CN203026164U - Vertical connection type surge pipe for voltage stabilizer of pressurized water reactor nuclear power plant - Google Patents
Vertical connection type surge pipe for voltage stabilizer of pressurized water reactor nuclear power plant Download PDFInfo
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- CN203026164U CN203026164U CN2012206672352U CN201220667235U CN203026164U CN 203026164 U CN203026164 U CN 203026164U CN 2012206672352 U CN2012206672352 U CN 2012206672352U CN 201220667235 U CN201220667235 U CN 201220667235U CN 203026164 U CN203026164 U CN 203026164U
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- voltage stabilizer
- nuclear power
- surge pipe
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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
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model relates to the technology of nuclear power, and in particular discloses a vertical connection type surge pipe for a voltage stabilizer of a pressurized water reactor nuclear power plant. The vertical connection type surge pipe comprises a vertical section I, a vertical section II and an extension section between the vertical section I and the vertical section II, wherein the vertical section I is vertically connected outside from the top part of a main loop pipeline; the vertical section II is vertically connected upwards with the bottom of a voltage stabilizer; and the extension section extends upwards at an elevation angle of 2-5 degrees with the horizontal plane. By using the designed vertical sections, the surge pipe is vertically connected outside from a main pipeline, so that the thermal stratification influence on a welding line of a filler neck of the surge pipe on the main pipeline is avoided; and as the extension section in the middle section of the surge pipe extends upwards at the elevation angle of 2-5 degrees, the influence of the thermal stratification effect on the welding line is effectively relieved.
Description
Technical field
The utility model belongs to the nuclear power technology field, is specifically related to a kind of Pressurizer surge line.
Background technology
The hot arc of Pressurizer surge line (hereinafter to be referred as a fluctuation pipe) loop of a termination reactor coolant loop, another termination lower seal head of voltage stabilizer, carry reactor coolant under high temperature, high pressure and hot condition, and consist of the pressure boundary together with miscellaneous equipment and pipeline, be one of most important pipeline in reactor coolant loop.
In the PWR nuclear power plant operational process, because the coolant temperature in voltage stabilizer is higher than the temperature in reactor coolant loop, under power plant's steady state operating condition, low from the coolant temperature of reactor coolant loop, density is large, occupies the bottom of fluctuation pipe; Coolant temperature from voltage stabilizer is high, density is little, occupies the top of fluctuation pipe.On engineering, above-mentioned phenomenon is called fluctuation pipe thermal stratification.At present PWR nuclear power plant fluctuation pipe generally adopts arrangement near level (elevation angle only 17 '), therefore there is serious thermal stratification on its pipeline radial section, fluctuation tube body and crucial weld seam thereof (the particularly weld seam of fluctuation pipe and major loop junction) are caused serious thermal stress impact.Fluctuation pipe thermal stratification is one of factor that threatens power plant safety always, is also State Bureau of Nuclear Safety's outline problem.Interim in mountain range Australia one, fluctuation pipe fatigue accumulation usage factor is near limit value.
Summary of the invention
The purpose of this utility model is to provide the vertical interconnection system of a kind of pressurized-water reactor nuclear power plant voltage stabilizer fluctuation pipe, when it can voltage stabilizer effectively be communicated with major loop, alleviates effectively that thermal stratification is managed fluctuating and the impact at trunk line pressure inlet place.
Realize that the technical solution of the utility model is as follows:
The vertical interconnection system fluctuation of a kind of pressurized-water reactor nuclear power plant voltage stabilizer pipe, it comprises vertical section I, vertical section II, and above-mentioned between the two extension, described vertical section I picks out from the top vertical of major loop pipeline, described vertical section II is connected bottom voltage stabilizer straight up, and described extension extends upward horizontal by 2 ~ 5 ° of elevations angle.
In the vertical interconnection system fluctuation of above-mentioned pressurized-water reactor nuclear power plant voltage stabilizer pipe: described extension is comprised of straight length, bending section I, bending section II and semi-circular segments; One end of described straight length is connected with the top vertical of major loop pipeline, and the other end of straight length is connected with the bending section I; Described semi-circular segments is between bending section I and bending section II; One end of described bending section II is connected bottom voltage stabilizer straight up, and the other end of bending section II is connected with semi-circular segments.
The obtained beneficial effect of the utility model is as follows: utilize vertical section of design to make the fluctuation pipe vertically pick out from trunk line, make and do not have the thermally stratified layer impact on the surge ozzle weld seam on trunk line; The extension of fluctuation pipe interlude adopts 2 ~ 5 ° of inclination angles to extend upward, and has effectively alleviated the impact of thermomixture effect on this section weld seam.
Description of drawings
Fig. 1 is the vertical interconnection system fluctuation of pressurized-water reactor nuclear power plant voltage stabilizer pipe side view;
Fig. 2 is the vertical view of Fig. 1;
In figure: 1. vertical section I; 2. vertical section II; 3. extension; 301. straight length; 302. semi-circular segments; 303. bending section I; 304. bending section II.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
As shown in Figure 1, the fluctuation pipe comprises two sections vertically sections, vertically section I 1 and vertically section II 2, also comprise two sections vertically extensions 3 between section 1 and 2, vertically section I 1 picks out from the top vertical of major loop pipeline, therefore can there be thermal stratification on the section of weld joint at this place, thereby can guarantees that trunk line is connected safety and the operation life of rear operation with this place.Another vertical section II 2 is connected bottom voltage stabilizer straight up, realizes the UNICOM of major loop and voltage stabilizer.
Vertically the extension between section 1 and 23 is 2.5 ° of elevations angle with the surface level optimal selection, and bending extensions that be inclined upwardly keeps the angle of inclination, and the gradient enough can effectively be controlled greatly thermal stratification to the impact of the extension 3 of the pipe that fluctuates.
In this enforcement, a kind of optimal form has been adopted in the design of extension 3, as shown in Figure 2, extension 3 is comprised of four parts, straight length 301, bending section I 303 and bending section II 304, and 302, four parts of the semi-circular segments between bending section I 303 and bending section II 304 have formed a kind of pipeline section of the Ω of being similar to shape.
Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the utility model.If these are revised and within modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model also is intended to comprise these changes and modification interior.
Claims (2)
1. the vertical interconnection system fluctuation of pressurized-water reactor nuclear power plant voltage stabilizer is managed, it is characterized in that: it comprises vertical section I (1), vertical section II (2), and above-mentioned between the two extension (3), described vertical section I (1) picks out from the top vertical of major loop pipeline, described vertical section II (2) is connected bottom voltage stabilizer straight up, and described extension (3) extend upward horizontal by 2 ~ 5 ° of elevations angle.
2. the vertical interconnection system fluctuation of pressurized-water reactor nuclear power plant voltage stabilizer as claimed in claim 1 is managed, and it is characterized in that: described extension (3) are comprised of straight length (301), bending section I (303), bending section II (304) and semi-circular segments (302); One end of described straight length (301) is connected with the top vertical of major loop pipeline, and the other end of straight length (301) is connected with bending section I (303); Described semi-circular segments (302) is positioned between bending section I (303) and bending section II (304); One end of described bending section II (304) is connected bottom voltage stabilizer straight up, and the other end of bending section II (304) is connected with semi-circular segments (302).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206672352U CN203026164U (en) | 2012-12-06 | 2012-12-06 | Vertical connection type surge pipe for voltage stabilizer of pressurized water reactor nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206672352U CN203026164U (en) | 2012-12-06 | 2012-12-06 | Vertical connection type surge pipe for voltage stabilizer of pressurized water reactor nuclear power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203026164U true CN203026164U (en) | 2013-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206672352U Expired - Lifetime CN203026164U (en) | 2012-12-06 | 2012-12-06 | Vertical connection type surge pipe for voltage stabilizer of pressurized water reactor nuclear power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203026164U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103854709A (en) * | 2012-12-06 | 2014-06-11 | 中国核动力研究设计院 | Vertical connection type surge pipe for pressurized water reactor nuclear power plant voltage stabilizer |
| CN103982706A (en) * | 2014-05-20 | 2014-08-13 | 中国核工业二三建设有限公司 | Method used for mounting nuclear power plant voltage stabilizer surge pipe |
-
2012
- 2012-12-06 CN CN2012206672352U patent/CN203026164U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103854709A (en) * | 2012-12-06 | 2014-06-11 | 中国核动力研究设计院 | Vertical connection type surge pipe for pressurized water reactor nuclear power plant voltage stabilizer |
| WO2014086274A1 (en) * | 2012-12-06 | 2014-06-12 | 中国核动力研究设计院 | Vertical connection type surge pipe for voltage stabilizer of pressurized water reactor nuclear power plant |
| GB2523706A (en) * | 2012-12-06 | 2015-09-02 | Nuclear Power Inst China | Vertical connection type surge pipe for voltage stabilizer of pressurized water reactor nuclear power plant |
| GB2523706B (en) * | 2012-12-06 | 2017-12-06 | Nuclear Power Inst China | Vertical connection type surge pipe for pressurizer of pressurized water reactor nuclear power plant |
| CN103982706A (en) * | 2014-05-20 | 2014-08-13 | 中国核工业二三建设有限公司 | Method used for mounting nuclear power plant voltage stabilizer surge pipe |
| CN103982706B (en) * | 2014-05-20 | 2016-05-04 | 中国核工业二三建设有限公司 | It is a kind of for the method for nuclear power plant's Pressurizer surge line is installed |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130626 |