JPS60190214A - Moisture separation apparatus - Google Patents

Abstract

PURPOSE:To obtain stable wet separation capacity, in a moisture separation apparatus, by forming zigzag passages by opposedly arranging saw-tooth shaped bent plates along the line direction of plural lines of liquid separation orifices placed on a plate surface at constant intervals. CONSTITUTION:Each of vanes 1 forming zigzag fluid passages 2 consists of two saw-tooth shaped bent plates and a partition plate and liquid separation orifices are provided to each bent plate at constant intervals in plural lines. This vane 1 is easy to prepare and is not damaged by fluid vibration. When gas flows through the zigzag passages, it is impinged to oblique surfaces of the vanes 1 and inertia speed difference is generated between liquid particles and the gas streams and liquid droplets are separated from the liquid separation orifices to be discharged as drain.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a moisture separator, and particularly to a moisture separator that removes liquid particles contained in the gas by passing gas through a zigzag fluid passage. Regarding equipment.

(Technical Background of the Invention and Problems Thereof) A moisture separator that generally has a zigzag fluid passage includes, for example, a steam dryer used in a boiling water nuclear reactor. This type of moisture separator usually consists of a number of vanes forming a zigzag fluid passageway, and is designed to remove liquid particles from outside the fluid passageway by creating an inertial velocity difference between the gas flow and the liquid particles. It is structured as follows.

Figure 1 shows the configuration of a conventional moisture separator.
is a vane that forms a zigzag fluid passage 2. As shown in FIG. 2, this vane 1 consists of a plate material 3 with a cross-sectional shape in which a number of trapezoids are connected, and a groove 5 for liquid separation in the peak part of this plate material 3.
The plate material 4 is fixed to the slope of the plate material 3 by a method such as welding. Each vane 1 is attached between cylindrical smoothers 6, 6 to maintain the vanes at a constant distance, and a fastening rod 7 passing through the spacer 6 maintains a constant distance Ii! ! They are placed opposite each other. Further, these vanes 1 are firmly assembled via a press plate 9 by means of nuts 1-8 which are screwed into threaded portions at both ends of the fastening rod 7.

When gas such as steam is passed through the plurality of fluid passages 2 formed in this way, the gas passing through each fluid passage 2 will collide with the slope of the vane 1 every time it changes direction. Therefore, an inertial velocity difference occurs between the liquid particles contained in the gas and the gas flow, and as a result, the liquid particles enter the liquid separation groove 5 installed at the peak of the vane 1 and are separated from the gas. be done.

By the way, in order for such a moisture separation device to have stable moisture separation performance, it is necessary that the intervals between the fluid passages 2 be equal intervals within the same passage. The separation device includes a plate member 3 having a cross-sectional shape in which a vane 1 forming a zigzag fluid passage 2 connects a large number of trapezoids;
Since the vane 1 is formed of a plurality of plate members 4 fixed to the slope of the plate member 3 by welding or the like, the height of the peaks of the vane 1 varies, making it difficult to maintain the intervals between the fluid passages 2 at equal intervals. In addition, as described above, the conventional vane 1 is formed by attaching a plurality of plates 4 to the slope of the plate 3 by a method such as welding, so it takes time and effort to manufacture the vane.Moreover, the bending rigidity is weak, and the gas In the flow, the vanes could be damaged by exciting fluid vibrations.

[Purpose of the invention]

The present invention has been made based on the above-mentioned circumstances, and its purpose is to provide a moisture separation system that is easy to manufacture, does not damage the vanes due to fluid vibration, and can provide stable moisture separation performance. The purpose of the present invention is to provide a separation device.

[Summary of the invention]

In order to achieve the above object, the present invention is characterized by having the following configuration. That is, the moisture separator according to the present invention has a bent plate having a plurality of rows of liquid separation holes formed at regular intervals on a plate surface and bent in a sawtooth shape along the direction of the rows of the holes. They are arranged facing each other to form a zigzag fluid passage.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 3 is a diagram showing an embodiment of the present invention, in which the same parts as in FIG. 1 are given the same reference numerals. In the same figure, the vane 1 forming the zigzag-shaped fluid passage 2 has two bent plates 11 and 12 bent in a sawtooth shape as shown in FIG.
It is formed by a partition plate 13 placed between these bent plates 11 and 12. The above IJ'1llil plates 11 and 1
As shown in FIG. 5, a plurality of rows of liquid separation holes 14 are provided on the plate surface of No. 2 at regular intervals. These liquid separation holes 14 are formed in an elliptical shape extending in the row direction of the holes.

J3, the bending plates 11 and 12 are bent in the direction of the rows of the liquid separation holes 14.

Further, the partition plate 13 is bent into a cross-sectional shape such that the distance between the bending plates 11 and 12 is constant. This partition plate 13 is fixed between the bent plates 11 and 12 by a welding method, and a plurality of drain chambers 15 are formed between the bent plates 11 and 12. This drain chamber 15 communicates with the liquid separation hole 14, and is configured to discharge liquid particles separated from the gas by the liquid separation hole 14 as drain.

Next, the manufacturing procedure of the vane 1 is shown in Figs. 6(a) to (C).
Explain with reference to. First, as shown in FIG. 6(a), a rectangular plate 21 of the required size is cut out, and a plurality of rows of liquid separation holes 14 are formed on the plate surface of this rectangular plate 21 at regular intervals as shown in FIG. 6(b). Then punch. Then, the rectangular plate 21 is bent along the row direction of the liquid separation holes 14 as shown in FIG. 12 is formed. Next, the bending plates 11 and 12 formed in this manner are opposed to each other so that the positions of the liquid separation holes 14 are shifted, and the partition plate 13 is fixed between them to form the vane 1.

The zigzag-shaped fluid passages 2 formed by the vanes 1 manufactured in this way have the same height of the peaks of each vane 1, so the intervals between the fluid passages 2 can be made equal. . Therefore, in this embodiment, stable moisture separation performance can be obtained. In addition, according to this embodiment, the vane 1 has a sandwich structure in which the bends 1' and 12 and the partition plate 13 are superimposed, so that fluid vibrations are difficult to occur even in a gas flow exceeding a certain velocity, and moreover, In the above embodiment, the vane 1 forming the zigzag-shaped fluid passage 2 is formed by bending plates 11 and 12 having liquid separation holes 14, and these bending plates 11. Although a plurality of drains 15 are formed between the drains 12 and a partition plate 13, according to the present invention, it may be formed only by the bent plates 11 and 12 as shown in FIG.
According to the present invention, the liquid separation holes 14 formed on the surfaces of the bent plates 11 and 12 may be arranged in a staggered manner as shown in FIG. In this way, the bending rigidity of the vane 1 can be increased more strongly.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the plate has a plurality of rows of liquid separation holes formed at regular intervals, and is bent in a sawtooth shape along the direction of the rows of the holes. Since the bent plates are arranged opposite each other to form a zigzag-shaped fluid passage, the vane is easy to manufacture, and there is no damage to the vane due to fluid vibration, and stable moisture separation performance can be obtained. Separation equipment can be provided.

[Brief explanation of the drawing]

Figure 1 is a side view showing the schematic configuration of conventional moisture separation performance.
FIG. 2 is a perspective view showing the structure of a conventional vane, FIGS. 3 to 6 are views showing an embodiment of the present invention, and FIG. 3 is a side view showing the schematic structure of a moisture separator. Figure 4 is a sectional view showing the configuration of the vane, Figure 5 is a plan view of the vane, and Figure 6 (
a), (b), and (C) are explanatory diagrams explaining the vane manufacturing method, and FIGS. 7 and 8 are diagrams showing other embodiments of the present invention,
FIG. 7 is a cross-sectional view showing the configuration of the vane and the like, and FIG. 8 is a plan view of the vane in which liquid separation holes are arranged in a staggered manner. 1... Vane, 2... Fluid passage, 11.12...
Bending plate, 13... Partition plate, 14... Liquid separation hole, 15
...Drain end. Applicant's agent Patent attorney Takehiko Suzue Figure 1 Figure 2

Claims (3)

[Claims] (1) Moisture R (formed at regular intervals on the plate surface in the device) for removing liquid particles contained in the scum by passing gas through a zigzag fluid passage.
! The zigzag-shaped fluid passage is formed by having several rows of branch holes, and by arranging bent plates bent in the direction of the rows of the holes to face each other to form the zigzag-shaped fluid passage. )
Separation device. (2) The moisture separating device according to claim 1, wherein the liquid separation holes are formed in a long hole shape along the row direction of the holes. (3) The liquid content 1'! 1! The moisture separator according to claim 1, wherein the holes II are arranged in a staggered manner with the holes in adjacent rows being shifted from each other.