CN112797316A - Emergency air source box for water gate of nuclear power station refueling pool - Google Patents
Emergency air source box for water gate of nuclear power station refueling pool Download PDFInfo
- Publication number
- CN112797316A CN112797316A CN201911112576.6A CN201911112576A CN112797316A CN 112797316 A CN112797316 A CN 112797316A CN 201911112576 A CN201911112576 A CN 201911112576A CN 112797316 A CN112797316 A CN 112797316A
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- CN
- China
- Prior art keywords
- air
- valve
- pipeline
- air source
- emergency
- 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.)
- Pending
Links
- 238000001363 water suppression through gradient tailored excitation Methods 0.000 title claims abstract description 31
- 238000002955 isolation Methods 0.000 claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 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
- 235000021050 feed intake Nutrition 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 238000012423 maintenance Methods 0.000 abstract description 8
- 230000002285 radioactive effect Effects 0.000 abstract description 3
- 230000009977 dual effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 9
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Images
Classifications
-
- 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
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention belongs to the field of equipment machinery, and particularly relates to an emergency air source box for a water gate of a refueling pool of a nuclear power station. When the maintenance pressure space of the sealing gasket of the water gate is failed or the gas supply is not smooth, the sealing performance of the water gate is affected, and the radioactive water of the component pool is leaked to the side of the reactor pool. In the device, an air inlet pipe, a compressed air source isolation valve, an air source one-way valve and one end of a tee joint are sequentially connected through a pipeline; the pressure reducing valve is connected with one end of the tee joint and the rear check valve of the pressure reducing valve through a pipeline; the exhaust pipe and the exhaust pipe isolation valve are connected through a pipeline. This set of device changes the air feed air supply of reloading pond sluice gate into double-source air feed by single air supply, and dual air feed has increased the sealed reliability of sluice gate for when normally killing out trouble or the air feed is not smooth, reserve emergent air supply can be air feed at once, has effectively avoided single trouble, has reduced the operation risk.
Description
Technical Field
The invention belongs to the field of equipment machinery, and particularly relates to an emergency air source box for a water gate of a refueling pool of a nuclear power station.
Background
The water gate of the refueling water pool is arranged in a channel between the component pool and the reactor pool, so that the component pool and the reactor pool can be separated, sealing is realized, and the whole refueling water pool is divided into two parts. The water gate sealing performance is guaranteed by inflatable seal gasket. The service air compression system provides compressed air for inflating the sealing gasket.
After the water gate is installed, the reactor pool can be drained independently, and the component pool still keeps a water filling state, so that the reactor pool side can be maintained independently. Under the low water level working condition, a maintainer directly enters the bottom of a reactor water tank to inspect the flange surface and the main bolt hole of the pressure vessel, and measures, records and repairs defects. The water gate of the refueling water tank can realize the sealing of the component tank and the reactor water tank after being arranged in a channel between the component tank and the reactor water tank, the reactor water tank can drain water so as to carry out low-water-level maintenance work during the low water level of the pressure vessel, and the component tank can be kept in a full water state so as to shield the radioactive dose of the upper reactor internal component and the reactor nuclear measuring instrument.
When the maintenance pressure space of the sealing gasket of the water gate is failed or the gas supply is not smooth, the sealing performance of the water gate is affected, the radioactive water of the component pool is leaked to the side of the reactor pool, and the personal safety of maintenance personnel in the reactor pool is seriously threatened.
Therefore, the emergency air source box for the water gate of the refueling water pool of the nuclear power station is urgently needed to be invented, and a spare air source is added, so that when the normal pressure air fails or the air supply is not smooth, the spare emergency air source can supply air immediately, and the water gate of a reactor factory building is prevented from leaking to influence the normal maintenance work.
Disclosure of Invention
1. The purpose is as follows:
the purpose of this patent is in order to design an emergent air supply case for nuclear power station reloading pond sluice gate to guarantee that the sealed pad that the emergent air supply can supply with the sluice gate when normal air feed loses, with a device that maintains its sluice gate is sealed.
2. The technical scheme is as follows:
an air inlet pipe, a compressed air source isolation valve and an air source check valve are sequentially connected through a pipeline; the pressure reducing valve is connected with the air source one-way valve and the rear one-way valve of the pressure reducing valve through pipelines; the exhaust pipe and the exhaust pipe isolation valve are connected through a pipeline.
The other end of the air source one-way valve is connected with an emergency air supply pipeline one-way valve through a pipeline, the other end of the emergency air supply pipeline one-way valve is connected with an air supply pipeline isolation valve through a pipeline, and the other end of the air supply pipeline isolation valve is connected with an emergency air supply air inlet pipe.
The other end of the check valve behind the pressure reducing valve is connected with one end of the seal air inlet isolation valve through a pipeline, and the other end of the seal air inlet isolation valve is connected with the air outlet pipe through a pipeline.
The other end of the exhaust pipe isolation valve is connected with the exhaust pipe through a pipeline.
And the two ends of the sealing gasket air inlet isolating valve are connected with an air pressure meter and a sealing pressure meter in parallel.
The air outlet pipe is connected with a water gate sealing gasket air supply pipe through a hard pipeline.
The air inlet pipe is connected with an emergency air source nitrogen cylinder through a hard pipeline arrangement.
3. The effect is as follows:
this set of device changes the air feed air supply of reloading pond sluice gate into double-source air feed by single air supply, and double air feed has increased the sealed reliability of sluice gate, compares in the single air feed in compressed air source before, through the emergent air supply case of design, increases emergent air supply all the way for when normally compressed air breaks down or the air feed is not smooth, reserve emergent air supply can be air feed at once, has effectively avoided single trouble, has reduced the operation risk.
Drawings
FIG. 1: emergency air source box internal structure diagram of water gate of refueling pool
In the figure: 1. an air inlet pipe; 2. an emergency air supply and inlet pipe; 3. an exhaust pipe; 4. an air outlet pipe; 5. a compressed air source isolation valve; 6. a compressed air source pressure reducing valve; 7. a rear check valve of the pressure reducing valve; 8. an emergency air supply pipeline one-way valve; 9. an exhaust pipe isolation valve; 10. a gas supply line isolation valve; 11. a seal air inlet isolation valve; 12. a gas pressure gauge; 13. sealing a pressure gauge; 14. an air source check valve; 15. and a tee joint.
Detailed Description
The invention relates to an emergency air source box for a water gate of a refueling pool of a nuclear power station. As shown in fig. 1, it is mainly composed of an air supply and exhaust pipe, an exhaust pipe isolation valve, an air source check valve, a compressed air source pressure reducing valve, a pressure sealing gauge, etc. The whole device is arranged in a cuboid box and can be made into a standard part. Intake pipe 1 connects nuclear power plant through hard pipeline and overhauls with normal air supply source of supplying pressure, and emergent air feed intake pipe 2 passes through hard pipeline arrangement and connects on emergent air supply nitrogen cylinder, and the sealed air supply pipe that fills up of outlet duct 4 through hard pipeline connection sluice gate, 3 air-out pipes to empty. Under normal conditions, a compressed air source for maintenance of a nuclear power plant is used for reducing the pressure to 0.22MPa through an air inlet pipe 1, a compressed air source isolation valve 5, a one-way valve 14 and a tee joint 15 by a compressed air source pressure reducing valve 6, and then the pressure is supplied to a water gate sealing gasket through a pressure reducing valve rear one-way valve 7 and a sealing gasket air inlet isolation valve 11; the emergency air supply pipeline one-way valve 8 prevents air from leaking to the emergency air source side during normal air supply. When the pressure air source for maintenance fails, the emergency air source supplies pressure to the water gate sealing gasket through the air inlet pipe 2, the air supply pipeline isolation valve 10, the emergency air supply pipeline one-way valve 8, the tee joint 15, the pressure reducing valve 6 and the pressure reducing valve 6 to 0.22MPa, the pressure reducing valve 7 and the sealing gasket air inlet isolation valve 11; the air supply check valve 14 prevents blow-by of the emergency air supply to the fault air supply side. After the intake valve 11 is closed, the air pressure gauge 12 and the seal pressure gauge 13 display the intake pressure and the seal pressure, respectively. When the water gate sealing gasket needs to exhaust, the exhaust pipe isolation valve 9 is opened to exhaust after the air inlet valve 11 is closed.
According to the scheme shown in the figure 1, an air inlet pipe 1 of an emergency air source box is connected with a compressed air source for maintenance through a hard pipeline, an air inlet pipe 2 of the emergency air source box is arranged and connected on an emergency air source nitrogen cylinder through the hard pipeline, an air outlet pipe 4 of the emergency air source box is connected with an air supply pipe of a water gate sealing gasket through the hard pipeline, and an air outlet pipe 3 of the emergency air source box is empty;
closing an exhaust pipe isolation valve 9, an air supply pipeline isolation valve 10 and a seal pad air inlet isolation valve 11, opening a compressed air source isolation valve 5, adjusting the pressure of a pressure reducing valve to 0.22MPa through the compressed air source and locking, and checking whether leakage exists in each joint from an emergency air source box to the compressed air source pipeline;
closing the isolation valve 5 of the emergency gas source box, the isolation valve 9 of the exhaust pipe and the seal pad gas inlet isolation valve 11, opening an emergency gas source nitrogen cylinder, opening the isolation valve 10 of the gas supply pipeline, and checking whether leakage exists from each joint on the pipeline from the emergency gas source box to the emergency gas source nitrogen cylinder;
confirming that an exhaust valve 9 of a water gate air source box is closed, opening an air supply valve 5 of an emergency air source box and an exhaust pipe isolation valve 9, and checking whether leakage exists at each joint on a pipeline from the emergency air source box to the water gate air source box;
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 line isolation valve 10, the seal cushion air inlet isolation valve 11 and the exhaust isolation valve 9 to ensure the smoothness of the exhaust line of the water gate air source box; and completing the test of the emergency air source box.
Claims (7)
1. The utility model provides a nuclear power station pond sluice gate emergency air source case that reloads which characterized in that: one ends of the air inlet pipe (1), the compressed air source isolating valve (5), the air source one-way valve (14) and the tee joint (15) are sequentially connected through a pipeline; the pressure reducing valve (6) is connected with one end of the tee joint (15) and the rear check valve (7) of the pressure reducing valve through a pipeline; the exhaust pipe (3) is connected with the exhaust pipe isolation valve (9) through a pipeline.
2. The emergency air source box of the water gate of the refueling pool of the nuclear power plant as recited in claim 1, characterized in that: the other end of tee bend (15) pass through pipe connection emergency air supply line check valve (8), emergency air supply line check valve (8) other end passes through pipe connection air supply line isolation valve (10), emergent air feed intake pipe (2) is connected to air supply line isolation valve (10) other end.
3. The emergency air source box of the water gate of the refueling pool of the nuclear power plant as recited in claim 1, characterized in that: the other end of the back check valve (7) of the pressure reducing valve is connected with one end of the sealing pad air inlet isolating valve (11) through a pipeline, and the other end of the sealing pad air inlet isolating valve (11) is connected with the air outlet pipe (4) through a pipeline.
4. The emergency air source box of the water gate of the refueling pool of the nuclear power plant as recited in claim 1, characterized in that: the other end of the exhaust pipe isolation valve (9) is connected with the air outlet pipe (4) through a pipeline.
5. The emergency air source box of the water gate of the refueling pool of the nuclear power plant as claimed in claim 3, wherein: and two ends of the sealing gasket air inlet isolating valve (11) are connected with an air pressure gauge (12) and a sealing pressure gauge (13) in parallel.
6. The emergency air source box of the water gate of the refueling pool of the nuclear power plant as claimed in claim 4, wherein: the air outlet pipe (4) is connected with the water gate sealing gasket air supply pipe through a hard pipeline.
7. The emergency air source box of the water gate of the refueling pool of the nuclear power plant as claimed in claim 2, characterized in that: the emergency air supply air inlet pipe (2) is connected with an emergency air source nitrogen cylinder through hard pipeline arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911112576.6A CN112797316A (en) | 2019-11-14 | 2019-11-14 | Emergency air source box for water gate of nuclear power station refueling pool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911112576.6A CN112797316A (en) | 2019-11-14 | 2019-11-14 | Emergency air source box for water gate of nuclear power station refueling pool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112797316A true CN112797316A (en) | 2021-05-14 |
Family
ID=75803673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911112576.6A Pending CN112797316A (en) | 2019-11-14 | 2019-11-14 | Emergency air source box for water gate of nuclear power station refueling pool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112797316A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201137956Y (en) * | 2007-12-14 | 2008-10-22 | 钱伟龙 | Air source box dispensers |
| JP2015087232A (en) * | 2013-10-30 | 2015-05-07 | 日立Ｇｅニュークリア・エナジー株式会社 | Gas supply apparatus and nuclear power plant air or nitrogen supply apparatus |
| JP2015117721A (en) * | 2013-12-17 | 2015-06-25 | 日立Ｇｅニュークリア・エナジー株式会社 | Gas supply apparatus and air or nitrogen supply apparatus 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 |
| CN106402653A (en) * | 2016-09-19 | 2017-02-15 | 中国核电工程有限公司 | Sluice gate sealing system for reactor building of nuclear power station |
| CN107967951A (en) * | 2016-10-20 | 2018-04-27 | 江苏核电有限公司 | Sluice gate pressurizer during a kind of containment entirety bulge test |
| 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 |
| CN211315793U (en) * | 2019-11-14 | 2020-08-21 | 中核核电运行管理有限公司 | Emergency air source box for water gate of nuclear power station refueling pool |
-
2019
- 2019-11-14 CN CN201911112576.6A patent/CN112797316A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201137956Y (en) * | 2007-12-14 | 2008-10-22 | 钱伟龙 | Air source box dispensers |
| JP2015087232A (en) * | 2013-10-30 | 2015-05-07 | 日立Ｇｅニュークリア・エナジー株式会社 | Gas supply apparatus and nuclear power plant air or nitrogen supply apparatus |
| JP2015117721A (en) * | 2013-12-17 | 2015-06-25 | 日立Ｇｅニュークリア・エナジー株式会社 | Gas supply apparatus and air or nitrogen supply apparatus 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 |
| CN106402653A (en) * | 2016-09-19 | 2017-02-15 | 中国核电工程有限公司 | Sluice gate sealing system for reactor building of nuclear power station |
| CN107967951A (en) * | 2016-10-20 | 2018-04-27 | 江苏核电有限公司 | Sluice gate pressurizer during a kind of containment entirety bulge test |
| 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 |
| CN211315793U (en) * | 2019-11-14 | 2020-08-21 | 中核核电运行管理有限公司 | Emergency air source box for water gate of nuclear power station refueling pool |
Non-Patent Citations (1)
| Title |
|---|
| 朱雪锋;: "水闸门分段式设计", 机械工程师, no. 06, 10 June 2016 (2016-06-10) * |
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