CN208014382U - The isolating device and reactor RHR system of reactor RHR system - Google Patents
The isolating device and reactor RHR system of reactor RHR system Download PDFInfo
- Publication number
- CN208014382U CN208014382U CN201820282246.6U CN201820282246U CN208014382U CN 208014382 U CN208014382 U CN 208014382U CN 201820282246 U CN201820282246 U CN 201820282246U CN 208014382 U CN208014382 U CN 208014382U
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- China
- Prior art keywords
- overpressure protection
- reactor
- containment
- heat removal
- residual heat
- Prior art date
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- 230000004224 protection Effects 0.000 claims abstract description 125
- 238000002955 isolation Methods 0.000 claims abstract description 29
- 239000002826 coolant Substances 0.000 claims abstract description 22
- 239000012530 fluid Substances 0.000 claims abstract description 6
- 239000002699 waste material Substances 0.000 claims description 2
- 230000000306 recurrent effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000941 radioactive substance Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
The utility model discloses a kind of isolating device of reactor RHR system and reactor RHR systems, isolating device includes that valve group is isolated for the first of isolation, first isolation valve group is arranged on the residual heat removal system suction line in containment, isolating device further includes overpressure protection pipeline, the overpressure protection mechanism for preventing reverse flow of fluids in overpressure protection pipeline is provided on overpressure protection pipeline, overpressure protection mechanism is additionally operable to carry out overpressure protection, overpressure protection pipeline is isolated positioned at first between valve group and containment with the junction of the residual heat removal system suction line in containment., it can be achieved that the isolating seal in containment requires after reactor RHR system is isolated with reactor coolant loop, containment leak bypass is avoided.After reactor RHR system is connected to reactor coolant loop, if there is Low temperature overpressure state, isolating device can realize Low temperature overpressure defencive function.
Description
Technical field
The utility model belongs to technical field of nuclear power, and in particular to a kind of isolating device of reactor RHR system and
Reactor RHR system.
Background technology
Reactor RHR system is one safety-related important system of nuclear power plant.As shown in Figure 1, existing nuclear power
The reactor RHR system of factory includes the residual heat removal system suction line and waste heat being threaded through on the containment 1 of reactor
Discharge system return line, residual heat removal system suction line connect one end with residual heat removal system return line and are located at containment
Outside 1；The other end of residual heat removal system suction line penetrates in containment 1, and connects reactor coolant loop hot pipe section；
The other end of residual heat removal system return line penetrates in containment 1, and connects reactor coolant loop cold tube section.Reactor
Residual heat removal system includes the first isolation valve group 2 for isolation inside containment 1, and the first isolation valve group 2 is arranged in
On residual heat removal system suction line in containment 1, first isolation valve group 2 include two the first isolating valves 3, two first every
It is respectively arranged at the residual heat removal system suction line branch road in containment from valve 3, the residual heat removal system in containment 1 is inhaled
Enter to be additionally provided with overpressure protection pipeline 4 on pipeline, the second isolation valve group 5, the second isolation valve group are provided on overpressure protection pipeline 4
5 include two pilot-operated type overpressure protection valves 6, and two pilot-operated type overpressure protection valves 6 are respectively arranged at overpressure protection pipeline branch 12
On, overpressure protection pipeline 4 and the junction of the residual heat removal system suction line in containment 1 positioned at first be isolated valve group 2 with
Between containment 1.Be provided on the pipeline that residual heat removal system suction line runs through except containment 1 the outer isolating valve 7 of first shell,
The outer isolating valve 8 of second shell, residual heat removal system are provided on the pipeline that residual heat removal system return line runs through except containment 1
Return line is provided with check-valves 9 in shell on the pipeline within containment 1.
The residual heat removal system sucking being arranged in containment 1 in design of nuclear power plant in reactor RHR system
The first isolation valve group 2 on pipeline is simultaneously as the isolating valve between reactor RHR system and reactor coolant loop
One of group, after reactor RHR system is connected to and puts into operation with reactor coolant loop, entire reactor waste row
Go out system and reactor coolant loop is possible to that Low temperature overpressure state can be in, then just needing to be let out by overpressure protection
Pressure, and reactor coolant with radionuclide is emitted into pressurizer relief tank.However, the pilot-operated type in the prior art is super
Pressure protection valve 6 is located in containment 1, and structural principle sealing difficult to realize may result in containment 1 and bypass leakage problem,
And then the leakage of radioactive substance may be caused, to reduce the safety of power plant.
Utility model content
Technical problem to be solved in the utility model is aiming at the above shortcomings existing in the prior art, to provide a kind of anti-
The isolating device and reactor RHR system for answering heap residual heat removal system solve overpressure protection valve in the prior art
Poor sealing may result in containment leak bypass, and then the technical issues of radioactive substance may be caused to reveal.
It solves technical solution used by the utility model technical problem and is to provide a kind of reactor RHR system
Isolating device is arranged on reactor RHR system, and reactor RHR system includes the safety for being threaded through reactor
Residual heat removal system suction line on shell and residual heat removal system return line, residual heat removal system suction line are arranged with waste heat
Go out system return line and connect one end to be located at outside containment；The other end of residual heat removal system suction line penetrates containment
It is interior, and connect reactor coolant loop hot pipe section；The other end of residual heat removal system return line penetrates in containment, and even
Connect reactor coolant loop cold tube section；Isolating device includes that valve group, the first isolation valve group setting is isolated for the first of isolation
On the residual heat removal system suction line in containment,
Isolating device further includes overpressure protection pipeline, is provided on overpressure protection pipeline for preventing in overpressure protection pipeline
The overpressure protection mechanism of reverse flow of fluids, overpressure protection mechanism are additionally operable to carry out overpressure protection, in overpressure protection pipeline and containment
Residual heat removal system suction line junction be located at first isolation valve group and containment between.
Preferably, overpressure protection mechanism includes：The check valve set and pilot-operated type superpressure being set on overpressure protection pipeline
Valve group, pilot-operated type overpressure protection valve group is protected to be located at the downstream of check valve set.
Preferably, overpressure protection pipeline includes at least two overpressure protection pipeline branches, pilot-operated type overpressure protection valve group
Including at least two pilot-operated type overpressure protection valves, every overpressure protection pipeline branch road is respectively arranged with pilot-operated type overpressure protection
Valve.
Preferably, check valve set is set in the main pipe of overpressure protection pipeline.
Preferably, check valve set includes at least two check-valves, and every overpressure protection pipeline branch road is provided with series connection
Check-valves and pilot-operated type overpressure protection valve, and the pilot-operated type overpressure protection valve of every overpressure protection pipeline branch road is located at non-return
The downstream of valve.
Preferably, overpressure protection mechanism includes at least two spring loaded safety valves, and overpressure protection pipeline includes at least two
Overpressure protection pipeline branch, every overpressure protection pipeline branch road are respectively arranged with spring loaded safety valve.
Preferably, the first isolation valve group includes at least two first isolating valves, and the residual heat removal system in containment is inhaled
It includes at least two residual heat removal system suction line branches to enter pipeline, and every residual heat removal system suction line branch road is arranged
There is the first isolating valve.
The utility model also provides a kind of reactor RHR system, including above-mentioned isolating device.
The advantageous effect of the isolating device of reactor RHR system in the utility model：
(1) it is provided on the overpressure protection pipeline of isolating device in the utility model for preventing from flowing in overpressure protection pipeline
The overpressure protection mechanism that body is flow backwards may be implemented to pacify after reactor RHR system is isolated with reactor coolant loop
The isolating seal requirement of Quan Kenei overpressure protections mechanism, avoids containment leak bypass, ensures containment as nuclear power plant's third
The seal request of road barrier improves the safety of nuclear power plant, meanwhile, superpressure guarantor also is carried out to reactor RHR system
Shield.
(2) in addition, after reactor RHR system is connected to reactor coolant loop, if there is Low temperature overpressure
Low temperature overpressure defencive function equally may be implemented in state, isolating device, and reactor RHR system and reactor is avoided to cool down
Agent system is destroyed by high pressure, prevents accident from upgrading, and improves safety and the economy of power plant.
(3) isolating device in the utility model makes isolation and the overpressure protection scheme of the containment of residual heat removal system
Reliability and safety higher.
Description of the drawings
Fig. 1 is the structural schematic diagram of the isolating device of the reactor RHR system of the prior art；
Fig. 2 is the structural schematic diagram of the isolating device of the reactor RHR system in the utility model embodiment 2；
Fig. 3 is the structural schematic diagram of the isolating device of the reactor RHR system in the utility model embodiment 3；
Fig. 4 is the structural schematic diagram of the isolating device of the reactor RHR system in the utility model embodiment 4.
In figure：1- containments；Valve group is isolated in 2- first；The first isolating valves of 3-；4- overpressure protection pipelines；The second isolating valves of 5-
Group；6- pilot-operated type overpressure protection valves；The outer isolating valve of 7- first shells；The outer isolating valve of 8- second shells；Check-valves in 9- shells；10- non-returns
Valve group；11- check-valves；12- overpressure protection pipeline branches；13- pilot-operated type overpressure protection valve groups；14- spring loaded safety valves.
Specific implementation mode
It is below in conjunction with the accompanying drawings and specific real to make those skilled in the art more fully understand the technical solution of the utility model
Mode is applied to be described in further detail the utility model.
Embodiment 1
The present embodiment provides a kind of isolating devices of reactor RHR system, are arranged in reactor RHR system
On, reactor RHR system includes the residual heat removal system suction line being threaded through on the containment of reactor and waste heat row
Go out system return line, residual heat removal system suction line connect one end with residual heat removal system return line and is located at outside containment
Portion；The other end of residual heat removal system suction line penetrates in containment, and connects reactor coolant loop hot pipe section；Waste heat
The other end of discharge system return line penetrates in containment, and connects reactor coolant loop cold tube section；Isolating device packet
It includes and valve group is isolated for the first of isolation, the first isolation valve group is arranged in the residual heat removal system suction line in containment
On,
Isolating device further includes overpressure protection pipeline, is provided on overpressure protection pipeline for preventing in overpressure protection pipeline
The overpressure protection mechanism of reverse flow of fluids, overpressure protection mechanism are additionally operable to carry out overpressure protection, in overpressure protection pipeline and containment
Residual heat removal system suction line junction be located at first isolation valve group and containment between.
The advantageous effect of the isolating device of reactor RHR system in the present embodiment：
(1) it is provided on the overpressure protection pipeline of the isolating device in the present embodiment for preventing from flowing in overpressure protection pipeline
The overpressure protection mechanism that body is flow backwards may be implemented to pacify after reactor RHR system is isolated with reactor coolant loop
The isolating seal requirement of Quan Kenei overpressure protections mechanism, avoids containment leak bypass, ensures containment as nuclear power plant's third
The seal request of road barrier improves the safety of nuclear power plant, meanwhile, superpressure guarantor also is carried out to reactor RHR system
Shield.
(2) in addition, after reactor RHR system is connected to reactor coolant loop, if there is Low temperature overpressure
Low temperature overpressure defencive function equally may be implemented in state, isolating device, and reactor RHR system and reactor is avoided to cool down
Agent system is destroyed by high pressure, prevents accident from upgrading, and improves safety and the economy of power plant.
(3) isolating device in the present embodiment makes isolation and the overpressure protection scheme of the containment of residual heat removal system
Reliability and safety higher.
Embodiment 2
As shown in Fig. 2, the present embodiment provides a kind of isolating device of reactor RHR system, setting is more than the reactor
In hot discharge system, reactor RHR system includes the residual heat removal system sucking being threaded through on the containment 1 of reactor
Pipeline and residual heat removal system return line, residual heat removal system suction line connect one end with residual heat removal system return line
Outside containment 1；The other end of residual heat removal system suction line penetrates in containment 1, and connects reactor coolant
System hot pipe section；The other end of residual heat removal system return line penetrates in containment 1, and it is cold to connect reactor coolant loop
Pipeline section；Isolating device includes that valve group 2 is isolated for the first of isolation, and the first isolation valve group 2 is arranged in remaining in containment 1
On hot discharge system suction line,
Isolating device further includes overpressure protection pipeline 4, is provided on overpressure protection pipeline 4 for preventing overpressure protection pipeline
The overpressure protection mechanism of reverse flow of fluids in 4, overpressure protection mechanism are additionally operable to carry out overpressure protection, overpressure protection pipeline 4 and safety
The junction of residual heat removal system suction line in shell 1 is located between the first isolation valve group 2 and containment 1.
It should be noted that the overpressure protection mechanism in the present embodiment includes：The non-return being set on overpressure protection pipeline 4
Valve group and pilot-operated type overpressure protection valve group 13, pilot-operated type overpressure protection valve group 13 are located at the downstream of check valve set.Overpressure protection pipe
Line 4 is located in containment 1.
Preferably, overpressure protection pipeline 4 includes at least two overpressure protection pipeline branches 12, pilot-operated type overpressure protection valve
Group 13 includes at least two pilot-operated type overpressure protection valves 6, and it is super that pilot-operated type is respectively arranged on every overpressure protection pipeline branch 12
Pressure protection valve 6, can meet single failure criteria.It should be noted that the overpressure protection pipeline 4 in the present embodiment includes two
Overpressure protection pipeline branch 12, pilot-operated type overpressure protection valve group 13 include two pilot-operated type overpressure protection valves 6.
Preferably, the check valve set in the present embodiment is set in the main pipe of overpressure protection pipeline 4.Particularly, originally
Check valve set in embodiment is a check-valves 11.
Preferably, the first isolation valve group 2 includes at least two first isolating valves 3, the residual heat removal system in containment 1
Suction line includes at least two residual heat removal system suction line branches, and every residual heat removal system suction line branch road is set
It is equipped with the first isolating valve 3.Particularly, the first isolation valve group 2 in the present embodiment includes two the first isolating valves 3, containment 1
Interior residual heat removal system suction line includes two residual heat removal system suction line branches.
Specifically, residual heat removal system suction line is provided with the in the present embodiment on the pipeline except the containment 1
The outer isolating valve 7 of one shell, residual heat removal system return line are provided with the outer isolating valve of second shell on the pipeline except containment 1
8, residual heat removal system return line is provided with check-valves 9 in shell on the pipeline within containment 1.
Specifically, in the outer isolating valve 7 of first shell in the present embodiment, the outer isolating valve 8 of second shell, shell check-valves 9, first every
It is electrically operated valve from valve 3.
The present embodiment also provides a kind of reactor RHR system, including above-mentioned isolating device.
The advantageous effect of the isolating device of reactor RHR system in the present embodiment：
(1) it is provided on the overpressure protection pipeline 4 of the isolating device in the present embodiment for preventing in overpressure protection pipeline 4
The overpressure protection mechanism of reverse flow of fluids may be implemented after reactor RHR system is isolated with reactor coolant loop
The isolating seal requirement of overpressure protection mechanism, avoids 1 leak bypass of containment in containment 1, ensures that containment 1 is used as nuclear power plant
The seal request of third road barrier improves the safety of nuclear power plant, meanwhile, superpressure also is carried out to reactor RHR system
Protection.
(2) in addition, after reactor RHR system is connected to reactor coolant loop, if there is Low temperature overpressure
Low temperature overpressure defencive function equally may be implemented in state, isolating device, and reactor RHR system and reactor is avoided to cool down
Agent system is destroyed by high pressure, prevents accident from upgrading, and improves safety and the economy of power plant.
(3) isolating device in the present embodiment makes isolation and the overpressure protection scheme of the containment 1 of residual heat removal system
Reliability and safety higher.
Embodiment 3
As shown in figure 3, the present embodiment provides a kind of isolating device of reactor RHR system, and in embodiment 2
Isolating device is distinguished as：
Preferably, check valve set 10 includes at least two check-valves 11, is arranged on every overpressure protection pipeline branch 12
There are concatenated check-valves 11 and pilot-operated type overpressure protection valve 6, and the pilot-operated type superpressure on every overpressure protection pipeline branch 12 is protected
Shield valve 6 is located at the downstream of check-valves 11.It should be noted that the check valve set 10 in the present embodiment includes two check-valves 11.
The present embodiment also provides a kind of reactor RHR system, including above-mentioned isolating device.
Embodiment 4
As shown in figure 4, the present embodiment provides a kind of isolating device of reactor RHR system, and in embodiment 2
Isolating device is distinguished as：
Preferably, overpressure protection mechanism includes at least two spring loaded safety valves 14, and overpressure protection pipeline 4 includes at least
Two overpressure protection pipeline branches 12 are respectively arranged with spring loaded safety valve 14 on every overpressure protection pipeline branch 12.Specifically
, the overpressure protection mechanism in the present embodiment includes two spring loaded safety valves 14.
The present embodiment also provides a kind of reactor RHR system, including above-mentioned isolating device.
It is understood that embodiment of above is merely to illustrate that the principles of the present invention and uses exemplary
Embodiment, however the utility model is not limited thereto.For those skilled in the art, this is not being departed from
In the case of the spirit and essence of utility model, various changes and modifications can be made therein, these variations and modifications are also considered as this reality
With novel protection domain.
Claims (8)
1. a kind of isolating device of reactor RHR system is arranged on reactor RHR system, reactor waste
Discharge system includes the residual heat removal system suction line being threaded through on the containment of reactor and residual heat removal system recurrent canal
Line, residual heat removal system suction line connect one end with residual heat removal system return line and are located at outside containment；Residual heat removal
The other end of system suction line penetrates in containment, and connects reactor coolant loop hot pipe section；Residual heat removal system returns
The other end of return line penetrates in containment, and connects reactor coolant loop cold tube section；Isolating device includes for being isolated
First isolation valve group, first isolation valve group is arranged on the residual heat removal system suction line in containment, feature
It is,
Isolating device further includes overpressure protection pipeline, is provided on overpressure protection pipeline for preventing fluid in overpressure protection pipeline
The overpressure protection mechanism of refluence, overpressure protection mechanism be additionally operable to carry out overpressure protection, overpressure protection pipeline with it is remaining in containment
The junction of hot discharge system suction line is located between the first isolation valve group and containment.
2. the isolating device of reactor RHR system according to claim 1, which is characterized in that overpressure protection mechanism
Including：The check valve set and pilot-operated type overpressure protection valve group being set on overpressure protection pipeline, pilot-operated type overpressure protection valve group position
In the downstream of check valve set.
3. the isolating device of reactor RHR system according to claim 2, which is characterized in that overpressure protection pipeline
Including at least two overpressure protection pipeline branches, pilot-operated type overpressure protection valve group includes at least two pilot-operated type overpressure protection valves,
Every overpressure protection pipeline branch road is respectively arranged with pilot-operated type overpressure protection valve.
4. the isolating device of reactor RHR system according to claim 3, which is characterized in that check valve set is arranged
In in the main pipe of overpressure protection pipeline.
5. the isolating device of reactor RHR system according to claim 3, which is characterized in that check valve set includes
At least two check-valves, every overpressure protection pipeline branch road are provided with concatenated check-valves and pilot-operated type overpressure protection valve, and
The pilot-operated type overpressure protection valve of every overpressure protection pipeline branch road is located at the downstream of check-valves.
6. the isolating device of reactor RHR system according to claim 1, which is characterized in that overpressure protection mechanism
Including at least two spring loaded safety valves, overpressure protection pipeline includes at least two overpressure protection pipeline branches, and every superpressure is protected
Pillar line branch road is respectively arranged with spring loaded safety valve.
7. the isolating device of the reactor RHR system according to claim 1~6 any one, which is characterized in that
First isolation valve group includes at least two first isolating valves, and the residual heat removal system suction line in containment includes at least two
Residual heat removal system suction line branch, every residual heat removal system suction line branch road are provided with the first isolating valve.
8. a kind of reactor RHR system, which is characterized in that including the isolation dress described in claim 1~7 any one
It sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820282246.6U CN208014382U (en) | 2018-02-28 | 2018-02-28 | The isolating device and reactor RHR system of reactor RHR system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820282246.6U CN208014382U (en) | 2018-02-28 | 2018-02-28 | The isolating device and reactor RHR system of reactor RHR system |
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| Publication Number | Publication Date |
|---|---|
| CN208014382U true CN208014382U (en) | 2018-10-26 |
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ID=63887855
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820282246.6U Active CN208014382U (en) | 2018-02-28 | 2018-02-28 | The isolating device and reactor RHR system of reactor RHR system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111105882A (en) * | 2018-10-29 | 2020-05-05 | 华龙国际核电技术有限公司 | Waste heat removal system water intake pipe and nuclear reactor |
| CN113496785A (en) * | 2020-03-18 | 2021-10-12 | 华龙国际核电技术有限公司 | Overpressure protection pressure relief discharge system and nuclear power station with same |
-
2018
- 2018-02-28 CN CN201820282246.6U patent/CN208014382U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111105882A (en) * | 2018-10-29 | 2020-05-05 | 华龙国际核电技术有限公司 | Waste heat removal system water intake pipe and nuclear reactor |
| CN113496785A (en) * | 2020-03-18 | 2021-10-12 | 华龙国际核电技术有限公司 | Overpressure protection pressure relief discharge system and nuclear power station with same |
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