JPS586282A - Flasher - Google Patents

Abstract

PURPOSE:To obtain flash vapor of high dryness by providing a horizontal type cylindrical vessel closed at both ends by semicircular end plates, a perforated plate and a sepn. chamber for removing water drops in flash vapor by means of a moisture separator, etc. CONSTITUTION:The geothermal water fed through a geothermal water inlet 12 flows into a flash chamber 23 through an injection nozzle 23, and part thereof turns to flash vapor. Further, the geothermal water collides against an end plate 17, sticks thereon and flows in the form of a thin water film. This water is collected in the channel part 19a of a drain capturing device 19 and is discharged through a drain outlet 16. The flash vapor contg. the water drops failed to be separated in the chamber 23 flows as horizontal flow into a sepn. chamber 25, where it collids against a perforated plate 26, by which part of the water drops are separated. The vapor past the holes of said plate turns to the vapor flow of a uniformly regulated distribution of velocities. As it passes through a moisture separator 30, it is thoroughly removed of water drops.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flasher used in a geothermal power generation system.

As a system for obtaining electric power using geothermal heat, a geothermal water type geothermal power generation system as shown in No. 1 wJ is known.

That is, the geothermal water from the geothermal tank 1 is introduced into the ceno-arm unit 2, where the geothermal water and steam are separated, the steam is directly supplied to the steam turbine 3, and the remaining geothermal water is The pressure is lower than that of the steam turbine 3 and the generator 5.
It is designed to extract power from the In addition, the geothermal water remaining in the flash chamber is returned to the reducer C, while the steam that has done work in the steam turbine J undergoes pseudo-condensation and condensation in the condenser R, and is mixed with cooling water and cooled. A portion of the water is then collected via pump 1 to the cooling tower.

Figure 2 shows the internal structure of a typical booksheer currently in use. In FIG. 2, 11 is a main body shell, 12 is a geothermal water inlet, 13 is an injection nozzle, 14 is a guide plate, 15 is a steam outlet, and 16 is a drain outlet.

In a flashy having such a structure, the geothermal water that has flowed into the main body shell 11 through the geothermal water population 12 is ejected into the main body shell 11 through the injection nozzle 13, and at the same time, the geothermal water is ejected into the main body shell 11 through the injection nozzle 13, and at the same time, the geothermal water is ejected into the main body shell 11 through the injection nozzle 13, and at the same time, the geothermal water is ejected into the main body shell 11 through the injection nozzle 13, and at the same time, the amount of thermal energy is Some of it becomes flash steam. Furthermore, the geothermal water collides with the guide plate 14, thereby promoting flushing. The flashed steam rises within the main body shell 11, passes through the steam outlet 15, and is supplied to the above-mentioned steam turbine 3. On the other hand, the remaining geothermal water once accumulates in the lower part of the main body shell 11 and is then sent from the drain outlet 16 to a reduction pump (not shown).

In the flasher configured as described above, after the hot water jetted from the jet nozzle 13 collides with the guide plate 14, among the hot water droplets scattered on average into the main body 1, a relatively large diameter droplet is dispersed. The material descends due to gravity and accumulates at the bottom of the main body 11, becoming a drain. However, small-diameter water droplets become fludge, and the drag force from the upward flow of steam is entrained by the upward flow due to gravity, and the water droplets flow through the steam outlet 15 into the steam turbine 3 described above.

In this way, when water droplets are entrained in the steam and the dryness of the steam flowing into the turbine decreases, the humidity near the final stage of the turbine increases proportionally, causing erosion of the nozzles and blades. Furthermore, a large amount of silica, calcium, etc. are dissolved in the geothermal water], and the water droplets containing these are not separated by the flasher 4, becoming fludge and accompanying the steam to the steam turbine S.
If it flows into the air, it will deposit on the nozzles and blades near the inlet, narrowing the passage area and not only causing a decrease in output, but also seriously interfering with operation.

As described above, in order to improve the performance and reliability of geothermal water geothermal power generation systems, it is essential to obtain flash steam with fewer water droplets.

The present invention has been made in view of the above, and has the objective of preventing the scattering of geothermal water, rectifying the flow of flood and steam, and providing a moisture separator with a highly dry 7'y pipe and steam. The purpose of the present invention is to provide a miniaturized 7 latshear that obtains the following.

Hereinafter, the present invention will be explained in detail based on the drawings. In FIG. 3, reference numeral 1 indicates a main body shell 11, which is a horizontal cylindrical container having a drain outlet IC at its lower part. End plates 17.11 are provided at both ends of this horizontal cylindrical container. The end plate 18 at one end has a steam outlet 15, and
□A geothermal water reservoir 12 is provided near the mirror plate 11 at the other end, and an injection nozzle 13 is connected to the tip thereof. The central axis of the injection nozzle 13 coincides with the central axis of the container.

The end plate 17 is also a guide plate for the hot water spouted from the injection nozzle 13, and the main body part where the hemispherical shape ends and transitions to a cylindrical shape has a geothermal water drain for separating the geothermal water drain. Drain separator 19 and fludge, 111z
s are provided concentrically.

The drain separation device 19I/i has a groove portion 19a having a U-shaped cross section and a partial notch, and this groove portion 19atf is provided around the body body 11 as shown in the fourth figure, and the partition plate 10
It is growing at t. A perforated plate 21 is connected to the partition plate 20 in a paper-length manner, and a drain discharge chamber 21 is formed by the perforated plate 21 and the partition plate 20.

On the other hand, a separation chamber 25 is connected back to back to the chamber 23, and this separation chamber 25 has a perforated plate 2 on the upstream side of the flow.
6, and a moisture separator 30 is installed on the downstream side. - Further, a steam exhaust chamber 28 is provided adjacent to the separation chamber 25 with the moisture separator 30 in between.

Next, the effect will be explained.

The geothermal water sent from the geothermal water inlet 12 is sent to the injection nozzle 13. It flows into the chamber 23 and becomes flash [7, part of which becomes fludge and steam] corresponding to the enthalpy it possesses. Furthermore, the geothermal water collides with and adheres to the head plate 11, appears as a thin water film, flows along the head plate 1'FC, is collected in the groove 19mK of the drain collection device 19, and is collected at the center of the lower part of the main body body 11. It is discharged to the outside through the drain outlet 1σ installed in the drain outlet 1σ. With the flooding, some of the geothermal water becomes water droplets and scatters into the chamber 2S, but those with large diameters fall downward due to gravity, join the drain, and flow outside the vessel. is discharged to.

Fludge and steam containing water droplets that are not separated in the fludge chamber 23 flow horizontally into the separator @ZS and pass through the perforated plate 2.
A part of the water droplets is separated by colliding with the pores 6, and a uniform rectified steam flow with a multi-velocity distribution is formed by passing through the holes. The rectified fludge and steam pass through a moisture separator 30, where water droplets are separated at almost complete pressure. The water droplets collected and separated by the perforated plate 2# and the moisture separator sO pass through the perforated plate 21 and join the drain. In this way, the flash steam becomes dry and saturated steam and is sent through the multi-steam discharge chamber 28 from the steam outlet 15 to a turbine (not shown).

As explained above, according to the present invention, since the caul plate is made of a hemispherical end plate, the hot water adheres and flows, thereby reducing the amount of water droplets that fly away. In addition, the hot water is led to a drain collection device, and since the drain is clearly separated from the steam flow, it is difficult to be entrained in the steam, and the flash steam containing water droplets with a small diameter is By passing through a perforated plate installed in the separation mold, the multivelocity distribution is made uniform, and the water droplets are almost completely separated and collected in the moisture separator, and become dry and saturated at the steam outlet of the fuselage.

Therefore, according to the 7 lashers of the present invention, since highly dry fludge and steam can be obtained, there is no concern that the turbine nozzles and blades will be eroded, and there is no fear that silica and calcium particles will be deposited and deposited on the nozzles and blades. Therefore, it has a great effect on improving the performance and reliability of hydrothermal geothermal power generation systems.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a hot water geothermal power generation system, FIG. 2 is a cross-sectional view showing the internal structure of a conventional 7-rusher, and FIG. 3 is a cross-sectional view showing the internal structure of a 7-rusher according to the present invention.
FIG. 114 is a sectional view taken along the Moum line in FIG. 3 and viewed in the direction of the arrow. 11... Main body trunk, 12... Geothermal water inlet, 13... Injection nozzle, xi-@ air outlet, 1g-- drain outlet, 17
! , 111... End plate, I II-... Drain collection device, 19 &-... Groove, 20... Partition plate, 21... Perforated plate, 23... Fludge, chamber, 25... Separation chamber, 26・
... Porous plate, jF-- Drain discharge chamber, 28... Steam discharge chamber, 30... Moisture separation device. Applicant's agent Patent attorney Takehiko Suzue f41 Figure 2

Claims (1)

[Claims] A horizontal cylindrical container is enclosed at both ends by spherical head plates, has a geothermal water inlet in the center, a steam outlet in one of the head plates, and a drain outlet in the lower part, and the water is sent from an injection nozzle connected to the geothermal water inlet. a flash chamber that collects the steam that is depressurized and flooded while colliding the geothermal water with the mirror plate, and a drain collection device that is located in the flutter and chamber and is arranged concentrically with the injection nozzle. , a separation chamber for removing water droplets separated by a perforated plate and a moisture separator, a drain discharge chamber formed by a partition plate provided at the bottom of the separation chamber and communicating with the drain outlet, and a drain discharge chamber for communicating with the drain outlet; 7. A steam exhaust chamber connected to the chamber and communicating with the steam outlet.