CN105056612A - Pit filter - Google Patents
Pit filter Download PDFInfo
- Publication number
- CN105056612A CN105056612A CN201510550530.8A CN201510550530A CN105056612A CN 105056612 A CN105056612 A CN 105056612A CN 201510550530 A CN201510550530 A CN 201510550530A CN 105056612 A CN105056612 A CN 105056612A
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- Prior art keywords
- filter
- unit
- flow stabilizing
- pressure
- pressure recovery
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Abstract
A pit filter comprises a filter unit, a pressure recovery unit and a flow stabilizing unit. The pressure recovery unit is fixedly installed between the filter unit and the flow stabilizing unit and shaped like a straight cylinder; the filter unit is shaped like a cylinder on the whole, the end of the filter unit is a closed spherical surface, and the side wall of the filter unit is a corrugated surface, and the filter unit is provided with multiple filter channels; the flow stabilizing unit is a pipeline with a streamlined side wall, and an outlet end of the flow stabilizing unit is connected with a processing pipe network. The pit filter has the advantages that by means of the end face of the closed spherical surface of the filter unit and the side wall of the corrugated surface, the filter area is increased, the flow capacity is stronger, a filter bed is not prone to being formed due to the cylindrical structure, and the pressure loss is small; the pressure recovery unit can convert the dynamic pressure entering from the filter channels into static pressure, the flow stabilizing unit with a streamlined channel divides the medium, the eddy current is eliminated, the pressure loss is further reduced, and the service life of equipment is prolonged.
Description
Art
The present invention relates to a kind of security system of pressurized-water reactor nuclear power plant, particularly relate 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.
Summary of the invention
In order to overcome the above-mentioned shortcoming of existing sump filter, the invention provides a kind of negotiability strong, the sump filter that crushing is little.
The technical solution adopted for the present invention to solve the technical problems is, 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, 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 invention has the beneficial effects as follows: the end face of the closed sphere of filter element and the sidewall of wavy surface, increase filter area, 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 |
|---|---|---|---|
| CN201510550530.8A CN105056612A (en) | 2015-09-01 | 2015-09-01 | Pit filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510550530.8A CN105056612A (en) | 2015-09-01 | 2015-09-01 | Pit filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105056612A true CN105056612A (en) | 2015-11-18 |
Family
ID=54486254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510550530.8A Pending CN105056612A (en) | 2015-09-01 | 2015-09-01 | Pit filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105056612A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296843A (en) * | 2018-11-29 | 2019-02-01 | 杨胜 | A kind of corrosionproof pipes connector |
| CN111032181A (en) * | 2017-12-29 | 2020-04-17 | 原子能技术科学研究设计院股份公司 | Nuclear power station water storage pool active filter |
-
2015
- 2015-09-01 CN CN201510550530.8A patent/CN105056612A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111032181A (en) * | 2017-12-29 | 2020-04-17 | 原子能技术科学研究设计院股份公司 | Nuclear power station water storage pool active filter |
| CN111032181B (en) * | 2017-12-29 | 2021-12-03 | 原子能技术科学研究设计院股份公司 | Active filter for nuclear power station water storage pool |
| CN109296843A (en) * | 2018-11-29 | 2019-02-01 | 杨胜 | A kind of corrosionproof pipes connector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151118 |