Connector for fastening a steam generator to a flow mixing header in an integral nuclear reactor

Patent metadata

Field	Value
Publication number	US-11270806-B2
Application number	US-201816757139-A
Country	US
Kind code	B2
Filing date	Aug 30, 2018
Priority date	Oct 26, 2017
Publication date	Mar 8, 2022
Grant date	Mar 8, 2022

Abstract

The present invention relates to a connecting apparatus for a steam generator disposed between a steam generator and a flow mixing header to fasten the steam generator to the flow mixing header in a sealed manner, and an integral reactor including the same. Fastening the steam generator to the flow mixing header in a sealing manner includes: a base plate mounted on the flow mixing header having a through hole formed at the center thereof; and a steam generator connecting portion protruding along the circumference of the through hole in the base plate allowing an outlet of the steam generator to be inserted and fastened thereto. Since the connection for the steam generator is tightly fastened to the flow mixing header, leakage of a coolant therebetween is prevented, and since the steam generator is horizontally disposed in the flow mixing header, structural stabilization may be achieved.

First claim

The invention claimed is:

1. A connector for fastening a steam generator to a flow mixing header, the connector disposed between a steam generator and a flow mixing header and fastening the steam generator to the flow mixing header in a sealing manner, the connector comprising:
a base plate mounted on the flow mixing header and having a through hole formed at the center thereof;
a steam generator connecting portion protruding along the circumference of the through hole in the base plate and allowing an outlet of the steam generator to be inserted and fastened thereto; and
a plurality of elastic members provided in plurality along the circumference of the steam generator connecting portion on an other surface of the base plate and pressed toward a lower surface of the steam generator to be elastically deformed.

2. The connector of claim 1 , further comprising:
a horizontality adjusting portion provided in plurality along the circumference of the steam generator connecting portion on the other surface of the base plate to support a lower surface of the steam generator, and configured to adjust horizontality of the steam generator.

3. The connector of claim 2 , wherein
the horizontality adjusting portion includes:
a support protrusion outwardly protruding from the base plate and threaded on an outer circumferential surface thereof; and
a height adjusting member fastened to the support protrusion by a screw and moving in a vertical direction by a rotational movement to adjust a height of the steam generator.

4. The connector of claim 1 , further comprising:
an escape preventing portion provided in plurality along the circumference of the steam generator connecting portion on the other surface of the base plate and connected to the lower surface of the steam generator so as not to escape from the steam generator.

5. The connector of claim 4 , wherein
the escape preventing portion is connected to the steam generator to have a predetermined clearance.

6. The connector of claim 5 , wherein
the escape preventing portion includes: a support member provided as a pair, protruding outwards from the base plate, and allowing a fixing protrusion formed in the steam generator to be inserted therebetween; and
a fastening member inserted into the pair of support members and fastening the fixing protrusion to the pair of support members,
wherein the fixing protrusion has a slit formed in a vertical direction and has a predetermined clearance in a vertical direction in a state of being fastened to the support member by the fastening member.

7. The connector of claim 1 , wherein
the steam generator connecting portion further includes: a steam generator sealing member that enables sealing with the outlet of the steam generator.

8. A connector for a steam generator disposed between a steam generator and a flow mixing header and fastening the steam generator to the flow mixing header in a sealing manner, the connector comprising:
a base plate mounted on the flow mixing header and having a through hole formed at the center thereof;

a steam generator connecting portion protruding along the circumference of the through hole in the base plate and allowing an outlet of the steam generator to be inserted and fastened thereto; and
the steam generator connecting portion has an inner diameter greater than a diameter of the through hole to form a step portion with the through hole, and the outlet of the steam generator is supported by the step portion.

9. The connector of claim 8 , wherein
the through hole is formed to be tapered to have a diameter reduced toward an inlet of the flow mixing header from the steam generator connecting portion, and a diameter of the steam generator connecting portion is greater than an inner diameter of the outlet of the steam generator.

10. An integral nuclear reactor comprising:
a reactor vessel;
an internal structure disposed inside the reactor vessel and dividing the inside of the reactor vessel into an inner space and an outer space to allow a coolant to flow therein;
a plurality of steam generators disposed in the outer space of the reactor vessel;
a flow mixing header disposed in the outer space of the reactor vessel, allowing the plurality of steam generators to be connected thereto, mixing coolant introduced from the plurality of steam generators, and discharging the mixed coolant; and
a connector for a steam generator connecting the steam generator and the flow mixing header and suppressing leakage of a coolant from a connection portion between the steam generator and the flow mixing header, and
wherein the connector for the steam generator comprising:
a base plate mounted on the flow mixing header and having a through hole formed at the center thereof; and
a steam generator connecting portion protruding along the circumference of the through hole in the base plate and allowing an outlet of the steam generator to be inserted and fastened thereto; and
a plurality of elastic members provided along the circumference of the steam generator connecting portion on an other surface of the base plate and pressed toward a lower surface of the steam generator so as to be elastically deformed.

11. The integral nuclear reactor of claim 10 , wherein the connecting apparatus further comprising:
a horizontality adjusting portion provided in plurality along the circumference of the steam generator connecting portion on the other surface of the base plate to support a lower surface of the steam generator, and configured to adjust horizontality of the steam generator.

12. The integral nuclear reactor of claim 11 , wherein the horizontality adjusting portion includes:
a support protrusion outwardly protruding from the base plate and threaded on an outer circumferential surface thereof; and
a height adjusting member fastened to the support protrusion by a screw and moving in a vertical direction by a rotational movement to adjust a height of the steam generator.

13. The integral nuclear reactor of claim 10 , wherein the connector, further comprising:
an escape preventing portion provided in plurality along the circumference of the steam generator connecting portion on the other surface of the base plate and connected to the lower surface of the steam generator so as not to escape from the steam generator.

14. The integral nuclear reactor of claim 13 , wherein the escape preventing portion is connected to the steam generator to have a predetermined clearance.

15. The integral nuclear reactor of claim 14 , wherein the escape preventing portion includes: a support member provided as a pair, protruding outwards from the base plate, and allowing a fixing protrusion formed in the steam generator to be inserted therebetween; and
a fastening member inserted into the pair of support members and fastening the fixing protrusion to the pair of support members,
wherein the fixing protrusion has a slit formed in a vertical direction and has a predetermined clearance in a vertical direction in a state of being fastened to the support member by the fastening member.

16. The integral nuclear reactor of claim 10 , wherein the steam generator connecting portion further includes: a steam generator sealing member that enables sealing with the outlet of the steam generator.

17. An integral nuclear reactor comprising:
a reactor vessel;
an internal structure disposed inside the reactor vessel and dividing the inside of the reactor vessel into an inner space and an outer space to allow a coolant to flow therein;
a plurality of steam generators disposed in the

Assignees

• Korea Atomic Energy Res
• King Abdullah City For Atomic And Renewable Energy

Inventors

• Park Yunbum
• Lee Gyumahn
• Kim Jongwook
• Surh Hanbum
• Chang Seongmin
• Lee Kangheon
• Ahn Kwanghyun
• Lee Jaeseon
• Jeong Kyeonghoon
• Park Jinseok
• Song Jaeseung
• KIM Keungkoo

Classifications

• G21C15/22

  Structural association of coolant tubes with headers (joints of tubes in general F16L) · CPC title

• G21C1/32 Primary

  Integral reactors, i.e. reactors wherein parts functionally associated with the reactor but not essential to the reaction, e.g. heat exchangers, are disposed inside the enclosure with the core (G21C1/02 - G21C1/30 take precedence) · CPC title

• F22B33/18

  Combinations of steam boilers with other apparatus · CPC title

• G21C1/326

  wherein the heat exchanger is disposed next to or beside the core · CPC title

• G21D1/006 Primary

  primary side of steam generators (secondary side of steam generators F22B1/00, F22B35/00 or F22B37/00) · CPC title