CN204910981U - Pit filter - Google Patents
Pit filter Download PDFInfo
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- CN204910981U CN204910981U CN201520671367.6U CN201520671367U CN204910981U CN 204910981 U CN204910981 U CN 204910981U CN 201520671367 U CN201520671367 U CN 201520671367U CN 204910981 U CN204910981 U CN 204910981U
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Abstract
The utility model provides a pit filter, includes filter unit, pressure recovery unit and stationary flow unit, and pressure recovery unit fixed mounting is between filter unit and stationary flow unit, and the shape is straight cylindric, the whole shape of filter unit is the cylindric, and its tip is closed sphere, and its lateral wall is wave surface, and the last a plurality of that sets up of filter unit filters the passageway, the stationary flow unit is a pipeline that has streamlined lateral wall, and its exit end links to each other with the technology pipe network. The beneficial effects of the utility model are that: the terminal surface of the closed sphere of filter unit and wave surface's lateral wall have increased filter area, and the negotiability is stronger, and the difficult filter bed that forms of tubular structure, and the pressure loss is little, pressure recovery unit can be transformed into the static pressure with filtering the dynamic pressure that the passageway comes in, and the stationary flow unit that possesses streamlined passageway is dredged the medium and is flowed, eliminates the vortex, further reduces the pressure loss, the life of extension equipment.
Description
Art
The utility model relates to a kind of security system of pressurized-water reactor nuclear power plant, particularly relates to a kind of sump filter for pressurized-water reactor nuclear power plant.
Background technology
From the cooling agent of primary Ioops when the melt pit be located at bottom pressurized-water reactor nuclear power plant containment vessel is used to collect significant leakage.After pressurized-water reactor nuclear power plant generation basis accident is as coolant loss accident (LOCA) or main steam line rupture accident (MSLB), cooling agent enters containment sump by cut, these cooling agents will by containment sump frit, then enter safety injection system (RIS) and containment spray system (EAS) by pump installation and be used further to reactor cooling, to avoid reactor core major injury and containment superpressure.
Therefore, containment sump filter is the visual plant of pressurized-water reactor nuclear power plant security system, and under recirculation operating mode, its working condition directly has influence on the normal operation of safety injection system, containment spray system.Enter after accident in the cooling agent in containment sump and be mingled with a large amount of insulation materials and the fragment of other material, must by sump filter by these debris filters, to guarantee that safety injection system, containment spray system perform security function.
Existing sump filter, one is simple columnar structure, when taking same volume, the filter area of this structure is limited, and parallels with melt pit due to the filter area that this structure is larger, easily forms filter bed, crushing is comparatively large, reduces the service life of filter; Meanwhile, because this column structure entirety not adopts the netted filtering face seamlessly transitted, but there is the netted filtering face of certain bending, its processing technology relative complex, and bending place easily forms concentrated stress, reduces the bulk strength of filter cylinder; Another kind is double-layer nested formula structure, relative to front a kind of structure, and this structural strengthening bulk strength, and add filter area, reduce crushing to a certain extent, but the defect that bending part stress is concentrated is still existence, and still easily forming filter bed, after work certain hour, crushing is larger.
Utility model content
In order to overcome the above-mentioned shortcoming of existing sump filter, the utility model provides a kind of negotiability strong, the sump filter that crushing is little.
It is that a kind of sump filter, comprises filter element, pressure recovery unit and steady flow unit, and pressure recovery unit is fixedly mounted between filter element and steady flow unit that the utility model solves the technical scheme that its technical problem adopts, and shape is straight tube shape; Filter element global shape is tubular, and its end is closed sphere, and its sidewall is wavy surface, filter element is arranged several filtration channels; Steady flow unit is a pipeline with streamlined sidewall, and its port of export is connected with processing pipe network.
Further scheme is: filtration channel is shape is circular, abnormity, polygonal through hole.
The beneficial effects of the utility model are: the end face of the closed sphere of filter element and the sidewall of wavy surface, increase filter area, and negotiability is stronger, and tubular construction not easily forms filter bed, and crushing is little; The dynamic pressure that filtration channel is come in can be transformed into static pressure by pressure recovery unit, and medium is dredged stream by steady flow unit again that possess streamline flow passages, eliminates eddy current, reduces crushing further, the service life of extension device.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment.
In figure: 1. filter element; 2. filtration channel; 3. pressure recovery unit; 4. steady flow unit; 5. processing pipe network; 6. sphere; 7. wavy surface.
Detailed description of the invention
As shown in Figure 1, a kind of sump filter, comprises filter element 1, pressure recovery unit 3 and steady flow unit 4, and pressure recovery unit 3 is fixedly mounted between filter element 1 and steady flow unit 4, and shape is straight tube shape; Filter element 1 global shape is tubular, and its end is closed sphere 6, and its sidewall is wavy surface 7, filter element 1 is arranged several filtration channels 2, and filtration channel 2 is shapes is circular, abnormity, polygonal through hole; Steady flow unit 4 is a pipeline with streamlined sidewall, and its port of export is connected with processing pipe network 5.
Medium is entered by the filtration channel 2 on filter element 1, through pressure recovery unit 3, its dynamic pressure is transformed into static pressure, then through steady flow unit 4, is dredged stream, eliminates eddy current, finally enters in processing pipe network 5 and recycle.
Claims (2)
1. a sump filter, is characterized in that: comprise filter element, pressure recovery unit and steady flow unit, and described pressure recovery unit is fixedly mounted between filter element and steady flow unit, and shape is straight tube shape; Described filter element global shape is tubular, and its end is closed sphere, and its sidewall is wavy surface, described filter element is arranged several filtration channels; Described steady flow unit is a pipeline with streamlined sidewall, and its port of export is connected with processing pipe network.
2. sump filter as claimed in claim 1, is characterized in that: described filtration channel is shape is circular, abnormity, polygonal through hole.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201520671367.6U CN204910981U (en) | 2015-09-01 | 2015-09-01 | Pit filter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201520671367.6U CN204910981U (en) | 2015-09-01 | 2015-09-01 | Pit filter |
Publications (1)
Publication Number | Publication Date |
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CN204910981U true CN204910981U (en) | 2015-12-30 |
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Family Applications (1)
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CN201520671367.6U Active CN204910981U (en) | 2015-09-01 | 2015-09-01 | Pit filter |
Country Status (1)
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CN (1) | CN204910981U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109453556A (en) * | 2018-12-01 | 2019-03-12 | 湖南达道新能源开发有限公司 | A kind of equipment that can extract underground water heat |
CN109569055A (en) * | 2018-12-01 | 2019-04-05 | 湖南达道新能源开发有限公司 | A kind of geothermal drilling suitable in residential area |
-
2015
- 2015-09-01 CN CN201520671367.6U patent/CN204910981U/en active Active
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109453556A (en) * | 2018-12-01 | 2019-03-12 | 湖南达道新能源开发有限公司 | A kind of equipment that can extract underground water heat |
CN109569055A (en) * | 2018-12-01 | 2019-04-05 | 湖南达道新能源开发有限公司 | A kind of geothermal drilling suitable in residential area |
CN109453556B (en) * | 2018-12-01 | 2021-04-13 | 湖南达道新能源开发有限公司 | Equipment capable of extracting heat of underground water |
CN109569055B (en) * | 2018-12-01 | 2021-05-14 | 湖南达道新能源开发有限公司 | Geothermal well drilling suitable for residential area |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right |
Effective date of registration: 20230412 Address after: No. 8, Shengtong Road, Huilong Town, Qidong City, Nantong City, Jiangsu Province, 226200 Patentee after: Jiangsu Ruifan Environmental Protection Technology Co.,Ltd. Address before: No. 88, Xiexing Street, Nanyang Town, Qidong City, Nantong City, Jiangsu Province, 226232 Patentee before: JIANGSU SHENTONG VALVE Co.,Ltd. |
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TR01 | Transfer of patent right |