JPS6240662Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Steam entering a steam turbine is typically dehumidified by a moisture separator.

As shown in FIGS. 1 and 2, the moisture separator is generally a corrugated plate (vane) type steam/water separator. In the same air water separator, a plurality of corrugated plates 1 are supported at predetermined intervals between front partition plates 2, 2' and rear partition plates 3, 3', and moisture is removed from the front in the direction of arrow a. The steam contained therein flows in and is dehumidified by the corrugated plate 1, and only the steam flows out in the direction of arrow b and reaches the turbine, while the liquid dehumidified by the corrugated plate 1 is discharged from the lower discharge port 4.

In the conventional steam/water separator, the dehumidified mist is applied to the bent part of the rear partition plate 3 under the dynamic pressure (γυ ² /2g) of the steam flow, as shown in the colored part 5 of FIG.
Due to changes in dynamic pressure, the liquid that has accumulated in this way jumps over the rear partition plate 3 as shown in 6 in Figure 1 and merges with the steam again, forming a gas. It impairs the water separation effect.

Note that if the rear partition plate 3 is made higher in order to prevent this, the outflow area of the steam will decrease, the steam flow rate will increase, and the steam/water separation efficiency will decrease.

This invention was proposed to solve these problems.In a corrugated plate type moisture separator in which multiple corrugated plates are supported between the front and rear partition plates, moisture that accumulates in the same area on the rear partition plate This invention relates to a moisture separator characterized in that it is provided with a blocking member that prevents mist from rising.

In the present invention, as described above, a blocking member is provided on the rear partition plate that supports the corrugated plate in the moisture separator, and the blocking member prevents the mist accumulated in the rear partition member from rising. As a result, the mist will not merge with the steam at the outlet, and the moisture separation efficiency will not deteriorate. In addition, in the present invention, as mentioned above, by disposing the mist rise prevention member on the rear partition member itself, the rise of the mist is prevented without increasing the height of the rear partition member. The present invention has many advantages, such as not reducing the steam outflow area and therefore not reducing the steam/water separation efficiency.

The present invention will be described below with reference to the illustrated embodiments.

11 is a corrugated plate in a corrugated plate type (vane) steam/water separator, which includes front partition plates 12, 12' and rear partition plate 1.
3 and 13' with a predetermined distance between them,
Steam containing moisture flows in from the front in the direction of arrow a, is dehumidified by the corrugated plate 11, and only the steam flows out in the direction of arrow b and reaches the turbine.On the other hand, the liquid dehumidified by the corrugated plate 11 is discharged from the lower part. It is discharged from the outlet 14.

One piece in the middle of the rising piece of the rear partition plate 13,
Or a plurality of plate-shaped mist rise prevention members 15
is attached so that it is oriented in the direction of the corrugated plate.

Since the illustrated embodiment is configured as described above, the water 16 accumulated in the bent portion of the rear partition plate 13
The blocking member 15 prevents the water from being transmitted along the rising portion of the rear partition plate 13 due to the steam flow, or from being scattered and rising to the top of the partition plate 13, and along the lower surface of the blocking member 15. The mist falls. Therefore, the mist does not merge with the steam at the outlet, and the moisture separation efficiency does not deteriorate.

Further, since the gap between the rear partition plate 13 and the corrugated plate 11 is minute, the blocking member 15 slightly penetrates into the corrugated plate 1. In this case, since most of the dehumidification in the corrugated sheet 11 is performed in front of the center of the corrugated sheet 11, the separated mist that falls along the corrugated sheet 11 accumulates on the upper surface of the blocking member 15. Although it is unthinkable to do so, the same blocking member 15 is
As shown in the figure, the separated mist blocking member 15 has a structure that is downward toward the front in the flow direction.
This prevents accumulation on the upper surface and more reliably achieves a steam/water separation effect.

[Brief explanation of the drawing]

Figure 1 is a vertical side view of a conventional moisture separator, Figure 2 is a vertical side view of a conventional moisture separator.
The figure is a partial plan view thereof, FIG. 3 is a longitudinal side view showing an embodiment of the moisture separator according to the present invention, FIG. 4 is a partial plan view thereof, and FIG. 5 is a partially enlarged longitudinal side view thereof. . 11... Corrugated plate, 12, 12'... Front partition plate,
13, 13'... Rear partition plate, 15... Mist rise prevention member.

Claims (1)

[Scope of utility model registration request] A corrugated plate type moisture separator in which a plurality of corrugated plates are supported between front and rear partition plates, characterized in that a blocking member is disposed on the rear partition plate to prevent mist accumulated in the rear partition plate from rising. Moisture separator.