FR2620951A1 - SEPARATOR OF VAPOR-LIQUID MIXTURES - Google Patents

Abstract

The invention relates to a separator for vapor-liquid mixtures. According to the invention, it comprises a collector 1 placed in communication with an inlet collector and an outlet collector, between which are mounted superimposed separation elements 4 provided with overflow channels 5. In the collector 1 are provided 6 main partitions forming 7 main conduits for the passage of the liquid. Each main duct 7 is placed in communication with the corresponding overflow channel 5. In the manifold 1, additional partitions 9 are also provided, each of which forms, together with the corresponding main partition 6, an additional duct 10. The additional partitions 9 are arranged, along the length of the collector 1, at a distance from the corresponding overflow channel 5. The invention applies in particular to thermal installations.

Description

the present invention relates to vapor separation devices,

and more especially it aims

  separators of vapor-liquid mixtures.

  The invention can be implemented with the maximum efficiency in thermal installations, in particular in nuclear power plants, in an intermediate separation system, in a system for overheating the steam of a turbine running at the same time.

  humid or slightly overheated steam.

  The invention can be used in the oil and gas industries and in any other branch of production where it is necessary to separate binary mixtures. A vapor-liquid mixture separator (SU, A, 898210) is known, comprising a collector connected to an inlet collector and an outlet collector, between which superimposed separating elements are arranged, provided with pouring in communication with said collector. Such a design of the separator has the effect of an irregular discharge of the liquid from the stages formed by the separating elements because of an intense displacement of the vapor by the collector from one stage to another, which compromises

the effectiveness of the separation.

  Also known is a separator of vapor-liquid mixtures (SU, A, 1060880) comprising a collector connected to an inlet collector and an outlet collector, between which superimposed separating elements, provided with overflow channels, are mounted. said manifold being equipped with partitions forming conduits through which the liquid flows and each of which is placed in communication with the corresponding overlying funnel. Such a design of the separator has the effect of an irregular discharge of the liquid from the stages formed by the separating elements because of the different lengths of the conduits for the passage of the liquid and the steam, which compromises the efficiency of the separation. In addition, the large length of the partitions causes congestion of the collector, requires more metal for the manufacture of the

  separator and complicates the process of its manufacture.

  The invention proposes to provide a separator liquid vapor mixtures, ensuring, through a modification of the design of the collector, a regular discharge of the liquid from the floors

  formed by the separating elements.

  The problem thus posed is solved with a vapor-liquid separator separator, comprising a collector connected to an inlet manifold and an outlet manifold, between which superposed separating elements provided with overflow channels are mounted, the collector being moreover provided with main bulkheads forming main conduits for the passage of the liquid, each of which is in communication with the corresonding overflow channel, said separator being equipped, in accordance with the invention, with additional partitions each of which forms, together with the corresponding main partition; a duct constituting an extension of the corresponding main duct and reversing the direction of movement of the liquid, while the additional partitions are arranged, according to the length of the collector, at a certain distance from the

corresponding overflow channel.

  It is advantageous to give a convex configuration to the main partition disposed in the area of the overflow channel and to provide an additional width of the partition smaller than that of the convex portion

of the main partition.

  Such a design of the collector, where additional partitions are provided each forming, together with the corresponding main partition, an additional duct which constitutes the extension of the corresponding main duct, ensures an evacuation

  regular liquid from the separation stages.

  This avoids the entry of steam from one main duct into another main duct, hence increasing the effectiveness of the separation. In addition, it is possible to reduce the amount of metal required for the manufacture of the separator and to simplify the

process of its manufacture.

  Other features and advantages of the invention will be better understood when reading the

  description which follows of an example of realization and

  Referring to the accompanying drawings, in which: - Figure 1 shows schematically a longitudinal section of a separator of vapor-liquid mixtures according to the invention - Figure 2 is a section along the line I-II of Figure 1; FIG. 3 is a section along the line

III-III of Figure 1.

  The vapor-liquid mixture separator comprises a collector 1 (FIG. 1) placed in communication with an inlet manifold 2 and an outlet manifold 3 (FIG. 2), between which superimposed separation elements 4 are mounted (FIG. 1). 5. In the collector 1 are provided main partitions 6 forming main ducts 7 for the flow of the liquid, each of which is in communication with a corresponding overflow channel 5

through holes 8.

  In the collector 1 are also arranged additional partitions 9 forming, together with the main partition 6 corresponding, a conduit which is the extension of the main conduit 7 corresponding and reverses the direction of movement of the liquid. The additional partitions 9 are arranged, along the length of the collector 1, at a distance from the corresponding overflow channel 5. In the vapor-liquid mixture separator, the main partition 6, disposed in the area of the overflow channel 5, is convex, while the width of the additional partition 9 is smaller than that of the convex portion of the main partition 6. Providing, in the collector 1, additional partitions 9 forming, together with the main partition 6, the additional conduit 10 which is the extension of the corresponding main conduit 7 and reverses the direction of movement of the liquid, provides the separation of with the steam of the stages formed by the separating elements, whereby a regular evacuation of the liquid from the stages is obtained

  formed by the separating elements.

  The separator of vapor-liquid mixtures

works in the following way.

  A wet steam from a source, for example a high pressure cylinder of a turbine (not shown in the drawing), arrives in the inlet manifold 2 (Figures 2, 3) where it is distributed between separation elements 4. In the latter, the liquid is separated from the vapor and arrives in the overflow channels 5 (Figure 1). Coming from the overflow channels 5, the liquid arrives, through the holes 8, into the corresponding main ducts 7, then into the corresponding additional ducts 10, and finally

  in the collector 1, where it is removed from the separator.

  By reversing the direction of flow of the liquid leaving the main duct 7 and the additional duct 9, a hydraulic lock is formed which prevents the passage of the steam from the overflow channel 5 to the collector 1. The dried steam in the 4 separation elements arrives in the outlet manifold 3 (Figures 2, 3). The dry steam leaving the manifold 3 is sent to the user, for example in the low pressure cylinders of a tubine (not shown in the drawing). In the vapor-liquid mixture separator, the width of the additional partition 9 (FIG. 1) is smaller than that of the convex portion of the main partition 6. As a result, the liquid flowing from the stages formed by the separation elements 4 and located above does not enter the hydraulic lock, which ensures safe operation of the latter. In the vapor-liquid mixture separator, a stage formed by the separating elements 4 has no hydraulic lock for the liquid discharge, since the other stages of the separation elements 4 are separated, according to the vapor,

  from manifold 1 by hydraulic locks.

  The implementation of the separator of the invention makes it possible to ensure regular evacuation of the liquid from the stages formed by the separating elements and, thereby, to improve the quality of the separation of the vapor, the separator object of the invention is also less bulky and requiring less metal for its manufacture than the known separators. Moreover, in the variant of execution which has just been exposed, the

  separator lends itself more easily to manufacture.

Claims (2)

R E V E N D I C A T I 0 N S   1. Separator of vapor-liquid mixtures, of the type comprising a manifold placed in communication with an inlet manifold and an outlet manifold, between which are mounted superimposed separation elements provided with overflow channels, the collector being moreover equipped with main bulkheads forming main conduits for the passage of the liquid, in communication with the corresponding overflow channel, characterized in that in the collector (1) there are provided additional partitions (9) each of which forms, together with the main partition (6 ), an additional duct (10) which constitutes an extension of the main duct (7) corresponding and reverses the direction of flow of the liquid, while the additional partitions (9) are arranged, according to the length of the collector (1), to a   distance from the corresponding overflow channel (5).   Separator for vapor-liquid mixtures according to claim 1, characterized in that the main partition (6) disposed in the region of the overflow channel (5) is convex, while the width of the additional partition (9) is smaller than to that of the   convex portion of the main partition (6).