KR20210066615A - Seperator and steam recirculation system including the same - Google Patents

Abstract

An object of the present invention is to provide a steam separator capable of increasing the dryness of steam and removing condensed water without separate power when the dryness of steam in a main steam pipe is low or condensed water is generated, and a steam recirculation system including the same. A centrifugal steam separator of the present invention includes: a hollow pipe, one end of which communicates with a main steam pipe, and which is extended to be rounded to form a flow path through which the steam introduced from the main steam pipe flows; a steam discharge pipe which is located at the other end of the hollow pipe, communicates with the hollow pipe so that the dry fluid separated from the steam is discharged, and is opened in one direction; and a drain pipe which is positioned adjacent to the steam discharge pipe, communicates with the hollow pipe to discharge the wet fluid separated from the steam, and is opened in a different direction from the steam discharge pipe, wherein the humidity of the dry fluid is lower than the humidity of the wet fluid.

Description

Separator and steam recirculation system including same

The present invention relates to a brackish water separator and a vapor recirculation system including the same, and more particularly, to a brackish water separator for increasing the dryness of steam supplied to a main steam pipe, and a vapor recirculation system including the same.

The main steam pipe is a steam pipe for drawing steam generated from the boiler and guiding it to the steam pipe header.

And the steam tube header refers to a cylindrical vessel in which the main steam pipe and the branch steam pipe are integrated into one place in order to rationally supply the steam from the boiler to the site of each steam consuming device.

At this time, when steam is supplied to the cooled main steam pipe, condensed water may be generated or the dryness of the steam may be lowered due to a phase change. However, such condensate or micro-droplets due to low dryness cause water shock.

Water shock is a phenomenon in which instantaneous pressure is generated when the movement of water or a moving object is suddenly stopped or its direction is changed. This has a problem that may cause continuous damage and wear of the turbine blades.

Therefore, it is necessary to separate and remove the moisture contained in the steam generated from the steam drum of the water tube boiler, return it to the water chamber, and supply only the steam to the superheater.

Accordingly, a brackish water separator is used, which is a device that separates and removes moisture from steam containing moisture.

More specifically, for the steam separator, devices such as a barrier plate, a wire mesh, a cyclone, and a centrifugal separator are used to block the moisture contained in the steam flowing into the tube in a boiler, etc. in the field of power generation process.

However, such a conventional brackish water separator uses the principle of draining the condensed water or microdroplets generated using gravity. In this case, since the flow rate of the supplied steam is quite high, the generated condensate or micro-droplets are more affected by inertial force than gravity. Therefore, it is practically difficult to drain the condensate or fine droplets to the lower part of the pipe.

It is an object of the present invention to provide a steam recirculation system including a brackish water separator having a structure capable of solving the above-described problems and the same.

First, when the dryness of the steam of the main steam pipe is lowered or condensate occurs, it is intended to provide a steam recirculation system including a steam recirculation system including the same and a mechanical structure to increase the dryness of the steam without a separate power and remove the condensate. do.

In addition, when the condensed water is separated through the brackish water separator, the separated condensate is circulated back to the brackish water separator of a different structure to further increase the dryness of the steam and to additionally remove wet steam. And a steam recirculation system including the same. is intended for work.

In addition, when the vapor is separated by circulating twice through the brackish water separator, the dried vapor is returned to the main steam pipe and reused, thereby providing a brackish separator capable of minimizing flow loss and a vapor recirculation system including the same. The purpose.

In order to achieve such an object of the present invention, the centrifugal radix separator according to an embodiment of the present invention has one end communicating with the main steam pipe, and is formed to extend roundly so that the steam introduced from the main steam pipe flows. a hollow tube forming a flow path; and a steam discharge pipe located at the other end of the hollow pipe, communicating with the hollow pipe so that the dry fluid separated from the steam is discharged, and formed open in one direction, wherein the hollow pipe is to the steam discharge pipe and a drain pipe positioned adjacently, communicating with the hollow pipe to discharge the wetting fluid separated from the steam, and opening in a different direction from the steam discharge pipe, wherein the humidity of the drying fluid is lower than the humidity of the wetting fluid .

According to an example related to the present invention, the hollow tube forms a path through which the steam flows, and is formed in a circular shape to be wound once.

According to another example related to the present invention, the hollow tube forms a path through which the steam flows, and is formed in the form of a closoid curve to be wound once.

According to another example related to the present invention, the hollow tube forms a path through which the steam flows, and is spirally wound around a plurality of turns.

According to another example related to the present invention, the drain pipe is formed to extend in a different direction from the steam discharge pipe.

According to another example related to the present invention, the drain pipe is formed to branch and extend in a tangential direction opposite to the inlet pipe from the lower side of the hollow pipe.

In addition, the cylindrical radix separator according to another embodiment of the present invention in order to realize the above object, a cylinder in which a space in which steam flows is formed; an inlet opening formed on one side of the cylinder so that the steam is introduced into the space; and a steam outlet passing through one surface in the axial direction of the cylinder and communicating with the space through which the drying fluid separated from the steam flows, and is positioned adjacent to the inlet on the one side of the cylinder, the space and and a drain in communication therewith through which a wetting fluid separated from the vapor flows, wherein the humidity of the drying fluid is lower than that of the wetting fluid.

According to an example related to the present invention, on the other surface of the cylinder in the axial direction, it includes a guide part protruding toward the one surface.

According to another example related to the present invention, the drain port is formed to extend from one side of the cylinder in a direction different from the inlet port, and is formed to be curved.

According to another example related to the present invention, the inlet is formed to extend outwardly from one side of the cylinder so that the steam is introduced into the space.

In addition, in order to realize the above object, a composite type radix separator according to another embodiment of the present invention includes a centrifugal type radix separator; and a cylindrical radix separator in communication with the centrifugal radix separator, wherein one end of the centrifugal radix separator communicates with the main steam pipe, and is formed to extend roundly to form a flow path through which the steam introduced from the main steam pipe flows hollow tube forming; and a steam discharge pipe positioned at the other end of the hollow pipe, communicating with the hollow pipe so that the first drying fluid separated from the steam is discharged, and formed open in one direction, wherein the hollow pipe includes the steam It is located adjacent to the discharge pipe, and communicates with the hollow pipe so that the first wet fluid separated from the steam is discharged, and includes a drain pipe that is opened in a different direction from the steam discharge pipe, wherein the cylindrical radix separator has a steam inside a cylinder in which a space is formed to flow; an inlet opening formed at one side of the cylinder so that the first wetting fluid flows into the space; and a steam outlet passing through one surface in the axial direction of the cylinder and communicating with the space through which a second drying fluid separated from the steam flows, and is positioned adjacent to the inlet at the one side of the cylinder, the and a drain port in communication with the space through which a second wetting fluid separated from the vapor flows, the drain pipe and the inlet are coupled to communicate, and the humidity of the first drying fluid is lower than that of the first wetting fluid, The humidity of the second drying fluid is lower than the humidity of the second wetting fluid.

According to an example related to the present invention, the hollow tube forms a path through which the steam flows, and is formed in a circular shape to be wound once.

According to another example related to the present invention, the hollow tube forms a path through which the steam flows, and is formed in the form of a closoid curve to be wound once.

According to another example related to the present invention, the hollow tube forms a path through which the steam flows, and is spirally wound around a plurality of turns.

According to another example related to the present invention, the other surface of the cylinder in the axial direction includes a guide portion protruding toward the one surface.

According to another example related to the present invention, the drain port is formed to extend from one side of the cylinder in a direction different from the inlet port, and is formed to be curved.

In addition, in order to realize the above object, the steam recirculation system including the separator and the same according to another embodiment of the present invention, the main steam pipe; It communicates with the main steam pipe, is made to receive steam from the main steam pipe, the composite type radix separator according to claim 11; and a turbine connected to the steam discharge pipe of the composite type brackish water separator, into which the dry fluid discharged from the steam discharge pipe flows, and is in communication with the main steam pipe from the steam outlet of the composite type steam discharge pipe, the composite type The dry fluid discharged from the steam outlet of the brackish water separator returns to the main steam line.

According to the present invention, the following effects can be achieved.

First, since the hollow tube of the centrifugal type water separator has a wound shape, the steam introduced from the main steam tube rotates along the hollow tube, thereby draining the separated condensate or wet steam to the drain pipe.

Therefore, it is possible to easily separate the condensate and increase the dryness of the steam by separating the steam only by the mechanical structure of the hollow tube of the centrifugal steam separator without the need to install a separate power or additional device. Due to this, it is possible to prevent damage to the turbine blades when the separated steam is transmitted to the turbine.

In addition, the drain pipe of the centrifugal separator and the inlet of the cylindrical separator are coupled to communicate so that the steam is circulated twice.

Therefore, when the condensed water is separated through the centrifugal brackish water separator, the separated condensed water is circulated back to the cylindrical brackish water separator to further remove wet steam and further increase the dryness of the steam.

In addition, in the case of a combined type brackish separator in which a centrifugal separator and a cylindrical separator are combined, the steam outlet communicates with the main steam pipe. The dry fluid discharged from the steam outlet of the combined brackish water separator is returned to the main steam line.

Therefore, when the steam is separated by circulating it twice through the steam separator, the dried steam can be returned to the main steam pipe and reused. Accordingly, flow loss can be minimized.

1 is a perspective view of a centrifugal radix separator according to an embodiment of the present invention.
Figure 2 is a front view of the centrifugal radix separator of Figure 1;
Figure 3 is a rear view of the centrifugal radix separator of Figure 1;
Figure 4 is a side view of the centrifugal radix separator of Figure 1;
5 is a perspective view of a centrifugal radix separator according to another modified example of FIG. 1 .
Figure 6 is a rear view of the centrifugal radix separator of Figure 5;
7 is a side view of a centrifugal radix separator according to another modified example of FIG. 1 .
8 is a perspective view of a cylindrical radix separator according to another embodiment of the present invention.
9 is a perspective view showing the cylindrical radix separator of FIG. 8 from another angle.
10 is a perspective view of a cylindrical radix separator according to another modified example of FIG.
11 is a perspective view of a cylindrical radix separator according to another modified example of FIG. 8 .
Figure 12 is a perspective view showing the cylindrical radix separator of Figure 11 from another angle.
13 is a perspective view of a cylindrical radix separator according to another modified example of FIG. 8 .
14 is a perspective view showing the cylindrical radix separator of FIG. 13 from another angle;
15 is a perspective view of a composite type radix separator according to another embodiment of the present invention.
16 is an experimental example showing the volume fraction of steam flowing inside the centrifugal type brackish water separator of FIG. 1 .
Figure 17 is an experimental example showing the volume fraction of the steam flowing inside the cylindrical brackish water separator of Figure 11.
18 is an experimental example showing the volume fraction of steam flowing inside the cylindrical gas separator of FIG. 10 from different angles.
Figure 19 is an experimental example showing the water fraction flowing inside the cylindrical brackish water separator of Figure 10.
Figure 20 is an experimental example showing the water fraction flowing inside the cylindrical brackish water separator of Figure 11.
FIG. 21 is a view illustrating a process in which the steam of the main steam pipe is separated through the configuration of FIG. 15 in a steam recirculation system including a steam separator and the same, part is transferred to the turbine, and the other part is returned back to the main steam pipe.

Hereinafter, with reference to the accompanying drawings will be described in detail the steam recirculation system including the separator and the same according to an embodiment of the present invention.

In the present specification, the same and similar reference numerals are assigned to the same and similar components in different embodiments, and a redundant description thereof will be omitted.

In the following description, in order to clarify the characteristics of the present invention, descriptions of some components may be omitted.

Also, a structure applied to one embodiment may be equally applied to another embodiment as long as there is no structural or functional contradiction in the different embodiments.

The singular expression includes the plural expression unless the context clearly dictates otherwise.

The accompanying drawings are only for easy understanding of the embodiments disclosed in this specification, and the technical idea disclosed in this specification is not limited by the accompanying drawings, and all changes and equivalents included in the spirit and scope of the present invention It should be understood to include water or substitutes.

The terms “front side”, “back side”, “left”, “right”, “top” and “bottom” used in the following description will be understood with reference to the coordinate system shown in FIGS. 1, 8 and 15 . will be.

The term "main steam pipe" used in the following description means a steam pipe for delivering steam generated in a boiler to a heat engine. It includes a steam pipe for delivering steam to a brackish water separator to be described later.

The term "turbine" used in the following description collectively refers to a device that obtains rotational force by making a high-pressure fluid impinge on the blades. In a heat engine that converts thermal energy into mechanical energy, the mechanical energy may be based on rotational force.

As used in the following description, the term "separation of brackish water" refers to a process in which steam is separated into a dry fluid and a wet fluid, which will be described later, by a brackish water separator.

The term "dry fluid" used in the following description means a fluid having relatively high dryness when the fluid passes through a brackish water separator and undergoes a brackish water separation process.

The term "wet fluid" used in the following description refers to a fluid having relatively low dryness when the fluid has passed through a brackish water separator and undergoes a brackish water separation process.

Hereinafter, with reference to FIGS. 1 to 21 , a steam recirculation system 10 including the gas separator and the same according to an embodiment of the present invention will be described in detail.

1 is a perspective view of a centrifugal radix separator 100 according to an embodiment of the present invention, FIG. 2 is a front view of the centrifugal radix separator 100 of FIG. 1, and FIG. 3 is a centrifugal radix separator 100 of FIG. ) is a rear view, and FIG. 4 is a side view of the centrifugal radix separator 100 of FIG. 1 .

1 to 4 , the centrifugal radix water separator 100 according to the illustrated embodiment includes a hollow pipe 110 , a vapor discharge pipe 120 , and a drain pipe 130 .

The hollow tube 110 provides a path through which the steam 3 introduced into the centrifugal type water separator 100 from the main steam tube 1 flows.

One end of the hollow tube 110 communicates with the main steam tube 1 . This is to separate the steam (3) of the main steam pipe (1) using the illustrated embodiments.

The hollow tube 110 is formed to extend roundly. At this time, the hollow tube 110 may be formed in a circular shape to be wound one turn as shown.

The steam 3 introduced into the hollow tube 110 flows while being wound one round along the hollow tube 110 formed to be wound one round in a circle.

The hollow pipe 110 includes an inlet pipe 140 and a drain pipe 130 .

The inlet pipe 140 is formed at one end of the hollow pipe 110 , wherein the one end means the front side as shown in FIG. 1 . The steam 3 of the main steam pipe 1 is introduced into the hollow pipe 110 through the inlet pipe 140 .

The drain pipe 130 is located adjacent to the steam discharge pipe 120 to be described later and communicates with the hollow pipe 110 so that the wet fluid 5 separated from the steam 3 is drained. Therefore, since the hollow tube 110 is rotated and wound and then drained, it should not be positioned adjacent to the inlet tube 140 .

The drain pipe 130 is formed to extend in a direction different from that of the steam discharge pipe 120 . When formed extending in the same direction, the effect of separating the drying fluid 4 and the wetting fluid 5 from the steam 3 is reduced.

The direction in which the drain pipe 130 is extended may face a tangential direction opposite to the inlet pipe 140 at the lower side of the hollow pipe 110 adjacent to the steam discharge pipe 120 as shown. More specifically, in this case, the tangential direction to which the drain pipe 130 faces means the rear side.

Although not shown, the drain pipe 130 may be formed open rather than extended. At this time, the wet fluid 5 separated from the steam 3 introduced through the inlet pipe 140 is drained through the open drain pipe 130 .

The steam discharge pipe 120 is located at the other end of the hollow pipe 110, communicates with the hollow pipe 110 so that the drying fluid 4 separated from the steam 3 is discharged, and is opened in one direction.

At this time, with respect to one direction in which the opening is formed, the other end of the hollow tube 110 may be formed toward the upper side as shown in FIG. 1 .

According to the centrifugal type brackish water separator 100 shown in FIG. 1 , the steam 3 introduced into the inlet pipe 140 is introduced from the front side and passes through the hollow pipe 110 to the drying fluid 4 and the wet fluid 5 ), the wet fluid 5 is discharged to the rear side through the drain pipe 130 , and the drying fluid 4 is discharged to the upper side through the steam discharge pipe 120 .

5 is a perspective view of the centrifugal radix separator 100 according to another modified example of FIG. 1 , and FIG. 6 is a rear view of the centrifugal radix separator 100 of FIG. 5 .

5 to 6, the hollow tube 110 of the centrifugal radix separator 100 is spirally wound three turns.

The steam 3 introduced into the hollow tube 110 flows along a spiral path. The steam 3 flows while being wound three turns along the hollow tube 110 formed to be wound three turns. At this time, although not shown, the hollow tube 110 may be formed to be wound three or more turns. That is, it may be in the shape of the spiral hollow tube 110 that is formed to be wound N turns.

The drain pipe 130 moves along the path of the hollow pipe 110 and the steam 3 of the main steam pipe 1 introduced through the inlet pipe 140 rotates once, and the wet fluid 5 is separated from each other. In order to exit, each lower side of the hollow tube 110 may exist in a tangential direction opposite to the inlet tube 140 . More specifically, in this case, the tangential direction to which the drain pipe 130 faces means the rear side.

The drain pipe 130 is formed open in a different direction from the steam discharge pipe 120 . In addition, the drain pipe 130 may be formed to extend.

When the hollow tube 110 has a spiral structure that rotates N times, N-1 number of drain pipes 130 may be formed in the hollow tube 110 .

7 is a side view of a centrifugal radix separator according to another modified example of FIG. 1 .

Referring to FIG. 7 , the hollow tube 110 may be formed in the form of a clothoid curve to be wound once as shown. The clothoid curve is a kind of curve having the property that the curvature increases in proportion to the length of the curve. For example, the trajectory in which a roller coaster rotates once also corresponds to a clothoid curve.

The steam 3 introduced into the hollow tube 110 flows along the hollow tube 110 formed to be wound in the form of a closoid curve.

Although not shown, the shape in which the hollow tube 110 is wound may be formed in the form of a lemniscate curve in addition to a circular and clothoid curve. A lemniscate curve means a case in which the shape is an infinity symbol or an eight-character symbol.

8 is a perspective view of a cylindrical radix separator 200 according to another embodiment of the present invention, and FIG. 9 is a perspective view showing the cylindrical radix separator 200 of FIG. 8 from another angle.

Referring to FIGS. 8 and 9 , the cylindrical brackish water separator 200 includes a cylinder 210 , an inlet 240 , a vapor outlet 220 , and a drain 230 .

The cylinder 210 is formed with a space in which the steam 3 flows. Steam (3) flowing inside is introduced through the main steam pipe (1).

The inlet 240 is opened at one side of the cylinder 210 so that the steam is introduced into the inner space of the cylinder 210 . In this case, the one side means the circumferential surface of the front side.

The wet fluid 5 flowing in from the main steam pipe 1 or passing through the centrifugal radix separator 100 through the inlet 240 is introduced into the cylinder 210 .

The steam outlet 220 penetrates through one surface in the axial direction of the cylinder 210, thereby forming a flow path of the steam 3 inside the cylinder 210. And the steam outlet 220 communicates with the inner space of the cylinder 210 so that the drying fluid 4 separated from the steam 3 flows. In this case, the one surface in the axial direction means the outer surface of the right side in the illustrated embodiment.

The steam 3 introduced into the cylinder 210 rotates inside the cylinder 210 with the steam outlet 220 as an axis. Due to this, the centrifugal force acts on the steam (3), and the steam (3) is separated from each other.

The drain 230 is placed adjacent to the inlet 240 on one side of the cylinder 210 . The drain hole 230 is formed extending downward, and the wet fluid 5 communicated with the inner space of the cylinder 210 and separated from the steam 3 is drained from the cylinder 210 through the drain hole 230 .

10 is a perspective view of a cylindrical radix separator 200 according to another modified example of FIG.

Referring to FIG. 10 , in the cylindrical radix separator 200 according to the illustrated embodiment, the inlet 240 may be formed to extend outward. In this case, the outward direction refers to a direction toward the front side with respect to one side of the cylinder 210 , and the one side refers to a circumferential surface of the cylinder 210 on the front side.

The drain hole 230 of the cylindrical radix separator 200 according to the illustrated embodiment may be formed to extend and may be formed to be curved. Thus, it is possible to add more centrifugal force to the steam 3 , and thus the humidity of the wetting fluid 5 can be further increased.

The drain hole 230 may be curved twice, and the drain hole 230 extended in the first curve is bent toward the right, and then is bent again toward the front side in the same direction as the inlet 240 . .

11 is a perspective view of a cylindrical radix separator 200 according to another modified example of FIG. 8 , FIG. 12 is a perspective view showing the cylindrical radix separator 200 of FIG. 11 from another angle, and FIG. 13 is another view of FIG. It is a perspective view of the cylindrical radix separator 200 according to another modified example, and FIG. 14 is a perspective view showing the cylindrical radix separator 200 of FIG. 13 from another angle.

11 and 14 , the cylinder 210 includes a guide part 250 .

The guide part 250 is formed to protrude toward one surface on the other surface in the axial direction of the cylinder 210 . The other surface in the axial direction refers to an inner surface formed on the left side of the cylinder 210 according to the coordinate system shown in FIG. 8 , and one surface refers to an inner surface formed on the right side of the cylinder 210 .

The shape of the protruding guide part 250 may be a hemispherical shape as shown, but is not necessarily limited thereto.

The outer surface of the other surface in the axial direction of the cylinder 210 may be partially recessed to correspond to the surface shape of the guide part 250 .

The guide part 250 is formed on the other surface in the axial direction of the cylinder 210 , wherein the inlet 240 is adjacent to one surface in the axial direction of the cylinder 210 , and the drain port 230 is in the axial direction of the cylinder 210 . adjacent to the other side of

The drain hole 230 is attracted to one side of the cylinder 210 and adjacent to the inlet 240 . At this time, the drain hole 230 extends downward from one side of the cylinder 210 and is formed to be curved.

As shown in the illustrated embodiment, the drain hole 230 may be curved twice, and the drain hole 230 extended in the first curve is bent toward the right, and then the front side in the same direction as the inlet 240 . is bent again towards

As shown in the illustrated embodiment, the inlet 240 may be formed to extend toward the outside of the cylinder 210 . In this case, the outward direction refers to a direction toward the front side with respect to one side of the cylinder 210 , and the one side refers to a circumferential surface of the cylinder 210 on the front side.

15 is a perspective view of a composite type radix separator 300 according to another embodiment of the present invention.

Referring to FIG. 15 , the composite type radix separator 300 is formed by combining the above-described centrifugal type radix separator 100 and the cylindrical radix separator 200 . Specifically, the drain pipe 130 of the centrifugal radix separator 100 and the inlet 240 of the cylindrical radix separator 200 are coupled and communicated.

The first wetting fluid 131 discharged from the centrifugal type water separator 100 is introduced into the cylindrical type water separator 200 . Specifically, the steam 3 introduced into the centrifugal type water separator 100 circulates through the hollow tube 110 and is separated into a first drying fluid 121 and a first wetting fluid 131, and the first drying fluid is steam It is discharged to the discharge pipe 120 and the first wetting fluid 131 is discharged to the drain pipe 130 .

The first wetting fluid 131 separated from the steam 3 is introduced into the cylinder 210 through the inlet 240 of the cylindrical brackish water separator 200 coupled to the drain pipe.

The first wetting fluid 131 is rotated in the cylinder with the steam outlet 220 as an axis to separate the brackish water, and the second drying fluid 221 is discharged to the steam outlet 22, and the second wetting fluid 231 is the drain port. (230) is drained.

In this case, the first drying fluid 121 has a higher dryness than the first wetting fluid 131 , and the second drying fluid 221 has a higher dryness than the second wetting fluid 231 .

The process in which the steam 3 introduced into the centrifugal radix separator 100 from the main steam pipe 1 is circulated and separated in the centrifugal radix separator 100 is circulated and separated in the centrifugal brackish separator 100 described above. same as

Similarly, the process of circulating and separating the first wet fluid 131 introduced into the cylindrical brackish water separator 200 in the cylindrical brackish water separator 200 is also the same as the process of circulating and separating in the cylindrical brackish water separator 200 described above.

Therefore, the overlapping description below will be omitted.

And although there is no bar shown in FIG. 15 , the hollow tube 110 of the composite type radix separator 300 may change the shape of the hollow tube 110 as in the case of the centrifugal type radix separator 100 . For example, it can be transformed into a spiral-shaped curve or a clothoid curve. Description of the modified form of the hollow tube 110 of the composite type radix separator 300 is the same as the description in the centrifugal type water separator 100 described above.

Although not shown in FIG. 15 , the shape of the guide part 250 protruding toward the right while positioned on the left side of the cylinder 210 of the composite type radix separator 300 is not limited to a hemispherical shape. For example, it may be formed in the form of a hexahedron or a quadrangular pyramid.

The description of the structure of the drain hole 230 in relation to the draining of the second wetting fluid 231 from the drain hole 230 of the composite type brackish water separator 300 is described above with the drain hole 230 of the cylindrical separator 200 and same. Therefore, the overlapping description below will be omitted.

FIG. 21 is a steam separator and a steam recirculation system 10 including the same. Through the configuration of FIG. 15, the steam of the main steam pipe is separated and part is transmitted to the turbine, and the other part is a view showing a process of returning back to the main steam pipe to be.

Referring to FIG. 21 , the steam recirculation system 10 including the brackish separator and the same in the illustrated embodiment includes a main steam pipe 1 , a combined brackish separator 300 , and a turbine 2 .

Steam generated from the main steam pipe (3) is introduced into the combined type brackish water separator (300). Specifically, it is introduced into the inlet pipe 140 of the complex type brackish water separator 300 .

The steam (3) introduced into the combined-type brackish water separator 300 is separated by brackish water by circulating the combined-type brackish water separator 300 twice. At this time, the first drying fluid 121 separated from the brackish water through the first circulation is discharged through the steam discharge pipe 120 and supplied to the turbine 2 .

And the second drying fluid 221 separated by the second circulation is discharged through the steam outlet 220 in communication with the main steam pipe (1) and returns to the main steam pipe (1).

Since the descriptions of the first drying fluid 121 and the second drying fluid 221 are the same as those described above, a description thereof will be omitted below.

Condensate and fine droplets that can cause fatigue in the turbine 2 when the main steam pipe 10 is driven for a long period of time by using the hybrid type separator 300 that connects the centrifugal type separator 100 and the cylindrical steam separator 200 It is effectively removed by circulating it twice, and the second wetting fluid 231 corresponding to the condensed water is discharged.

Also, the second drying fluid 221 is returned to the main steam pipe 1 to minimize flow rate loss.

16 is an experimental example illustrating the volume fraction of steam flowing inside the centrifugal type brackish water separator of FIG. 1 .

16, the numerical analysis area of the centrifugal radix separator 100 was created with 724426 tetrahedral grids, the characteristic length of the smallest grid was set to 20 mm, and the main steam pipe of a nuclear power plant (1) In order to perform numerical analysis in the same environment as shown in Fig. 2, the outlet pressure condition of 7 MPa, the inlet velocity condition of 20 m/s, the inlet diameter of 550 mm, and the dryness of steam flowing from the main steam pipe were set to 99%.

As a result of the volume fraction analysis of the centrifugal type brackish water separator 100, it was confirmed that pure steam close to 100% dryness was discharged from the 30% area of the steam discharge pipe 120. And it was possible to check the high-humidity vapor droplets near the drain pipe 130 , and it was confirmed that the high-humidity steam was discharged through the drain pipe 130 .

Since the steam 3 flowing into the centrifugal water separator 100 has a very high speed, the effect of gravity is small and the effect of centrifugal force is large. Therefore, even without electronic equipment, if the steam 3 flows at a high speed, due to the structure of the hollow tube 100 and the drain pipe 130 of the centrifugal type water separator 100, it is possible to effectively drain the condensed water from the steam 3 It works.

17 is an experimental example showing the volume fraction of steam flowing inside the cylindrical gas separator of FIG. 11, and FIG. 18 is an experimental example showing the volume fraction of steam flowing inside the cylindrical gas separator of FIG. 10 at different angles. .

17 and 18, the numerical analysis area of the cylindrical radix separator 200 was created with 433545 tetrahedral grids, and the characteristic length of the smallest grid was set to 20 mm, and the main steam pipe of the nuclear power plant ( For numerical analysis in the same environment as 1), the condition of the outlet pressure of 7 MPa, the inlet velocity of 20 m/s, and the dryness of the steam flowing from the main steam pipe were set to 99%.

Referring to FIG. 17 , as a result of the volume fraction analysis of the cylindrical brackish water separator 200, it was confirmed that it was separated into steam with a dryness of 90% or less on the inner wall side of the cylinder 210, and at the steam outlet 220, 100 in most cross sections It was confirmed that steam with a dryness close to % was discharged.

Referring to FIG. 18 , high-humidity steam can be confirmed near the drain 230 , and it can be confirmed that high-humidity steam is discharged through the drain 230 .

That is, the cylindrical water separator 200 can effectively remove condensate and fine droplets that can cause fatigue of the turbine 2 when the main steam pipe 1 is driven by utilizing the characteristic that the flow rate of steam is high without electronic equipment. can be found through the experimental results.

19 is an experimental example showing the water fraction flowing inside the cylindrical brackish water separator 200 of FIG. 10, and FIG. 20 is an experimental example showing the water fraction flowing inside the cylindrical brackish water separator 200 of FIG. 11 .

19 shows the surface liquid volume fraction in the case where the guide part 250 is not present in the cylindrical radix water separator 200, and FIG. 20 is a view showing the surface liquid volume fraction in the case where the guide part 250 is present.

19 and 20, in the case of the cylindrical radix separator 200 without the guide part 250, the amount of condensed water or fine droplets drained to the drain 230 is rare, but the cylindrical radix with the guide part 250 In the case of the separator 200, it can be seen that the liquid volume fraction of the portion where the guide part 250, the cylinder 210, and the drain hole 230 are connected is high. In addition, it is possible to check the condensed water and fine droplets to be drained from the drain 230 of the cylindrical water separator 200 having the guide unit 250 .

Therefore, when the cylindrical radix separator 200 includes the guide part 250, it can be experimentally confirmed that the steam introduced into the cylinder 210 is more clearly radix separated.

Although described above with reference to the preferred embodiment of the present invention, those of ordinary skill in the art can variously modify and change the present invention within the scope without departing from the spirit and scope of the present invention described in the claims below. You will understand that you can.

1: Main steam line 2: Turbine
3: Steam 4: Drying fluid
5: Wetting fluid
10: brackish water separator and steam recirculation system comprising same
100: centrifugal brackish separator 110: hollow tube
120: vapor discharge pipe 121: first drying fluid
130: drain pipe 131: first wetting fluid
140: inlet pipe 200: cylindrical water separator
210: cylinder 220: steam outlet
221: second drying fluid 230: drain hole
231: second wetting fluid 240: inlet
250: guide unit 300: complex type water separator

Claims (17)

a hollow pipe having one end communicating with the main steam pipe and extending to be round to form a flow path through which the steam introduced from the main steam pipe flows; and
It is located at the other end of the hollow tube, and communicates with the hollow tube so that the dry fluid separated from the steam is discharged, and includes a steam discharge tube that is formed open in one direction,
The hollow tube,
It is located adjacent to the steam discharge pipe, communicates with the hollow pipe so that the wet fluid separated from the steam is discharged, and includes a drain pipe that is opened in a different direction from the steam discharge pipe,
The humidity of the drying fluid is lower than the humidity of the wetting fluid,
centrifugal water separator. According to claim 1,
The hollow tube forms a path through which the steam flows, characterized in that it is formed in a circular shape to be wound once,
centrifugal water separator. According to claim 1,
The hollow tube forms a path through which the steam flows, characterized in that it is formed in the form of a closoid curve to be wound once,
centrifugal water separator. According to claim 1,
The hollow tube forms a path through which the steam flows, characterized in that it is formed in a spiral shape to be wound a plurality of turns,
centrifugal water separator. 5. The method according to any one of claims 2 to 4,
The drain pipe is characterized in that it is formed extending in a different direction from the steam discharge pipe,
centrifugal water separator. 6. The method of claim 5,
The drain pipe is characterized in that it is branched and extended in a tangential direction opposite to the inlet pipe from the lower side of the hollow pipe,
centrifugal water separator. A cylinder in which a space is formed through which steam flows;
an inlet opening formed on one side of the cylinder so that the steam is introduced into the space; and
and a steam outlet passing through one surface in the axial direction of the cylinder and communicating with the space through which the dry fluid separated from the steam flows,
It is positioned adjacent to the inlet on the one side of the cylinder, and includes a drain in communication with the space through which the wet fluid separated from the steam flows,
the humidity of the drying fluid is lower than the humidity of the wetting fluid;
Cylindrical Radix Separator. 8. The method of claim 7,
On the other surface of the cylinder in the axial direction, including a guide portion protruding toward the one surface,
Cylindrical Radix Separator. 8. The method of claim 7,
The drain port is formed to extend from one side of the cylinder in a direction different from the inlet port, characterized in that it is formed to be curved,
Cylindrical Radix Separator. 8. The method of claim 7,
The inlet, characterized in that formed extending outward from one side of the cylinder so that the steam flows into the space,
Cylindrical Radix Separator. centrifugal brackish separator; and
and a cylindrical radix separator in communication with the centrifugal radix separator,
The centrifugal radix separator,
a hollow pipe having one end communicating with the main steam pipe and extending to be round to form a flow path through which the steam introduced from the main steam pipe flows; and
It is located at the other end of the hollow tube, and communicates with the hollow tube so that the first drying fluid separated from the steam is discharged, and includes a steam discharge tube that is opened in one direction,
The hollow tube,
It is located adjacent to the steam discharge pipe, communicates with the hollow pipe so that the first wet fluid separated from the steam is discharged, and includes a drain pipe that is opened in a different direction from the steam discharge pipe,
The cylindrical radix separator,
A cylinder in which a space is formed through which steam flows;
an inlet opening formed at one side of the cylinder so that the first wetting fluid flows into the space; and
and a steam outlet passing through one surface of the cylinder in the axial direction and communicating with the space through which a second drying fluid separated from the steam flows,
and a drain port positioned adjacent to the inlet on the one side of the cylinder and communicating with the space through which a second wetting fluid separated from the steam flows,
The drain pipe and the inlet are coupled to communicate,
the humidity of the first drying fluid is lower than the humidity of the first wetting fluid,
the humidity of the second drying fluid is lower than the humidity of the second wetting fluid;
Combined Radix Separator. 12. The method of claim 11,
The hollow tube forms a path through which the steam flows, characterized in that it is formed in a circular shape to be wound once,
Combined Radix Separator. 12. The method of claim 11,
The hollow tube forms a path through which the steam flows, characterized in that it is formed in the form of a closoid curve to be wound once,
Combined Radix Separator. 12. The method of claim 11,
The hollow tube forms a path through which the steam flows, characterized in that it is formed in a spiral shape to be wound a plurality of turns,
Combined Radix Separator. 15. The method according to any one of claims 12 to 14,
On the other surface of the cylinder in the axial direction, including a guide portion protruding toward the one surface,
Combined Radix Separator. 15. The method according to any one of claims 12 to 14,
The drain port is formed to extend from one side of the cylinder in a direction different from the inlet port, characterized in that it is formed to be curved,
Combined Radix Separator. main steam pipe;
It communicates with the main steam pipe, is made to receive steam from the main steam pipe, the composite type radix separator according to claim 11; and
and a turbine connected to the steam discharge pipe of the complex type water separator and into which the dry fluid discharged from the steam discharge pipe flows;
The steam recirculation system communicates with the main steam pipe from the steam outlet of the combined-type brackish water separator so that the dry fluid discharged from the steam outlet of the combined-type brackish water separator returns to the main steam pipe.

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