Abstract: The invention is directed to a spray cooler for regulating the temperature of superheated steam with a stream of cooling water. Its primary inventive feature is directed to a throttle area which has a continuously widening cross section disposed on a piston rod and arranged between the cooling water inlet opening and the nozzles of the spray cooler. The throttle area serves to regulate the pressure the cooling water in proportion to the movement of the piston carrying the throttle.
Abstract: A steam desuperheater has a body extending into a steam line and is operated by a controlled variable water pressure source responding to the amount of superheat in the steam line. As the pressure of the supply line is increased above a predetermined level greater than the steam pressure in the steam line, a piston moves up against a calibrated spring to progressively uncover a plurality of spray openings so that increasing water pressure results in an increasingly greater amount of water sprayed into the steam line.
August 18, 1995
Date of Patent:
March 4, 1997
Timothy E. Kunkle, Allan K. Shea, Richard F. Kuntz
Abstract: The present invention relates to an aerating nozzle for aerating liquids containing organic substances. To keep the foam formation in organic substances to be aerated within a controlled limits, the present invention suggests that the angles of inclination of the side walls defining the liquid channel should nowhere be greater than 30.degree. relative to the longitudinal axis of the aerating nozzle which extends in the direction of flow, with the distribution bushing whose liquid channel is of a straight configuration being arranged such that is can be replaced by distribution bushings which differ in number and/or size of the gas entry openings.
February 17, 1994
Date of Patent:
March 5, 1996
Anton Steinecker Entwicklungs GmbH & Co.
Abstract: The present invention is a steam conditioning valve for use in simultaneously reducing temperature and pressure in a superheated steam line. The invention provides a butterfly-type valve with desuperheating water nozzles oriented on its downstream face. In the preferred embodiment illustrated, valving is included to control the flow of water to each of the nozzles selectively. The present invention provides an improved steam conditioning valve which is both simpler and more economic than existing steam conditioning valves or the combination of pressure reducing valves and desuperheaters.
Abstract: A desuperheater is disclosed which employs an acceleration orifice within a steam conduit to increase the velocity of steam flowing therethrough, creating a region of low pressure steam. A nozzle having an enclosed elliptical discharge orifice sprays small droplets of cooling water in a semi-elliptical hollow cone pattern directly into the region of low pressure steam flow. Evaporization of the cooling water into the steam is optimized allowing effective control of the steam temperature. Nozzle fouling and plugging is reduced because the droplet size created by the nozzle is small in comparison to the nozzle orifice.
Abstract: The invention relates to a method and apparatus for reducing steam pressure and temperature in a steam conditioning valve, in which steam flow is regulated with the aid of a valve plug (5) displaceably arranged in a valve seating (4), the plug being perforated by a plurality of holes (6), while cooling water is simultaneously taken into the upper portion (8) of the valve and is regulated in proportion to the regulation of process steam, said water being taken through a hollow valve spindle (7) passing through the plug (5) for discharge through a jet (12) downstream of the center of the departing steam flow. The plug (5) has at least one row of holes (14) in its central region (13). For small opening amounts of the valve (1) process steam is taken through at least one separate duct (15) up to and past the coolant outlet from its openings (16) such as to flow past and break up the coolant, which is ejected from the duct (15) in the vicinity of, and just above the coolant outlet openings (16).
Abstract: A spaced apart pair of plates in a steam bypass conduit provide pressure reduction and desuperheating of the steam. The plates have holes, some of which are equipped with nozzles that discharge water axially at the nozzle exits or radially at the throats. The nozzles are formed by inserts that form annular spaces communicating with a network of water supply conduits in the plate. Water discharge jets communicate with the annular spaces.
Abstract: The present invention inserts and retrieves a desuperheating assembly from within a pressurized steam header through an existing conduit that joins the steam header to the surrounding environment. A gate valve is disposed within the connecting conduit obstructing access to the steam header when closed. The spray nozzle of the desuperheating assembly is attached to a fluid supply pipe and is placed within the conduit on the side of the gate valve that is exposed to the ambient environment. A gas impervious seal is produced between the conduit and the fluid supply pipe so as to isolate the spray nozzle between the gate valve and the gas impervious seal. The gate valve is opened exposing the spray nozzle to the steam header. The supply pipe is advanced past the gas impervious seal, which in turn, drives the spray nozzle into the steam header.
Abstract: The invention relates to improvements in or relating to a desuperheater for controllable injection of cooling water in a steam or gas line (17), said desuperheater device including an insertion tube (1) extending inside the pipe (17), said tube (1) having a conical outlet nozzle (7) with a valve body (5) movably arranged in a hole (2) in the insertion tube (1) such as to form a regulating port (4). The hole (2) in the insertion tube (1) opens out into a rotation chamber (3) with the centerline (10) of the hole and the centerline (11) of the rotation chamber (3) disposed relative each other at an angle deviating from 90.degree. by an angle .alpha., and where the angle .alpha. is greater than 0.degree. but less than 30.degree..
Abstract: A steam injector system comprises a plurality of steam injectors each being provided with with a check valve adapted for water supply, a check valve adapted for steam supply, a check valve adapted for overflow and a check valve adapted for discharge and the respective water check valves, steam check valves, overflow check valves and discharge check valves are connected. In another aspect, a steam injector system comprises a plurality of first to last stage steam injectors arranged in series with each other, the last stage steam injector being provided with a relief valve disposed at a last stage overflow drain port, and a pressure pulsation absorbing device is disposed at least between the last stage overflow drain valve and the relief valve.
Abstract: A device for collecting used steam from a steam-power operated apparatus includes a low pressure tank connected to the steam-power operated apparatus and a collecting tank provided downstream of the low pressure tank. The collecting tank has a top and a bottom. A condensate recycling pipe has a first end connected to the bottom and a second end directed toward the top. A suction chamber is provided in the collecting tank adjacent to the top and has a top inlet and a bottom outlet. A nozzle is provided at the top inlet and connected to the second end of the condensate recycling pipe. A pump is connected to the condensate recycling pipe for pumping condensate from the collecting tank into the condensate recycling pipe. A suction pipe has a first end connected to the low pressure tank and a second end connected to the suction chamber adjacent to the nozzle.
Abstract: The invention relates to a close-coupled hot gas bypass, system for a proportioning refrigeration controller that controls the refrigeration capacity within the pressurized system. This is accomplished through the use of a hot gas bypass line and a liquid line that are combined in a desuper heat chamber and then fed through to the vacuum line to compensate for changes in the vacuum line pressure. The unique construction of the desuper heat chamber allows for vertical or horizontal placement in retrofit applications. The use of a thermal expansion valve for providing cooling gas from the liquid line to cool the hot bygas as the need arises allows for continous use of the system without the need for an accumulator in the vacuum line to prevent liquid slugging common in close-coupled systems.
Abstract: An attemperator for spraying water into a flow of steam utilizes a spray nozzle head having an inner Venturi passage. The head defines an annulus around the passage with an annular opening communicating the annulus with the interior of the passage. Side walls of the annular opening are inclined to converge at a focal point near the center of the passage. Steam passing through the Venturi passage picks up the spray which is finely atomized. A sleeve is threaded to the head for adjusting the size of the annular opening.
Abstract: A spray desuperheater maintaining a desired homogeneous spray pattern throughout the full range of operation, including relatively low rates of flow. Water flows to a spray orifice through a variable-geometry control which constricts at flow rates below the minimum flow required to maintain pressure control across the spray nozzle. This constricted flow increases the velocity of the water tangentially entering a spin chamber leading to the spray nozzle. The increased velocity of water at the lower rates of flow, combined with the spin imparted to the water, maintains the desired homogeneous spray pattern at the lower flow rates. The variable geometry control is fully open at flow rates sufficient to sustain pressure control at the spray nozzle, and a fixed-geometry control adjusts a higher range of flow rates.
Abstract: The present disclosure sets forth a method and apparatus for adjusting the rate at which water is introduced as a cooling and decelerating fluid in mist form into a discharge vent for high velocity superheated steam. An optimum measure of water is determined so that the steam is decelerated to a velocity not lower than about 35% of sonic velocity. Moreover, air is educted into the steam flow to further enhance the cooling and deceleration of the steam which is then vented. By the introduction of air and water mist, the steam is cooled and decelerated, thereby avoiding formation of a sonic wave creating unwanted backpressure and avoiding creation of noise.
Abstract: Steam distribution lines may be adapted for desuperheat without being removed from service by adding a branch conduit and a closure valve, hot tapping the line through the closure valve and adding a desuperheater apparatus including an elongated injection conduit with water injection nozzles disposed near the distal end thereof. An insertion and retraction device is mounted on the valve and supports the desuperheater apparatus for insertion of the desuperheat water injection conduit into the interior of the distribution line without interrupting steam flow. Temperature indicators and controllers are similarly installed on the distribution line downstream of the desuperheater apparatus.
Abstract: A system and the equipment for economically enhancing recovery of hydrocarbon fluids from a subterranean reservoir in which a plurality of production and injection wells are formed. High grade steam from a common source is mixed with relatively cold water at each injection well to be treated. To avoid, or substantially reduce condensation shock in the water/steam mixer, the high velocity cold water is initially heated in a steam compartment with minimal contact between the two fluids. Thereafter, the steam and the water are introduced to a heat exchange chamber in which the temperature of the water is raised prior to the two streams being merged for injection into a well as either heated water or as low quality steam.
Abstract: A valve housing in the form of a straight- or bent-passage valve accepts in the the valve seat between its steam intake and steam outlet a choking device in the form of a perforated bushing into which a cold-water pipe with jacket-side cold-water exits projects coaxially. A control piston is mounted in such a way that it can move inside the perforated bushing and around the cold-water pipe. The control surface of the piston simultaneously releases the cold-water exits in the cold-water pipe and the reduction bores in the perforated bushing, resulting in cooling of the steam and reduction of its pressure in the high steam-pressure range in accordance with load. The cold water is accordingly injected into the hot steam as it flows in and only then does the steam, enriched with cold water, pass through the reduction bores.
Abstract: A steam desuperheater comprising a liquid spray tube assembly positioned in a steam line and including a plurality of liquid outlet openings supplying liquid to plural spray nozzles, and a hollow piston plug axially movable therein upwardly from a lower valve seat to progressively open said outlet openings.
Abstract: A spray liner assembly supported in a pressurized desuperheater header of a steam boiler. The liner is cylindrical shaped and open at each end, and is attached and axially retained at one end to the cylindrical header inner wall by multiple adjustable brackets, and is slidably supported at the opposite end by similar brackets. The liner is also flexibly supported radially at dual points on opposite sides of the liner at an intermediate point along its length with each support using a captured metal ball, so as to provide a radial inward elastic loading to the liner and also permit longitudinal and radial expansion and contraction of the liner within the header.
Abstract: The steam throttle valve has a number of water injection ducts distributed around the valve axis within a thin-walled hollow member which extends around the valve axis. A thin-walled water supply duct in a bore in the valve casing cover supplies water to the hollow member. The member is annular and is retained between two assembled parts of the valve, namely the cover and a valve cage. Constructing the ducts in this way obviates thermal stress cracking near them.
Abstract: An attemperator in the form of a steam desuperheater is disclosed herein and comprises a water tube adapted to be connected to a source of water under high pressure and a spray tube communicating with the water tube through a flow-control device for controlling the flow of water from the water tube to the spray tube. The spray tube is adapted to be located in a steam line for injecting cooling water into the steam when its temperature exceeds a predetermined temperature and accordingly is formed with one or more nozzles for injecting a spray of water travelling along an expanding swirling path into the steam, the water being atomized into small droplets which easily evaporate in the steam. Preferably, a plurality of nozzles are provided arranged in rows extending axially of the spray tube and the rows are circumferentially spaced apart. Also, the nozzles preferably communicate with the inside of the spray tube through a series of small ports.
Abstract: An automatically regulated variable orifice desuperheater valve is disclosed which includes improved constructional features providing for a more compact installation then heretofore, one which is more reliable in operation and which is at the same time more economical to construct. The desuperheater unit has a welded-closed housing, which includes a concentrically mounted valve guide structure. The lower portion of the desuperheater valve housing structure is arranged so that, after the unit is welded closed, with the valve guide structure contained therein, the valve element may be inserted into the housing from the bottom or inlet opening, followed by a shouldered sleeve which functions as the valve seat. The sleeve is seated against a facing shoulder in the inlet opening of the valve housing, and is secured against such shoulder by appropriate means such as welding.
Abstract: A steam conditioning valve having a multi-turn labyrinth disk stack mounted between the inlet and the outlet of the valve is provided with a cooling fluid spray assembly for injecting the cooling fluid into the valve upstream of the labyrinth. The spray assembly includes a cooling fluid supply line extending through the valve housing without physically contacting the housing to prevent heat transfer between the cooling fluid line and the valve housing.
Abstract: In a steam reforming valve having pressure-reducing valve means for reducing the pressure of superheated steam at high temperature and high pressure and temperature reducing means for reducing the temperature of said superheated steam by spraying water thereinto, a perforated plate comprises a part fixed to a main structure of the steam reforming valve on the downstream side of the temperature reducing means with respect to the direction of flow of the steam within the main structure and a disc part held by the fixed part and having a plurality of through-holes for passing therethrough steam and sprayed water. The disc part is of a construction whereby it has a free end relative to the fixed part.
Abstract: An upright type spray attemperator for regulating the temperature of upwardly flowing superheated vapor and comprising a vessel fitted with an inner sleeve having a side outlet at the upper end thereof and containing a deflector adjacent the outlet to collect and return water droplets for further heating and wherein the outlet is formed of perforations sized to reduce the pressure of the steam passing therethrough so as induce flashing of any entrained water droplets and insure their complete vaporization.