CN113230711A - Water filter for treating radioactive water - Google Patents
Water filter for treating radioactive water Download PDFInfo
- Publication number
- CN113230711A CN113230711A CN202110405367.1A CN202110405367A CN113230711A CN 113230711 A CN113230711 A CN 113230711A CN 202110405367 A CN202110405367 A CN 202110405367A CN 113230711 A CN113230711 A CN 113230711A
- Authority
- CN
- China
- Prior art keywords
- filter
- water
- filter element
- shell
- filter core
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 121
- 230000002285 radioactive effect Effects 0.000 title claims abstract description 39
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000003365 glass fiber Substances 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims description 11
- 229920002943 EPDM rubber Polymers 0.000 claims description 3
- 239000012535 impurity Substances 0.000 abstract description 13
- 239000002245 particle Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 3
- 230000004807 localization Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/15—Supported filter elements arranged for inward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/30—Filter housing constructions
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/34—Seals or gaskets for filtering elements
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/006—Radioactive compounds
Abstract
The invention relates to a water filter for treating radioactive water, which belongs to the technical field of water treatment in nuclear industry and comprises a shell, wherein the upper end of the shell is provided with a shell end cover, and a filter element assembly and a filter element support frame are arranged in the shell; the shell is provided with a water inlet, a water outlet and an exhaust port; the filter element group spare includes the filter core, and the lower extreme is provided with filter core upper end cover and filter core lower extreme respectively on the filter core, and the filter core surface covers there is the filter core protection net, is equipped with the filter core water inlet in the middle of the filter core upper end cover, and the filter core upper end cover column face is opened there is the annular groove, is provided with the sealing washer in the recess. The invention ensures that more particle impurities with radioactivity are captured by adopting an inward-entering and outward-going mode, and simultaneously ensures that the loss of the particle impurities with radioactivity is reduced when the waste filter element is removed and disposed; the Y-shaped sealing ring is adopted, so that the sealing effect of the filter element can be improved, and the service life of the filter element can be prolonged; the glass fiber filter material with different modified filter precisions and the multi-pleat structure are adopted, so that the filter precision requirements of various water treatment systems of a nuclear power plant can be met.
Description
Technical Field
The invention belongs to the technical field of nuclear industry water treatment, and particularly relates to a water filter for treating radioactive water.
Background
The medium in the nuclear island process system of the nuclear power plant is radioactive water, and a water filter of the radioactive water system is mainly used for removing corrosion products and suspended solid particles existing in water in a colloid form in a primary loop and a secondary loop of the nuclear power plant, and is key equipment for ensuring water quality, reducing the radioactivity level of the medium and the environment and improving the working environment. At present, the radioactive water filter for the process water loop of the nuclear power plant is commercialized, and the manufacturers for providing the filter only comprise a few companies such as Pall company in the united states, 3L company in canada and the like. Most of radioactive water filters used in nuclear power plants which are commercially operated at home are imported products at abroad, and imported goods have the problems of high cost, unstable supply period, poor after-sale service and the like, so that a water filter meeting the filtering and purifying requirements needs to be designed urgently to realize the localization of the water filter.
Disclosure of Invention
In view of the drawbacks of the prior art, it is an object of the present invention to provide a water filter for the treatment of radioactive water that can trap more particulate impurities with radioactivity while ensuring that the loss of particulate impurities with radioactivity is minimized when removing and disposing of the spent filter cartridge.
In order to achieve the above purposes, the invention adopts the technical scheme that: a water filter for treating radioactive water comprises a shell, wherein a shell end cover is arranged at the upper end of the shell, a filter element assembly and a filter element support frame are arranged in the shell, the filter element support frame is positioned above the filter element assembly, and the filter element assembly is compressed and fixed through the filter element support frame;
the shell is provided with a shell water inlet, a shell water outlet and an exhaust port;
the filter element group spare includes the filter core, the lower extreme is provided with filter core upper end cover and filter core lower extreme respectively on the filter core, the filter core surface covers there is the filter core protection net, be equipped with the filter core water inlet in the middle of the filter core upper end cover, it has an annular groove to open on the filter core upper end cover cylinder, be provided with the sealing washer in the recess.
Further, the water filter for treating radioactive water as described above, the housing water inlet is located at the middle of the housing cylindrical surface but higher than the top surface of the filter element assembly, and the housing water outlet is located at the bottom of the housing cylindrical surface.
Further, in the water filter for radioactive water treatment as described above, the exhaust port is located at the top of the cylindrical surface of the housing.
Further, according to the water filter for treating radioactive water, the upper end cover of the filter element is positioned on the inner boss of the shell, and the cylindrical surface of the upper end cover of the filter element is matched with the inner wall of the shell.
Further, the water filter for treating radioactive water as described above, wherein the filter element has a cylindrical shape, a surface of the filter element is pleated, a material of the filter element is modified glass fiber, and a filtering precision is 0.1 μm to 100 μm.
Further, according to the water filter for treating radioactive water, the section of the sealing ring is Y-shaped, and the material of the sealing ring is ethylene propylene diene monomer.
Further, as mentioned above, the filter element support frame comprises an upper ring and a lower ring, and the upper ring and the lower ring are connected through a connecting rod.
Still further, in the water filter for radioactive water treatment as described above, the bottom surface of the lower ring is in contact with the top surface of the upper end cap of the filter element, and the top surface of the upper ring is at the same level as the top surface of the housing.
Still further, in the water filter for radioactive water treatment as described above, the diameter of the upper ring is larger than the diameter of the lower ring.
Further, the water filter for treating radioactive water as described above, the housing and the housing end cap are connected by fastening bolts.
The water filter for treating radioactive water provided by the invention has the following advantages:
the water filter of the invention ensures that more particulate impurities with radioactivity are trapped by adopting a mode of going in and out, and simultaneously ensures that the loss of the particulate impurities with radioactivity is reduced as much as possible when the waste filter element is removed and disposed; by adopting the Y-shaped sealing ring, the sealing effect of the filter element can be improved, and the service life of the filter element can be prolonged; the glass fiber filter material and the multi-fold structure with different modified filter precisions can meet the filter precision requirements of various water treatment systems of nuclear power plants, and a feasible technical route is provided for realizing the localization of the water filter for radioactive water.
Drawings
Fig. 1 is a schematic structural view of a water filter for treating radioactive water provided in an embodiment of the present invention;
wherein: 1-a shell; 2-shell end cap; 3-a filter element assembly; 4-a filter element support frame; 5-a shell water inlet; 6-water outlet of the shell; 7-an exhaust port; 31-a filter element; 32-cartridge upper end cap; 33-filter element lower end cap; 34-a cartridge protection net; 35-a cartridge seal ring; 36-cartridge water inlet; 41-upper ring; 42-lower ring; 43-connecting rod.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 1, the present embodiment provides a water filter for treating radioactive water, which includes a housing 1, a housing end cap 2 is disposed at the upper end of the housing 1, a filter element assembly 3 and a filter element support frame 4 are disposed in the housing 1, and the filter element support frame 4 is disposed above the filter element assembly 3; the cylindrical surface of the shell 1 is provided with a shell water inlet 5, a shell water outlet 6 and an exhaust port 7.
The shell water inlet 5 is positioned in the middle area of the cylindrical surface of the shell 1 and is higher than the top surface of the filter element assembly 3, and the shell water outlet 6 is close to the bottom of the shell 1. The shell water inlet and the shell water outlet are connected with an external water treatment system through the quick connection assembly.
The gas vent 7 is close to the top of the shell 1, and in the working process, certain air can be generated in the shell 1 due to the action of water flow, so that certain pressure is caused, and if unnecessary gas is not discharged in time, the normal filtration of the filter element assembly 3 is influenced. Therefore, the exhaust port 7 is arranged to discharge the redundant gas in the shell 1 from the exhaust port in time, so as to ensure the normal work of the water filter.
The filter element assembly 3 comprises a filter element 31, the upper end and the lower end of the filter element 31 are respectively provided with a filter element upper end cover 32 and a filter element lower end cover 33, the outer surface of the filter element 31 is covered with a layer of filter element protection net 34, the middle of the filter element upper end cover 32 is provided with a filter element water inlet 36, and radioactive water enters the inside of the filter element 31 through the filter element water inlet 36 for filtering; an annular groove is formed in the cylindrical surface of the filter element upper end cover 32, a sealing ring 35 is arranged in the groove, the cross section of the sealing ring 35 is Y-shaped, and the material of the sealing ring is ethylene propylene diene monomer. Filter core upper end cover 32 places on casing 1's inside boss, realizes filter element group spare 3 fixed, guarantees water filter's sealed through sealing washer 35 between filter core upper end cover 31 and the casing 1 inner wall, prevents that unnecessary water from getting into the lower extreme of casing 1, along with casing delivery port 6 discharges, causes unnecessary pollution. The filter element 31 is cylindrical, the surface is multi-pleated, the material is modified glass fiber, the filtering precision range is wide, and the filter element can filter activated corrosion products and suspended solid particles with the particle size of 0.1-100 mu m.
The shell end cover 2 is provided with a fastening bolt, the shell 1 and the shell end cover 2 are connected through the fastening bolt, the shell 1 is sealed, and meanwhile, the filter element support frame 4 is compressed and fixed.
The working principle of the water filter for treating radioactive water provided by the embodiment is as follows:
when the water filter works, radioactive water containing particle impurities enters the filter through a water inlet in the shell and then enters the filter element with the filtering effect, the particle impurities in the water are intercepted by the filtering medium, and clean water permeates through the filtering material and flows out, so that the separation of the liquid and the particle impurities is realized. Along with the continuous entering of water that contains particulate impurity, the particulate impurity that filtering medium held back is more and more, and the pore of filter media can become littleer and more, leads to the pressure differential of entry and export to rise constantly, when reaching the setting value, just needs to change the filter element subassembly.
The working process of the water filter for treating radioactive water provided by the embodiment is as follows:
the water filter is connected into a process water treatment system of a primary loop and a secondary loop of a nuclear power plant, process water enters an area above a filter element upper end cover 32 inside a shell 1 from a shell water inlet 5 of the shell 1 through a quick connection assembly, then enters the filter element 31 from a filter element water inlet 36 of the filter element upper end cover 32 for filtering, filtered liquid can be leached out to the lower end of the shell 1, and finally the filtered liquid is discharged through a shell water outlet 6.
The invention ensures that more radioactive particulate impurities are captured and simultaneously reduces the loss of the radioactive particulate impurities as much as possible when the waste filter element is removed and disposed; by adopting the Y-shaped sealing ring, the sealing effect of the filter element can be improved, and the service life of the filter element can be prolonged; the glass fiber filter material and the multi-fold structure with different modified filter precisions can meet the filter precision requirements of various water treatment systems of nuclear power plants, and a feasible technical route is provided for realizing the localization of the water filter for radioactive water.
The above-described embodiments are merely illustrative of the present invention, which may be embodied in other specific forms or in other specific forms without departing from the spirit or essential characteristics thereof. The described embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the invention should be indicated by the appended claims, and any changes that are equivalent to the intent and scope of the claims should be construed to be included therein.
Claims (10)
1. A water filter for treating radioactive water, which is characterized by comprising a shell (1), wherein a shell end cover (2) is arranged at the upper end of the shell (1), a filter element assembly (3) and a filter element support frame (4) are arranged in the shell (1), the filter element support frame (4) is positioned above the filter element assembly (3), and the filter element assembly (3) is pressed and fixed through the filter element support frame (4);
the shell (1) is provided with a shell water inlet (5), a shell water outlet (6) and an exhaust port (7);
filter element group spare (3) are including filter core (31), the lower extreme is provided with filter core upper end cover (32) and filter core lower extreme cover (33) respectively about filter core (31), filter core (31) surface covering has filter core protection net (34), be equipped with filter core water inlet (36) in the middle of filter core upper end cover (32), it has an annular groove to open on filter core upper end cover (32) cylinder, be provided with sealing washer (35) in the recess.
2. The water filter for the treatment of radioactive water according to claim 1, wherein said housing water inlet (5) is located in the cylindrical middle of said housing (1) but higher than the top surface of said filter element assembly (3), and said housing water outlet (6) is located at the cylindrical bottom of said housing (1).
3. The water filter for the treatment of radioactive water according to claim 2, wherein the exhaust port (7) is located at the top of the cylindrical surface of the housing (1).
4. A water filter for the treatment of radioactive water according to any one of claims 1 to 3, wherein the cartridge upper end cap (32) is located on an internal boss of the housing (1), and a cylindrical surface of the cartridge upper end cap (32) is fitted with an inner wall of the housing (1).
5. The water filter for treating radioactive water according to claim 4, wherein the filter element (31) has a cylindrical shape, a surface formed in a multi-pleated shape, a material of modified glass fiber, and a filtering accuracy of 0.1 μm to 100 μm.
6. The water filter for treating radioactive water according to claim 5, wherein the cross section of the sealing ring (35) is Y-shaped, and the material is ethylene propylene diene monomer.
7. The water filter for the treatment of radioactive water according to claim 6, wherein said cartridge support frame (4) comprises an upper ring (41) and a lower ring (42), said upper ring (41) and said lower ring (42) being connected by a connecting rod (43).
8. The water filter for the treatment of radioactive water according to claim 7, wherein the bottom surface of the lower ring (42) is in contact with the top surface of the cartridge upper end cap (32), and the top surface of the upper ring (41) is at the same level as the top surface of the housing (1).
9. The water filter for the treatment of radioactive water according to claim 7 or 8, wherein the diameter of the upper ring (41) is larger than the diameter of the lower ring (42).
10. The water filter for treating radioactive water according to claim 1, wherein the housing (1) and the housing end cap (2) are connected by fastening bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110405367.1A CN113230711A (en) | 2021-04-15 | 2021-04-15 | Water filter for treating radioactive water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110405367.1A CN113230711A (en) | 2021-04-15 | 2021-04-15 | Water filter for treating radioactive water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113230711A true CN113230711A (en) | 2021-08-10 |
Family
ID=77128665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110405367.1A Pending CN113230711A (en) | 2021-04-15 | 2021-04-15 | Water filter for treating radioactive water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113230711A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115025530A (en) * | 2022-05-10 | 2022-09-09 | 中国核电工程有限公司 | Small-size radioactive waste liquid filter module with from shielding function |
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| US20040238440A1 (en) * | 2003-05-29 | 2004-12-02 | Clendenning Michael Andrew | Porous filter |
| CN201055719Y (en) * | 2007-07-05 | 2008-05-07 | 上海核工程研究设计院 | Filter element of filter |
| CN107654650A (en) * | 2017-10-30 | 2018-02-02 | 深圳市力德科技有限公司 | A kind of Y types high resiliency double-lip sealing ring and sealing structure |
| CN208229482U (en) * | 2018-04-02 | 2018-12-14 | 宁波埃美柯铜阀门有限公司 | A kind of running water system filter with visor function |
| CN208660514U (en) * | 2018-06-27 | 2019-03-29 | 中国科学院金属研究所 | A kind of oil passage filter |
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| CN212017002U (en) * | 2020-01-08 | 2020-11-27 | 中国辐射防护研究院 | Nuclear power unit radioactive water treatment is with filter core handle structure |
-
2021
- 2021-04-15 CN CN202110405367.1A patent/CN113230711A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20040238440A1 (en) * | 2003-05-29 | 2004-12-02 | Clendenning Michael Andrew | Porous filter |
| CN201055719Y (en) * | 2007-07-05 | 2008-05-07 | 上海核工程研究设计院 | Filter element of filter |
| CN107654650A (en) * | 2017-10-30 | 2018-02-02 | 深圳市力德科技有限公司 | A kind of Y types high resiliency double-lip sealing ring and sealing structure |
| CN208229482U (en) * | 2018-04-02 | 2018-12-14 | 宁波埃美柯铜阀门有限公司 | A kind of running water system filter with visor function |
| CN208660514U (en) * | 2018-06-27 | 2019-03-29 | 中国科学院金属研究所 | A kind of oil passage filter |
| CN209317214U (en) * | 2018-12-14 | 2019-08-30 | 核工业理化工程研究院 | Radioactive liquid waste adsorption filtration device |
| CN210905138U (en) * | 2019-08-28 | 2020-07-03 | 杭州力康净化设备有限公司 | Novel bag filter that secondary filter used |
| CN212017002U (en) * | 2020-01-08 | 2020-11-27 | 中国辐射防护研究院 | Nuclear power unit radioactive water treatment is with filter core handle structure |
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| Title |
|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115025530A (en) * | 2022-05-10 | 2022-09-09 | 中国核电工程有限公司 | Small-size radioactive waste liquid filter module with from shielding function |
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| CB02 | Change of applicant information |
Address after: No.102 Xuefu street, Taiyuan City, Shanxi Province Applicant after: CHINA INSTITUTE FOR RADIATION PROTECTION Applicant after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: No.102 Xuefu street, Taiyuan City, Shanxi Province Applicant before: CHINA INSTITUTE FOR RADIATION PROTECTION Applicant before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. |
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