CN203520891U - Steam generator secondary side cooling system of nuclear power station and connection component thereof - Google Patents
Steam generator secondary side cooling system of nuclear power station and connection component thereof Download PDFInfo
- Publication number
- CN203520891U CN203520891U CN201320531116.9U CN201320531116U CN203520891U CN 203520891 U CN203520891 U CN 203520891U CN 201320531116 U CN201320531116 U CN 201320531116U CN 203520891 U CN203520891 U CN 203520891U
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- secondary side
- steam generator
- connecting portion
- nuclear power
- generator secondary
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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 field of steam generator secondary side cooling of a nuclear power station, and provides a steam generator secondary side cooling system of a nuclear power station and a connection component thereof. In the steam generator secondary side cooling system of a nuclear power station, the steam generator secondary side is connected with an auxiliary water supply system; the auxiliary water supply system is connected with a swing check valve; and the steam generator secondary side cooling system comprises a conventional island demineralized water distribution system, a high-pressure water pipe connected with the conventional island demineralized water distribution system and a connection component connected between the high-pressure water pipe and a control port of the swing check valve without a cover plate, a swing component, a sealing component and a valve clack component. According to the steam generator secondary side cooling system of a nuclear power station provided by the utility model, the demineralized water in the conventional island demineralized water distribution system is used as a cooling water source of the steam generator secondary side; and the demineralized water in the conventional island demineralized water distribution system can be smoothly injected into the steam generator secondary side through the connection component so as to quickly cool the steam generator secondary side of the nuclear power station.
Description
Technical field
The utility model relates to nuclear power technology field, is specifically related to steam generator secondary side cooling system and the link thereof of nuclear power station.
Background technology
During the overhaul of nuclear power station, if the steam generator of nuclear power station has the work such as dismounting secondary side exsiccator and the hydraulic testing, to make steam generator secondary side repair time window nervous, after opening steam generator secondary side manhole, exsiccator temperature is around up to 50 ℃, if can not drop to rapidly below 42 ℃, to affect and remove exsiccator and the hydraulic testing, thereby affect critical path, the prolonging overhaul duration.
And the equal cooling steam generator secondary side rapidly of cooling scheme in the past.
Investigate by analysis checking, because steam generator secondary side is connected with auxiliary feedwater system (ASG system), and auxiliary feedwater system is connected with the identical swing type reverse checkvalve of three structures that is numbered 019/021/023VD, therefore can the demineralized water in conventional island demineralized water distribution system (SER system) water tank be injected into steam generator secondary side cooling steam generator secondary side by tri-swing type reverse checkvalves of 019/021/023VD of auxiliary feedwater system.
With reference to Fig. 1,2; The swing type reverse checkvalve cross-sectional view being connected with auxiliary feedwater system, the swing type reverse checkvalve being connected with auxiliary feedwater system is removed and is revolved the cross-sectional view that opens assembly, seal assembly and flap assembly 13.
Swing type reverse checkvalve 1 comprises valve body 17, and valve body 1 is provided with controls mouth 14, water inlet 15, water delivering orifice 16; Control mouthful 14 outer cover plates 18 that have been provided with, in control mouth 14, be provided with to revolve and open assembly 11 and seal assembly 12, flap assembly 13 is installed in valve body 1.
Demineralized water in conventional island demineralized water distribution system water tank is injected into steam generator secondary side, need to adopt high-pressure water pipe 6 to be injected into swing type reverse checkvalve 1 as the demineralized water in conventional island demineralized water distribution system water tank on the one hand, on the other hand by the cover plate of swing type reverse checkvalve 1 18, revolve and open assembly 11, seal assembly 12 and flap assembly 13 is removed, also have on the one hand and need link to connect the control mouth 14 of this high-pressure water pipe 6 and swing type reverse checkvalve 1.
And at present, there is not the link of the control mouth 14 that connects this high-pressure water pipe and swing type reverse checkvalve 1.
Utility model content
The purpose of this utility model is to provide a kind of steam generator secondary side cooling system of nuclear power station, is intended to solve the problem of the but steam generator secondary side that cooling scheme in the past all can not rapid cold nuclear power station.
The utility model is by the following technical solutions:
A steam generator secondary side cooling system for nuclear power station, described steam generator secondary side is connected with auxiliary feedwater system, and described auxiliary feedwater system is connected with swing type reverse checkvalve;
Comprise conventional island demineralized water distribution system, the high-pressure water pipe that connects described conventional island demineralized water distribution system, be connected in the link between described high-pressure water pipe and the control mouth of described swing type reverse checkvalve, described swing type reverse checkvalve has been removed cover plate, has been revolved and open assembly, seal assembly and flap assembly.
Further improvement as the steam generator secondary side cooling system of the utility model nuclear power station, described link comprises the first connecting portion that connects described high-pressure water pipe, access the second connecting portion of the control mouth of described swing type reverse checkvalve, be located between described the first connecting portion and described the second connecting portion, be removably connected to the flange connecting portion of the control mouth of described swing type reverse checkvalve.
As the further improvement of the steam generator secondary side cooling system of the utility model nuclear power station, described the second connecting portion is provided with the ring groove that sealing ring is installed.
As the further improvement of the steam generator secondary side cooling system of the utility model nuclear power station, described ring groove comprises the first ring groove and the second ring groove.
As the further improvement of the steam generator secondary side cooling system of the utility model nuclear power station, described the second connecting portion is provided with the breach of dodging the water inlet in described swing type reverse checkvalve.
As the further improvement of the steam generator secondary side cooling system of the utility model nuclear power station, the indentation, there of described the second connecting portion is provided with and the integrated base plate of described the second connecting portion, and described base plate is provided with connecting hole.
As the further improvement of the steam generator secondary side cooling system of the utility model nuclear power station, described flange connecting portion is provided with two connecting holes.
Another object of the present utility model is to provide a kind of link of steam generator secondary side cooling system of nuclear power station, be connected between high-pressure water pipe and the control mouth of swing type reverse checkvalve, described swing type reverse checkvalve has been removed cover plate, has been revolved and open assembly, seal assembly and flap assembly, comprise the first connecting portion that connects described high-pressure water pipe, access the second connecting portion of the control mouth of described swing type reverse checkvalve, be located between described the first connecting portion and described the second connecting portion, be removably connected to the flange connecting portion of the control mouth of described swing type reverse checkvalve.
As the further improvement of the utility model link, described the second connecting portion is provided with the ring groove that sealing ring is installed.
As the further improvement of the utility model link, described ring groove comprises the first ring groove and the second ring groove.
As the further improvement of the utility model link, described the second connecting portion is provided with the breach of dodging the water inlet in described swing type reverse checkvalve.
As the further improvement of the utility model link, the indentation, there of described the second connecting portion is provided with and the integrated base plate of described the second connecting portion, and described base plate is provided with connecting hole.
The steam generator secondary side cooling system of the nuclear power station that the utility model provides, the steam generator secondary side of nuclear power station is being carried out when cooling, by the cover plate of the swing type reverse checkvalve of auxiliary feedwater system, revolve and open assembly, after seal assembly and flap assembly are removed, the link that now the utility model can be provided accesses the control mouth of described swing type reverse checkvalve, and then connect this link and conventional island demineralized water distribution system by high-pressure water pipe, now the demineralized water in conventional island demineralized water distribution system can be injected into swing type reverse checkvalve by described high-pressure water pipe and described link, because the flap assembly of this swing type reverse checkvalve is removed, the demineralized water that is now injected into swing type reverse checkvalve can inject and cooling steam generator secondary side.Thus, the steam generator secondary side cooling system of the nuclear power station that the utility model provides, demineralized water in employing conventional island demineralized water distribution system is as the cooling water source of steam generator secondary side, and can be by the smooth steam injection generator of the demineralized water secondary side in conventional island demineralized water distribution system by described link, thereby steam generator secondary side that can rapid cooling nuclear power station.
Accompanying drawing explanation
Fig. 1 is the swing type reverse checkvalve cross-sectional view being connected with auxiliary feedwater system;
Fig. 2 is that the swing type reverse checkvalve being connected with auxiliary feedwater system is removed cover plate, revolved the cross-sectional view opening after assembly, seal assembly and flap assembly;
The structured flowchart of the steam generator secondary side cooling system of the nuclear power station that Fig. 3 provides for the utility model;
The first section of structure of the link of the steam generator secondary side cooling system of the nuclear power station that Fig. 4 provides for the utility model;
The first structure vertical view of the link of the steam generator secondary side cooling system of the nuclear power station that Fig. 5 provides for the utility model;
The second section of structure of the link of the steam generator secondary side cooling system of the nuclear power station that Fig. 6 provides for the utility model;
The second structure vertical view of the link of the steam generator secondary side cooling system of the nuclear power station that Fig. 7 provides for the utility model;
Structural representation before the link of the steam generator secondary side cooling system of the nuclear power station that Fig. 8 provides for the utility model is connected with swing type reverse checkvalve, high-pressure water pipe;
Structural representation after the link of the steam generator secondary side cooling system of the nuclear power station that Fig. 9 provides for the utility model is connected with swing type reverse checkvalve, high-pressure water pipe.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.Should be appreciated that specific embodiment described herein, only for explaining the utility model, is not limited to the utility model.
With reference to Fig. 1～9.
The utility model embodiment provides a kind of steam generator secondary side cooling system of nuclear power station, and steam generator secondary side is connected with auxiliary feedwater system, and auxiliary feedwater system is connected with swing type reverse checkvalve; Comprise conventional island demineralized water distribution system, the high-pressure water pipe that connects conventional island demineralized water distribution system, is connected in high-pressure water pipe and has removed cover plate 18, revolves the link 2 between the control mouth 14 of the swing type reverse checkvalve 1 that opens assembly 11, seal assembly 12 and flap assembly 13.
The steam generator secondary side cooling system of the nuclear power station that the utility model provides, the steam generator secondary side of nuclear power station is being carried out when cooling, by the cover plate 18 of the swing type reverse checkvalve 1 of auxiliary feedwater system, revolve and open assembly 11, after seal assembly 12 and flap assembly 13 are removed, now can be by the control mouth 14 of link 2 access swing type reverse checkvalves, and then connect this link 2 and conventional island demineralized water distribution system by high-pressure water pipe, now the demineralized water in conventional island demineralized water distribution system can be injected into swing type reverse checkvalve 1 by high-pressure water pipe and link 2, because the flap assembly 13 of this swing type reverse checkvalve 1 has been removed, the demineralized water that is now injected into swing type reverse checkvalve 1 can inject and cooling steam generator secondary side.Thus, the steam generator secondary side cooling system of the nuclear power station that the utility model provides, demineralized water in employing conventional island demineralized water distribution system is as the cooling water source of steam generator secondary side, and can be by the smooth steam injection generator of the demineralized water secondary side in conventional island demineralized water distribution system by link 2, thereby steam generator secondary side that can rapid cooling nuclear power station.
In the present embodiment, link 2 comprises the first connecting portion 21 that connects high-pressure water pipe, the second connecting portion 22 that connects the control mouth 14 of swing type reverse checkvalve 1, is connected between the first connecting portion 21 and the second connecting portion 22, is removably connected to the flange connecting portion 23 of the control mouth 14 of swing type reverse checkvalve 1.
Wherein, the profile of flange connecting portion 23 can be made into consistent with the cover plate 18 of swing type reverse checkvalve 1, like this, is convenient to the control mouth 14 that flange connecting portion 23 is installed on swing type reverse checkvalve 1.
In the present embodiment, the second connecting portion 22 is provided with the ring groove 221 that sealing ring 5 is installed.
Wherein, sealing ring 5 is RUBBER O type sealing ring, and the ring groove 221 of setting will be convenient to the installation of sealing ring 5, and the sealing ring 5 of installation can be guaranteed the sealing property of the control mouth 14 of the second connecting portion 22 access swing type reverse checkvalves 1.
In the present embodiment, described ring groove 221 comprises the first ring groove 2211 and the second ring groove 2222.
This ring groove arranges twice, and two seals ring 5 can be installed, and two seals ring 5 can more effectively be guaranteed sealing property.Because the internal diameter of the different depth of the control mouth 14 of swing type reverse checkvalve 1 is inconsistent, so sealing ring 5 comprises the first sealing ring 51 and the second sealing ring 52 that twice diameter is different.
Certainly, ring groove can more effectively be guaranteed sealing property more than three Dao Huo tri-roads can be set like this, but ring groove arranges when too much, will increase the processing cost of link 2.
In the present embodiment, the second connecting portion 22 is provided with the breach 222 of the water inlet 15 of dodging in swing type reverse checkvalve 1.
In view of the reason of swing type reverse checkvalve 1 inner structure, for making the control mouth 14 of the access swing type reverse checkvalve 1 that link 2 can be more deep, must breach 222 be set at the second connecting portion 22.
In the present embodiment, breach 222 places of described the second connecting portion 22 are provided with and the integrated base plate 2221 of described the second connecting portion 22, and described base plate 2221 is provided with connecting hole 2222.
Because the flap assembly 13 of swing type reverse checkvalve 1 is connected with water inlet 15 by screw 4, these screw 4 installation sites are breach 222 positions of the second connecting portion 22 of link 2, therefore, with the connecting hole 2222 arranging on the integrated base plate 2221 of the second connecting portion 22, be convenient to screw 4 and by this connecting hole 2222, the second connecting portion 22 be fixedly installed in to the water inlet 15 of swing type reverse checkvalve 1, thereby further link 2 is fixed on swing type reverse checkvalve 1.
In the present embodiment, flange connecting portion 23 is provided with two connecting holes 231.
The utility model embodiment also provides a kind of link of steam generator secondary side cooling system of nuclear power station, be connected in high-pressure water pipe and removed cover plate 18, revolve between the control mouth 14 of the swing type reverse checkvalve 1 that opens assembly 11, seal assembly 12 and flap assembly 13, it comprises the first connecting portion 21 that connects high-pressure water pipe, the second connecting portion 22 that connects the control mouth 14 of swing type reverse checkvalve 1, is connected between the first connecting portion 21 and the second connecting portion 22, is removably connected to the flange connecting portion 23 of the control mouth 14 of swing type reverse checkvalve 1.
The link of the steam generator secondary side cooling system of the nuclear power station that the utility model provides, the steam generator secondary side of nuclear power station is being carried out when cooling, by the cover plate 18 of the swing type reverse checkvalve 1 of auxiliary feedwater system, revolve and open assembly 11, after seal assembly 12 and flap assembly 13 are removed, now can be by the control mouth 14 of link 2 access swing type reverse checkvalves, and then connect this link 2 and conventional island demineralized water distribution system by high-pressure water pipe, now the demineralized water in conventional island demineralized water distribution system can be injected into swing type reverse checkvalve 1 by high-pressure water pipe and link 2, because the flap assembly 13 of this swing type reverse checkvalve 1 has been removed, the demineralized water that is now injected into swing type reverse checkvalve 1 can inject and cooling steam generator secondary side.Thus, the link of the steam generator secondary side cooling system of the nuclear power station that the utility model provides, demineralized water in employing conventional island demineralized water distribution system is as the cooling water source of steam generator secondary side, and can be by the smooth steam injection generator of the demineralized water secondary side in conventional island demineralized water distribution system by link 2, thereby steam generator secondary side that can rapid cooling nuclear power station.
In the present embodiment, the second connecting portion 22 is provided with the ring groove 221 that sealing ring 5 is installed.
Wherein, sealing ring 5 is RUBBER O type sealing ring, and the ring groove 221 of setting will be convenient to the installation of sealing ring 5, and the sealing ring 5 of installation can be guaranteed the sealing property of the control mouth 14 of the second connecting portion 22 access swing type reverse checkvalves 1.
In the present embodiment, described ring groove 221 comprises the first ring groove 2211 and the second ring groove 2222.
This ring groove arranges twice, and two seals ring 5 can be installed, and two seals ring 5 can more effectively be guaranteed sealing property.Because the internal diameter of the different depth of the control mouth 14 of swing type reverse checkvalve 1 is inconsistent, so sealing ring 5 comprises the first sealing ring 51 and the second sealing ring 52 that twice diameter is different.
Certainly, ring groove can more effectively be guaranteed sealing property more than three Dao Huo tri-roads can be set like this, but ring groove arranges when too much, will increase the processing cost of link 2.
In the present embodiment, the second connecting portion 22 is provided with the breach 222 of the water inlet 15 of dodging in swing type reverse checkvalve 1.
In view of the reason of swing type reverse checkvalve 1 inner structure, for making the control mouth 14 of the access swing type reverse checkvalve 1 that link 2 can be more deep, must breach 222 be set at the second connecting portion 22.
In the present embodiment, breach 222 places of described the second connecting portion 22 are provided with and the integrated base plate 2221 of described the second connecting portion 22, and described base plate 2221 is provided with connecting hole 2222.
Because the flap assembly 13 of swing type reverse checkvalve 1 is connected with water inlet 15 by screw 4, these screw 4 installation sites are breach 222 positions of the second connecting portion 22 of link 2, therefore, should with breach 222 in the integrated base plate 2221 of the second connecting portion 22 on the connecting hole 2222 that arranges, be convenient to screw 4 and by this connecting hole 2222, the second connecting portion 22 be fixedly installed in to the water inlet 15 of swing type reverse checkvalve 1, thereby further link 2 is fixed on swing type reverse checkvalve 1.
In the present embodiment, flange connecting portion 23 is provided with two connecting holes 231.
Above are only the utility model preferred embodiment, be not limited to the utility model, all any modifications of doing within principle of the present utility model, be equal to and replace and improvement etc., within all should being included in the scope of the utility model protection.
Claims (12)
1. a steam generator secondary side cooling system for nuclear power station, described steam generator secondary side is connected with auxiliary feedwater system, and described auxiliary feedwater system is connected with swing type reverse checkvalve (1);
It is characterized in that, comprise conventional island demineralized water distribution system, the high-pressure water pipe (6) that connects described conventional island demineralized water distribution system, be connected in the link (2) between described high-pressure water pipe (6) and the control mouth (14) of described swing type reverse checkvalve (1), described swing type reverse checkvalve (1) has been removed cover plate (18), has been revolved and open assembly (11), seal assembly (12) and flap assembly (13).
2. the steam generator secondary side cooling system of nuclear power station as claimed in claim 1, it is characterized in that, described link (2) comprises the first connecting portion (21) that connects described high-pressure water pipe (6), access second connecting portion (22) of the control mouth (14) of described swing type reverse checkvalve (1), be located between described the first connecting portion (21) and described the second connecting portion (22), be removably connected to the flange connecting portion (23) of the control mouth (14) of described swing type reverse checkvalve (1).
3. the steam generator secondary side cooling system of nuclear power station as claimed in claim 2, is characterized in that, described the second connecting portion (22) is provided with the ring groove (221) that sealing ring (5) is installed.
4. the steam generator secondary side cooling system of nuclear power station as claimed in claim 3, is characterized in that, described ring groove (221) comprises the first ring groove (2211) and the second ring groove (2222).
5. the steam generator secondary side cooling system of nuclear power station as claimed in claim 2, is characterized in that, described the second connecting portion (22) is provided with the breach (222) of dodging the water inlet (15) in described swing type reverse checkvalve (1).
6. the steam generator secondary side cooling system of nuclear power station as claimed in claim 5, it is characterized in that, the breach (222) of described the second connecting portion (22) is located to be provided with and the integrated base plate of described the second connecting portion (22) (2221), and described base plate (2221) is provided with connecting hole (2222).
7. the steam generator secondary side cooling system of nuclear power station as claimed in claim 2, is characterized in that, described flange connecting portion (23) is provided with two connecting holes (231).
8. the link of the steam generator secondary side cooling system of a nuclear power station, be connected between high-pressure water pipe (6) and the control mouth (14) of swing type reverse checkvalve (1), described swing type reverse checkvalve (1) has been removed cover plate (18), revolve and open assembly (11), seal assembly (12) and flap assembly (13), it is characterized in that, comprise the first connecting portion (21) that connects described high-pressure water pipe (6), access second connecting portion (22) of the control mouth (14) of described swing type reverse checkvalve (1), be located between described the first connecting portion (21) and described the second connecting portion (22), be removably connected to the flange connecting portion (23) of the control mouth (14) of described swing type reverse checkvalve (1).
9. the link of the steam generator secondary side cooling system of nuclear power station as claimed in claim 8, is characterized in that, described the second connecting portion (22) is provided with the ring groove (221) that sealing ring (5) is installed.
10. the link of the steam generator secondary side cooling system of nuclear power station as claimed in claim 9, is characterized in that, described ring groove (221) comprises the first ring groove (2211) and the second ring groove (2222).
The link of the steam generator secondary side cooling system of 11. nuclear power stations as claimed in claim 8, it is characterized in that, described the second connecting portion (22) is provided with the breach (222) of dodging the water inlet (15) in described swing type reverse checkvalve (1).
The link of the steam generator secondary side cooling system of 12. nuclear power stations as claimed in claim 11, it is characterized in that, the breach (222) of described the second connecting portion (22) is located to be provided with and the integrated base plate of described the second connecting portion (22) (2221), and described base plate (2221) is provided with connecting hole (2222).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320531116.9U CN203520891U (en) | 2013-08-21 | 2013-08-21 | Steam generator secondary side cooling system of nuclear power station and connection component thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320531116.9U CN203520891U (en) | 2013-08-21 | 2013-08-21 | Steam generator secondary side cooling system of nuclear power station and connection component thereof |
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| Publication Number | Publication Date |
|---|---|
| CN203520891U true CN203520891U (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320531116.9U Expired - Fee Related CN203520891U (en) | 2013-08-21 | 2013-08-21 | Steam generator secondary side cooling system of nuclear power station and connection component thereof |
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| CN (1) | CN203520891U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352155A (en) * | 2016-09-23 | 2017-01-25 | 广东核电合营有限公司 | Online pressure seal overhauling method of primary loop check valve of nuclear power plant |
-
2013
- 2013-08-21 CN CN201320531116.9U patent/CN203520891U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352155A (en) * | 2016-09-23 | 2017-01-25 | 广东核电合营有限公司 | Online pressure seal overhauling method of primary loop check valve of nuclear power plant |
| CN106352155B (en) * | 2016-09-23 | 2018-06-19 | 广东核电合营有限公司 | One loop of nuclear power station non-return valve on-line pressure sealant repair method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 |
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| CF01 | Termination of patent right due to non-payment of annual fee |