CN206861492U - A kind of presurized water reactor steam generator with horizontal supporting connecting plate - Google Patents
A kind of presurized water reactor steam generator with horizontal supporting connecting plate Download PDFInfo
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- CN206861492U CN206861492U CN201720743749.4U CN201720743749U CN206861492U CN 206861492 U CN206861492 U CN 206861492U CN 201720743749 U CN201720743749 U CN 201720743749U CN 206861492 U CN206861492 U CN 206861492U
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- horizontal supporting
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Abstract
The utility model discloses a kind of presurized water reactor steam generator with horizontal supporting connecting plate, including housing, enclosure interior includes the heat exchanging part of bottom and the water separator part on top, the middle part outer wall of housing is provided with horizontal supporting mechanism, horizontal supporting mechanism includes 4 horizontal supporting attachment structures, one group two-by-two of 4 horizontal supporting attachment structures, every group is symmetrical set with the axle of housing, one of which is arranged in the thermal expansion azimuth axis of housing, the each horizontal supporting attachment structure of the group is made up of 2 to 6 horizontal supporting connecting plates, and for connecting 1 to 3 damper, another group and angle of the thermal expansion azimuth axis formation less than 90 ° of housing, the each horizontal supporting attachment structure of the group is made up of 2 to 4 horizontal supporting connecting plates, and for connecting 1 to 2 push-and-pull rod.The utility model is simple in construction, reliable design, and by the design of horizontal supporting mechanism, the design can make steam generator have more preferable anti-seismic performance.
Description
Technical field
It the utility model is related to PWR nuclear power plant (to stand) design field, and in particular to one kind connects with horizontal supporting
The presurized water reactor steam generator of fishplate bar.
Background technology
Steam generator is one of most important equipment of pressurized-water reactor nuclear power plant, and it has following function：
1. reactor coolant is produced into flow, pressure from the heat transfer that reactor core is taken out of to secondary side working media (water)
Power and the satisfactory saturated vapor of humidity, driving steam turbine generate electricity；
2. using tube sheet and U-tube tube wall as barrier, isolate the working media of first and second side, anti-stop-band is radioactive once
Side working media enters secondary side, pollution secondary coolant circuit system；
3. under normal shutdown cooling and some accident conditionses, the Decay afterheat of reactor core is exported, protects reactor safety.
Steam generator mainly includes A types steam generator and Type B steam generator, and A types steam generator has outlet
The shortcomings that steam pressure is relatively low, projected life is shorter, shock resistance is relatively low, Type B steam generator exist outlet vapor pressure compared with
Low, the defects of outlet vapor humidity is higher, employs three levels support, complicated, and in-site installation is difficult larger.
Utility model content
The purpose of this utility model is to provide a kind of presurized water reactor steam generator with horizontal supporting connecting plate, is somebody's turn to do
Steam generator is simple in construction, reliable design, passes through the design of horizontal supporting connecting plate, it is possible to increase the antidetonation of steam generator
Performance.
The utility model is achieved through the following technical solutions：
A kind of presurized water reactor steam generator with horizontal supporting connecting plate, including housing, enclosure interior include bottom
Heat exchanging part and top water separator part, the middle part outer wall of the housing is provided with horizontal supporting mechanism, described
Horizontal supporting mechanism includes 4 horizontal supporting attachment structures, and one group two-by-two of 4 horizontal supporting attachment structures, every group with housing
Axle is symmetrical set, and one of which is arranged in the thermal expansion azimuth axis of housing, and each horizontal supporting attachment structure of the group is by 2
Formed to 6 horizontal supporting connecting plates, and for connecting 1 to 3 damper, the thermal expansion axis of orientation of another group and housing is linear
Into the angle less than 90 °, each horizontal supporting attachment structure of the group is made up of 2 to 4 horizontal supporting connecting plates, and for connecting
1 to 2 push-and-pull rod.
Existing steam generator mainly includes A types steam generator and Type B steam generator, the support of A types steam generator
Using ring structure is embraced, gap between ring and steam generator inevitably be present due to embracing, cause A type steam generator antidetonation energy
Power is relatively low, projected life is shorter.Type B steam generator employs three levels support, though solved using bearing pin connected mode
Clearance issues between supporting and steam generator, but it is complicated, and in-site installation is difficult.
The application is optimized and improved on the basis of existing two kinds of steam generators, has steam generator
More preferable anti-seismic performance.
In normal conditions, steam generator upper level supporting structure can provide supporting for steam generator, bear
Bearing load under different operating modes.
During steam generator in-site installation described in the utility model, it will be arranged in steam generator thermal expansion azimuth axis
Connecting plate be connected by ball bearing with damper, another group of connecting plate is connected by ball bearing with push-and-pull rod.
The utility model is simple in construction, reliable design, by the design of horizontal supporting mechanism, can limit steam generator and hang down
Directly in the displacement in main pipe hot leg direction, but allow displacement of the steam generator along main pipe hot leg direction.Damper axis with
Main pipe hot leg is parallel, can limit steam generator sudden displacement caused by earthquake or pipeline break, but allow due to
Slow displacement caused by the thermal expansion of loop, and then the design can make steam generator have more preferable anti-seismic performance.
Further, heat exchanging part includes tube sheet, and U heat exchange, which is stood upside down, to be arranged on tube sheet, and the heat exchanging part is also wrapped
Include the survey time entrance for being arranged on housing bottom and one and survey time outlet.
Further, the bending section of U heat exchange is provided with multigroup vibrationproof bar.
Preferably, vibrationproof bar is provided with 3~5 groups.
The setting of vibrationproof bar can effectively prevent because machinery or flow-induced exciting and caused by U heat exchange damage.
Further, flow distribution baffle is provided with above tube sheet in housing.
The flow distribution baffle specifically refers to it and is provided centrally with the logical of size larger (with respect to the caliber of U heat exchange)
Hole, force secondary side (housing upper) most of fluid by the through hole at center by improve the fluid horizontal stroke above tube sheet
To flow velocity, the impurity such as corrosion product are made to be not easy to alluvial on tube sheet.
Further, the Guan Xiang areas between flow distribution baffle and tube sheet are provided with pipe lane block.
Because Guan Xiang areas do not have heat-transfer pipe, fluid flow resistance is smaller, easily cause fluid from the short-circuit flow in Guan Xiang areas and
Without heating surface bank, tube bank heat transfer efficiency is reduced.The setting of pipe lane block limits this short-circuit flow.
Further, multiple supporting plates are provided with housing.
The supporting plate is used to play U heat exchange fixed effect is made.
Further, water separator part includes steam-water separator and drier, the carbonated drink successively from top to bottom
Separator part also includes to water ring and the steam (vapor) outlet for being arranged on case top.
Further, connected to water ring with water inlet main pipe, the water inlet main pipe to water ring end by tilting down setting.
I.e. steam generator employs the feed main structure of inclined, can effectively prevent to water ring water hammer and heat point
Layer.
Further, multiple J-shaped pipes are provided with and communicated with to water ring, the straight length of J-shaped pipe is connected with to water ring.
The J-shaped pipe body instruction is shaped as J-shaped, and its one end is straight tube, and one end is bend pipe, is set to water ring uniform intervals
Multiple J-shaped pipes are put, are advantageous to uniformly feed water to water ring.
The utility model compared with prior art, has the following advantages and advantages：
The utility model is simple in construction, reliable design, by the design of horizontal supporting mechanism, can limit steam generator and hang down
Directly in the displacement in main pipe hot leg direction, but allow displacement of the steam generator along main pipe hot leg direction.Damper axis with
Main pipe hot leg is parallel, can limit steam generator sudden displacement caused by earthquake or pipeline break, but allow due to
Slow displacement caused by the thermal expansion of loop, and then the design can make steam generator have more preferable anti-seismic performance.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the utility model embodiment, forms the one of the application
Part, the restriction to the utility model embodiment is not formed.In the accompanying drawings：
Fig. 1 is the structural representation of steam generator；
Fig. 2 is the structural representation of horizontal supporting bindiny mechanism；
The structural representation of Tu3Shi Guan lanes block；
Fig. 4 is the structural representation of flow distribution baffle.
Mark and corresponding parts title in accompanying drawing：
1- tube sheets, 2- housings, 3-U type heat exchanger tubes, 4- vibrationproof bars, 5- is to water ring, 6- steam-water separators, 7- driers, 8-
Steam (vapor) outlet, 9-J shape pipes, 10- water inlet main pipes, 11- horizontal supporting connecting plates, 12- supporting plates, 13- flow distribution baffles, 14- mono-
Time entrance is surveyed, 15- mono- surveys time outlet, 16- pipes lane block.
Embodiment
For the purpose of this utility model, technical scheme and advantage is more clearly understood, with reference to embodiment and accompanying drawing,
The utility model is described in further detail, and exemplary embodiment of the present utility model and its explanation are only used for explaining this
Utility model, it is not intended as to restriction of the present utility model.
Embodiment 1：
As shown in Figure 1 and Figure 2, a kind of presurized water reactor steam generator with horizontal supporting connecting plate, including housing 2, shell
The inside of body 2 includes the heat exchanging part of bottom and the water separator part on top, and the heat exchanging part includes tube sheet 1, U-shaped to change
Heat pipe 3, which stands upside down, to be arranged on tube sheet 1, and the survey time entrance 14 and one that the heat exchanging part also includes being arranged on the bottom of housing 2 is surveyed
Secondary outlet 15；The water separator part includes steam-water separator 6 and drier 7, the carbonated drink point successively from top to bottom
Also include to water ring 5 and be arranged on the steam (vapor) outlet 8 at the top of housing 2 from device part；The middle part outer wall of the housing 2 is provided with
Horizontal supporting mechanism, the horizontal supporting mechanism include 4 horizontal supporting attachment structures, 11,4 horizontal supporting attachment structures 11
One group two-by-two, every group of axle with housing 2 is symmetrical set, and one of which is arranged in the thermal expansion azimuth axis of housing 2, the group
Each horizontal supporting attachment structure 11 is made up of 2 to 6 horizontal supporting connecting plates, and for connecting 1 to 3 damper, it is another
Group and the thermal expansion azimuth axis of housing 2 form the angle less than 90 °, and each horizontal supporting attachment structure 11 of the group is by 2 to 4
Horizontal supporting connecting plate forms, and for connecting 1 to 2 push-and-pull rod.
Specifically, the U heat exchange 3 that steam generator described in the utility model uses is using through TT heat treatments
Inconel690 alloys, external diameter 17.48mm, the nominal wall thickness of U heat exchange 3 are 1.02mm, it is contemplated that small-bend radius is U-shaped to be changed
The bend pipe of heat pipe 3 may caused by trommel, the nominal wall thickness of small-bend radius U heat exchange 3 allow increase by 0.01~
0.03mm。
This steam generator heat-transfer pipe arranges that stringing pitch is 24~27mm, is calculated with outer surface using equilateral triangle
Heat transfer area be about 5600m2~7500m2.
Under accidental conditions, this to provide pressure 6.71MPa a~7.2MPa a steam, steam moisture is in flow
0.1% is not higher than before limiter, 0.25% is not higher than after current limiter.
This steam generator secondary side has enough circulating ratios (>=3).
This steam generator projected life is 60 years, compared with existing steam generator, improves service life.
The steam-water separator includes several Spiralism type steam-water separators, and it is 300 that steam-water separator, which rises cylinder interior diameter,
~510mm, each steam-water separator have 3~6 vanes, and the lift angle of vane is 20~40 °.
Drier is made up of several dryer units, if being mounted with dry plate double hook shape waveform in each dryer unit
Plate.
Embodiment 2：
As shown in Figures 1 to 4, the present embodiment is based on embodiment 1, and the bending section of the U heat exchange 3 is provided with multigroup anti-
Shake bar 4；Flow distribution baffle 13 is provided with above tube sheet 1 in the housing 2；Set between the flow distribution baffle 13 and tube sheet 1
It is equipped with pipe lane block 16；Multiple supporting plates 12 are provided with the housing 2；It is described to be connected to water ring 5 with water inlet main pipe 10, it is described
Main pipe 10 of intaking to the end of water ring 5 by tilting down setting；It is described to be provided with and communicated with multiple J-shaped pipes 9 to water ring 5, J-shaped pipe 9 it is straight
Pipeline section is connected with to water ring 5.
Above-described embodiment, the purpose of this utility model, technical scheme and beneficial effect are entered
One step describes in detail, should be understood that and the foregoing is only specific embodiment of the present utility model, is not used to limit
Determine the scope of protection of the utility model, it is all within the spirit and principles of the utility model, any modification for being made, equally replace
Change, improve, should be included within the scope of protection of the utility model.
Claims (9)
1. a kind of presurized water reactor steam generator with horizontal supporting connecting plate, including housing (2), housing (2) is internal to be included
The heat exchanging part of bottom and the water separator part on top, it is characterised in that the middle part outer wall of the housing (2) is provided with
Horizontal supporting mechanism, the horizontal supporting mechanism include 4 horizontal supporting attachment structures (11), 4 horizontal supporting attachment structures
(11) two-by-two one group, every group of axle with housing (2) is symmetrical set, and one of which is arranged in the thermal expansion axis of orientation of housing (2)
On line, each horizontal supporting attachment structure (11) of the group is made up of 2 to 6 horizontal supporting connecting plates, and for connecting 1 to 3
Damper, the thermal expansion azimuth axis of another group and housing (2) form the angle less than 90 °, each horizontal supporting connection of the group
Structure (11) is made up of 2 to 4 horizontal supporting connecting plates, and for connecting 1 to 2 push-and-pull rod.
2. a kind of presurized water reactor steam generator with horizontal supporting connecting plate according to claim 1, its feature exist
In the heat exchanging part includes tube sheet (1), and U heat exchange (3), which is stood upside down, to be arranged on tube sheet (1), and the heat exchanging part also includes
It is arranged on the one of housing (2) bottom and surveys time entrance (14) and a survey time outlet (15).
3. a kind of presurized water reactor steam generator with horizontal supporting connecting plate according to claim 2, its feature exist
In the bending section of the U heat exchange (3) is provided with multigroup vibrationproof bar (4).
4. a kind of presurized water reactor steam generator with horizontal supporting connecting plate according to claim 2, its feature exist
In the housing (2) is interior to be provided with flow distribution baffle (13) above tube sheet (1).
5. a kind of presurized water reactor steam generator with horizontal supporting connecting plate according to claim 4, its feature exist
In the Guan Xiang areas between the flow distribution baffle (13) and tube sheet (1) are provided with pipe lane block (16).
6. a kind of presurized water reactor steam generator with horizontal supporting connecting plate according to claim 2, its feature exist
In the housing (2) is interior to be provided with multiple supporting plates (12).
7. a kind of presurized water reactor steam generator with horizontal supporting connecting plate according to claim 1, its feature exist
In the water separator part includes steam-water separator (6) and drier (7), the steam-water separation successively from top to bottom
Device part also includes to water ring (5) and the steam (vapor) outlet (8) being arranged at the top of housing (2).
8. a kind of presurized water reactor steam generator with horizontal supporting connecting plate according to claim 7, its feature exist
In described to be connected to water ring (5) with water inlet main pipe (10), the water inlet main pipe (10) to water ring (5) end by tilting down setting.
9. a kind of presurized water reactor steam generator with horizontal supporting connecting plate according to claim 7, its feature exist
In described to be provided with and communicated with multiple J-shaped pipes (9) to water ring (5), the straight length of J-shaped pipe (9) is connected with to water ring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720743749.4U CN206861492U (en) | 2017-06-23 | 2017-06-23 | A kind of presurized water reactor steam generator with horizontal supporting connecting plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720743749.4U CN206861492U (en) | 2017-06-23 | 2017-06-23 | A kind of presurized water reactor steam generator with horizontal supporting connecting plate |
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| CN206861492U true CN206861492U (en) | 2018-01-09 |
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| CN201720743749.4U Active CN206861492U (en) | 2017-06-23 | 2017-06-23 | A kind of presurized water reactor steam generator with horizontal supporting connecting plate |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269830A (en) * | 2018-07-26 | 2019-01-25 | 中广核工程有限公司 | The measurement method and system of Studies of PWR Vertical Steam Generator circulating ratio |
| CN109458609A (en) * | 2018-11-13 | 2019-03-12 | 中国核动力研究设计院 | A kind of pressurized water reactor nuclear power station steam generator water supply ring bearing structure and system |
| CN110578915A (en) * | 2019-09-11 | 2019-12-17 | 常州大学 | Steam generator with preheater and superheater |
| CN113035381A (en) * | 2021-02-03 | 2021-06-25 | 中广核工程有限公司 | Support structure of nuclear power station voltage stabilizer |
-
2017
- 2017-06-23 CN CN201720743749.4U patent/CN206861492U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269830A (en) * | 2018-07-26 | 2019-01-25 | 中广核工程有限公司 | The measurement method and system of Studies of PWR Vertical Steam Generator circulating ratio |
| CN109269830B (en) * | 2018-07-26 | 2021-06-25 | 中广核工程有限公司 | Method and system for measuring circulation multiplying power of vertical steam generator of pressurized water reactor nuclear power station |
| CN109458609A (en) * | 2018-11-13 | 2019-03-12 | 中国核动力研究设计院 | A kind of pressurized water reactor nuclear power station steam generator water supply ring bearing structure and system |
| CN109458609B (en) * | 2018-11-13 | 2019-11-12 | 中国核动力研究设计院 | A kind of pressurized water reactor nuclear power station steam generator water supply ring bearing structure and system |
| CN110578915A (en) * | 2019-09-11 | 2019-12-17 | 常州大学 | Steam generator with preheater and superheater |
| CN113035381A (en) * | 2021-02-03 | 2021-06-25 | 中广核工程有限公司 | Support structure of nuclear power station voltage stabilizer |
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