CN112797316B - An emergency gas source box for water gates of a nuclear power plant refueling pool - Google Patents
An emergency gas source box for water gates of a nuclear power plant refueling pool Download PDFInfo
- Publication number
- CN112797316B CN112797316B CN201911112576.6A CN201911112576A CN112797316B CN 112797316 B CN112797316 B CN 112797316B CN 201911112576 A CN201911112576 A CN 201911112576A CN 112797316 B CN112797316 B CN 112797316B
- Authority
- CN
- China
- Prior art keywords
- air
- pipeline
- valve
- emergency
- air source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000001363 water suppression through gradient tailored excitation Methods 0.000 title claims abstract description 13
- 238000002955 isolation Methods 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims abstract description 28
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 19
- 239000000463 material Substances 0.000 abstract description 4
- 230000002285 radioactive effect Effects 0.000 abstract description 3
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
- G21C13/028—Seals, e.g. for pressure vessels or containment vessels
-
- 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
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- High Energy & Nuclear Physics (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention belongs to the field of equipment and machinery, and particularly relates to an emergency air source box of a sluice gate of a refueling water tank of a nuclear power station. When the overhauling pressure of the sealing pad of the water supply gate fails or the air supply is not smooth, the tightness of the water gate is affected, and radioactive water in the component pool leaks to the side of the reactor pool. In the device, one end of an air inlet pipe, an air source isolation valve, an air source one-way valve and a tee joint are sequentially connected through a pipeline, a pressure reducing valve is connected with one end of the tee joint and a rear one-way valve of the pressure reducing valve through a pipeline, and an exhaust pipe is connected with the exhaust pipe isolation valve through a pipeline. The device changes the air supply source of the sluice gate of the material changing water pool from a single air supply to double air supply, and the double air supply increases the sealing reliability of the sluice gate, so that when normal pressure air fails or the air supply is not smooth, the standby emergency air supply can supply air immediately, thereby effectively avoiding single failure and reducing the operation risk.
Description
Technical Field
The invention belongs to the field of equipment and machinery, and particularly relates to an emergency air source box of a sluice gate of a refueling water tank of a nuclear power station.
Background
The sluice gate of the material changing pool is arranged in a channel between the component pool and the reactor pool, can separate the component pool from the reactor pool, realizes sealing and divides the whole material changing pool into two parts. The sealing performance of the sluice gate is ensured by the inflatable sealing gasket. The service pressure air system provides compressed air for inflating the sealing gasket.
When the sluice gate is installed, the reactor pool can be separately drained, and the component pool still keeps a water filling state, so that separate overhaul work can be carried out on the reactor pool side. Under the low water level working condition, an maintainer directly enters the bottom of the reactor pool to inspect the flange surface of the pressure vessel and the main bolt hole, and the defect is measured, recorded and repaired. After the sluice gate is installed in the channel between the component pool and the reactor pool, the sealing of the component pool and the reactor pool can be realized, the reactor pool can be drained during the low water level of the pressure container so as to carry out low water level maintenance work, and the component pool can be kept in a full water state so as to shield the radioactive doses of the upper in-pile components and the in-pile nuclear measuring instrument.
When the overhauling pressure of the sealing gasket of the water supply gate fails or the air supply is not smooth, the tightness of the water gate is affected, the radioactive water in the component pool leaks to the side of the reactor pool, and the personal safety of overhaulers in the reactor pool is seriously threatened.
Therefore, the emergency air source box for the sluice gate of the nuclear power station refueling water tank is urgently needed, and one standby air source is added, so that when normal pressure air fails or air supply is not smooth, the standby emergency air source can supply air immediately, leakage of the sluice gate of a reactor factory building is prevented, and normal overhaul work is influenced.
Disclosure of Invention
1. The purpose is as follows:
The purpose of this patent is in order to design an emergency air supply box for nuclear power station feed water pond sluice gate to guarantee when normal air feed loses the sealed pad that can supply the sluice gate of emergency air supply, in order to maintain a device that its sluice gate is sealed.
2. The technical scheme is as follows:
The emergency air source box for the sluice gate of the nuclear power station refueling water pond is characterized in that an air inlet pipe, an air source isolation valve and an air source check valve are sequentially connected through pipelines, a pressure reducing valve is connected with the air source check valve and a rear check valve of the pressure reducing valve through pipelines, and an exhaust pipe is connected with an exhaust pipe isolation valve through pipelines.
The other end of the air source check valve is connected with the emergency air supply pipeline check valve through a pipeline, the other end of the emergency air supply pipeline check valve is connected with the air supply pipeline isolation valve through a pipeline, and the other end of the air supply pipeline isolation valve is connected with the emergency air supply inlet pipe.
The other end of the one-way valve is connected with one end of the sealing pad air inlet isolation valve through a pipeline, and the other end of the sealing pad air inlet isolation valve is connected with an air outlet pipe through a pipeline.
The other end of the exhaust pipe isolation valve is connected with the air outlet pipe through a pipeline.
And two ends of the sealing gasket air inlet isolation valve are connected with an air pressure gauge and a sealing pressure gauge in parallel.
The air outlet pipe is connected with the water gate sealing pad air supply pipe through a hard pipeline.
The air inlet pipe is connected with an emergency air source nitrogen bottle through hard pipeline arrangement.
3. The effect is as follows:
The device changes the air supply source of the sluice gate of the material changing water pool from a single air source to double air sources, the double air sources increase the sealing reliability of the sluice gate, and compared with the prior air source single air supply, the device increases one path of emergency air source through designing the emergency air source box, so that when normal air is in fault or the air supply is not smooth, the standby emergency air source can supply air immediately, thereby effectively avoiding single fault and reducing operation risk.
Drawings
Fig. 1: emergency air source box internal structure diagram of sluice gate of material-changing pool
In the figure, an air inlet pipe 1, an emergency air supply pipe 2, an air outlet pipe 3, an air outlet pipe 4, an air source isolation valve 5, an air source pressure reducing valve 6, a pressure reducing valve rear one-way valve 7, an emergency air supply pipeline one-way valve 8, an air outlet pipe isolation valve 9, an air supply pipeline isolation valve 10, a sealing gasket air inlet isolation valve 11, an air pressure gauge 12, a sealing pressure gauge 13, an air source one-way valve 14 and a tee joint.
Detailed Description
The invention relates to an emergency air source box for a sluice gate of a nuclear power station refueling water tank. As shown in FIG. 1, the device mainly comprises an air supply and exhaust pipe, an exhaust pipe isolation valve, an air source one-way valve, a pressure reducing valve of an air source, a pressure sealing gauge and the like. The whole device is arranged in a cuboid box and can be made into a standard component. The air inlet pipe 1 is connected with a normal air supply air source for overhauling a nuclear power plant through a hard pipeline, the emergency air supply air inlet pipe 2 is connected with an emergency air supply nitrogen bottle through a hard pipeline, the air outlet pipe 4 is connected with a water gate sealing pad air supply pipe through a hard pipeline, and the air outlet pipe 3 is opposite to the air. Under normal conditions, the pressure of the air source for overhauling the nuclear power plant is reduced to 0.22MPa through the air inlet pipe 1, the air source isolation valve 5, the one-way valve 14 and the three-way valve 15 by the air source reducing valve 6, then the pressure is reduced through the reducing valve rear one-way valve 7, the water supply gate sealing gasket is provided by the gasket air inlet isolation valve 11, and the emergency air supply pipeline one-way valve 8 prevents air from being blown to the emergency air source side during normal air supply. When the pressure source for overhauling is in fault, the pressure of the emergency air source is reduced to 0.22MPa by the pressure reducing valve 6 through the air inlet pipe 2, the air supply pipeline isolation valve 10, the emergency air supply pipeline one-way valve 8 and the tee joint 15, then the pressure is reduced by the pressure reducing valve back one-way valve 7, the sealing pad air inlet isolation valve 11 is used for sealing the water gate, and the air source one-way valve 14 prevents the emergency air source from blowby to the fault air source side. After closing the intake valve 11, the barometer 12 and the seal gauge 13 display the intake pressure and the seal pressure, respectively. When the sluice valve sealing gasket needs to exhaust, the exhaust pipe isolation valve 9 is opened after the air inlet valve 11 is closed.
According to the method, an air inlet pipe 1 of an emergency air source box is connected with an overhaul pressure air source through a hard pipeline, an air inlet pipe 2 of the emergency air source box is connected with an emergency air source nitrogen bottle through a hard pipeline, an air outlet pipe 4 of the emergency air source box is connected with a sluice gate sealing pad air supply pipe through a hard pipeline, and an air outlet pipe 3 of the emergency air source box is opposite to the air;
closing the exhaust pipe isolation valve 9, the air supply pipeline isolation valve 10 and the gasket air inlet isolation valve 11, opening the air source isolation valve 5, adjusting the pressure of the pressure reducing valve to 0.22MPa through the air source, locking, and checking whether leakage exists between the emergency air source box and each joint on the air source pipeline;
Closing an emergency air source box isolation valve 5, an exhaust pipe isolation valve 9 and a sealing gasket air inlet isolation valve 11, opening an emergency air source nitrogen cylinder, opening an air supply pipeline isolation valve 10, and checking whether leakage exists in each joint on the pipeline from the emergency air source box to the emergency air source nitrogen cylinder;
confirming that the air outlet valve 9 of the sluice gate air source box is closed, opening the air inlet valve 5 and the air outlet pipe isolation valve 9 of the emergency air source box, and checking whether leakage exists in each joint on the pipeline from the emergency air source box to the sluice gate air source box;
and closing the main air supply valve 5 of the external air source (the pressure regulating valve keeps the current state unchanged), and opening the air supply pipeline isolating valve 10, the sealing gasket air inlet isolating valve 11 and the air exhaust isolating valve 9 to ensure that the air exhaust pipeline of the sluice gate air source box is smooth, and completing the test of the emergency air source box.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911112576.6A CN112797316B (en) | 2019-11-14 | 2019-11-14 | An emergency gas source box for water gates of a nuclear power plant refueling pool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911112576.6A CN112797316B (en) | 2019-11-14 | 2019-11-14 | An emergency gas source box for water gates of a nuclear power plant refueling pool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112797316A CN112797316A (en) | 2021-05-14 |
| CN112797316B true CN112797316B (en) | 2025-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911112576.6A Active CN112797316B (en) | 2019-11-14 | 2019-11-14 | An emergency gas source box for water gates of a nuclear power plant refueling pool |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211315793U (en) * | 2019-11-14 | 2020-08-21 | 中核核电运行管理有限公司 | A nuclear power station refueling pool water gate emergency air source box |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201137956Y (en) * | 2007-12-14 | 2008-10-22 | 钱伟龙 | Air source box dispensers |
| JP6208569B2 (en) * | 2013-12-17 | 2017-10-04 | 日立Ｇｅニュークリア・エナジー株式会社 | Gas supply device and air or nitrogen supply device of nuclear power plant |
| JP6118231B2 (en) * | 2013-10-30 | 2017-04-19 | 日立Ｇｅニュークリア・エナジー株式会社 | Gas supply device and air or nitrogen supply device of nuclear power plant |
| CN105805553A (en) * | 2016-05-06 | 2016-07-27 | 上海核工程研究设计院 | Emergency meeting compressed air system of nuclear power station |
| CN106402653B (en) * | 2016-09-19 | 2019-12-24 | 中国核电工程有限公司 | Nuclear power station reactor factory building sluice gate sealing system |
| CN107967951B (en) * | 2016-10-20 | 2024-06-07 | 江苏核电有限公司 | Sluice gate pressure maintaining device during integral pressure test of containment |
| CN109931502A (en) * | 2017-12-18 | 2019-06-25 | 上海弗川自动化技术有限公司 | A kind of gas source feed system with emergency piping |
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- 2019-11-14 CN CN201911112576.6A patent/CN112797316B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211315793U (en) * | 2019-11-14 | 2020-08-21 | 中核核电运行管理有限公司 | A nuclear power station refueling pool water gate emergency air source box |
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| CN112797316A (en) | 2021-05-14 |
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