Abstract: A water pump includes an impeller provided on an end of a rotational shaft supported on a body through a bearing, a mechanical seal provided between the impeller and the bearing, a draining hole guiding a coolant leaked from the impeller side to a reservoir provided at a bottom of the body via the mechanical seal, a vapor outlet provided above the reservoir for establishing communication between the reservoir and the atmosphere, and the draining hole opening to the reservoir at a lower level than the vapor outlet. An axis of the reservoir is offset from a vertical plane which passes through an axis of the rotational shaft.

Abstract: The discharge water means (1m) is provided within an area equal to or more than an area of the shroud extending to 20 degree points in both directions from a center that is a lowest portion of the ring portion (1h). Due to this, if water drops adhered to the surface of the blade wheel (1a) and the shroud (1c) are collected at the lower side thereof due to gravity, it is possible to readily discharge the water. As a result, as it is possible to prevent the water drops from being stored in a clearance between the blade wheel (1a) and the shroud (1c), even when the temperature of the atmosphere is low in a winter season or the like, it is possible to prevent a freezing lock phenomenon from occurring.

Abstract: A pump apparatus for conveying a gas-liquid mixture comprises a first pump (7) for conveying gas with a first pump chamber (28) and a first impeller (33), a second pump (11) for conveying liquid with a second pump chamber (36) and a second impeller (41), and a drive device (2) with a rotary-driveable drive shaft (4) for driving the pumps (7, 1 1), the drive shaft (4) being connected to both impellers (33, 41).

Abstract: An airfoil configured for removing moisture from the steam flow path and injecting steam into the steam flow path of a steam turbine.

Abstract: A system in a steam turbine for removing water droplets from the flowpath of a steam turbine that may include a groove for collecting water droplets, and a plurality of moisture removal holes originating within the groove. The groove may run in a circumferential manner around an outer sidewall of the steam turbine, be axially positioned upstream and in close proximity to the leading edge of a nozzle, and have a gradual slope at a leading edge and a steep wall at a trailing edge. The moisture removal holes may be a channel through the outer sidewall through which the water droplets that collect in the groove may flow.

Abstract: A vent fan is for directing a fluid along a vent pipe. The vent fan has a housing defining an inlet, an outlet and an internal space for a fluid flow path. A separating wall divides the internal space into an inlet and outlet chamber. The vent fan also includes first and second baffles to block the fluid flow from traveling into the outlet and inlet chambers respectively. The separating wall may also include at least one fin for directing the fluid flow towards a first passageway.

Abstract: The wet steam exiting a low pressure steam turbine does not rapidly attain thermodynamic equilibrium because insufficient condensation nuclei are present in the phase transition zone inside the turbine. Therefore, the steam is subcooled, decreasing the power generated by the turbine, and the liquid water carried by the steam consists of relatively coarse droplets which strike the surface of the turbine blades causing erosion. Corona electrodes installed inside the turbine before the saturation line create electrically charged particles which serve as condensation nuclei, decreasing subcooling, and producing a large number of fine droplets. Thereby, thermodynamic equilibrium is more closely approached, more power is generated, and smaller water droplets cause less erosion inside the turbine.

Abstract: The air duct leading to a compressor for a gas turbine or the like often has water accumulating on walls and other structures. Water is removed from the compressor air inlet duct by drains connecting to the inside of the duct, including horizontal and vertical walls and the lower wall or floor of the duct. Drains are also provided on hollow structures such as struts, air inlet cone and inlet guide vanes upstream from the compressor. A suction pump or blower lowers pressure in the drain(s) to a pressure less than air pressure in the duct adjacent to the drain outlet for positively sucking water from the drain.

Abstract: A steam-driven turbine system for a power plant in which a high pressure and a low pressure turbine are coupled to a common shaft to drive an external generator. Process steam supply is used as gland sealing steam for the low pressure turbine and turbine driven steam pumps. The high pressure turbine has glands that are self sealing at higher generator outputs, and thus the turbine utilizes the process steam supply for gland sealing only during startup or at low generator outputs. The excess or “spillover” steam that is produced by the high pressure turbine at higher generator outputs is diverted away from the main condenser and/or low pressure feed heater. The spillover steam, which is normally waterlogged, is first passed through a separator to remove excess moisture. The spillover steam is next passed through a superheater to raise its temperature. The spillover steam is then directed to the low pressure turbine and/or turbine driven steam pumps so that it may be used as gland sealing steam.

Abstract: A silencer for a ventilation system, for example a gas turbine air intake system, includes first and second body sections spaced from each other to define a gas flow path therebetween. Methods of attenuating noise from a gas turbine air intake includes directing air from a dirty air plenum of a gas turbine air intake system through an air flow path defined by first and second body sections.

Abstract: An oil separator for use in a compressor for separating oil from refrigerant. The separator includes a discharge line having an inner surface, a structure in the discharge line forming an inlet and an outlet within the discharge line, wherein the inlet has a wider diameter than the outlet; and a design for preventing oil from exiting the outlet and means for directing the oil out of the discharge line. In one embodiment, the structure is a substantially circular wall, and wherein the design for preventing is the shape of the wall and relative orientation of the wall to the discharge line. In one embodiment, the relative orientation is such that the discharge line has a flow direction with a horizontal component of orientation and the wall has a vertical component of orientation relative the horizontal component.

Abstract: Disclosed herein is a cool air circulating blower for a refrigerator. The blower comprises a blowing fan for blowing cool air, a motor for driving the blowing fan, and a shroud for guiding the cool air leaving the blowing fan. The shroud is designed to suppress generation of turbulence in such a manner that the cool air leaving the blowing fan is dispersed quickly and condensed water obtained by condensation of moisture laden in the cool air is guided to some places other than the motor, whereby the noise caused due to the turbulence is reduced, the power consumption is decreased, the blowing efficiency is improved, and any breakdown of the motor due to the condensed water is prevented.

Abstract: Apparatus for pumping a pulp suspension and simultaneous abduction of gas from the suspension is disclosed. The apparatus comprises at least one pulp pump including a pump housing with an inlet, a first outlet for the suspension, and a second outlet for the gas. The gas outlet is connected to at least one external vacuum pump by a gas conduit including a substantially vertical portion having a maximum height, located on a level above the pulp pump, and a flushing water supply for the supply of flushing water to the gas conduit connected above the substantially vertical portion of the gas conduit.

Abstract: A filtration vessel is shown for use with a rotary screw compressor which receives a compressed liquid/gas mixture from the compressor. The vessel utilizes a first stage vortex knockout region to remove bulk liquids through a circular motion which imposes centrifugal forces on the gas and liquid mixture. A coalescer region located above the vortex knockout region receives the relatively lighter fluids and separates any remaining entrained liquids from the fluids. The discharge from the filtration unit is an essentially liquid free compressed gas. The liquid discharge, in the case of lube oil can be recirculated to the compressor for another cycle.

Abstract: A process fluid recycle system for compressor assemblies to recycle process fluid vapor flowing from one or more compressors to gear case(s) through shaft seal(s). The flowing process fluid is recycled back to the low pressure inlet of the compressor assembly by way of a recycle conduit. Coalescing filters are provided to separate oil mist from the process fluid vapor. Oil vapor and water vapor can also be removed, where necessary, by suitable oil and water vapor traps. During startup and shutdown or other times when low pressure transients occur that could cause a back flow of gear oil from the gear case into the compressor(s) by way of the shaft seal(s), an anti-back flow compressor is operated to ensure that the pressure within the gear case will be less than within the compressor.

Abstract: A process fluid recycle system for compressor assemblies to recycle process fluid vapor flowing from one or more compressors to gear case(s) through shaft seal(s). The flowing process fluid is recycled back to the low pressure inlet of the compressor assembly by way of a recycle conduit. Coalescing filters are provided to separate oil mist from the process fluid vapor. Oil vapor and water vapor can also be removed, where necessary, by suitable oil and water vapor traps. During startup and shutdown or other times when low pressure transients occur that could cause a back flow of gear oil from the gear case into the compressor(s) by way of the shaft seal(s), an anti-back flow compressor is operated to ensure that the pressure within the gear case will be less than within the compressor.

Abstract: The invention relates to a method of draining condensate from a reservoir that communicates with a trap via a drain pipe. The reservoir is subjected to a gas pressure p(reservoir) that can be below atmospheric pressure p(air) or above atmospheric pressure p(air). The method involves the following steps: a) collecting condensate in the reservoir, b) acquiring the fill level by means of a level meter, c) providing a control pressure p(control) which, in any operating conditions of the compressed gas system, is above the pressure p(reservoir) in the reservoir and above atmospheric pressure p(air), d) providing, under control, a control conduit input of an exhaust valve, which is assigned to the reservoir and is intended to drain the condensate collected in the reservoir, with a pressure p(input).

Abstract: A sealing system to prevent loss of a process fluid from a device having a device opening and a rotating member operable for rotational movement within the device opening. A rotary shaft seal such as a labyrinth seal, seals the rotating member in the device opening to inhibit leakage of process fluid. A chamber is connected to the device to recover leakage of the process fluid that leaks from the rotary shaft seal. A barrier seal is connected to the chamber to inject a barrier fluid under pressure to prevent the escape of process fluid from the chamber. The chamber discharges a mixture of barrier and process fluid to a filter, such as a coalescing filter, to separate the barrier fluid from the process fluid. Barrier fluid vapor and water vapor traps can also be used for purification purposes. The barrier fluid is recovered and recycled back to the barrier seal. The process fluid is returned to the device.

Abstract: Drainage is enhanced in an orifice formed inside the internal passage of a pneumatic line by providing the orifice with first and second portions. The first portion defines a diameter that is smaller than the diameter of the internal passage, and the second portion defines a progressively increasing diameter. Generally, a first end of the second portion has a diameter that is equal to the first portion diameter, and a second end of the second portion has a diameter that is equal to the internal passage diameter.

Abstract: Apparatus and a process are described, wherein furnace flue gas, containing moisture, is expanded through a pressure drop sufficient to cause saturation of the gas. The resulting condensation of water increases the mass of particles, making them easier to separate from the gas. Acid components of the flue gas may be similarly rendered more easily separable. These wetted particles are then separated and removed from the flue gas. The cleaned flue gas is then compressed backup to chimney pressure for discharge. A flue gas cleaner of this invention thus renders particle forming fuels, such as low cost coal, more readily useable, while meeting appropriate particle emissions requirements.

Abstract: Centrifugal pumps are disclosed for pumping a pulp suspension including a housing, a rotary shaft mounted within the housing, an impeller including a hub and blades, a wheel disk mounting the blades and including openings for discharging gas generated in the pump, vacuum blades mounted on the hub behind the wheel disk, a vacuum housing enclosing the vacuum blades, the vacuum housing including an outer cylindrical wall which is radially displaced and eccentrically disposed with respect to the vacuum blades, the vacuum housing including a front wall and a rear wall separated from the vacuum blades by a gap, the rear wall being axially adjustable so that the gap between the vacuum blades and the rear wall can be adjusted to adjust the vacuum generated thereby, and a passageway for communication between the openings in the wheel disk and the suction opening.

Abstract: To remove moisture from the steam flow path of steam turbines, one or more grooves are located on the pressure or concave side of the steam turbine stationary and/or rotating airfoils. The grooves are oriented predominantly radially and are disposed close to the airfoil trailing or exit edge. Moisture deposited on the surface of the airfoil flows into the groove and, due to pressure and/or centrifugal forces, the moisture flows to the turbine inner or outer sidewall and, thus, is available for removal from the steam path in the same blade row in which it was first deposited. An advantage of removing moisture in the blade row in which it was first deposited is that it reduces efficiency losses associated with the chronology of the moisture downstream of the airfoil trailing edge.

Abstract: An apparatus for evacuating liquid condensation from pipe systems which is particularly applicable to exhaust pipe systems in high efficiency furnaces. The apparatus forms a junction sleeve between two pipes and has drainage channels which prevent condensate liquid from flowing from one pipe into the other pipe. A thermoplastic rubber composition of the apparatus dampens noise and vibration in the pipe system. External grooves provide locating features for mounting clamps.

Abstract: An extracting blower that removes liquid and solid contaminants from supply air, and provides high velocity air for cooling equipment, personnel and/or structures. The blower uses air velocity and the centrifugal force of a rotating fan to separate the contaminants into a rear partitioned chamber of the fan housing and out a rear scavenging air exhaust, while blowing clean air out the main air blower.

Abstract: A method for draining condensate off a compressed-gas system that traps condensate that collects during operation of the compressed-gas system, draws off collected condensate through an outlet, connects a trap volume and a purging device to the outlet, connects a collection chamber to the outlet, detects the presence of condensate in the collection chamber by at least one sensor, connects control electronics to the sensor, controls a valve arrangement by the control electronics that either shuts the purging device so that no condensate can escape through it or opens the purging device each time the condensate level rises and the sensor changes over from indicating “no condensate” to indicating “condensate present”, starts the timer circuit and on expiry of the time defined by the timer circuit, opens the valve until the sensor indicates “no condensate” thereupon closing the purging device with the valve.

Abstract: The invention relates to a steam turbine, in particular a high-pressure turbine, which is enclosed by an inner casing, split into a top part and a bottom part, and an outer casing. The steam turbine, for the purpose of bleeding, has a bleed slot, which leads form the blade duct of the steam turbine through the inner casing. According to the invention, the inner casing has a shrink ring, which on the one hand holds together the bottom part and the top part of the inner casing and on the other hand forms an annular space above the bleed slot for the purpose of collecting bleed steam and passing it into a pipe connection. The shrink ring has a cavity in its center and flat sides being adapted to the outer surface of the inner casing. The cavity of the shrink ring, together with the outer surface of the inner casing, forms the enclosed, tight annular space. the shrink ring is distinguished by the few components and a short production and assembly time.

Abstract: A compression-pumping system for a multiphase fluid (GLR) includes a compression section, a pumping section, a shaft and a separator. The compression section is sealed off from the pumping section, and the pumping section and the compression section are included in the same enclosure and mounted on the same shaft. The compression-pumping system is associated with a liquid level control system situated at the level of the separator.