CN103471446A - Moisture separator reheater tube bundle side plate capable of freely carrying out thermal expansion - Google Patents
Moisture separator reheater tube bundle side plate capable of freely carrying out thermal expansion Download PDFInfo
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- CN103471446A CN103471446A CN2013104356966A CN201310435696A CN103471446A CN 103471446 A CN103471446 A CN 103471446A CN 2013104356966 A CN2013104356966 A CN 2013104356966A CN 201310435696 A CN201310435696 A CN 201310435696A CN 103471446 A CN103471446 A CN 103471446A
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- side plate
- tube bundle
- moisture separator
- weld seam
- tube bank
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Abstract
The invention discloses a moisture separator reheater tube bundle side plate capable of freely carrying out thermal expansion and relates to a moisture separator reheater tube bundle side plate. The invention solves the problem of deformation of a supporting structure and a tube bundle, which is caused by serious overcooling of the bottom half part of a U-shaped tube. The side plate comprises a plurality of sub plate bodies; the sub plate bodies are welded into one whole body; a weld joint is formed between every two sub plate bodies; and each weld joint is a tooth-shaped weld joint. The moisture separator reheater tube bundle side plate is used for a moisture separator reheater of a steam turboset.
Description
Technical field
The present invention relates to a kind of separator tube bank side plate.
Background technology
Existing nuclear power station saturated steam turbine group all will configure separator (MSR) equipment.MSR receives the steam discharge from steam turbine high-pressure cylinder, removes the moisture in moist steam and carries out heat again, then drains into turbine low pressure cylinder.Can significantly improve the power of unit through hot again steam, increase the economy of unit.
In the process of MSR reheater heating, the heating steam generation condensation in reheater U-shaped pipe, transfer heat to the outer heated steam of pipe.Along with condensation process constantly develops, in pipe, the mass dryness fraction of heating steam constantly reduces, to a certain degree the time heating steam become saturated liquid fully, along with heat exchange is further carried out, saturated liquid gradually becomes again supercooled state, until flow out heat exchanger tube.
Intrafascicular at the MSR reheater tube, the heating steam surfusion often occurs, and the part that surfusion easily occurs is the latter half of U-shaped tube bank.When there is subcooled liquid in U-shaped tube bank the latter half and U-shaped tube bank the first half when having saturated vapor, the thermal expansions of these two parts that are connected are obviously different.Because tube bank is fixed by the tube bundle support structure, by U-shaped upper the latter half thermal expansion is different, thermal stress that cause can cause compression or the stretcher strain of supporting construction and tube bank, can cause the heating steam bypass when serious, the damage of tube bank bending and tube bank and supporting construction, as shown in Figure 1.
Therefore, as the support fixed structure of tube bank, how reheater tube bank side plate avoids the negative effect that tube bundle heat stress brings is vital to the MSR overall performance.
Summary of the invention
The present invention avoids the serious excessively cold problem that causes the distortion of supporting construction and tube bank of U-shaped pipe the latter half in order to solve, and a kind of separator tube bank side plate is provided.
The present invention solves the problems of the technologies described above the technical scheme of taking to be: described side plate comprises a plurality of minutes plate bodys, and one is made in plate body welding in a plurality of minutes, between every two minutes plate bodys, forms weld seam, and weld seam is the profile of tooth weld seam.
The present invention has advantages of following beneficial effect: but the present invention has free wxpansion, the stress influence that is not heated, simple in structure, be convenient to processing.When surfusion appears in U-shaped pipe the latter half, due to the different thermal stress that cause of U-shaped upper the latter half thermal expansion, profile of tooth weld seam in the tube bank side plate can deform, thereby balance out the caused variation of thermal stress, the variation of shape just can not occur in reheater tube bank side plate like this, makes separator tube bank side plate of the present invention can effectively avoid the phenomenon that causes the supporting construction distortion because the serious mistake of U-shaped pipe the latter half is cold to occur.
The accompanying drawing explanation
Fig. 1 is the structural representation (upper U-shaped pipe 4, lower U-shaped pipe 5, heavily stressed weld seam 6, gripper shoe 7 and side plate 10) of existing separator tube bank side plate, and Fig. 2 is structural representation of the present invention.
The specific embodiment
The specific embodiment one: in conjunction with Fig. 2, present embodiment is described, the side plate of present embodiment comprises a plurality of minutes plate bodys 1, and one is made in plate body 1 welding in a plurality of minutes, forms weld seam 2 between every two minutes plate bodys 1, and weld seam 2 is the profile of tooth weld seam.
The specific embodiment two: in conjunction with Fig. 2, present embodiment is described, the width of the weld seam 2 of present embodiment is 10mm, and the welding of this structure is more firm, is difficult for snapping.Other embodiment is identical with the specific embodiment one.
The specific embodiment three: in conjunction with Fig. 2, present embodiment is described, each of present embodiment minute plate body 1 is carbon steel sheet, the supporting the use for heat exchanger tube of this structure.Other embodiment is identical with the specific embodiment one.
The specific embodiment four: in conjunction with Fig. 2, present embodiment is described, the top and bottom of the weld seam 2 of present embodiment are solder joint 3, and the welding of this structure is more firm, is difficult for snapping.Other embodiment is identical with the specific embodiment one.
Operation principle: reheater tube bank side plate of the present invention adopts the mode of plate body 1 welding in a plurality of minutes, divide between plate body 1 and welded at weld seam 2 places, due to the different thermal stress that cause of U-shaped upper the latter half thermal expansion, the profile of tooth weld seam can deform, thereby balance out the caused variation of thermal stress, the variation of shape just can not occur in reheater tube bank side plate like this, makes separator tube bank side plate of the present invention can effectively avoid the phenomenon that causes the supporting construction distortion because the serious mistake of U-shaped pipe the latter half is cold to occur.
Claims (4)
1. but the separator of a Free Thermal expansion is restrained side plate, it is characterized in that described side plate comprises a plurality of minutes plate bodys (1), one is made in the welding of a plurality of minutes plate bodys (1), between every two minutes plate body (1), forms weld seam (2), and weld seam (2) is the profile of tooth weld seam.
2. the separator tube bank side plate that but Free Thermal expands according to claim 1, the width that it is characterized in that weld seam (2) is 10mm.
But 3. the separator expanded according to the described Free Thermal of claim 1 or 2 tube bank side plate, it is characterized in that each minute plate body (1) be carbon steel sheet.
4. but the separator tube bank side plate expanded according to the described Free Thermal of claim 1 or 2, the top and bottom that it is characterized in that weld seam (2) are solder joint (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104356966A CN103471446A (en) | 2013-09-23 | 2013-09-23 | Moisture separator reheater tube bundle side plate capable of freely carrying out thermal expansion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104356966A CN103471446A (en) | 2013-09-23 | 2013-09-23 | Moisture separator reheater tube bundle side plate capable of freely carrying out thermal expansion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103471446A true CN103471446A (en) | 2013-12-25 |
Family
ID=49796401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104356966A Pending CN103471446A (en) | 2013-09-23 | 2013-09-23 | Moisture separator reheater tube bundle side plate capable of freely carrying out thermal expansion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103471446A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2547217A1 (en) * | 1975-10-22 | 1977-05-05 | Daimler Benz Ag | Heat exchanger with U:tube cluster - has split stabilising plate slotted to prevent tube distortion damage |
| CN1375050A (en) * | 1999-06-09 | 2002-10-16 | 斯科茨曼集团公司 | Evaporator plate assembly for use in a machine for producing ice |
| CN1668411A (en) * | 2002-07-17 | 2005-09-14 | 国际壳牌研究有限公司 | Forge welding of heavy duty tubulars |
| CN203479131U (en) * | 2013-09-23 | 2014-03-12 | 哈尔滨汽轮机厂辅机工程有限公司 | Moisture separator reheater pipe bundle side plate capable of achieving free thermal expansion |
-
2013
- 2013-09-23 CN CN2013104356966A patent/CN103471446A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2547217A1 (en) * | 1975-10-22 | 1977-05-05 | Daimler Benz Ag | Heat exchanger with U:tube cluster - has split stabilising plate slotted to prevent tube distortion damage |
| CN1375050A (en) * | 1999-06-09 | 2002-10-16 | 斯科茨曼集团公司 | Evaporator plate assembly for use in a machine for producing ice |
| CN1668411A (en) * | 2002-07-17 | 2005-09-14 | 国际壳牌研究有限公司 | Forge welding of heavy duty tubulars |
| CN203479131U (en) * | 2013-09-23 | 2014-03-12 | 哈尔滨汽轮机厂辅机工程有限公司 | Moisture separator reheater pipe bundle side plate capable of achieving free thermal expansion |
Non-Patent Citations (1)
| Title |
|---|
| 何大波: "岭澳核电站常规岛MSR的国内研制", 《压力容器》 * |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131225 |