DE4140788A1 - Sepn. of water-steam mixt. from rise pipes of circulating steam producer - involves hollow cylinder provided at one end with water outlet connection and at other end with closure. - Google Patents

Abstract

Beginning at the water outlet connection (2), the water chamber (4), the floor plate (5) with twist body (6), the water-steam chamber (7), the collar (8) and the steam chamber (9) with bulge surface filter (10) are arranged axially one behind the other in the hollow cylinder (1). The steam chamber (9) has several steam outlet connections (11) inclined at an angle between 1 and 5 deg. to the longitudinal axis of the hollow cylinder in the direction of the water outlet connection (2). The water-steam chamber (9) incorporates several tangential water-steam inlet connections (12), which are arranged in one or more planes. USE/ADVANTAGE - With circulating steam producers, to restrict load altering speed.

Description

The invention relates to a device for separating the Wasser-Dampfge mix from the riser pipes of a circulation steam generator.

Circulation steam generators are water pipe steam generators in which the ver steaming water, due to the difference in density between water and what water vapor mixture (natural circulation) or by pumping (forced circulation) becomes.

However, it is disadvantageous with circulation steam generators that with sliding pressure operation, the load change speeds are significantly limited must, since the resulting temperature changes correspond to the load change appropriate heat stresses in the thick-walled steam drum, which can lead to malfunctions.

The object of the invention is to provide a device that makes it possible light to avoid the disadvantages mentioned.

This object is achieved through the features of the characterizing part of the patent claim solved.

The thick-walled steam drum can pass through the measures according to the invention several thin-walled and overall inexpensive devices, according to the invention described and illustrated below, are replaced. Further At the same time, care is taken to ensure that the separation of the Water-steam mixture takes place.

The invention is explained in more detail using the description and the drawings tert:  

Show it:

Fig. 1 section through the device for separating the water Dampfge premix,

Fig. 2 section through the device according to line 'AA'.

According to Figures 1 and 2 -. The water-steam mixture from the riser tubes 18 of a recirculating steam generator, not shown, is tangentially as in the water vapor space 7 of the vertical hollow cylinder 1 by the water-Dampfein occurs clip 12 supplied so that the boiler water trombenförmig to the In nenwand of the hollow cylinder 1 and urges the steam, due to its low density, in the center of the axis. The bottom plate 5 forms an annular gap 16 with the inner wall of the hollow cylinder 1 in which the swirl bodies 6 are arranged, which complicate the entrainment of steam with the separated water from the water space 4 through the water outlet pipe 2 into the downpipe 17 . The upper end of the water drum 20 is limited by the collar 8 be.

The steam flows upwards and, depending on the steam quality requirements, can be cleaned in the baffle filter 10 arranged above the collar 8 to enlarge the droplets. The drops are in the ring gap 19 between the baffle filter 10 and the inner wall of the hollow cylinder 1 steered, discharged at the lowest point and immediately above half of the bottom plate 5 through the drainage lines 13 , 14 , 15 back.

The steam emerging from the baffle filter 10 with a usual residual water content of max. 0.5% is discharged from the steam chamber 9 above the baffle filter 10 through the inclined steam outlet connection 11 in such a way that condensing steam collects in the event of load changes - combined with pressure changes - and can flow back to the base plate 5 .

The average operating water level in the hollow cylinder 1 is held at the bottom plate 5 . The boiler feed water is mixed in a separate mixing piece (not shown) in the downpipe 17 .

To limit the upper water level in the hollow cylinder 1 , a conventional water discharge can be arranged via a drain line at the lowest point of the Hohlzylin 1 .

Legend

1 hollow cylinder
2 water outlet connections
3 closure
4 water room
5 base plate
6 swirl bodies
7 Water-steam room
8 collar
9 steam room
10 baffle filters
11 steam outlet connection
12 water-steam inlet connections
13 drainage pipe
14 drainage pipe
15 drainage pipe
16 annular gap
17 downpipe
18 riser pipe
19 annular gap
20 water surge

Claims (1)

Device for separating the water-steam mixture from the riser pipes of a circulation steam generator, characterized in that

• a) the hollow cylinder ( 1 ) is provided at one end with the water outlet connection ( 2 ) and at the other end with the closure ( 3 );
• b) starting at the water outlet nozzle ( 2 ) the water chamber ( 4 ), the base plate ( 5 ) with swirl body ( 6 ), the water-steam chamber ( 7 ), the collar ( 8 ) and the steam chamber ( 9 ) with baffle filter ( 10 ) axially, one behind the other in the hollow cylinder ( 1 ) are arranged;
• c) the steam chamber ( 9 ) is provided with a plurality of steam outlet connections ( 11 ), each of which is inclined at an angle between approximately 1 ° to 5 ° to the longitudinal axis of the hollow cylinder ( 1 ) in the direction of the water outlet connection ( 2 );
• d) the water-vapor space ( 9 ) is provided with a plurality of tangential water-steam inlet connections ( 12 ) which are arranged in one or more levels (n);
• e) the steam outlet connection ( 11 ) or the steam chamber ( 9 ) through the drainage water lines ( 13 ) or ( 14 ) via the drainage line ( 15 ) with the water-steam chamber ( 7 ), directly above the base plate ( 5 ) are.