WO2011134441A4

WO2011134441A4 - Vertical separation steam generator

Info

Publication number: WO2011134441A4
Application number: PCT/CZ2011/000041
Authority: WO
Inventors: Ladislav Vilimec; Kamil STÁREK; Vladimír KUPSA
Original assignee: VÍTKOVICE POWER ENGINEERING a.s.
Priority date: 2010-04-29
Filing date: 2011-04-28
Publication date: 2012-05-18
Also published as: WO2011134441A3; GB2494067A; CZ303921B6; GB201219542D0; CZ2010326A3; WO2011134441A2

Abstract

System of heat exchange tubes (2) mounted in the upper and lower tube sheets (3,4) and jacketed with a cylindrical shell (11) is placed in the outer shell (1). Cavities (5) interconnected with tube space (6) are created in the outer shell (1) above and under tubes (2). Inter-tube space (6) enclosed circumferentially with cylindrical shell (11) and at the top and bottom with tube sheets (3,4) is located between tubes (2). Outer shell (1) is equipped with primary pipe sockets (7,8) and secondary pipe sockets (9,10) for media inlet and outlet. There is a gap (12) created between cylindrical shell (11) and outlet pressure shell (1). Inter-tube space (6) has inter-tube discharge (13) of condensate at the bottom. Cooler (14) with accessories is preferably above or below jacketed tubes (2). Systems of jacketed tubes (2) can be situated in multiplicity one above another. The media inlet and outlet elements should be matched adequately to the addition of cooler (14) and/or system of tubes (2).

Claims

AMENDED CLAIMS received by the International Bureau on 28 March 2012 (28.03.2012)

1. Vertical separation steam generator including outer shell (1) in which at least one system of heat exchange tubes (2) is placed having open ends that are mounted in upper and lower tube sheets (3,4), where cavities (5) with a space interconnected with the space in tubes (2) are located above the upper tube sheet (3) and under the lower tube sheet (4) in the inner space of the outer shell (1 ), while inter-tube space (6) enclosed at the top and at the bottom with tube sheets (3,4) is located between tubes (2), and where the outer shell (1 ) is in the form of closed pressure vessel equipped with at least one pair of primary pipe sockets (7,8) for input and output of cooled medium based on steam-gas mixture and at least one pair of secondary pipe sockets (9,10) for input and output of cooling medium, where the primary pipe sockets (7,8) are led into the inter-tube space (6) and secondary pipe sockets (9, 10) are led into the space interconnected with the space of tubes (2), characterized by that the system of heat exchange tubes (2) is equipped with a cylindrical shell (1 1 ) having at the lower end at least one inter- tube discharge (13) of condensate leading from the inter-tube space (6), for draining of the condensate separated from the steam-gas mixture, where the cylindrical shell (1 1 ) with the tubes (2) and the tube sheets (3,4) create together an evaporator of the type in which the cylindrical shell (1 1 ) is closed with the tube sheets (3,4) at the top and at the bottom, while a circumferential and in vertical direction open gap (12) for circulation of cooling medium is created outside the evaporator around its circumference between the cylindrical shell (1 1) of the said evaporator and the outer shell (1 ) of the steam generator.

2. Vertical separation steam generator according to the claim 1 characterized by that at least one cooler (14) equipped with elements (15) for input and output of cooling medium is placed under the evaporator consisting of cylindrical shell (1 1) with tubes (2) and tube sheets (3, 4), and the space between the evaporator and the cooler (14) is divided with at least one lower partition (16), while the space located under the cooler (14) is equipped with at least one supplementary condensate discharge (17) for draining of condensate separated from the steam-

AMEIMDED SHEET (ARTICLE 19) 22 gas mixture and the said supplementary condensate discharge (17) is led out of the of the outer shell (1).

3. Vertical separation steam generator according to the claim 2 characterized by that at least one inter-tube discharge (13) is embodied as a connecting channel through which the inter-tube space (6) is interconnected with the space under the lower partition (16).

4. Vertical separation steam generator according to the claims 1 to 3 characterized by that at least one cooler (14) equipped with elements (15) for input and possibly output of cooling medium is placed above the evaporator consisting of cylindrical shell (1 1 ) with tubes (2) and tube sheets (3, 4), and the space between the evaporator and the cooler (14) is divided by means of at least one upper partition (18), while the space located above the upper partition (18) is in its lower part equipped with at least one supplementary condensate discharge ( 7) for draining of condensate separated from the steam-gas mixture and, as the case may be, also of a drawn-off cooling medium.

5. Vertical separation steam generator according to the claim 4 characterized by that the upper primary pipe socket (7) consists of two pieces (71 , 72) separated from each other, from which the upper piece (71 ) of the primary pipe socket (7) is located in the wall of the outer shell (1 ) and is led outwards of the outer shell (1) on one side and into the space above the upper partition (18) on the other side, and the lower piece (72) of the primary pipe socket (7) is led into the space above the upper partition (18) on one side, and into the inter-tube space (6) on the other side.

6. Vertical separation steam generator according to the claims 1 to 5 characterized by that at least two evaporators comprised of cylindrical shell (1 1 ) with tubes (2) and tube sheets (3, 4) are placed one above the other in one outer shell (1 ) where the space between these evaporators is divided with at least one dividing wall (19), while each of these evaporators has its own secondary pipe sockets (9,10) for input and output of cooling medium and its own inter-tube 23 discharge (13) of condensate, and these secondary pipe sockets (9,10) are interconnected in parallel.

7. Vertical separation steam generator according to the claim 6 characterized by that the inter-tube spaces (6) of these evaporators are mutually interconnected using at least one connecting tube (20) and the steam generator has only one pair of primary pipe sockets (7, 8).

8. Vertical separation steam generator for heat exchange between media according to the claim 6 characterized by that the inter-tube spaces (6) of these evaporators are separated and each evaporator has its own primary pipe sockets (7, 8).

STATEMENT UNDER ARTICLE 19 (1)

STATEMENTS

Based on the Search Report, the claim 1 was restructured. The new vertical separation steam is provided with an evaporator which has a partial similarity to the evaporator used to D3, but it is important that the new vertical separation steam has his cylindrical shell (1 1 ) provided with intertube discharge (13) for draining of condensate separated from the steam-gas mixture. The intertube discharge (13) has no equivalent at D3 and is fundamental for the function of the vertical separation steam. The evaporator described in D3 is useable for other aim, i.e. for producing of vapour from liquid water und is unable to fulfil the aim of separation steam, i.e. separation of liquid water condensate from steam-gas mixture.

Claim 1 being overwroten, claims 2 to 8 stays as originally filed.

Amendments of Claims:

Previous: New:

1 1 , restructured

2 to 8 2 to 8 as originally filed