CN114664469A - Nuclear power plant reactor pool radioactive cleaning wastewater filtering device - Google Patents
Nuclear power plant reactor pool radioactive cleaning wastewater filtering device Download PDFInfo
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- CN114664469A CN114664469A CN202011537920.9A CN202011537920A CN114664469A CN 114664469 A CN114664469 A CN 114664469A CN 202011537920 A CN202011537920 A CN 202011537920A CN 114664469 A CN114664469 A CN 114664469A
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- shielding plate
- lead shielding
- pipeline
- filter chamber
- nuclear power
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
- G21F9/06—Processing
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- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention belongs to the technical field of nuclear power radiation protection, and particularly relates to a filtering device for radioactive cleaning wastewater of a reactor pool of a nuclear power plant. Comprises a filter cell top cover, a filter cell, a water inlet pipeline, a liquid outlet main pipe, a water outlet pipeline, a sewage discharge pipeline and a shielding box body. The device can filter and enrich radioactive particles in the high-radioactivity level cleaning wastewater, reduce the radiation level of the wastewater by replacing the filter element, and reduce the influence of the radioactive particle enrichment in the filter chamber on peripheral areas and workers by arranging the shielding box body.
Description
Technical Field
The invention belongs to the technical field of nuclear power radiation protection, and particularly relates to a filtering device for radioactive cleaning wastewater of a reactor pool of a nuclear power plant.
Background
During the nuclear power plant refueling overhaul period, the bottom and the inner wall of the reactor core water tank and the component water tank can be cleaned, and cleaning wastewater with high radioactivity level is drained from the drainage pipelines of the reactor core water tank and the component water tank to related systems in a gravity drainage mode.
At present, high-radioactivity level cleaning wastewater is powered by a pump body, is led out from a drainage pipeline and then is filtered to remove most radioactivity and is led into a related system so as to reduce the radioactivity level of a primary circuit, shorten the discharge time of the radioactive wastewater and reduce the purification pressure of a purification unit of the related system. However, the existing filtering device has the following disadvantages: 1. the installation position of a water outlet pipeline of the filter element cavity is higher, so that the bottom of the filter element cavity is easy to enrich radioactive particles with high radiation level; 2. the sewage discharge pipeline is bent at a plurality of positions and has extremely fine pipe diameter, which is not beneficial to discharging the high-radiation level radioactive particles enriched at the bottom of the cavity of the filter element; 3. the lead shielding is thick and cannot be disassembled, so that the movement and transportation are slow, the transportation time is prolonged, and the irradiated dose of transportation personnel is increased.
Therefore, it is desirable to design a filtering apparatus for radioactive cleaning wastewater of a reactor pool in a nuclear power plant to solve the above problems.
Disclosure of Invention
The invention aims to provide a reactor pool radioactive cleaning wastewater filtering device for a nuclear power plant, which is used for reducing the radioactivity level of a primary circuit.
The technical scheme of the invention is as follows:
a nuclear power plant reactor pool radioactive cleaning wastewater filtering device comprises a filter chamber top cover, a filter chamber, a water inlet pipeline, a liquid outlet main pipe, a water outlet pipeline, a sewage discharge pipeline and a shielding box body;
the top cover of the filter chamber is buckled above the filter chamber;
a filter element is arranged in the filter chamber;
the bottom surface of the small filter chamber is a spherical surface, and the central position of the bottom surface is the lowest point;
a liquid inlet is formed in the upper part of the side wall of the small filter chamber and is communicated with a water inlet pipeline;
a water inlet pipeline isolating valve is arranged on the water inlet pipeline;
a liquid outlet is formed in the center of the bottom surface of the small filter chamber and is communicated with a liquid outlet main pipe, and two branch pipes led out from the liquid outlet main pipe are respectively a water outlet pipeline and a sewage discharge pipeline;
the water outlet pipeline is provided with a water outlet pipeline isolating valve, and the sewage draining pipeline is provided with a sewage draining pipeline isolating valve;
the shielding box body is arranged outside the small filter chamber and comprises an upper lead shielding plate, a lower lead shielding plate, a left lead shielding plate, a right lead shielding plate, a front lead shielding plate and a rear lead shielding plate;
the lower lead shielding plate is fixedly connected with the rear lead shielding plate;
the liquid outlet header pipe penetrates out of the lead shielding plate at the lower side;
the water inlet pipeline penetrates out of the rear lead shielding plate, and the water inlet pipeline isolation valve is positioned on the outer side of the rear lead shielding plate;
setting up a cubic frame by taking the lower lead shielding plate and the rear lead shielding plate as basic surfaces, and processing slots on the frame to form a left lead shielding plate slot, a right lead shielding plate slot, an upper lead shielding plate slot and a front lead shielding plate slot;
the lead shielding plate on the left side, the lead shielding plate on the right side, the lead shielding plate on the upper side and the lead shielding plate on the front side are respectively inserted into the corresponding slots, and the lead shielding plates on the lower side and the lead shielding plate on the rear side form a box structure together.
Preferably, bottom casters are provided at four corners of the bottom surface of the lower lead shielding plate, respectively.
Preferably, the two bottom casters at the front side of the bottom surface of the lower lead shielding plate have a movement guide function.
Preferably, the filter chamber top cover is fixedly connected with the filter chamber through a buckle.
Preferably, handles are respectively arranged on the left lead shielding plate, the right lead shielding plate, the upper lead shielding plate and the front lead shielding plate, so as to facilitate field adjustment.
Preferably, the liquid inlet in the side wall of the filter chamber is positioned higher than the filter element.
Preferably, when the wastewater is filtered, the high-radioactivity horizontal cleaning wastewater is led out from the drainage pipeline through the temporary hose and then is connected with the water inlet pipeline, enters the filter chamber through the control of the water inlet pipeline isolation valve for filtering, and is discharged through the water outlet pipeline through the control of the water outlet pipeline isolation valve; and after the cleaning wastewater is completely filtered, the sewage after the filter chamber is cleaned is discharged through a sewage discharge pipeline by controlling through a sewage discharge pipeline isolating valve.
The invention has the beneficial effects that:
(1) the device can filter and enrich radioactive particles in the high-radioactivity level cleaning wastewater, reduce the radiation level of the wastewater by replacing the filter element, and reduce the influence of the radioactive particle enrichment in the filter chamber on peripheral areas and workers by arranging the shielding box body.
(2) The thick and heavy shielding plate in the device can be flexibly assembled and disassembled, so that the moving flexibility of the device can be improved.
(3) The device of the invention arranges the liquid outlet main pipe at the bottommost part of the filter chamber, thereby avoiding the deposition of high-radioactivity horizontal particles in the filter chamber and meeting the requirement of repeated use in a nuclear power site.
Drawings
FIG. 1 is a schematic view of a filtration apparatus;
fig. 2 is a schematic plan-view development of the movable lead shielding plate.
In the figure: 1. a filter cell top cover; 2. a filter cell; 3. a left front foot guide wheel; 4. an outlet line isolation valve; 5. an outlet line; 6. a right front foot guide wheel; 7. a blowdown line isolation valve; 8. a blowdown line; 9. a lower lead shielding plate; 10. a left rear bottom caster; 11. a right rear bottom caster; 12. a rear lead shielding plate; 13. a water inlet line isolation valve; 14. a water inlet line; 15. a lead shielding plate slot on the left side; 16. a right lead shielding plate slot; 17. an upper lead shielding plate slot; 18. a front lead shielding plate slot; 19. a left lead shield plate; 20. a left lead shielding plate handle; 21. a right lead shield plate; 22. a right lead shielding plate handle; 23. a front lead shield plate; 24. a front lead shielding plate handle; 25. an upper lead shield plate; 26. and the upper lead shielding plate handle.
Detailed Description
The invention is further described in detail below with reference to the drawings and specific embodiments.
The filtering device for the radioactive cleaning wastewater of the reactor pool of the nuclear power plant as shown in the figures 1-2 comprises a filter chamber top cover 1, a filter chamber 2, a water inlet pipeline 14, a liquid outlet main pipe, a water outlet pipeline 5, a sewage discharge pipeline 8, a shielding box body and bottom pulleys.
The filter cell top cover 1 is buckled above the filter cell 2 and fixed by a buckle. A filter cartridge is placed inside the filter chamber 2. When the filter cartridge needs to be replaced, the filter chamber top cover 1 is opened to perform the replacement operation. The bottom surface of the small filter chamber 2 is a spherical surface, and the central position of the bottom surface is the lowest point.
The upper part of the side wall of the filter chamber 2 is provided with a liquid inlet which is communicated with a water inlet pipeline 14. The liquid inlet is higher than the filter element. And a water inlet pipeline isolation valve 13 is arranged on the water inlet pipeline 14 and used for controlling the on-off of the water inlet pipeline 14.
A liquid outlet is arranged at the center of the bottom surface of the small filter chamber 2 and is communicated with a liquid outlet main pipe, and two branch pipes led out from the liquid outlet main pipe are respectively a water outlet pipeline 5 and a sewage discharge pipeline 8. The water outlet pipeline 5 is provided with a water outlet pipeline isolation valve 4, and the sewage discharge pipeline 8 is provided with a sewage discharge pipeline isolation valve 7.
The shielding box body is arranged outside the small filter chamber 2 and comprises an upper lead shielding plate 25, a lower lead shielding plate 9, a left lead shielding plate 19, a right lead shielding plate 21, a front lead shielding plate 23 and a rear lead shielding plate 12.
The lower lead shielding plate 9 and the rear lead shielding plate 12 are fixedly connected with each other due to the pipeline penetration. The liquid outlet header pipe penetrates out of the lead shielding plate 9 at the lower side. The water inlet pipeline 14 penetrates out of the rear lead shielding plate 12, and the water inlet pipeline isolation valve 13 is located on the outer side of the rear lead shielding plate 12.
Bottom casters are respectively arranged at four corners of the bottom surface of the lower lead shielding plate 9, wherein the two bottom casters at the front side have a movement guiding function. The four bottom casters are respectively a left front bottom guide wheel 3, a right front bottom guide wheel 6, a left rear bottom caster 10 and a right rear bottom caster 11.
Follow the edge of downside plumbous shield plate 9 and rear side plumbous shield plate 12 is equipped with the channel-section steel respectively, simultaneously with downside plumbous shield plate 9 and rear side plumbous shield plate 12 be the basal plane, adopt the channel-section steel to set up the cube frame, constitute left side plumbous shield plate slot 15, right side plumbous shield plate slot 16, upside plumbous shield plate slot 17 and front side plumbous shield plate slot 18. The left lead shielding plate 19, the right lead shielding plate 21, the upper lead shielding plate 25 and the front lead shielding plate 23 are respectively inserted into the corresponding slots, and form a box structure together with the lower lead shielding plate 9 and the rear lead shielding plate 12.
The lead shielding plate handle is characterized in that a left lead shielding plate handle 20, a right lead shielding plate handle 22, an upper lead shielding plate handle 26 and a front lead shielding plate handle 24 are respectively arranged on the left lead shielding plate 19, the right lead shielding plate 21, the upper lead shielding plate 25 and the front lead shielding plate 23, so that the movable lead shielding plate can be conveniently installed or disassembled on site, and the installation quantity of the lead shielding plates on the slots can be flexibly adjusted according to different requirements of the site on the moving time and the shielding effect.
When the wastewater is filtered, the high-radioactivity horizontal cleaning wastewater is led out from a drainage pipeline through a temporary hose and then is connected with a water inlet pipeline 14, is controlled to enter a filter chamber 2 through a water inlet pipeline isolation valve 13 for filtering, and is controlled to be discharged through a water outlet pipeline 5 through a water outlet pipeline isolation valve 4; and after the cleaning wastewater is completely filtered, cleaning the filter chamber 2, and discharging the cleaned sewage from a sewage discharge pipeline 8 under the control of a sewage discharge pipeline isolation valve 7.
Claims (7)
1. The utility model provides a nuclear power plant's reactor pond radioactivity cleaning waste water filter equipment which characterized in that: comprises a filter chamber top cover (1), a filter chamber (2), a water inlet pipeline (14), a liquid outlet main pipe, a water outlet pipeline (5), a sewage discharge pipeline (8) and a shielding box body;
the filter chamber top cover (1) is buckled above the filter chamber (2);
a filter element is arranged in the filter chamber (2);
the bottom surface of the small filter chamber (2) is a spherical surface, and the central position of the bottom surface is the lowest point;
a liquid inlet is arranged at the upper part of the side wall of the filter chamber (2) and is communicated with a water inlet pipeline (14);
a water inlet pipeline isolating valve (13) is arranged on the water inlet pipeline (14);
a liquid outlet is formed in the center of the bottom surface of the small filter chamber (2) and is communicated with a liquid outlet main pipe, and two branch pipes led out from the liquid outlet main pipe are respectively a water outlet pipeline (5) and a sewage discharge pipeline (8);
a water outlet pipeline isolation valve (4) is arranged on the water outlet pipeline (5), and a sewage drainage pipeline isolation valve (7) is arranged on the sewage drainage pipeline (8);
the shielding box body is arranged outside the small filter chamber (2) and comprises an upper lead shielding plate (25), a lower lead shielding plate (9), a left lead shielding plate (19), a right lead shielding plate (21), a front lead shielding plate (23) and a rear lead shielding plate (12);
the lower lead shielding plate (9) is fixedly connected with the rear lead shielding plate (12);
the liquid outlet header pipe penetrates out of the lead shielding plate (9) at the lower side;
the water inlet pipeline (14) penetrates out of the rear lead shielding plate (12), and the water inlet pipeline isolation valve (13) is positioned on the outer side of the rear lead shielding plate (12);
a cubic frame is erected by taking the lower lead shielding plate (9) and the rear lead shielding plate (12) as basic surfaces, and slots are processed on the frame to form a left lead shielding plate slot (15), a right lead shielding plate slot (16), an upper lead shielding plate slot (17) and a front lead shielding plate slot (18);
the lead shielding plate structure is characterized in that the left lead shielding plate (19), the right lead shielding plate (21), the upper lead shielding plate (25) and the front lead shielding plate (23) are respectively inserted into corresponding slots, and the left lead shielding plate, the right lead shielding plate, the upper lead shielding plate and the front lead shielding plate form a box structure together with the lower lead shielding plate (9) and the rear lead shielding plate (12).
2. The nuclear power plant reactor pool radioactive cleaning wastewater filtering device of claim 1, wherein: bottom casters are respectively arranged at four corners of the bottom surface of the lower lead shielding plate (9).
3. The nuclear power plant reactor pool radioactive cleaning wastewater filtering device of claim 2, wherein: and the two bottom casters at the front side of the bottom surface of the lower lead shielding plate (9) have the function of moving and guiding.
4. The nuclear power plant reactor pool radioactive cleaning wastewater filtering device of claim 1, wherein: the filter small chamber top cover (1) is fixedly connected with the filter small chamber (2) through a buckle.
5. The nuclear power plant reactor pool radioactive cleaning wastewater filtering device of claim 1, wherein: handles are respectively arranged on the left lead shielding plate (19), the right lead shielding plate (21), the upper lead shielding plate (25) and the front lead shielding plate (23) so as to facilitate field adjustment.
6. The nuclear power plant reactor pool radioactive cleaning wastewater filtering device of claim 1, wherein: the liquid inlet on the side wall of the filter chamber (2) is higher than the filter element.
7. The device for filtering the radioactive cleaning wastewater in the reactor pool of the nuclear power plant as claimed in any one of claims 1 to 6, wherein: when the wastewater is filtered, the high-radioactivity horizontal cleaning wastewater is led out from a drainage pipeline through a temporary hose and then is connected with a water inlet pipeline (14), is controlled to enter a filter chamber (2) through a water inlet pipeline isolation valve (13) for filtering, and is controlled to be discharged through a water outlet pipeline (5) through a water outlet pipeline isolation valve (4); after the cleaning wastewater is completely filtered, the sewage after the filter chamber (2) is cleaned is controlled by a sewage drainage pipeline isolation valve (7) and is discharged by a sewage drainage pipeline (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011537920.9A CN114664469A (en) | 2020-12-23 | 2020-12-23 | Nuclear power plant reactor pool radioactive cleaning wastewater filtering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011537920.9A CN114664469A (en) | 2020-12-23 | 2020-12-23 | Nuclear power plant reactor pool radioactive cleaning wastewater filtering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114664469A true CN114664469A (en) | 2022-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011537920.9A Pending CN114664469A (en) | 2020-12-23 | 2020-12-23 | Nuclear power plant reactor pool radioactive cleaning wastewater filtering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114664469A (en) |
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2020
- 2020-12-23 CN CN202011537920.9A patent/CN114664469A/en active Pending
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