CN201055719Y - Filter element of filter - Google Patents
Filter element of filter Download PDFInfo
- Publication number
- CN201055719Y CN201055719Y CNU2007201555169U CN200720155516U CN201055719Y CN 201055719 Y CN201055719 Y CN 201055719Y CN U2007201555169 U CNU2007201555169 U CN U2007201555169U CN 200720155516 U CN200720155516 U CN 200720155516U CN 201055719 Y CN201055719 Y CN 201055719Y
- Authority
- CN
- China
- Prior art keywords
- central tube
- filtering
- filter
- utility
- end cap
- 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.)
- Expired - Lifetime
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Abstract
The utility model belongs to a part of the filter, in specific relates to a filtering element. The utility model comprises a central tube and an external protective ring which is arranged on the outside of the central tube; a filtering layer is arranged between the central tube and the external protective ring, the upper end of the central tube and the external protective ring is equipped with an upper sealed end cap and the lower end is equipped with a lower sealed end cap correspondingly; a pull rod is arranged between the upper and the lower sealed end caps. The filtering layer adopts nuclear-grade fiberglass filtering materials which are overlapped. The utility model has the advantages that with the pull rod arranged between the upper and the lower sealed end caps, the structure of the filtering element can be firmer and more durable; with the filtering layer made of nuclear-grade fiberglass filtering materials, the special requirements of radiation resistance, temperature resistance, acid resistance, the setting out amount of the SiO2 being less than or equal to 1ppm and high filtering precision can be met. The utility model can be used for filtering in the loop process system of the pressurized-water reactor nuclear power station.
Description
Technical field
The utility model relates to a kind of filter element, is specifically related to the filter element that use in a kind of nuclear power station presurized water reactor one loop.
Background technology
The fluid liquid (filter medium) of nuclear power station presurized water reactor one loop process system has anti-irradiation, heatproof, acidproof, operating mode service life 〉=12 month, SiO to filter element
2The amount of separating out≤1ppm, the particular requirement that filtering accuracy is high.At present domestic still do not have a filter core that satisfies above-mentioned particular requirement, and China present commercial off-the-shelf nuclear power station presurized water reactor one loop process system is with the whole imports of filter element.Therefore need a kind of Special filter filter core that can satisfy above-mentioned requirements of development.
Summary of the invention
The purpose of this utility model is, provide a kind of can satisfy anti-irradiation is arranged, heatproof, acidproof, operating mode service life 〉=12 month, SiO
2The filter element of the amount of separating out≤1ppm, particular requirement that filtering accuracy is high.
The utility model is to realize like this, a kind of filter element, it comprises central tube, be positioned at the outer guard ring of central tube outside, be provided with filter course between central tube and the outer guard ring, central tube is provided with the end-blocking lid with the upper end of outer guard ring, and the bottom is provided with the lower seal end cap, is provided with pull bar between last end-blocking lid and lower seal end cap.Filter course adopts nuclear level fiberglass filter material, and is the inverted pleat shape.
The utility model has the advantages that: between lower seal end cap and last end-blocking lid, establish a pull bar and can make the structure of filter element more firm, durable; Select for use nuclear level fiberglass filter material as filter course, can satisfy anti-irradiation, heatproof, acidproof and SiO
2The amount of separating out≤1ppm, the particular requirement that filtering accuracy is high.
Description of drawings
Fig. 1 is the schematic diagram of a kind of filter element of the utility model;
Fig. 2 is the top plan view of Fig. 1.
Among the figure, 1 pull bar, 2 nuts, 3 pull bar pads, 4 sealing rings, end-blocking lid on 5,6 screws, 7 outer guard rings, 8 filter courses, 9 central tubes, 10 lower seal end caps.
The specific embodiment
As depicted in figs. 1 and 2, a kind of filter element it comprise pull bar 1, nut 2, pull bar pad 3, sealing ring 4, go up end-blocking lid 5, screw 6, outer guard ring 7, filter course 8, central tube 9, lower seal end cap 10.Wherein open the hole in the middle of the upper end cover 5, installing hole is offered in the periphery, and the upper end offers the sealing ring annular groove, and the binding agent annular groove is offered in the lower end; Open screwed hole and binding agent annular groove in the middle of the top of lower seal end cap 10.The cartridge type that filter course 8 is shaped for inverted pleat is between the outer guard ring 7 and central tube 9 of the perforate cylinder type that gathers on the wall of packing into.The two ends up and down of outer guard ring 7, filter course 8 and central tube 9 are respectively charged in the binding agent annular groove of end-blocking lid 5 and lower seal end cap 10, and with specific core level binding agent will go up end-blocking cover 5 and lower seal end cap 10 bond together with them respectively.Screw thread is all established at the two ends of pull bar 1, and the through hole that the one end passes end-blocking lid 5 connects firmly with the screwed hole of lower seal end cap 10, and the other end pull bar pad 3 of packing into afterwards covers itself and last end-blocking 5 affixed with nut 2.Be provided with in the installing hole of last end-blocking lid 5 and place in screw 6 and the sealing ring annular groove that sealing ring 4 is convenient to be connected with other parts.Pull bar 1, nut 2, pull bar pad 3, screw 6 are selected the stainless steel material of anti-irradiation and acid and alkali-resistance for use; The rubber of anti-irradiation of the raw material selection of sealing ring 4 and acid and alkali-resistance, heatproof; Last end-blocking lid 5, outer guard ring 7, central tube 9, lower seal end cap 10 are selected the stainless steel material of anti-irradiation and heatproof, acid and alkali-resistance for use or are selected the polyester material for use.Filter course 8 select for use anti-irradiation, heatproof, acidproof, to SiO
2The amount of separating out has the raw material of particular requirement special.Specific core level binding agent selects for use the material spy of anti-irradiation, heatproof, acid and alkali-resistance to prepare, and base material is epoxy resin, titanium dioxide.Last end-blocking lid 5 and lower seal end cap 10 usefulness pull bars 1, nut 2, pull bar pad 3 affixed purposes are to stop filter element in the operating mode that reaches 12 months is used the end cap case accident to take place.
Nuclear power station presurized water reactor of the present utility model one loop process system sees Table 1 with the main technical parameters of filter element.
Table 1
| Sequence number | Project | Unit | The |
|
| 1 | Filter medium | Boric acid aqueous solution, boric acid concentration 0%～4% (weight), pH value are 5.4～10.5 | ||
| 2 | Operating temperature | ℃ | Normal operation: 45～50 is the highest :≤60 | |
| 3 | | μm | 1、3、5、10、25 | |
| 4 | Filter efficiency | ％ | ≥98 | |
| 5 | Single filter core flux | t/ |
2～4 | |
| 6 | | GY | 1×104 | |
| 7 | Service life | Month | ≥12 | |
| 8 | Single filter core pressure reduction | MPa | When just adorning: when lost efficacy in Δ P≤0.035: Δ P 〉=0.25 | |
| 9 | Filter core SiO in the presurized water reactor one loop process system of packing into 2Separate out total amount | ppm | ≤1 |
The filtration that the utility model can be used as in the pressurized-water reactor nuclear power plant one loop process system is used.
Claims (3)
1. filter element, it comprises central tube (9), be positioned at the outside outer guard ring (7) of central tube (9), be provided with filter course (8) between central tube (9) and the outer guard ring (7), central tube (9) is provided with end-blocking lid (5) with the upper end of outer guard ring (7), the bottom is provided with lower seal end cap (10), it is characterized in that: be provided with pull bar (1) between last end-blocking lid (5) and lower seal end cap (10).
2. a kind of filter element as claimed in claim 1 is characterized in that: said filter course (8) adopts nuclear level fiberglass filter material, and is the inverted pleat shape.
3. a kind of filter element as claimed in claim 1 or 2 is characterized in that: the two ends of outer guard ring (7), central tube (9) and filter course (8) are respectively with specific core level binding agent and last end-blocking lid (5) and lower seal end cap (10) bonding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201555169U CN201055719Y (en) | 2007-07-05 | 2007-07-05 | Filter element of filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201555169U CN201055719Y (en) | 2007-07-05 | 2007-07-05 | Filter element of filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201055719Y true CN201055719Y (en) | 2008-05-07 |
Family
ID=39424565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201555169U Expired - Lifetime CN201055719Y (en) | 2007-07-05 | 2007-07-05 | Filter element of filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201055719Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113230712A (en) * | 2021-04-15 | 2021-08-10 | 中国辐射防护研究院 | Water filter element for treating radioactive water |
| CN113230711A (en) * | 2021-04-15 | 2021-08-10 | 中国辐射防护研究院 | Water filter for treating radioactive water |
-
2007
- 2007-07-05 CN CNU2007201555169U patent/CN201055719Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113230712A (en) * | 2021-04-15 | 2021-08-10 | 中国辐射防护研究院 | Water filter element for treating radioactive water |
| CN113230711A (en) * | 2021-04-15 | 2021-08-10 | 中国辐射防护研究院 | Water filter for treating radioactive water |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080507 |