Stein Industrie

Societe Anonyme Dite: Stein Industrie

Electricite De France

Jacques Marjollet

Roger Bessouat

Gerard Tondeur

Gerard Palacio

Jean-Jacques Marsault

Marc Franzolini

Jean Andro

Patrick Talleu

Jean-Pierre Cerdan

Pierre Pouderoux

Jean-Claude Mevel

Boris Perras

Olivier Lacoste

Pascal Alias

Francois Carpentier

A superheat bundle for a horizontal tube steam separator-superheater, in which the tubes are disposed inside a rectangular frame (4) which is not rigidly connected to the structure of the separator-superheater. The frame is provided with resilient blades (7, 8) forming a flexible skirt bearing against side plates (2, 3) which are themselves rigidly connected to said structure. The invention is applicable to stations for producing electricity or steam.

Superheat bundle for a horizontal tube steam separator-superheater

In a method and device for protecting against erosion and/or corrosion steam pipes of the high-pressure stage of a power and/or steam generation plant saturated steam turbine, at portions of its low-pressure stage and at heaters of the heat exchanger installation of the power and/or steam generation plant, the major part of the water contained in the offtakes and the wet steam outlets of the high-pressure stage is separated out by centrifugal means. A first fraction of the steam partly dried by this means is superheated and/or final dried and then fed into the portions of the low-pressure stage of the turbine and a complementary fraction of the partly dried steam is fed to the heaters. The first fraction and the complementary fraction of the steam are dried together by centrifugal means after which the complementary fraction is final dried by centrifugal means.

Method and device for protecting against erosion and/or corrosion steam

The flow control device for a steam circulating heat exchanger tube (2) comprises an insert (4), secured in the tube by expansion in a zone (9) near the end of the exchanger tube or of the tube sheet (1) orifice provided in lieu of said tube, and an orifice plate (7) made from an erosion-corrosion resistant metal and secured inside the insert upstream from the bulged zone (9) created by expansion, from the standpoint of fluid flow, said insert extending for a considerable length downstream from the orifice plate. The insert includes an upstream tubular member (5) made from a metal having a low yield strength but a high elastic elongation ratio and a downstream tubular member (6) made from a metal resistant to erosion-corrosion and at least as long as ten times its inside diameter, ending in a bevel (12) tapering outwardly at an angle of less than 15.degree..

Flow control device for heat exchanger tube

This steam separator superheater comprises a horizontal axis cylindrical shell (1) enclosing in its lower portion a steam and moisture separator and in its upper portion a two-stage steam superheater resting on running paths supported half way up the shell by a frame (5). Each stage of the steam superheater is constituted by two bundles of hair-pin bent tubes (15, 16 and 17, 18) supplied with superheat steam from steam chests (43, 44, 45, 46). The upper stage rests on the lower stage. Both stages are inserted into the shell via sleeves (47, 48) outside the shell and extending loading openings made through an end plate (2) of the shell. The upper stage is lifted into position by lifting gear outside the shell (1) acting by means of lifting lines passing through passages (49) in the shell. The passages are closed by caps (51) when the separator superheater is in use.

Method of assembly of a steam separator super-heater

A heat exchanger device for drying and then superheating steam, has a cylindrical casing about a horizontal axis. The casing contains:

Heat exchanger device for drying and superheating steam

Steam separator superheater and method of assembly

The present invention relates to a device providing anti-seismic support for an apparatus immersed in the bath of liquid alkali metal surrounding a fast neutron nuclear reactor, and abutting by a flange on a slab traversed by the apparatus and resistant to the load that it constitutes, wherein the flange for supporting the apparatus is connected to a sleeve for elastically taking up the horizontal displacements of its top part, independently of an inner envelope of the apparatus and on which a framework for supporting the apparatus whose bottom part is connected to the inner envelope, is fixed at a level determined as a function of the most dangerous earth tremor frequencies.

Device providing anti-seismic support for an apparatus immersed in the

The apparatus comprises: (a) stacked bundles of parallel corrugated wafers (4) between which the liquid droplet charged gas or vapour is made to flow, said bundles being housed between panels (e.g. 1) which are welded round all their edges to a support structure so as to define a horizontal gas or vapour flow direction between adjacent wafers; (b) gutters (9, 10, 11) for collecting the liquid running down the wafers, each gutter being located below a bundle of wafers; and (c) liquid drain tubes (12, 13, 14) for draining away the liquid collected by the gutters. The lower edges of the wafers are notched in such a manner as to catch drops of liquid flowing along said lower edges and cause them to drop into the gutters rather than being entrained by the flow of the gas or vapour. Such apparatus is used in separator-superheaters as used in power stations that generate electricity by expanding steam through turbines.

Apparatus for separating droplets of liquid entrained in a gas or a vapor

A vertical separator for separating liquid or solid particles from a mixture of the particles and a vapor or a gas, said separator including, inside an outer casing a chamber for admitting the mixture, a plurality of vertical tubes whose ends are provided with fixed blades which impart a helical movement to the mixture and whose outlets are provided with a coaxial tube whose diameter is smaller and which allows dry vapor or gas to be removed in an inner tube and a mixture containing a higher proportion of liquid or solid particles to be removed in the annular space which leads into a free chamber where said mixture which contains a higher proportion of liquid or solid particles is allowed to be separated into substantially dry vapor or gas and a fluid which contains little vapor or gas. At the bottom of said free chamber, the separator has an upwardly convex bottom, an annular space for collecting the fluid which has a low vapor or gas content and passages which are regularly disposed between the tubes and which allow the substantially particle-free vapor or gas to escape upwards. Application to drying steam.

Vertical separator for separating liquid or solid particles from a vapor

Apparatus for distribution and preliminary separation of a vapor-liquid mixture in a separator with horizontal axis, from a neck 10 on the lower generatrix of the separator, it comprising two symmetrical deflectors 11, 12 in the form of portions of cylinders, with parallel axes perpendicular to that of the separator, each cut by two oblique planes, and completed by three partitions 17, 18. Their edges are provided with troughs 21 for collecting and discharging the water deposited on their concave surface, issuing into spaces separated from the neck. The invention has application to separator-superheaters for wet water vapor from an expansion turbine.

Apparatus for distribution of a mixture of vapor and liquid in a

A vertical steam separator-superheater which has a common casing (1) enclosing a lower separating portion (3) and an upper superheating portion (4). The separator-superheater includes an axial dry steam inlet zone, nests (16, 17) of superheating tubes disposed in envelopes spaced out round the central zone and fixed to a thin flexible casing (30) which is itself fixed to the upper portion of the common casing and an outer superheated steam collection zone (18). The lower portion includes a wet steam inlet chamber (5) and separators grouped in two coaxial truncated pyramide (10, 11).

Vertical steam separator-superheater

The device includes inside a cylindrical casing with a horizontal axis and parallel to said axis and symmetrical about the longitudinal plane of symmetry:

Device for drying and superheating steam

A vertical steam separator-superheater suitable for drying and superheating steam coming from a high-pressure expansion turbine. The separator-superheater has a common casing (1), enclosing a lower portion (3) which forms a separation zone and an upper portion (4) which forms a superheating zone, which has an axial dry steam inlet zone (15). Nests of superheater tubes are disposed in tubular modules 16 and 17 which are spaced out around the axial zone. A peripheral superheated steam collection zone (18) surrounds the superheater modules. The tubular modules of the superheater tubes are fixed to a thin flexible casing (30) which is itself fixed to the upper end (31) of the common casing. This arrangement reduces the number of expansion bends which would otherwise be required.

A vertical separator for separating the liquid and vapor phases of a fluid. The separator includes an outer casing having an inlet chamber for the vapor-mixture and vertical tubes provided at their inlets with fixed vanes which cause the mixture to flow helically. Coaxial tubes at their outputs, of smaller diameter enable dry vapor to be removed. A mixture with an increased liquid content is caused to be removed through the annular spaces, between the coaxial tubes. The annular spaces communicating with a free space in which said mixture with increased liquid content is separated into dry vapor and a liquid which still contains some vapor, and said inner tubes communicating with a dry vapor collecting chamber. An annular edge allows the vapor which is still contained in the liquid to escape upwardly through an annular peripheral passage between said annular edge and the outer casing.

Vertical separator for separating a mixture of fluid phases

An assembly of two plane flanges of possibly different flexibilities clamped together by studs. It comprises sealing means including a lip weld in the plane of the join and centering rings disposed around each stud in each bore. Application to flanges connected to asymmetrical structures such as a collar and a cover.

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Paris, France

Jacques Marjollet