CN207282162U - A kind of water seal arrangement for nuclear power station drain line - Google Patents
A kind of water seal arrangement for nuclear power station drain line Download PDFInfo
- Publication number
- CN207282162U CN207282162U CN201720588038.4U CN201720588038U CN207282162U CN 207282162 U CN207282162 U CN 207282162U CN 201720588038 U CN201720588038 U CN 201720588038U CN 207282162 U CN207282162 U CN 207282162U
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- China
- Prior art keywords
- pipeline
- inverted
- water seal
- nuclear power
- drain line
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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
-
- 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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- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
The utility model discloses a kind of water seal arrangement for nuclear power station drain line, including inverted U pipeline, the upstream of the inverted U pipeline is connected with containment white-out main pipe line；Exhaust line is provided with the top of the inverted U pipeline；The check valve for hindering fluid to be moved from inverted U pipeline top to exhaust line is provided with the exhaust line；The upstream of the inverted U pipeline, which is provided with, prevents the upstream of check-valves that fluid is flowed from from inverted U pipeline to containment white-out main pipe line or the inverted U pipeline and the ascent stage of the inverted U pipe from forming the linker that bottom connects.Water seal arrangement provided by the utility model for nuclear power station drain line can form water seal in the shell outer portion of containment white-out manifold, prevent that air is leaked into outside containment along drain line in containment, therefore npp safety shell slip can be reduced, ensures nuclear power plant's operation and safety.
Description
Technical field
The utility model belongs to the hydrophobic exhaust field of nuclear power station, and in particular to a kind of water seal dress of nuclear power station drain line
Put.
Background technology
The hydrophobic exhaust system of nuclear island belongs to one of nuclear power station three wastes system, and major function is to collect nuclear island to include in containment
The radioactive liquid waste produced is run, and waste liquid is delivered to by liquid waste treatment system by pipeline and is handled.Produced in containment
Waste liquid arranged by gravity or using draining pump to containment white-out manifold, by containment white-out manifold arranged out of containment to
Outside containment.When air enters in containment white-out manifold for some reason in containment, it will cause containment inner air and outer air to be in contact.
According to Operating Plant Experience, atmospheric pressure most time is more than the outer air of shell in containment, therefore air can lead in containment
Cross containment white-out manifold to arrange to outside shell, cause containment leak rate high, hidden danger is come to nuclear power plant's operation and safety belt.
Water seal can preferably solve containment leak situation caused by air intercommunication inside and outside shell, still, existing water seal
Structure has a problem that, when using sealing structure for water draining, can produce the waste stream source that siphonage causes sealing structure for water upstream
Source constantly flows to downstream, causes improper discharge opeing effect, this siphon effect atmospheric pressure in containment is more than air outside shell
Become apparent in the case of pressure.
Utility model content
For the problems of in the prior art, the utility model aims to provide a kind of for nuclear power station drain line
Water seal arrangement, shell outer portion of the device in containment white-out manifold set water seal, prevent that air is along drain line in containment
Leak into outside containment, thus cause npp safety shell slip high, hidden danger is come to nuclear power plant's operation and safety belt, in water seal
Upper setting anti-siphon means, solve the problems, such as that water seal loses effect because of siphon.
To reach above-mentioned purpose of utility model, the technical solution of the utility model is as follows：
A kind of water seal arrangement for nuclear power station drain line, including inverted U pipeline, the upstream of the inverted U pipeline with
Containment white-out main pipe line connects；Exhaust line is provided with the top of the inverted U pipeline；Obstruction is provided with the exhaust line
The check valve that fluid is moved from inverted U pipeline top to exhaust line；The upstream of the inverted U pipeline be provided with prevent fluid by
The check-valves or the upstream of the inverted U pipeline and the inverted U pipe that inverted U pipeline is flowed to containment white-out main pipe line
Ascent stage forms the linker of bottom connection.
Further, the above-mentioned water seal arrangement for nuclear power station drain line, the top of the inverted U pipeline are higher than institute
State more than containment white-out manifold 800mm.
Further, the above-mentioned water seal arrangement for nuclear power station drain line, the exhaust line downstream are provided with
Water leakage collection funnel.
Further, the above-mentioned water seal arrangement for nuclear power station drain line, is set on the water leakage collection funnel
There is observation window.
Further, the above-mentioned water seal arrangement for nuclear power station drain line, water leakage collection funnel lower section are provided with
Water discharge pipeline is leaked, and is connected with the drain line of inverted U line downstream.
Further, the above-mentioned water seal arrangement for nuclear power station drain line, leaks to be provided with water discharge pipeline and lets out
Leak discharge pipe line isolating valve.
Further, the above-mentioned water seal arrangement for nuclear power station drain line, the inverted U line upstream are provided with pipe
Road is shown on trial, and the pipeline is to show on trial to be arranged at the check-valves upstream.
Further, the above-mentioned water seal arrangement for nuclear power station drain line, the check valve downstream is provided with hydrophobic
Flange.
Further, the above-mentioned water seal arrangement for nuclear power station drain line, the ascent stage of the inverted U pipeline are set
There are liquid level gauge on the spot and quick coupling.
Further, the above-mentioned water seal arrangement for nuclear power station drain line, the range of the liquid level gauge on the spot be not small
In 700mm, the quick coupling is arranged on liquid level gauge downstream on the spot.
The utility model has the advantages that：
1st, the water seal arrangement provided by the utility model for nuclear power station drain line can be containment white-out manifold's
Shell outer portion forms water seal, prevents that air is leaked into outside containment along drain line in containment, therefore can reduce nuclear power plant
Containment leak rate, ensures nuclear power plant's operation and safety；
The 2nd, anti-siphon means are set in water seal, prevent water seal from being lost because of siphon, water seal reliability is effectively ensured；
3rd, inverted U pipeline is set by the shell outer portion in containment white-out manifold, utilizes its upstream line and inverted U pipe
Line forms water seal, and inverted U pipeline highly exceedes more than its upstream bilge main containment outer portion 800mm, for preventing safety
Atm difference promotes water seal inside and outside shell, water seal is constantly lost and then and atmosphere.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of water seal arrangement for nuclear power station drain line of the utility model.
In above-mentioned attached drawing, 1, check valve；2nd, water leakage collection funnel；3rd, isolating valve；4th, pipeline is shown on trial；5th, liquid level on the spot
Meter；6th, quick coupling；7th, check-valves；8th, hydrophobic flange.
Embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, the utility model discloses a kind of water seal arrangement for nuclear power plant's drain line, including inverted U
Pipeline (node N10 between node N12, successively by node N04, N05, N11, N06), is arranged in containment white-out manifold
Containment outer portion (node N01 between node N02, successively by node N03, N13, N10, N04, N05, N11, N06,
N12, N09).The upstream of the inverted U pipeline, which is provided with, prevents what fluid from flowing from inverted U pipeline to containment white-out main pipe line
Check-valves 7；When upstream drainage water, part waste liquid will be detained the ascent stage (N10 to N11 sections of node) of the inverted U pipeline
It is interior, water seal (check-valves 7 prevents this section of waste reflux) is formed, completely cuts off containment inner air and outer air.It may also rely in the present embodiment
The upstream (node N01 is between node N10) of inverted U pipeline and the ascent stage of the inverted U pipe (N10 is between node N11)
Form the linker of bottom connection；Water seal effect can also be realized by law of connected vessels, completely cut off containment inner air and outer air.
Inverted U pipeline top is provided with exhaust line (node N06 to node N07), and obstruction stream is provided with exhaust line
The check valve 1 that body is moved from inverted U pipeline top to exhaust line.Exhaust line (node N06 to node N07) is used for anti-rainbow
Inhale, by exhaust line, the outer workshop air of containment is turned on inverted U pipeline top, ensures inverted U pipeline top and containment
Outer workshop atmospheric pressure is identical, reduces siphon power, achievees the purpose that to destroy siphonage.Exhaust line check valve 1 is used for
When swimming water, waste liquid is prevented to enter among exhaust line (node N06 to node N07).
As shown in Figure 1, due to atmospheric pressure about 6KPa at most higher than atmospheric pressure outside containment in containment, it is described
Inverted U pipeline height (node N10 passes sequentially through node N04 and node N05 between node N11) should be dredged more than its upstream
Supply mains's containment outer portion (node N13 is between node N10) more than 800mm, it is ensured that described in U-tube line (node N03
To between node N11, successively by node N010, N04, N05) in the height of water seal that is formed be not less than 700mm, accordingly
, inverted U pipeline ascent stage (node N10 between node N11, successively by node N04, N05) sets liquid on the spot
Position meter 5, this on the spot liquid level gauge 5 range also just be not less than 700mm.
In the present embodiment, the exhaust line downstream is provided with water leakage collection funnel 2, enters exhaust line for collecting
Interior waste liquid.Be provided with observation window on water leakage collection funnel 2, facilitate operations staff observe in water leakage collection funnel 2 whether
There is water.The lower section of water leakage collection funnel 2 sets leakage water discharge pipeline (node N08 is between node N09), and with inverted U pipe
Line downstream drain line (node N12 between node N02, by node N09) is connected, for emptying water leakage collection funnel 2
In waste liquid, leak water discharge pipeline on be provided with isolating valve 3, easy to water leakage discharge control.
Meanwhile it is provided with pipeline in the drain line (node N13 is between node N10) of the inverted U line upstream
Show on trial 4 (upstreams for being arranged at check-valves 7).Pipeline show on trial 4 be used to help operations staff observe upstream whether water, when observing
When upstream does not have water, then leakage water discharge pipeline isolating valve 3 can be opened, water leakage collection funnel 2 is emptied.
As shown in Figure 1, in inverted U pipeline ascent stage (node N10 between node N11, successively by node
N04, N05), the downstream of liquid level gauge 5 is additionally provided with quick coupling 6 on the spot.Operations staff can use the observation of liquid level gauge 5 water seal on the spot
Highly, when water seal height declines, then when showing on trial 4 confirmations without upland water by pipeline, operations staff can pass through fast quick access
First 6 interim access demineralized waters carry out moisturizing for water seal, to ensure the reliability of water seal.
Meanwhile it is provided with non-return in the drain line (node N13 is between node N10) of the inverted U line upstream
Valve 7, when operations staff injects demineralized water by quick coupling 6 into pipeline, check-valves 7 may insure that demineralized water will not be quick
Returned by pipeline adverse current in containment, avoid therefore carrying out security risk to equipment belt in containment.
As shown in Figure 1, it is provided with the drain line (node N13 is between node N10) of the inverted U line upstream
Hydrophobic flange 8, during maintenance, can empty whole water seal pipeline (node N03 to node N11, by node by hydrophobic flange 8
N13, N10, N04, N05), facilitate operations staff to be overhauled.
Water seal arrangement provided by the utility model for nuclear power station drain line can be in the shell of containment white-out manifold
Outer portion forms water seal, prevents that air is leaked into outside containment along drain line in containment, therefore can reduce nuclear power plant's peace
Full shell slip, ensures nuclear power plant's operation and safety；Anti-siphon means are set in water seal, prevent water seal from being lost because of siphon,
Water seal reliability is effectively ensured；Inverted U pipeline is set by the shell outer portion in containment white-out manifold, utilizes its upstream line
Water seal is formed with inverted U pipeline, inverted U pipeline highly exceedes more than its upstream bilge main containment outer portion 800mm, is used for
Prevent atm difference inside and outside containment from promoting water seal, water seal is constantly lost and then and atmosphere.
Obviously, those skilled in the art can carry out the utility model various modification and variations without departing from this practicality
New spirit and scope.In this way, if the utility model claims are belonged to these modifications and variations of the utility model
And its within the scope of equivalent technology, then the utility model is also intended to comprising including these modification and variations.
Claims (10)
- A kind of 1. water seal arrangement for nuclear power station drain line, it is characterised in that：Including inverted U pipeline, the inverted U pipeline Upstream be connected with containment white-out main pipe line；Exhaust line is provided with the top of the inverted U pipeline；Set on the exhaust line It is equipped with the check valve (1) for hindering fluid to be moved from inverted U pipeline top to exhaust line；The upstream of the inverted U pipeline is set Having prevents the upstream of check-valves (7) that fluid is flowed from from inverted U pipeline to containment white-out main pipe line or the inverted U pipeline The linker connected with the ascent stage formation bottom of the inverted U pipe.
- 2. it is used for the water seal arrangement of nuclear power station drain line as claimed in claim 1, it is characterised in that：The inverted U pipeline Top be higher than more than the containment white-out manifold 800mm.
- 3. it is used for the water seal arrangement of nuclear power station drain line as claimed in claim 1, it is characterised in that：The exhaust line Downstream is provided with water leakage collection funnel (2).
- 4. it is used for the water seal arrangement of nuclear power station drain line as claimed in claim 3, it is characterised in that：The water leakage is collected Funnel is provided with observation window on (2).
- 5. it is used for the water seal arrangement of nuclear power station drain line as claimed in claim 3, it is characterised in that：Water leakage collection funnel (2) lower section is provided with leakage water discharge pipeline, and is connected with the drain line of inverted U line downstream.
- 6. it is used for the water seal arrangement of nuclear power station drain line as claimed in claim 5, it is characterised in that：Leak water discharge pipeline On be provided with leakage water discharge pipeline isolating valve (3).
- 7. it is used for the water seal arrangement of nuclear power station drain line as claimed in claim 4, it is characterised in that：The inverted U pipeline Upstream is provided with pipeline and shows on trial (4), and the pipeline is to show on trial to be arranged at the check-valves (7) upstream.
- 8. it is used for the water seal arrangement of nuclear power station drain line as claimed in claim 1, it is characterised in that：The check-valves (7) Downstream is provided with hydrophobic flange (8).
- 9. the water seal arrangement for nuclear power station drain line as described in claim 1-8 is any, it is characterised in that：The U The ascent stage of type pipeline is provided with liquid level gauge (5) on the spot and quick coupling (6).
- 10. it is used for the water seal arrangement of nuclear power station drain line as claimed in claim 9, it is characterised in that：The liquid level on the spot The range of meter (5) is not less than 700mm, and the quick coupling (6) is arranged on liquid level gauge (5) downstream on the spot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720588038.4U CN207282162U (en) | 2017-05-24 | 2017-05-24 | A kind of water seal arrangement for nuclear power station drain line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720588038.4U CN207282162U (en) | 2017-05-24 | 2017-05-24 | A kind of water seal arrangement for nuclear power station drain line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207282162U true CN207282162U (en) | 2018-04-27 |
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ID=61992420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720588038.4U Active CN207282162U (en) | 2017-05-24 | 2017-05-24 | A kind of water seal arrangement for nuclear power station drain line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207282162U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111161898A (en) * | 2019-12-11 | 2020-05-15 | 岭澳核电有限公司 | Nuclear island exhaust and water delivery pipe network system for million-kilowatt nuclear power station |
-
2017
- 2017-05-24 CN CN201720588038.4U patent/CN207282162U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111161898A (en) * | 2019-12-11 | 2020-05-15 | 岭澳核电有限公司 | Nuclear island exhaust and water delivery pipe network system for million-kilowatt nuclear power station |
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