CN102506409B - Structural arrangement of high-temperature steam connecting pipe of steam generator of gas cooled reactor - Google Patents
Structural arrangement of high-temperature steam connecting pipe of steam generator of gas cooled reactor Download PDFInfo
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- CN102506409B CN102506409B CN2011103190080A CN201110319008A CN102506409B CN 102506409 B CN102506409 B CN 102506409B CN 2011103190080 A CN2011103190080 A CN 2011103190080A CN 201110319008 A CN201110319008 A CN 201110319008A CN 102506409 B CN102506409 B CN 102506409B
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- 238000009413 insulation Methods 0.000 claims description 18
- 239000007789 gas Substances 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 4
- 239000001307 helium Substances 0.000 claims description 4
- 229910052734 helium Inorganic materials 0.000 claims description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
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Abstract
The invention relates to a structural arrangement of a high-temperature steam connecting pipe of a steam generator of a gas cooled reactor. The structural arrangement comprises a heat insulating layer structure, a hot gas conduit, a heat exchange pipe bundle, a main steam header, a main steam connecting pipe bundle and a heat shielding barrel, wherein the heat insulating layer forms a high-temperature space in which a primary side medium flows and separates a low-temperature region in a steam generator from a high-temperature region, the hot gas conduit is a flowing channel of the high-temperature primary side medium and is used for guiding the high-temperature primary side medium into the steam generator from a reactor core of a reactor, the heat exchange pipe bundle is used for separating the primary side medium from a secondary side medium, bearing the pressure difference of the primary side medium and the secondary side medium and exchanging heat between the primary side medium and the secondary side medium, the main steam header is used for gathering the secondary side media of different heat exchange pipes and is connected with the shell of the steam generator, the main steam connecting pipe bundle is used for connecting the heat exchange pipe bundle and the main steam header and playing a role of thermal compensation, a dead gas region is formed between the heat shielding barrel and the heat insulating layer structure and provides a space for arranging the main steam header so as to separate the thermal expansion problem of the main steam connecting pipe bundle fromthe flow induced vibration problem.
Description
Technical field
The present invention relates to the heat enginnering technical field, particularly relate to a kind of HTGR steam generator structural configuration.
Background technology
The steam generator main steam connects the highest temperature zone that tube bank is in steam generator, with hot gas conduit over against, residing environmental condition is the harshest, is parts the most complicated in the steam generator structural design.Connect in the design of tube bank the steam generator master, the main factor of considering comprises:
1) the residing environment temperature of main steam connection tube bank is the highest, and the tube wall temperature of corresponding heat exchanger tube is also very high.When normal operation, the main steam heat-exchanging tube bundle can produce very big swell increment.Because the temperature of steam generator shell is lower, and intensity is very high, will on the main steam tube connector, the thermal expansion because of tube bank produce very big thermal stress like this.Therefore, when the design of main steam tube connector, need consider the thermal expansion problem of heat exchanger tube.
2) temperature of main steam tube connector beam tube wall is very high, and creep can take place heat-exchanging tube bundle, needs the heat exchanging tube bank to carry out fatigue-creep analysis.Because under hot conditions; the creep rupture strength of material can significantly reduce, and can pass through for the fatigue-creep analysis that can guarantee heat-exchanging tube bundle, need take some effective measures; as wrapping up etc. connecting tube bank, with the thermal stress that reduces heat-exchanging tube bundle and the tube wall temperature of heat-exchanging tube bundle etc.
3) main steam tube bank is over against hot gas conduit, and the flow velocity of high temperature helium is up to 60m/s in the hot gas conduit, and the stream that is easy to produce heat-exchanging tube bundle causes vibration.In order to prevent that heat-exchanging tube bundle from stream occurring and causing oscillation phenomenon, requiring to connect tube bank must have very high rigidity, namely needs necessary support is carried out in tube bank.What should indicate is, requiring of this requirement and the 1st is conflicting.In the layout of the tube connector of reality, mainly be to seek a rational half-way house, reach and satisfy the requirement that stream causes vibration and thermal expansion simultaneously.
4) inboard of main steam connection tube bank is steam, and flow velocity is bigger, and damping is held on corresponding edge and Local Damping is bigger.For the temperature that guarantees every heat exchanger tube outlet steam satisfies inhomogeneity requirement, the overall presure drop that requires to connect tube bank should be more or less the same, and namely the length of main steam tube connector is more or less the same.
5) in order to guarantee that the heat-exchanging tube bundle of steam generator can carry out the requirement of inservice inspection future, when arranging the connection tube bank, require the bending diameter of connection tube bank to be not less than 300mm.
6) number of main steam connection tube bank is a lot, and location in space is limited.Be example with HTR-PM steam generator main steam tube connector, each steam generator has 665 main steam tube connectors, and residing space size is the cylindrical space of the high 2.5m of diameter 2.5m, and this brings very big difficulty for layout and the installation that connects tube bank.
7) axis of steam generator becomes 90 degree with the main line of main steam tube sheet, makes the shape and size of main steam tube connector at diverse location place that difference all be arranged, and this brings very big difficulty for the processing of tube connector.
Owing to have above these technological difficulties and difficulty, need be on the basis of HTR-PM (200,000 ten million HTGRs demonstration power station) steam generator tube connector design, design a kind of steam generator with new main steam tube connector arrangement, can in a technical solution difficult problem, significantly reduce to connect and restrain processing, manufacturing and mounting hardness.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention is that existing main steam connects the technical barrier that runs in tube bank (as the 200000 kilowatts of HTGR demonstration power stations) layout, and the technological difficulties that relate to mainly comprise 7 contents listing in the background technology.
(2) technical scheme
In order to solve the problems of the technologies described above, the invention provides a kind of structural configuration of HTGR steam generator high-temperature steam tube connector, comprising:
Heat insulation layer structure forms the high-temperature space of a primary side media flow, and the low-temperature space in the steam generator and high-temperature region are separated;
Hot gas conduit is the flow channel of a medium of high temperature, and a high-temperature medium is imported to the steam generator from reactor core;
Heat-exchanging tube bundle is used for isolating primary side and secondary side medium, and bears the pressure reduction of both sides, by the tube wall generation primary side medium of heat-exchanging tube bundle and the heat exchange between the secondary side medium;
The main steam header pools together the secondary side medium of various heat exchange pipe and links to each other with steam generator shell by hot jacket sleeve structure;
Main steam connects tube bank, and described heat-exchanging tube bundle and main steam header are coupled together, and plays the thermal compensation effect simultaneously; And
The heat shielding tube, and form a dead gas area between the heat insulation layer structure, the layout that connects tube bank for described main steam provides the space, causes vibration problem with the thermal expansion problem that main steam is connected tube bank with stream and separates.
Preferably, the length unanimity of different steam connection tubes.
Preferably, the top of described main steam header is plane or sphere.
Preferably, the flow media in the described heat-exchanging tube bundle is but is not limited to: high-temperature steam or helium.
Preferably, the arrangement of described heat-exchanging tube bundle includes but not limited to: big coils mode, small coils mode or mid-game tube side formula.
Preferably, described main steam connects tube bank can increase butt weld according to the complexity of actual installation in the centre.
Preferably, described heat insulation layer structure adopts board-like heat insulation layer structure.
Preferably, can open between the cylindrical shell of described heat insulation layer structure and the top cover, can connect by bolt connection or other modes between the two.
Preferably, the bending diameter of described main steam connection tube bank is not less than 300mm.
(3) beneficial effect
HTGR steam generator of the present invention, it connects the tube bank layout can realize that stream causes the decoupling zero of vibration problem and thermal expansion problem, and significantly reduces connection tube bank processing, manufacturing and mounting hardness.
Description of drawings
Fig. 1 is the space layout schematic diagram that the HTGR steam generator main steam of the embodiment of the invention one connects tube bank.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for explanation the present invention, but do not limit the scope of the invention.
As shown in Figure 1, the structural configuration embodiment one of HTGR steam generator high-temperature steam tube connector of the present invention, comprise: heat insulation layer structure 4 forms the high-temperature space of a primary side media flow, and the low-temperature space in the steam generator and high-temperature region is separated; Hot gas conduit 6 is the flow channel of a medium of high temperature, and a high-temperature medium is imported to the steam generator from reactor core, and hot gas conduit 6 (exit portion) links to each other with other parts of hot gas conduit by flange; Heat-exchanging tube bundle 1 is used for isolating primary side and secondary side medium, and bears the pressure reduction of both sides, by the tube wall generation primary side medium of heat-exchanging tube bundle 1 and the heat exchange between the secondary side medium; Main steam header 2 pools together the secondary side medium of various heat exchange pipe and links to each other with steam generator shell by hot jacket sleeve structure; Main steam connects tube bank 3, and described heat-exchanging tube bundle 1 is coupled together with main steam header 2, plays the thermal compensation effect simultaneously; And heat shielding tube 5, and forming a dead gas area between the heat insulation layer structure 4, the layout that connects tube bank 3 for described main steam provides the space, causes vibration problem with the thermal expansion problem that main steam is connected tube bank 3 with stream and separates; So just, thermal expansion problem and stream cause the contradiction between the vibration problem in the time of can overcoming existing steam connection tube bundle and arrange.Owing to be dead space, connect tube bank and when arranging, consider that no longer the stream of primary side medium causes vibration problem, only consider that the compensation of thermal expansion gets final product.Because it is bigger that main steam connects the diameter of restraining the annular space of arranging, is easy to realize the compensation of thermal expansion, and be conducive to carry out in the future the inservice inspection of heat-exchanging tube bundle.
When carrying out steam connection tube bundle layout, must guarantee the length unanimity of different steam connection tubes as much as possible, to reach secondary side medium (as steam) in the purpose of the damping basically identical of tube connector part.The bending diameter that described main steam connects tube bank is not less than 300mm.
The particular location of main steam header and concrete form can change accordingly according to the concrete position of main steam tube connector, both can be the planes such as the top of header, also can be spheres.
Flow media in the heat-exchanging tube bundle both can be high-temperature steam, also can be other temperature flowing medium, as helium etc.The layout of heat-exchanging tube bundle both can be the big coils mode, also can be small coils mode or mid-game tube side formula.
Main steam connects tube bank can increase butt weld according to the degree that is difficult to of actual installation in the centre.
In the present embodiment, heat insulation layer structure adopts board-like heat insulation layer structure.Be openable between cylindrical shell and the top cover, can connect by bolt connection or other modes between the two.
Because the very big space of the inner existence of this heat tube of the arrangement of main steam tube connector, therefore the tube connector according to this programme layout namely can also can integral hoisting arrive steam generator shell inside in the inner installation of steam generator shell after the steam generator shell external mounting is intact.Introduce two kinds of mounting means at this:
1) at the mounting means of steam generator shell inside
When in the inner installation of steam generator shell, must at first heat-exchanging tube bundle 1 be lifted up into the housing of steam generator.If connection tube bank 3 and heat-exchanging tube bundle 1 are one, then connecting tube bank 3 should just should bend according to the shape of reality before heat-exchanging tube bundle 1 is lifted up into steam generator shell, and lifted steam generator shell with heat-exchanging tube bundle 1.If connect between tube bank 3 and the heat-exchanging tube bundle 1 and have weld seam, connect tube bank 3 and also can after heat-exchanging tube bundle 1 is lifted up into steam generator shell, be connected with heat-exchanging tube bundle 1.Then will connect tube bank and 3 be inserted in the tube sheet pore of main steam header 2, at this moment both can advanced line pipe box structure 2 and steam generator shell between welding, carry out main steam header 2 tube sheets then and be connected the expanded joint of restraining between 3; Also can carry out expanded joint between the tube sheet of tube connector bundle 3 and main steam bobbin carriage 2 earlier, and then carry out the welding between main steam header 2 and the steam generator shell.Heat insulation layer structure 4 (top cover of heat insulation layer structure 4 is unkitted) then is installed, simultaneously hot gas conduit 6 (exit portion) other parts with hot gas conduit is connected as a single entity by modes such as flange or welding in installation.Heat shielding tube 5 then is installed, is covered the top cover of heat insulation layer structure 4 at last again.
2) at the mounting means of steam generator shell outside
Relatively simple when the outside installation of steam generator shell, can adopt rational mounting process earlier heat-exchanging tube bundle 1, connection tube bank 3 and main steam bobbin carriage 2 to be linked together.And then heat insulation layer structure 4 is installed and is adorned heat shielding tube 5.Then these parts are done as a whole hanging in the steam generator shell, respectively main steam bobbin carriage 2 and steam generator shell are welded together again, other parts of hot gas conduit 6 (exit portion) and hot gas conduit are connected one.
The above only is preferred embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvement and replacement, these improvement and replacement also should be considered as protection scope of the present invention.
Claims (9)
1. the structural configuration of a HTGR steam generator high-temperature steam tube connector is characterized in that, comprising:
Heat insulation layer structure (4) forms the high-temperature space of a primary side media flow, and the low-temperature space in the steam generator and high-temperature region are separated;
Hot gas conduit (6) is the flow channel of a high-temperature medium, and a high-temperature medium is imported to the steam generator from reactor core;
Heat-exchanging tube bundle (1) is used for isolating primary side medium and secondary side medium, and bears the pressure reduction of both sides, by the tube wall generation primary side medium of heat-exchanging tube bundle (1) and the heat exchange between the secondary side medium;
Main steam header (2) pools together the secondary side medium of various heat exchange pipe and links to each other with steam generator shell by hot jacket sleeve structure;
Main steam connects tube bank (3), and described heat-exchanging tube bundle (1) and main steam header (2) are coupled together, and plays the thermal compensation effect simultaneously; And
Heat shielding tube (5), and form a dead gas area between the heat insulation layer structure (4), the layout that connects tube bank (3) for described main steam provides the space, causes vibration problem with the thermal expansion problem that main steam is connected tube bank (3) with stream and separates.
2. the structural configuration of HTGR steam generator high-temperature steam tube connector as claimed in claim 1 is characterized in that, the length unanimity of different steam connection tubes.
3. the structural configuration of HTGR steam generator high-temperature steam tube connector as claimed in claim 1 is characterized in that, the top of described main steam header (2) is plane or sphere.
4. the structural configuration of HTGR steam generator high-temperature steam tube connector as claimed in claim 1 is characterized in that, the flow media in the described heat-exchanging tube bundle (1) is but is not limited to: high-temperature steam or helium.
5. the structural configuration of HTGR steam generator high-temperature steam tube connector as claimed in claim 1 is characterized in that, the arrangement of described heat-exchanging tube bundle (1) includes but not limited to: big coils mode, small coils mode or mid-game tube side formula.
6. the structural configuration of HTGR steam generator high-temperature steam tube connector as claimed in claim 1 is characterized in that, described main steam connects tube bank (3) can increase butt weld according to the complexity of actual installation in the centre.
7. the structural configuration of HTGR steam generator high-temperature steam tube connector as claimed in claim 1 is characterized in that, described heat insulation layer structure (4) adopts board-like heat insulation layer structure.
8. the structural configuration of HTGR steam generator high-temperature steam tube connector as claimed in claim 7 is characterized in that, can open between the cylindrical shell of described heat insulation layer structure (4) and the top cover, can connect by bolt connection or other modes between the two.
9. the structural configuration of HTGR steam generator high-temperature steam tube connector as claimed in claim 1 is characterized in that, the bending diameter that described main steam connects tube bank (3) is not less than 300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103190080A CN102506409B (en) | 2011-10-19 | 2011-10-19 | Structural arrangement of high-temperature steam connecting pipe of steam generator of gas cooled reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103190080A CN102506409B (en) | 2011-10-19 | 2011-10-19 | Structural arrangement of high-temperature steam connecting pipe of steam generator of gas cooled reactor |
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| Publication Number | Publication Date |
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| CN102506409A CN102506409A (en) | 2012-06-20 |
| CN102506409B true CN102506409B (en) | 2013-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103190080A Active CN102506409B (en) | 2011-10-19 | 2011-10-19 | Structural arrangement of high-temperature steam connecting pipe of steam generator of gas cooled reactor |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105823034A (en) * | 2016-06-02 | 2016-08-03 | 哈电集团（秦皇岛）重型装备有限公司 | Single-pipe passing connection structure for water supply connecting pipe of high-temperature gas cooled reactor steam generator |
| CN105841132B (en) * | 2016-06-02 | 2018-09-11 | 哈电集团（秦皇岛）重型装备有限公司 | The single poling connection structure of temperature gas cooled reactor steam generator steam (vapor) outlet connecting tube |
| CN106949453A (en) * | 2017-05-05 | 2017-07-14 | 哈电集团（秦皇岛）重型装备有限公司 | Temperature gas cooled reactor steam generator steam (vapor) outlet connecting pipe structure |
| CN107631848A (en) * | 2017-09-26 | 2018-01-26 | 上海核工程研究设计院有限公司 | A kind of steam generator heat-transfer pipe line causes vibration testing device |
| CN113205894B (en) * | 2021-04-29 | 2022-08-02 | 西安热工研究院有限公司 | High-temperature gas cooled reactor primary loop device |
| CN113970093B (en) * | 2021-10-15 | 2024-03-26 | 西安热工研究院有限公司 | Multistage U-shaped pipe horizontal high-temperature gas cooled reactor steam generator |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3012596A1 (en) * | 1980-04-01 | 1981-10-08 | Hochtemperatur-Reaktorbau GmbH, 5000 Köln | Heat exchanger esp. steam generator for gas cooled reactor - has helical tube bundle in annular space with central steam outlet duct |
| DE3038239A1 (en) * | 1980-10-10 | 1982-05-19 | Hochtemperatur-Reaktorbau GmbH, 5000 Köln | Steam generator for gas cooled reactor housed in pod - of pressure vessel has straight tubes with inclined compensator tubes in zone free of gas flow |
| DE3822212C1 (en) * | 1988-07-01 | 1989-11-16 | Hochtemperatur-Reaktorbau Gmbh, 4600 Dortmund, De | Nuclear reactor installation consisting of a high-temperature small reactor, a helium/helium heat exchanger and a helium/water heat exchanger |
| US5335252A (en) * | 1993-10-18 | 1994-08-02 | Kaufman Jay S | Steam generator system for gas cooled reactor and the like |
| CN101714413B (en) * | 2009-12-23 | 2012-07-25 | 清华大学 | High-temperature gas cooled reactor steam generating system and method |
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Inventor after: Luo Xiaowei Inventor after: Wu Shenxin Inventor after: He Shuyan Inventor after: Zhang Zuoyi Inventor after: Wu Zongxin Inventor before: Luo Xiaowei Inventor before: Wu Xinshen Inventor before: He Shuyan Inventor before: Zhang Zuoyi Inventor before: Wu Zongxin |
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