Condenser, multistage pressure condenser provided therewith, and reheating module used in condenser

Patent metadata

Field	Value
Publication number	US-9638469-B2
Application number	US-201414760098-A
Country	US
Kind code	B2
Filing date	Feb 13, 2014
Priority date	Feb 13, 2013
Publication date	May 2, 2017
Grant date	May 2, 2017

Abstract

This low-pressure condenser is provided with: a pressure bulkhead which partitions the inside of the container into an upper space and a lower space; a heat transfer tube which is arranged in the upper space; and a reheater which is arranged in the lower space and which, by means of high-temperature steam flowing from the outside into the lower space, heats water which condenses in the upper space and flows into the lower space. The reheater includes multiple partition members, a receiving plate which receives water flowing downward via the partition members, and a dam which is connected to the outer peripheral edge of the receiving plate. The lower ends of the multiple partition members are below the upper end of the dam.

First claim

The invention claimed is:

1. A condenser, comprising:
a container into which steam flows;
a pressure bulkhead which partitions the inside of the container into an upper space and a lower space and in which a plurality of bulkhead through-holes are formed;
a heat transfer tube which is disposed in the upper space of the container, and condenses the steam which flows into the upper space; and
a reheater which is disposed in the lower space of the container, and which heats water which is condensed from the steam in the upper space of the container and flows into the lower space of the container, by means of high-temperature steam which flows into the lower space from the outside of the container,
wherein the reheater includes a plurality of partition members which extend vertically in the lower space of the container and are arranged at intervals from each other, a receiving plate which receives water flowing downward via the plurality of partition members, and a dam which is connected to an outer peripheral edge of the receiving plate and surrounds the receiving plate, and
wherein lower ends of the plurality of partition members are below an upper end of the dam.

2. The condenser according to claim 1 ,
wherein a plurality of receiving plate through-holes are formed in the receiving plate.

3. The condenser according to claim 1 ,
wherein a plurality of dam through-holes are formed in the dam.

4. The condenser according to claim 1 ,
wherein the reheater includes side plates which are disposed on both sides of a collection of the plurality of partition members in the direction in which the plurality of partition members are arranged, and oppose each other at intervals from the partition members.

5. The condenser according to claim 1 ,
wherein the reheater includes an upper end support member which supports each upper end portion of the plurality of partition members, and a lower end support member which supports each lower end portion of the plurality of partition members.

6. The condenser according to claim 5 ,
wherein an upper engagement portion, which is recessed from the lower side of the lower space of the container toward the upper side and into which each upper end portion of the plurality of partition members enters, is formed on the upper end support member,
wherein a lower engagement portion, which is recessed from the upper side of the lower space of the container toward the lower side and into which each lower end portion of the plurality of partition members enters, is formed on the lower end support member, and
wherein, in a state where the partition member is elastically compressed vertically, the upper end portion of the partition member enters into the upper engagement portion of the upper end support member, while the lower end portion of the partition member enters into the lower engagement portion of the lower end support member, and the partition member is interposed between the upper end support member and the lower end support member so as to be supported.

7. The condenser according to claim 1 ,
wherein the partition member includes a corrugated plate in which convex portions protruding in the arrangement direction of the plurality of partition members and concave portions recessed in the arrangement direction are repeatedly formed vertically.

8. The condenser according to claim 7 ,
wherein the partition member includes the corrugated plate, and a plurality of pocket forming members which are open toward the upper side and form pockets for collecting water in cooperation with the corrugated plate.

9. The condenser according to claim 7 ,
wherein a plurality of corrugated plate through-holes are formed in the corrugated plate.

10. The condenser according to claim 5 ,
wherein the reheater includes a reheating module, and
wherein the reheating module includes the plurality of partition members, the upper end support member, the lower end support member, the receiving plate, and the dam, and the reheating module includes a connection member which connects the receiving plate, the upper end support member, and the lower end support member with each other and integrates the plurality of partition members, the upper end support member, the lower end support member, the receiving plate, and the dam.

11. The condenser according to claim 10 ,
wherein the reheating module includes a perforated plate which exists in a region vertically above the plurality of partition members and has a plurality of perforated plate through-holes penetrating vertically.

12. The condenser according to claim 11 ,
wherein the perforated plate of the reheating module constitutes a portion of the pressure bulkhead.

13. The condenser according to claim 10 ,
wherein the reheater includes a plurality of the reheating modules.

14. The condenser according to claim 13 ,
wherein the plurality of reheating modules are adjacent to each other, and
wherein the reheater includes a water guide member which introduces water reaching a position between the plurality of reheating modules onto the partition member of any reheating module.

15. The condenser according to claim 1 ,
wherein the reheater includes a steam forcible introduction device which forcibly introduces the high-temperature steam into a portion between the plurality of partition members from one side in a steam inflow direction which is perpendicular to the arrangement direction of the plurality of partition members and the vertical direction.

16. The condenser according to claim 1 ,
wherein the reheater includes a straightener which is disposed on one side in the steam inflow direction perpendicular to the arrangement direction of the plurality of partition members and the vertical direction based on the plurality of partition members, orients the flow direction of the high-temperature steam, which flows from the one side into the portions between the plurality of partition members, to the steam inflow direction, and uniformizes flow velocity distribution of the high-temperature steam in a plane perpendicular to the steam inflow direction.

17. A multistage pressure condenser, comprising:
a low-pressure condenser which is the condenser according to claim 1 ;
a high-pressure condenser in which a pressure of saturated steam generated in a process in which inflow steam is returned to water is higher than a pressure of saturated steam generated in a process in which inflow steam is returned to water in the low-pressure condenser; and
a steam duct through which a portion of the steam flowing into the high-pressure condenser flows into the lower space of the low-pressure condenser.

18. A reheating module which heats water flowing from above by means of steam from outside, comprising:
a plurality of partition members which extend vertically and are arranged at intervals from each other;
a receiving plate which receives water dropping via the plurality of partition members;
a dam which is connected to an outer peripheral edge of the receiving plate and surrounds the receiving plate;
an upper end support member which supports each upper end portion of the plurality of partition members;
a lower end support member which supports each lower end portion of the plurality of partition members; and
a connection member which connects the receiving plate, the upper end support member, and the lower end support member with each other, and integrates the plurality of partition members, the receiving plate, the dam, the upper end support member, and the lower end support member,
wherein l

Assignees

• Mitsubishi Hitachi Power Sys

Inventors

• Fujita Issaku
• Hiraoka Satoshi
• Kirihara Kenji
• Fukui Akira
• Nishiura Kensuke
• Nakamura Taichi

Classifications

• F28F25/087

  Vertical or inclined sheets; Supports or spacers · CPC title

• F28B1/02

  using water or other liquid as the cooling medium · CPC title

• F28B3/02

  by providing a flowing coating of cooling liquid on the condensing surface · CPC title

• F28F25/00

  Component parts of trickle coolers (arrangements for increasing heat transfer F28F13/00; controlling arrangements F28F27/00) · CPC title

• F28C3/06

  the heat-exchange media being a liquid and a gas or vapour (temperators for cooling steam F22) · CPC title