CN103791748A - Safety type steam generator heat exchanger pipeline structure - Google Patents
Safety type steam generator heat exchanger pipeline structure Download PDFInfo
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- CN103791748A CN103791748A CN201410022642.1A CN201410022642A CN103791748A CN 103791748 A CN103791748 A CN 103791748A CN 201410022642 A CN201410022642 A CN 201410022642A CN 103791748 A CN103791748 A CN 103791748A
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- pipe
- steam generator
- inner tube
- heat exchanger
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Abstract
The invention relates to the technical field of steam generators, in particular to a safety type steam generator heat exchanger pipeline structure. The safety type steam generator heat exchanger pipeline structure comprises an inner pipe, and further comprises an outer pipe, a lower supporting plate and an upper supporting plate, the outer pipe is connected with the outer side of the inner pipe in a sleeved mode, the lower supporting plate is arranged at the lower ends of the outer pipe and the inner pipe, the upper supporting plate is arranged at the top ends of the outer pipe and the inner pipe, a pipe opening of the bottom end of the outer pipe is flush with a pipe opening of the bottom end of the inner pipe, the pipe opening of the top end of the inner pipe is higher than a pipe opening of the top end of the outer pipe, the higher part of the pipe opening of the top end of the inner pipe extends to form a cylindrical protrusion side, the lower side of the cylindrical protrusion side and a pipe opening of the outer pipe form a U-type groove, and the upper supporting plate is fixed in the U-type groove through a welding structure. According to the technical scheme, the safety type steam generator heat exchanger pipeline structure has the advantages of being easy to machine, convenient to implement, and capable of effectively improving safe reliability of the steam generator, can timely achieve alarming in advance, and prevents serious safety accidents from happening.
Description
Technical field
The present invention relates to steam generator technical field, refer to especially a kind of safety type steam generator heat exchanger tube structure.
Background technology
In recent years, steam generator is one of key equipment of heat-shift, one of the maximum equipment that simultaneously has an accident in Ye Shi thermal power plant, nuclear power plant, steam generator pipe, owing to being subject to impact and the HTHP effect of inside and outside different quality simultaneously, is weakest link in safety in production.Up to the present, nearly all steam generator heat exchange tube road is all single layer structure, usually there is stress corrosion and microseism wearing and tearing equivalent damage form in the heat exchange pipeline of this steam generation, once and generation pipeline perforate defect, if can not find in time, just likely make the unexpected fracture of pipeline, finally probably bring out serious loss of-coolant accident (LOCA), the serious safe and reliable operation that is threatening thermal power plant and nuclear power plant.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of safety type steam generator heat exchanger tube structure, design not only and can find in time the defect of pipeline and the size of defect by pressure sensor and liquid trap by double-decker, even if one deck pipeline failure wherein, can not make pipeline break at short notice yet, thereby the plugging measure of employing necessity that can be calm, thereby the safe and reliable operation of the equipment of assurance.
For solving the problems of the technologies described above, embodiments of the invention provide a kind of safety type steam generator heat exchanger tube structure, comprise inner tube, also comprise the outer tube that is socketed on inner tube outside, be located at the lower supporting plate of outer tube and inner tube lower end, be located at the upper backup pad on outer tube and inner tube top; The mouth of pipe of described outer tube bottom flushes with the mouth of pipe of inner tube bottom, the mouth of pipe on described inner tube top is higher than the mouth of pipe on outer tube top, the mouth of pipe the raised area extension of described inner tube top is provided with cylindrical chimb, described cylindrical chimb downside and the outer tube mouth of pipe form U-shaped groove, and described upper backup pad is fixed in U-shaped groove by Welding Structure.
As preferably, described outer wall of inner tube is radially provided with semi-circular grooves, the notch place of described semi-circular grooves bottom is provided with liquid trap by bolt, described semi-circular grooves forms a seal cavity by Welding Structure and liquid trap, and described liquid trap is provided with the pressure sensor for detection of semi-circular grooves internal pressure.
As preferably, upper backup pad and lower supporting plate are equipped with blossom type perforate.
The beneficial effect of technique scheme of the present invention is as follows: processing is simple, convenient enforcement, pipeline is divided into inner and outer tubes, have on inner pipe semi-circular grooves, even if there is fracture and lost efficacy in one deck pipeline so wherein, also whole steam generator is not affected, can effectively improve the security reliability of steam generator, inner tube leaves semicircle linear type groove, once outer tube or inner tube are broken or are leaked, first liquid be left in semi-circular grooves by small space, utilize at the semicircle linear pattern tapping of duct bottom pressure sensor and liquid trap are installed, can realize and giving warning in advance timely, prevent the generation of serious accident.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the upper part structure cutaway view of Fig. 1.
Fig. 3 is the top view of Fig. 1.
Fig. 4 is pressure sensor and liquid trap connection diagram.
Reference numeral: 1, inner tube; 2, semi-circular grooves; 3, bolt; 4, liquid trap; 5, pressure sensor; 6, Welding Structure; 7, outer tube; 8, upper backup pad; 9, lower supporting plate; 10, blossom type perforate; 11, cylindrical chimb.
The specific embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
The present invention is directed to existing deficiency a kind of safety type steam generator heat exchanger tube structure is provided, as depicted in figs. 1 and 2, comprise inner tube 1, also comprise the outer tube 7 that is socketed on inner tube outside, be located at the lower supporting plate 9 of outer tube and inner tube lower end, be located at the upper backup pad 8 on outer tube and inner tube top; The mouth of pipe of described outer tube bottom flushes with the mouth of pipe of inner tube bottom, the mouth of pipe on described inner tube top is higher than the mouth of pipe on outer tube top, the mouth of pipe the raised area extension of described inner tube top is provided with cylindrical chimb 11, described cylindrical chimb downside and the outer tube mouth of pipe form U-shaped groove, and described upper backup pad is fixed in U-shaped groove by Welding Structure 6.
As shown in Figure 4, described outer wall of inner tube is radially provided with semi-circular grooves 2, the notch place of described semi-circular grooves bottom is provided with liquid trap 4 by bolt 3, described semi-circular grooves forms a seal cavity by Welding Structure and liquid trap, and described liquid trap is provided with the pressure sensor 5 for detection of semi-circular grooves internal pressure.
As shown in Figure 3, upper backup pad and lower supporting plate are equipped with blossom type perforate 10.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1. a safety type steam generator heat exchanger tube structure, comprises inner tube, it is characterized in that, also comprises the outer tube that is socketed on inner tube outside, is located at the lower supporting plate of outer tube and inner tube lower end, is located at the upper backup pad on outer tube and inner tube top; The mouth of pipe of described outer tube bottom flushes with the mouth of pipe of inner tube bottom, the mouth of pipe on described inner tube top is higher than the mouth of pipe on outer tube top, the mouth of pipe the raised area extension of described inner tube top is provided with cylindrical chimb, described cylindrical chimb downside and the outer tube mouth of pipe form U-shaped groove, and described upper backup pad is fixed in U-shaped groove by Welding Structure.
2. a kind of safety type steam generator heat exchanger tube structure according to claim 1, it is characterized in that, described outer wall of inner tube is radially provided with semi-circular grooves, the notch place of described semi-circular grooves bottom is provided with liquid trap by bolt, described semi-circular grooves forms a seal cavity by Welding Structure and liquid trap, and described liquid trap is provided with the pressure sensor for detection of semi-circular grooves internal pressure.
3. a kind of safety type steam generator heat exchanger tube structure according to claim 1, is characterized in that, upper backup pad and lower supporting plate are equipped with blossom type perforate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410022642.1A CN103791748B (en) | 2014-01-11 | 2014-01-11 | A kind of safety type steam generator heat exchanger tube structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410022642.1A CN103791748B (en) | 2014-01-11 | 2014-01-11 | A kind of safety type steam generator heat exchanger tube structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103791748A true CN103791748A (en) | 2014-05-14 |
| CN103791748B CN103791748B (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410022642.1A Expired - Fee Related CN103791748B (en) | 2014-01-11 | 2014-01-11 | A kind of safety type steam generator heat exchanger tube structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN103791748B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104239592A (en) * | 2014-05-26 | 2014-12-24 | 阳江核电有限公司 | Excel-based tube plate diagram generating method during nuclear power steam generator heat exchanging pipe detection |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63199017A (en) * | 1987-02-10 | 1988-08-17 | Ishikawajima Harima Heavy Ind Co Ltd | Manufacture of heat transfer pipe for steam generator |
| JPH01142392A (en) * | 1987-11-30 | 1989-06-05 | Babcock Hitachi Kk | Double tube type heat transfer tube |
| JPH0694383A (en) * | 1992-09-11 | 1994-04-05 | Mitsubishi Heavy Ind Ltd | Double tube type sea-water introduction tube for sea-water heat exchanger |
| JPH09119791A (en) * | 1995-10-25 | 1997-05-06 | Toshiba Corp | Double heat transfer tube for vapor generator and manufacture thereof |
| CN1378638A (en) * | 1999-07-22 | 2002-11-06 | 施皮罗研究公司 | Method for manufacturing double-walled heat exchanging tube with leak detection and said heat exchanging tube |
| CN201034425Y (en) * | 2007-04-19 | 2008-03-12 | 钟雪莲 | Double-walled cannula exchanger |
| CN201476634U (en) * | 2009-08-18 | 2010-05-19 | 成都瑞奇石油化工工程有限公司 | Double tube plate structure of shell-and-tube heat exchanger |
| CN201548109U (en) * | 2009-11-26 | 2010-08-11 | 基伊埃工业热交换器系统(芜湖)有限公司 | Heat exchanging tube for tube-fin radiator |
-
2014
- 2014-01-11 CN CN201410022642.1A patent/CN103791748B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63199017A (en) * | 1987-02-10 | 1988-08-17 | Ishikawajima Harima Heavy Ind Co Ltd | Manufacture of heat transfer pipe for steam generator |
| JPH01142392A (en) * | 1987-11-30 | 1989-06-05 | Babcock Hitachi Kk | Double tube type heat transfer tube |
| JPH0694383A (en) * | 1992-09-11 | 1994-04-05 | Mitsubishi Heavy Ind Ltd | Double tube type sea-water introduction tube for sea-water heat exchanger |
| JPH09119791A (en) * | 1995-10-25 | 1997-05-06 | Toshiba Corp | Double heat transfer tube for vapor generator and manufacture thereof |
| CN1378638A (en) * | 1999-07-22 | 2002-11-06 | 施皮罗研究公司 | Method for manufacturing double-walled heat exchanging tube with leak detection and said heat exchanging tube |
| CN201034425Y (en) * | 2007-04-19 | 2008-03-12 | 钟雪莲 | Double-walled cannula exchanger |
| CN201476634U (en) * | 2009-08-18 | 2010-05-19 | 成都瑞奇石油化工工程有限公司 | Double tube plate structure of shell-and-tube heat exchanger |
| CN201548109U (en) * | 2009-11-26 | 2010-08-11 | 基伊埃工业热交换器系统(芜湖)有限公司 | Heat exchanging tube for tube-fin radiator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104239592A (en) * | 2014-05-26 | 2014-12-24 | 阳江核电有限公司 | Excel-based tube plate diagram generating method during nuclear power steam generator heat exchanging pipe detection |
| CN104239592B (en) * | 2014-05-26 | 2017-09-22 | 阳江核电有限公司 | Tube sheet drawing generating method when nuclear steam generator heat exchanger tube based on Excel is detected |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103791748B (en) | 2015-09-09 |
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Granted publication date: 20150909 Termination date: 20170111 |
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