CN210964424U - Airborne radioactivity filtering system of underground nuclear power station - Google Patents
Airborne radioactivity filtering system of underground nuclear power station Download PDFInfo
- Publication number
- CN210964424U CN210964424U CN201921480429.XU CN201921480429U CN210964424U CN 210964424 U CN210964424 U CN 210964424U CN 201921480429 U CN201921480429 U CN 201921480429U CN 210964424 U CN210964424 U CN 210964424U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- filter
- nuclear power
- pressure relief
- group
- 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.)
- Active
Links
Images
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model relates to the technical field of underground nuclear power stations, and discloses an airborne radioactive filtering system of an underground nuclear power station, which comprises a containment vessel positioned in an underground rock stratum, a pressure relief cavern and a ground water pool, wherein a standby pipeline set and a filtering device are arranged in the pressure relief cavern, the filtering device comprises an air inlet, the air outlet and the end of the air outlet are respectively communicated with the air inlet and the air outlet, the venturi filter group comprises a plurality of filters communicated through pipelines in a standby pipeline group, a standby stop valve group is arranged on the standby pipeline group, the standby stop valve group comprises a plurality of stop valves arranged on the pipelines and used for realizing series-parallel connection of the filters through opening and closing, the air inlet is communicated with the interior of a containment through a pressure relief pipe, the air outlet is communicated with a ground chimney through a pressure relief discharge pipeline, and the filtering device is further connected with a ground water tank through a ground injection pipeline and a ground discharge pipeline. The utility model discloses underground nuclear power station airborne radioactivity filtration system can flexibly set up the filter quantity of access according to accident severity, realizes changing long service life in labour easily.
Description
Technical Field
The utility model relates to an underground nuclear power station technical field, concretely relates to underground nuclear power station airborne radioactivity filtration system.
Background
The underground nuclear power station places nuclear plants such as a nuclear island and the like underground, utilizes the protection and containment functions of underground rock masses to limit the release of potential radioactive substances to the environment, improves the safety of the nuclear power station, and provides a new idea for the development of nuclear power safety in China.
Moreover, the underground nuclear power station has the great advantage that the radioactive pollution caused by the uncontrolled and immediate release of airborne radioactivity to the external environment in a serious accident can be prevented. To this end, among the prior art, dry sand bed filtration and wet venturi filter are mostly used to make filtration system, but this kind of mode lacks the flexibility, and the filter capacity is not adjustable, and the secondary radioactive contamination filter core that causes is inconvenient to be changed.
The Chinese utility model patent application (publication date: 2017, 02, 15 and publication number: CN106409370A) discloses a low-medium radioactive waste disposal warehouse and a method with airborne radioactivity filtering and discharging functions, wherein radioactive particles in airborne radioactivity are filtered by utilizing air-permeable concrete and a filtering fine sand layer, but the filtering generates a radioactive sand layer which is difficult to process, and the filtering capacity is determined and can not be replaced.
The Chinese utility model patent application (published: 24.09/2014; published: CN104064238A) discloses a passive water washing and filtering system for airborne radioactive effluents of underground nuclear power stations, which utilizes water washing to filter radioactive particles in airborne radioactivity, but the filtering capacity of the scheme is single, different filtering capacities cannot be selected according to the severity of accidents, once the passive water washing and filtering system is put into use, even if a small amount of airborne radioactive substances are filtered, the system is also polluted as a whole, and the system cannot be replaced in service.
Disclosure of Invention
The utility model aims at providing an underground nuclear power station airborne radioactivity filtration system to the not enough of above-mentioned technique, can set up the filter quantity of access according to accident severity nimble mobile, and realize changing long service life in labour easily.
In order to achieve the purpose, the airborne radioactive filtering system of the underground nuclear power station designed by the utility model comprises a containment vessel positioned in an underground rock stratum, a pressure relief cavern and a ground pool positioned on the ground, a spare pipeline set and a filtering device are arranged in the pressure relief cavern, the filtering device comprises an air inlet, an air outlet and a Venturi filter set which is respectively communicated with the air inlet and the air outlet in an end-to-end manner, the venturi filter bank includes a plurality of filters in line communication through the spare line group, a standby stop valve group is arranged on the standby pipeline group, the standby stop valve group comprises a plurality of stop valves which are arranged on the pipelines and realize the series-parallel connection of the filters through opening and closing, the air inlet is communicated with the interior of the containment vessel through a pressure relief pipe, the air outlet is communicated with a ground chimney through a pressure relief discharge pipeline, the filter unit is also connected to the surface reservoir via a surface injection line and a surface discharge line.
Preferably, the upper part of the pressure relief cavern is provided with a control crane for hoisting the filter.
Preferably, the pipelines in the spare pipeline group are arranged in a net-shaped cross connection mode, the connection nodes of the pipelines are separated by the stop valves, and after the filters in the venturi filter group are communicated through the pipelines, any plurality of filters can be connected in series and in parallel through the opening and closing of the stop valves.
Preferably, the pipelines in the spare pipeline group are arranged into four transverse rows and four longitudinal rows in a cross connection mode, the connection nodes of the four transverse rows of pipelines are separated by the stop valves, the last three connection nodes of the four longitudinal rows of pipelines are separated by the stop valves, the venturi filter group comprises nine filters, nine filters are arranged in three transverse rows and three longitudinal rows, one filter is arranged between every two connection nodes on the pipelines of the last three transverse rows, the stop valve between the two connection nodes is located at the air inlet end of the filter, and flexible access of at least one filter and at most nine filters can be achieved.
Preferably, the connection point of the ground injection line and the filtering device is located at the lower part of the filtering device, and the connection point of the ground discharge line and the filtering device is located at the upper part of the filtering device, so that natural circulation can be realized by fully utilizing the natural driving force of density reduction and rise after the cooling water is heated.
Preferably, the filter means is located in a pit at the bottom of the pressure relief cavern to facilitate the introduction of water from the surface pond into the filter means.
Preferably, a radioactivity monitor is arranged on the pressure relief discharge pipeline to detect radioactivity of the filtered gas.
Preferably, the pressure relief pipe is provided with an air pump for controlling the gas generated in the containment.
Compared with the prior art, the utility model, have following advantage:
1. the buried venturi filter group is arranged in the pressure relief cavity by utilizing the radiation shielding function of the rock mass, and the filters in the venturi filter group are connected in series and in parallel by selectively opening and closing the standby stop valve group, so that the number of the connected filters can be flexibly and flexibly set according to the severity of an accident, the resources are saved, and the service life is prolonged;
2. through controlling the aerial crane, the in-service replacement of the filter is easily realized, and the service life of the filter device is further prolonged.
Drawings
FIG. 1 is a schematic structural diagram of the airborne radioactive filtering system of the underground nuclear power station;
FIG. 2 is a schematic diagram of an embodiment of a venturi filter bank of the filter apparatus of FIG. 1.
The components in the figures are numbered as follows:
the underground rock stratum 1, the containment vessel 2, the pressure relief cavern 3, the ground pool 4, the spare pipeline set 5, the filtering device 6, the pressure relief pipe 7, the pressure relief discharge pipeline 8, the ground chimney 9, the ground injection pipeline 10, the ground discharge pipeline 11, the control gantry crane 12, the radioactivity monitoring instrument 13, the air pump 14, the spare stop valve set 15, the pipeline 51, the air inlet 61, the air outlet 62, the venturi filter set 63, the first stop valve 101, the second stop valve 102, the third stop valve 103, the fourth stop valve 104, the fifth stop valve 105, the sixth stop valve 106, the seventh stop valve 107, the eighth stop valve 108, the ninth stop valve 109, the tenth stop valve 110, the eleventh stop valve 111, the twelfth stop valve 112, the thirteenth stop valve 201, the fourteenth stop valve 202, the fifteenth stop valve 203, the sixteenth stop valve 204, the seventeenth stop valve 205, the eighteenth stop valve 206, the nineteenth stop valve 207, A twentieth cut-off valve 208, a first filter 301, a second filter 302, a third filter 303, a fourth filter 304, a fifth filter 305, a sixth filter 306, a seventh filter 307, an eighth filter 308, and a ninth filter 309.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments.
As shown in fig. 1 and fig. 2, the airborne radioactive filtering system of the underground nuclear power station of the present invention comprises a containment vessel 2 located in an underground rock formation 1, a pressure relief cavern 3 and a ground pool 4 located on the ground, wherein a standby pipeline set 5 and a filtering device 6 are arranged in the pressure relief cavern 3, the filtering device 6 is located in a pit at the bottom of the pressure relief cavern 3, the filtering device 6 comprises an air inlet 61, an air outlet 62 and a venturi filter set 63 connected with the air inlet 61 and the air outlet 62 respectively from head to tail, the venturi filter set 63 comprises a plurality of filters connected through a pipeline 51 in the standby pipeline set 5, a standby stop valve set 15 is arranged on the standby pipeline set 5, the standby stop valve set 15 comprises a plurality of stop valves arranged on the pipeline 51 for realizing series-parallel connection of the filters through opening and closing, the air inlet 61 is communicated with the containment vessel 2 through a pressure relief pipe 7, the air outlet 62 is communicated with a ground chimney 9 through a pressure relief discharge pipeline 8, a radioactivity monitoring instrument 13 is arranged on the pressure relief discharge pipeline 8, and the filtering device 6 is also connected with a ground water pool 4 through a ground injection pipeline 10 and a ground discharge pipeline 11, wherein the communication point of the ground injection pipeline 10 and the filtering device 6 is positioned at the lower part of the filtering device 6, and the communication point of the ground discharge pipeline 11 and the filtering device 6 is positioned at the upper part of the filtering device 6.
In addition, the pipelines 51 in the spare pipeline group 5 are arranged in a net-shaped cross connection manner, the connection nodes of the pipelines 51 are separated by stop valves, and after the filters in the venturi filter group 63 are communicated through the pipelines 51, any plurality of filters can be connected in series or in parallel through the opening and closing of the stop valves.
In the present embodiment, the pipelines 51 in the spare pipeline group 5 are arranged in four transverse rows and four longitudinal rows, the connection nodes of the four transverse rows of the pipelines 51 are all separated by stop valves, and the upper three connection nodes of the four longitudinal rows of the pipelines 51 are all separated by stop valves, specifically, as shown in fig. 2, a transverse first stop valve 101, a second stop valve 102, a third stop valve 103, a fourth stop valve 104, a fifth stop valve 105, a sixth stop valve 106, a seventh stop valve 107, an eighth stop valve 108, a ninth stop valve 109, a tenth stop valve 110, an eleventh stop valve 111, a twelfth stop valve 112, a longitudinal thirteenth stop valve 201, a fourteenth stop valve 202, a fifteenth stop valve 203, a sixteenth stop valve 204, a seventeenth stop valve 205, an eighteenth stop valve 206, a nineteenth stop valve 207, and a twentieth stop valve 208, the venturi filter group 63 includes nine filters, the nine filters are arranged in three transverse rows and three longitudinal rows, one filter is arranged between every two connecting nodes on the pipeline of the upper three transverse rows, the stop valve between the two connecting nodes is positioned at the air inlet end of the filter, specifically, as shown in fig. 2, a first filter 301, a second filter 302, a third filter 303, a fourth filter 304, a fifth filter 305, a sixth filter 306, a seventh filter 307, an eighth filter 308 and a ninth filter 309 are arranged in sequence, and in addition, a control crane 12 for hoisting the filters is arranged at the upper part of the pressure relief chamber 3.
After a serious accident occurs in the ground, when only a small amount of airborne radioactive waste is released, the filtering and discharging requirements can be met only by two filters according to the calculation of the amount of the released airborne radioactive waste, if two filters, namely the eighth filter 308 and the ninth filter 309, are selected to be connected in series for use, at the moment, the opening and closing of the stop valves are controlled by the standby stop valve group 15, the eighth filter 308 and the ninth filter 309 are connected in series, namely the thirteenth stop valve 201, the seventeenth stop valve 205, the tenth stop valve 110, the eighth stop valve 108 and the ninth stop valve 109 are opened, and other stop valves are closed, namely the series connection of the eighth filter 308 and the ninth filter 309 in the venturi filter group 63 is realized. At this time, the air pump 14 is opened, the airborne radioactivity generated in the containment 2 is discharged into the filtering device 6 through the pressure relief pipe 7 under the action of the air pump 14, the airborne radioactivity is sequentially filtered through the air inlet 61, the thirteenth stop valve 201, the seventeenth stop valve 205, the tenth stop valve 110, the eighth stop valve 108, the eighth filter 308, the ninth stop valve 109, the ninth filter 309 and the air outlet 62 in the filtering device 6, and the filtered gas is monitored by the radioactivity monitor 13 to reach the standard and then is discharged from the ground chimney 9 through the pressure relief discharge pipe 8. During the filtering process, the temperature in the filtering device 6 is raised due to radioactive filtering, after the temperature is raised, the cooling water in the ground water tank 4 flows in from the bottom of the filtering device 6 through the ground injection pipeline 10, and is discharged to the ground water tank 4 from the top of the filtering device 6 through the ground discharge pipeline 11 under the pushing of density difference after being heated, so that the heat release discharge function is completed.
Similarly, when a large amount of airborne radioactive waste is generated after a severe accident occurs in a local area, five filters are required to meet the filtering emission requirement according to the amount of the released airborne radioactive waste, and at this time, five filters, namely a first filter 301, a second filter 302, a seventh filter 307, an eighth filter 308 and a ninth filter 309 are selected to be used in combination with the operation residual capacity of the filters in the venturi filter group 63, the first filter 301 and the second filter 302 are connected in series, the seventh filter 307 and the eighth filter 308 are connected in series, and the two sets of series filters are connected in parallel and then connected in series with the ninth filter 309. In this case, the opening and closing of the shutoff valves are controlled by the backup shutoff valve group 15, and this object can be easily achieved as well, specifically, the first shutoff valve 101, the second shutoff valve 102, the fifteenth shutoff valve 203, the nineteenth shutoff valve 207, the thirteenth shutoff valve 201, the seventeenth shutoff valve 205, the seventh shutoff valve 107, the eighth shutoff valve 108, and the ninth shutoff valve 109 are opened, and the other shutoff valves are closed. At this time, the air pump 14 is turned on, the airborne radioactivity generated in the containment 2 is discharged into the filtering device 6 through the pressure relief pipe 7 under the action of the air pump 14, the airborne radioactivity is filtered through the first filter 301, the second filter 302, the seventh filter 307, the eighth filter 308 and the ninth filter 309 in the filtering device 6, and the filtered gas is monitored by the radioactivity monitor 13 to reach the standard and then is discharged from the ground chimney 9 through the pressure relief discharge pipeline 8. During the filtering process, the temperature in the filtering device 6 is raised due to radioactive filtering, after the temperature is raised, the cooling water in the ground water tank 4 flows in from the bottom of the filtering device 6 through the ground injection pipeline 10, and is discharged to the ground water tank 4 from the top of the filtering device 6 through the ground discharge pipeline 11 under the pushing of density difference after being heated, so that the heat release discharge function is completed.
The above two different filter series-parallel connection modes are adopted, when an accident occurs, according to the amount of released airborne radioactive wastes, the operation residual capacity of the filters in the venturi filter group 63 is combined, the use number of the filters can be reasonably arranged, and the filters can be connected in series or in parallel, so that the filters are consumed in a balanced manner, the filtering efficiency and the quality are ensured, and meanwhile, the service life of the filtering device 6 can be greatly prolonged.
In addition, in the later stage of a serious accident, after the airborne radioactive filtration is finished, the filter with low filtration residual capacity is lifted out and replaced by controlling the navigation crane 12 according to the filtration residual capacity of the filter in the venturi filter group 63, so that the in-service replacement of the filter is realized, and the service life of the filter device 6 is further prolonged.
The utility model discloses airborne radioactive filtration system of underground nuclear power station utilizes the radiation shielding function setting of rock mass to bury formula venturi filter group 63 under in release cavern 3 to through the selective switching of reserve stop valve group 15, realize the series-parallel connection of filter in venturi filter group 63, can set up the filter quantity of inserting according to accident severity flexibly, practiced thrift the resource, lengthened life; meanwhile, the in-service replacement of the filter is easily realized by controlling the crane 12, and the service life of the filter device 6 is further prolonged.
Claims (8)
1. The utility model provides an airborne radioactive filtration system of underground nuclear power station, includes containment (2), release cavern (3) that are located underground rock stratum (1) and is located subaerial ground pond (4), its characterized in that: the pressure relief cavern (3) is internally provided with a standby pipeline group (5) and a filtering device (6), the filtering device (6) comprises an air inlet (61), an air outlet (62) and a venturi filter group (63) communicated with the air inlet (61) and the air outlet (62) from head to tail, the venturi filter group (63) comprises a plurality of filters communicated through an inner pipeline (51) of the standby pipeline group (5), the standby pipeline group (5) is provided with a standby stop valve group (15), the standby stop valve group (15) comprises a plurality of stop valves arranged on the pipeline (51) and used for realizing series-parallel connection of the filters through opening and closing, the air inlet (61) is communicated with the containment vessel (2) through a pressure relief pipe (7), and the air outlet (62) is communicated with a ground chimney (9) through a pressure relief discharge pipeline (8), the filter device (6) is also connected with the ground pool (4) through a ground injection pipeline (10) and a ground discharge pipeline (11).
2. The airborne radioactive filtering system of an underground nuclear power plant as recited in claim 1, wherein: and a control crane (12) for hoisting the filter is arranged at the upper part of the pressure relief cavern (3).
3. The airborne radioactive filtering system of an underground nuclear power plant as recited in claim 1, wherein: the pipeline (51) in the spare pipeline group (5) is arranged in a net-shaped cross connection mode, the connection nodes of the pipeline (51) are all separated through the stop valves, and after filters in the Venturi filter group (63) are communicated through the pipeline (51), the filters can be connected in series and in parallel through the opening and closing of the stop valves.
4. The airborne radioactive filtering system of an underground nuclear power plant as recited in claim 3, wherein: pipeline (51) in spare pipeline group (5) are arranged four horizontal rows and four vertical rows cross connection, all pass through between the connected node of four horizontal rows of pipeline (51) the stop valve separates, all pass through between the last three connected node of four vertical rows of pipeline (51) the stop valve separates, venturi filter group (63) include nine filters, nine the filter is arranged according to three horizontal rows and three vertical rows, go up three horizontal rows all be equipped with one between per two connected node on the pipeline the filter, between two connected node the stop valve is located the inlet end of filter.
5. The airborne radioactive filtering system of an underground nuclear power plant as recited in claim 1, wherein: the point of communication of the surface injection line (10) with the filtering device (6) is located in the lower part of the filtering device (6), and the point of communication of the surface discharge line (11) with the filtering device (6) is located in the upper part of the filtering device (6).
6. The airborne radioactive filtering system of an underground nuclear power plant as recited in claim 1, wherein: the filtering device (6) is positioned in a pit at the bottom of the pressure relief cavern (3).
7. The airborne radioactive filtering system of an underground nuclear power plant as recited in claim 1, wherein: and a radioactivity monitoring instrument (13) is arranged on the pressure relief discharge pipeline (8).
8. The airborne radioactive filtering system of an underground nuclear power plant as recited in claim 1, wherein: an air pump (14) is arranged on the pressure relief pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921480429.XU CN210964424U (en) | 2019-09-06 | 2019-09-06 | Airborne radioactivity filtering system of underground nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921480429.XU CN210964424U (en) | 2019-09-06 | 2019-09-06 | Airborne radioactivity filtering system of underground nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210964424U true CN210964424U (en) | 2020-07-10 |
Family
ID=71443763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921480429.XU Active CN210964424U (en) | 2019-09-06 | 2019-09-06 | Airborne radioactivity filtering system of underground nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210964424U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110523182A (en) * | 2019-09-06 | 2019-12-03 | 长江勘测规划设计研究有限责任公司 | Underground nuclear power station airborne radioactivity filtration system |
-
2019
- 2019-09-06 CN CN201921480429.XU patent/CN210964424U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110523182A (en) * | 2019-09-06 | 2019-12-03 | 长江勘测规划设计研究有限责任公司 | Underground nuclear power station airborne radioactivity filtration system |
| CN110523182B (en) * | 2019-09-06 | 2024-04-12 | 长江勘测规划设计研究有限责任公司 | Airborne radioactive filtering system of underground nuclear power station |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102111814B1 (en) | Filter for a nuclear reactor containment ventilation system | |
| US4859405A (en) | Filtered venting and decay heat removing apparatus and system for containment structures, and method of operation | |
| CN103590924B (en) | High-rigidity propellant management device for large surface tension storage box | |
| KR101150675B1 (en) | The constant filtration system which has a backwash-water and the filtration method | |
| CN110655420B (en) | Large organic household garbage storage yard and use method thereof | |
| CN210167124U (en) | Containment pressure relief and filtration system | |
| CN210964424U (en) | Airborne radioactivity filtering system of underground nuclear power station | |
| JP6310987B2 (en) | Radioactive capture system and method for containment of serious accidents in light water reactors (LWR) | |
| CN107180661A (en) | A kind of spent fuel transport container residual heat removal facility | |
| CN110960904A (en) | In-situ remediation well and system for treating underground water pollution | |
| CN110523182B (en) | Airborne radioactive filtering system of underground nuclear power station | |
| CN203966584U (en) | The non-active washing filtering system of underground nuclear power station airborne radioactivity effluent | |
| CN103426493B (en) | The drip of radioactive spent resin free water is except device and drip are except method | |
| WO2019184932A1 (en) | Underground neutron-energy power station | |
| CN204865234U (en) | Rain water filtering device | |
| ITTO20110763A1 (en) | SYSTEM FOR CATCHING AND / OR ABATEMENT OF HARMFUL EMISSIONS IN AN ATMOSPHERE FROM A SYSTEM IN THE EVENT OF AN ACCIDENT, PARTICULARLY A NUCLEAR SYSTEM | |
| CN108154945A (en) | A kind of system that containment gas filtration discharge is realized under major accident operating mode | |
| CN210039651U (en) | Reactor cavity injection system of underground nuclear power station | |
| CN210956195U (en) | Serious accident waste liquid collecting and treating system for underground nuclear power station | |
| CN105056616A (en) | Rainwater filter | |
| CN210021446U (en) | Pit type air filtering and purifying device with low circulation resistance | |
| KR100741417B1 (en) | Loading machines for ion exchange resin | |
| CN213983015U (en) | Tritium-containing heavy water conveying device | |
| CN210837201U (en) | Marine nuclear power platform radioactive waste treatment cabin section | |
| CN210795948U (en) | Groundwater soil combined remediation device for LAS (laser induced laser absorption Spectroscopy) pollution area |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |