SK75395A3 - Water separator - Google Patents

Abstract

A water separator (1) is customarily incorporated into the evaporation system of a steam generator with combined circulation. The water separator (1) to separate water from a water-steam mixture comprises a number of inlet pipes (4) arranged at an oblique angle of inclination (a) distributed around the circumference of a container (2) and a water outlet aperture (8) beneath the openings (10) of the inlet pipes (4) and an outlet aperture (6) for damp steam above the openings (10) of the inlet pipes (4). According to the invention, the central axes (M) of the inlet pipes (4) intersect at a point (P) beneath the openings (10) of the inlet pipes (4), on the vertical axis (A) of the container (2). With such a water separator (1), first of all steam-free water is separated out and also the remaining damp steam can easily flow off.

Description

Water separator

Technical field

The invention relates to a water separator for separating water from a water-vapor mixture with inlet pipes disposed circumferentially at an angle and inclined at an angle, a water outlet opening arranged below the inlet pipe outlets and a wet steam outlet opening arranged above the inlet pipe outlets.

BACKGROUND OF THE INVENTION

In the evaporator system of the instantaneous steam generator, a water-steam separator is installed downstream of the evaporator heating surfaces, downstream of the evaporator heating surfaces, which, in particular when starting operation, distributes the water-vapor mixture into water and steam.

In a flow-through steam generator in which the first part of the evaporator is to be mixed-circulated, only a partial flow of water is discharged downstream of the first part of the evaporator and is fed to the evaporator inlet. In this case, the drained water stream should be completely free of steam. The residual current supplied to the second part of the evaporator connected downstream of the first part of the evaporator, unlike the flow generator without circulating system, consists of a mixture of water and steam, so-called wet steam.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a water separator such that water can be separated from the water-vapor mixture, wherein the water is free of steam and the remaining wet vapor can flow unhindered, e.g.

Summary of the Invention ______ ________

This is accomplished by a water separator for separating water from the water-vapor mixture with inlet pipes disposed at the periphery of the vessel and arranged obliquely at an angle, with a water outlet aperture provided below the inlet pipe outlets and a wet steam outlet aperture arranged above the outlet pipe outlets, in which the axes of the inlet pipes intersect at a point lying below the outlets of the inlet pipes on the vertical axis of the container.

The angle of inclination of the axis of each inlet pipe relative to the vertical axis of the container is preferably in the range of 15 ° to 60 °, in particular in the range of 45 ° to 55 °. By slanting the inlet pipes, the water-vapor mixture entering the water separator is first directed downwards. In this case, the water is preferably collected in the lower part of the water separator container, the steam, together with the water not drained down, flows upwards in the axial direction and is discharged through the outlet opening.

The number of inlet pipes may vary according to the size of the water separator, the inlet pipes preferably being arranged symmetrically in each case. The axes of the inlet pipes preferably intersect at a point lying on the vertical axis of the container. As a result, by impinging the jets of the mixture on top of each other, the water is led to the bottom of the water separator container.

According to a preferred embodiment of the water separator, outlet pipes of a number corresponding to the number of inlet pipes are provided as the outlet opening, which are disposed on the periphery of the annular space and occupy a radial position relative to the inlet pipes.

In order to prevent the water-vapor mixture entering through the inlet pipes into the water separator vessel from being routed as a short-circuit current directly to the outlet pipes, fittings are provided inside the vessel for guiding the downstream flow of the mixture and turning the wet steam upward. These installations preferably have a design such that the planar parts lying above the inlets of the inlet pipes and the center are segmentally covered, therefore the water-steam mixture flow is forced to reverse direction. In this case, the assemblies can extend over parts lying above and / or below the outlets of the inlet pipes.

The inserts are preferably formed by cover plates arranged at least approximately perpendicular to the container axis and guide walls parallel to the container axis. Due to the forced downward flow thus created and the flow of the mixture 180 ° reversed, the water preferably enters the bottom of the water separator container.

BRIEF DESCRIPTION OF THE DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described in more detail with reference to the accompanying drawings, in which: FIG. 1 shows a longitudinal section through the water separator of FIG. 2, FIG. 2 is a cross-sectional view of the water separator of FIG. 1 with obliquely arranged inlet pipes and radially arranged outlet pipes and with flow conduits, FIG. 3 and 4 show another embodiment of a water separator in longitudinal section III-III and in cross section IV-IV.

Examples

Corresponding parts are provided with the same reference numerals in all figures.

The water separator 1 consists of a closed vessel 2 provided with obliquely arranged inlet pipes 4, radially arranged outlet pipes 6 and a coaxially arranged water outflow opening 8. Instead of the outlet pipes 6, one central outlet pipe may also be provided.

Angle a. the inclination of the axes M of each inlet pipe 4 relative to the vertical axis A of the container 2 is preferably in the range of 15 ° to 60 °, in the example shown, for example 45 °. Extensions of the axis M of the inlet pipes 4 intersect at a point P which lies on the vertical axis A of the container 2.

As shown in FIG. 2, in each case four inlet pipes 4 and four outlet pipes 6 are distributed uniformly over the circumference of the container 2 and arranged offset to one another. In this case, both the inlet pipes 6 and the outlet pipes 6 lie pairs opposite each other.

Above the outlets 10 of the inlet pipes 4 into the container 2, there is a central tube 12 in the central part of the container 2. The central tube 12 bears at its lower end the cover plates 14 arranged in a star or segmented manner and extends up to the lid 16 of the container 2; 6. segments 18 without built-in sections are formed.

The obliquely arranged inlet pipes 8 flow in the direction of the arrows 20 into the vessel 2 of the water-steam mixture. After the jets of water-vapor at each other point point to each other, wet vapor flows upward through the segments 18 and the outlet pipes 6 while the water dropped downwards is discharged through the drain hole 8. ·.

In the embodiment of FIG. 3 and 4, the assemblies are again formed by the central tube 12 'and the cover plates 14' arranged perpendicular to the axis A of the container 2, which are connected to the guide walls 22 arranged parallel to the axis A of the container

These guide walls 22 form segmented guide spaces and delimit within the container 2 the inlet regions 24a and the outlet regions 24b.

The water-vapor mixture entering the vessel 2 through the inlet pipes 4 is first led in the direction of the arrow 25 to the calming chamber 26 and divided into water and wet steam. The wet steam flow is reversed by 180 [deg.] And passes in the direction of the arrow 27 through the exit space 28 arranged above the plies 12 '. cover plates 14 'and guide walls 22, and outlet pipes 6 in the direction of the arrows 30 to the heating surfaces (not shown). The water separated from the water-vapor mixture in the calming space 26, which does not contain steam, is discharged through the outlet opening 8.

Claims (9)

PATENT CLAIMS Water separator (1) for separating water from a water-vapor mixture with inlet pipes (4) disposed on the perimeter of the vessel (2) and arranged obliquely at an angle (a), with a water outlet (8) arranged below the outlets (10) of the inlet pipes (4) and with the wet steam outlet (6) provided above the inlet pipes (10) of the inlet pipes (4), characterized in that the axes (M) of the inlet pipes intersect at a point (P) below orifices (10) of the inlet pipes (4) on the vertical axis (A) of the container 2. Water separator according to claim 1, characterized in that the inclination angle (α) of the axis (M) of each inlet pipe (4) relative to the vertical axis (A) of the container (2) is less than 60 °. Water separator according to claim 1 or 2, characterized in that the outlet opening is in the form of outlet tubes (6) corresponding to the number of inlet tubes (4) and which are distributed around the periphery of the container (2). arranged in front of the inlet pipes (4) and arranged radially. Water separator according to claim 1 or 3, characterized in that it is provided with inserts (12, 14, 12 ', 14', 22) for reversing the steam flow. Water separator according to claim 4, characterized in that the inserts (12, 14, 12 ', 14', 22) form a segmented separation of the inlet regions (24a) and the outlet regions (24b). Water separator according to claim 5, characterized in that the segments forming the inlet regions (24a) are covered above the outlets (10) of the inlet pipes (4). Water separator according to one of Claims 4 to 6, characterized in that the inserts (12, 14) extend in the region above the outlets (10) of the inlet pipes (4). Water separator according to one of Claims 4 to 6, characterized in that the inserts (12 ', 14', 22) extend in the area below the outlets (10) of the inlet pipes (4). A water separator according to claim 8, characterized in that the assemblies (12 ', 14', 22) consist of cover plates (14 ') arranged at least approximately perpendicular to the vertical axis (A) of the container (12) and of guide guides walls (22) arranged parallel to this vertical axis (A).