed housing and has a tubular supporting element surrounding the pump shaft. The latter is mounted in overhung position and is adjacent to a pressure pipe which conveys the pressurized liquid. The shaft seal is kept out of contact with the liquid by the housing as well as by a body of inert gas which is supplied to the interior of the housing and to the space between the shaft and the tubular element at a pressure depending on the pressure of inflowing liquid chlorine and being sufficiently high to prevent the inflow of liquid chlorine into the housing and/or tubular element when the pump is idle. The main impeller on the pump shaft is made integral with an auxiliary impeller which constitutes a hydrodynamic shaft seal and prevents the flow of conveyed liquid chlorine into the tubular element from below.

Abstract: A single-stage or multi-stage centrifugal blower for hot fluids has a rotor whose housing is made of steel or carbon filaments and whose vanes are made of a ceramic material. The internal surface of the housing is shielded from hot fluids by a lining which is made of a heat-resistant and heat-insulating material and which shares the angular movements of the rotor. The housing can stand pronounced tensional and bending stresses, and the vanes and the lining are designed to stand the pressure of the conveyed and/or compressed fluid or fluids. The blower can be used as a turbine, a suction fan or a pump and can convey gases whose temperature is in excess of 1600.degree. C. and whose pressure is in the range or in excess of 2000 mm water column.

Abstract: The free-flow pump has an impeller housing (9, 10) laterally of its free flow chamber (4), and the impeller (6) is located in the impeller chamber (9, 10). The external, radial limiting member (10) of the impeller housing is drawn forwardly into the free flow chamber so as to decrease in the direction of rotation from the housing tongue (11) to the pressure pipe outlet. The limiting member (10) causes a constriction in the external portion (4') of the flow chamber, and such constriction decreases from the housing tongue towards the pressure pipe outlet. These measures permit the pump characteristics to be improved, and in particular the throttle characteristic of the free-flow pump can be stabilized.

Abstract: A turbine installation comprises flow passage-defining means defining an inlet chamber and a runner chamber and including two juxtaposed interconnecting passages which connect the inlet chamber and the runner chamber and are disposed on opposite sides of an axial center plane, and spaced apart in an intermediate part of their length, a turbine runner rotatably mounted in said runner chamber, an electric generator disposed outside the flow passage-defining means, and an output mechanism extending through the space between the two interconnecting passages, and operatively connecting the runner to the generator.

Abstract: A fluid-locked shaft seal comprises a housing with a shaft rotating therein having a seal ring affixed thereto for rotation therewith. A packing ring is disposed in the housing around the shaft and is fixed radially in respect to the shaft but is held by flexible means which permits its axial movement to some extent. A slide ring in the housing around the shaft is located between the seal ring and the packing ring and connected to the shaft for rotation that is substantially half the speed of rotation of the shaft. A pump rotor is formed with the seal and disposed on the side of the seal ring which is adjacent to the slide ring and generates a fluid flow in a deflecting channel which is defined in the housing by slide ring and the seal ring. A plurality of stationary impellers are disposed in the deflection channel and the slide ring has a turbine portion disposed in this channel.

Abstract: A centrifugal pump having a rotatably driven impeller for drawing liquid into the center of a pump housing through an inlet port and for forcing the liquid to the periphery of the pump housing and out an outlet port. The centrifugal pump is adapted to prevent the liquid that has been forced to the periphery of the pump housing from "short circuiting" back to the center of the pump housing.

Abstract: This invention is concerned with a centrifugal pump, particularly adapted for pumping liquids with a heavy gas content. To separate the gases from the liquids the impeller is provided with ducts leading from the central inlet to the peripheral outlet of the pump, the ducts being of progressively smaller cross section from the inlet to the outlet and openings are provided through the impeller disc for the escape of gases. There are a plurality of openings and the cross sectional area presented by the openings for the escape of gas is progressively lesser from the inlet region to the outlet region.