CN105214362A - Filter element and nuclear island safety shell recirculating filter - Google Patents
Filter element and nuclear island safety shell recirculating filter Download PDFInfo
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- CN105214362A CN105214362A CN201510575250.2A CN201510575250A CN105214362A CN 105214362 A CN105214362 A CN 105214362A CN 201510575250 A CN201510575250 A CN 201510575250A CN 105214362 A CN105214362 A CN 105214362A
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Abstract
The present invention discloses a kind of filter element, for filtering water in nuclear island safety shell recirculating filter, it comprises filter element, cover plate, base plate and framework, filter element is the tubular structure of hollow, the equally spaced setting of multiple filter element and the horizontally-arranged unit of transversely arranged formation, the upper end of the filter element in horizontally-arranged unit and described cover plate are dismountable being connected together, the equally spaced longitudinal arrangement of multiple horizontally-arranged unit forms rectangular matrix filter unit, matrix filter unit is installed in framework, the lower end of the filter element of matrix filter unit and base plate are dismountable being connected together, the cover plate of the horizontally-arranged unit of matrix filter unit is fixedly connected with framework, because filter element is made up of multiple filter element, add filter area greatly and efficiency of confluxing, under loss of-coolant accident (LOCA) operating mode, disintegrating slag is filtered in the interception of energy efficient quick, effectively avoids blocking, separately, the invention also discloses the nuclear island safety shell recirculating filter with this filter element.
Description
Technical field
The present invention relates to a kind of used in nuclear power station filter, particularly relate to a kind of filter element of filtering for the water collected reactor building under accident conditions and nuclear island safety shell recirculating filter.
Background technology
Nuclear power station, when loss of-coolant accident (LOCA), will form a large amount of insulation fibre fragments and granular debris, if these fragments enter recirculation upstream device, (such as, various pump, peace spraying nozzle, fuel assembly inlet screen) can cause equipment blocking accident.Nuclear island safety shell recirculating filter is normally arranged on the annulus of reactor building, be positioned at above RIS/EAS (safety injection system/containment spray system) system pump intake, major function is under accident conditions, flood underwater nuclear island safety shell recirculating filter and can efficiently tackle filtration disintegrating slag, guarantee that the water to reactor building is collected filters, to avoid resulting in blockage to the nozzle on EAS system spraying ring pipe, and avoid resulting in blockage to fuel rod support barrier in the RIS system recirculates stage.
Existing nuclear island safety shell mainly comprises base, top board and several filter elements (also known as filter core) at recursive filter, adjacent filter elements has being arranged separately between base and top board of spacing, and the two ends of each filter element respectively with base and top board load; Filter element comprises Inside and outside network, and Intranet is located in outer net; Top board comprises Intranet upper mounted plate and outer net upper mounted plate, and Intranet upper mounted plate and the load of outer net upper mounted plate; The Intranet upper mounted plate of top board is provided with several liquid-through holes, and the outer net upper mounted plate of top board is provided with several and installs through hole; The upper end of Intranet is connected with the liquid-through hole of Intranet upper mounted plate, and the lower end of Intranet is by Intranet bottom plate and base load; And the upper end of outer net is connected with the installation through hole of outer net upper mounted plate, the cannelure load on the lower end of outer net and base; Also be fitted with left and right side plate between described base and top board, and left and right side plate all has multiple through hole, several filter elements are all between left and right side plate; Also be fitted with forward and backward stiffener between base and top board, and several filter elements are all between forward and backward stiffener; Described base has fluid hole, and fluid hole communicates with by the chamber formed between Inside and outside network.
There is certain design defect in this existing nuclear island safety shell recirculating filter, thus affect its performance: what the nuclear island safety shell recirculating filter had adopted is the horizontal arrangement of filter element, because single filter element is directly connected with collecting pipe, and filter element does not design and enough strengthens structure, bulk strength and the anti-seismic performance of filter element are undesirable; Some filters adopt single layer filter element, are taking under same space deployment scenarios, increase the difficulty of system layout filter on melt pit because the filtration gross area is less; The filter element of some filters adopts polygonized structure, and its single filter element does not process filter opening at bending part, thus reduces the flow area of single filter cylinder, and easily affects the resistance of the inside and outside fluid of filter cylinder at bending part; Unreasonable when carrying out vertical, horizontal and being assembled due to stud connector design of some filter elements, causes assembled process complicated and comparatively large by the restriction of receiving on-the-spot place, causes assembled formed filtration channel layout unreasonable and is not easy to the circulation of water.
Therefore, not only structure is simple, rigid is good to need one badly, and the large and nuclear island safety shell recirculating filter that efficiency of confluxing is high of filter area, to overcome the deficiencies in the prior art.
Summary of the invention
An object of the present invention is to provide one, and not only structure is simple, rigid is good, and the large and filter element that efficiency of confluxing is high of filter area.
Two of object of the present invention is to provide one, and not only structure is simple, rigid is good, and the large and nuclear island safety shell recirculating filter that efficiency of confluxing is high of filter area.
For achieving the above object, filter element provided by the invention, for filtering water in nuclear island safety shell recirculating filter, described filter element comprises filter element, cover plate, base plate and framework, described filter element is the tubular structure of hollow, the equally spaced setting of multiple described filter elements and the horizontally-arranged unit of transversely arranged formation, the upper end of the filter element in described horizontally-arranged unit and described cover plate are dismountable being connected together, the equally spaced longitudinal arrangement of multiple described horizontally-arranged unit forms rectangular matrix filter unit, described matrix filter unit is installed in described framework, the lower end of the filter element of described matrix filter unit and described base plate are dismountable being connected together, the cover plate of the horizontally-arranged unit of described matrix filter unit is fixedly connected with described framework.
Preferably, described filter element comprises the main board in tabular, in offering filter bores uniformly on described main board, described main board is bent to form the rectangular configuration of hollow in the width direction, the docking of dual-side in engaging of the length direction of described main board after bending.
Preferably, the joggle of dual-side in engaging of the length direction of described main board.
Preferably, a side of the length direction of described main board protrudes out tenon, and another side of the length direction of described main board offers and docks with described tenon the tongue-and-groove engaged.
Preferably, the upper end of described mainboard body protrudes out bent upper fastener, and described filter element is connected together by described upper fastener and described cover plate.
Preferably, the lower end of described mainboard body protrudes out bent lower fastener, and described filter element is connected together by described lower fastener and described base plate.
Nuclear island safety shell recirculating filter provided by the invention, water for collecting reactor building under accident conditions filters, described nuclear island safety shell recirculating filter comprises at least two filter elements, wherein, described filter element is as described above, described filter element, in the rectangular distribution of erectting, is dismountable connection between adjacent described filter element.
Preferably, described nuclear island safety shell recirculating filter also comprises connector, described connector comprises upper connector and lower connector, the upper end of adjacent described filter element is dismountable connection by described upper connector, and the lower end of adjacent described filter element is dismountable connection by described lower connector.
Compared with prior art, after the present invention adopts said structure, nuclear island safety shell recirculating filter of the present invention is made to have multiple filter element, and this filter element comprises again multiple filter element, nuclear island safety shell recirculating filter of the present invention and filter element is made to add filter area greatly and efficiency of confluxing, filter element is at cover plate, rectangular matrix filter unit is formed under the location of base plate and framework and fixation, thus make filter element of the present invention form overall structure, structure is simple and rigid is good, thus be easy to nuclear island safety shell recirculating filter of the present invention and melt pit to carry out assembling and dismantling, when nuclear power station generation loss of-coolant accident (LOCA), under this accident conditions, disintegrating slag is filtered in the interception of flooding underwater nuclear island safety shell recirculating filter energy efficient quick of the present invention, guarantee that the water collected reactor building carries out fully effective filtration, avoid resulting in blockage to the nozzle on EAS system spraying ring pipe, and avoid resulting in blockage to fuel rod support barrier in the RIS system recirculates stage, therefore, not only structure is simple for nuclear island safety shell recirculating filter of the present invention, rigid is good, and filter area is large and efficiency of confluxing is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of nuclear island safety shell recirculating filter of the present invention.
Fig. 2 is the structural representation of filter element of the present invention.
Fig. 3 is the structural representation of the filter element of filter element of the present invention.
Fig. 4 is the expanded view of Fig. 3.
Fig. 5 is the structure for amplifying schematic diagram of part A in Fig. 1.
Fig. 6 is the structural representation of the lower connector of nuclear island safety shell recirculating filter of the present invention.
Fig. 7 is the structural representation of another lower connector of nuclear island safety shell recirculating filter of the present invention.
Fig. 8 is the structural representation of the another lower connector of nuclear island safety shell recirculating filter of the present invention.
Detailed description of the invention
With reference now to accompanying drawing, describe embodiments of the invention, element numbers similar in accompanying drawing represents similar element.
As shown in Figure 1, nuclear island safety shell recirculating filter 1 provided by the invention, water for collecting reactor building under accident conditions filters, described nuclear island safety shell recirculating filter 1 comprises at least two filter elements 10, described filter element 10, in the rectangular distribution of erectting, is dismountable connection between adjacent described filter element 10; Below in conjunction with Fig. 2-Fig. 8, the present invention is further detailed explanation:
Shown in composition graphs 1 and Fig. 2, filter element 10 provided by the invention, for filtering water in nuclear island safety shell recirculating filter 1, described filter element 10 comprises filter element 100, cover plate 200, base plate 300 and framework 400, the tubular structure of described filter element 100 in hollow, the equally spaced setting of multiple described filter elements 100 and the horizontally-arranged unit 500 of transversely arranged formation, upper end and the described cover plate 200 of the filter element 100 in described horizontally-arranged unit 500 are connected together in dismountable, namely described horizontally-arranged unit 500 is by erect and the filter element 100 of laterally equidistantly distribution is formed under the connection positioning action of a cover plate 200, the equally spaced longitudinal arrangement of multiple described horizontally-arranged unit 500 forms rectangular matrix filter unit, it should be noted that, quantity and the distribution of the filter element 100 in the quantity of the filter element 100 that filter element 10 of the present invention has and distribution and moment battle array filter element are identical, described matrix filter unit is installed in described framework 400, lower end and the described base plate 300 of the filter element 100 of described matrix filter unit are connected together in dismountable, the cover plate 200 of the horizontally-arranged unit 500 of described matrix filter unit is fixedly connected with described framework 400, the upper end of all filter elements 100 namely in each horizontally-arranged unit 500 is all connected by a cover plate 200, end and the framework 400 of this cover plate 200 are fixed, the lower end of all filter elements 100 of matrix filter unit is all connected by a base plate 300, this base plate 300 is fixed with framework 400, make filter element 10 of the present invention under the fixing and spacing effect of cover plate 200, base plate 300 and framework 400, form a monolithic construction.
Continue shown in composition graphs 1 and Fig. 2, nuclear island safety shell recirculating filter 1 of the present invention has multiple longitudinal and horizontally-arranged unit 500 of equidistantly arrangement, and horizontally-arranged unit 500 has multiple setting and the filter element 100 of cross direction profiles, filter element 100 under the fixing and spacing effect of cover plate 200, base plate 300 and framework 400, thus forms the filter element 10 of a monolithic construction; Make nuclear island safety shell recirculating filter 1 of the present invention and filter element 10 add filter area greatly and efficiency of confluxing, structure is simple and rigid is good, is easy to nuclear island safety shell recirculating filter 1 of the present invention to carry out assembling and dismantling with melt pit.
It should be noted that because filter element 10 of the present invention comprises multiple filter element 100, and nuclear island safety shell recirculating filter 1 of the present invention comprise multiple filter element 10; The concrete quantity of described filter element 100 and filter element 10, those skilled in the art, on the basis of technical scheme provided by the invention, according to the demand of actual conditions, can to make one's options use without the need to any performing creative labour, not repeat them here.
Shown in composition graphs 3 and Fig. 4, preferably, described filter element 100 comprises the main board 101 in tabular, in offering filter bores 102 uniformly on described main board 101, described main board 101 is bent to form the rectangular configuration of hollow in the width direction, the docking of dual-side in engaging of the length direction of described main board 101 after bending; Particularly, shown in composition graphs 4, main board 101 carries out bending back side edge 101a and side 101b along dotted line A, B, C in Fig. 4 and docks engaging, thus just forms the filter element 100 of the rectangular configuration of hollow as shown in Figure 3; Filter element 100 is directly bent to form rectangular configuration by the main board 101 in tabular, the docking of dual-side in engaging of the length direction of main board 101 after bending, thus makes filter element 100 in integral structure, and structure is simple and rigid is good.
Continue shown in composition graphs 3 and Fig. 4, preferably, dual-side 101a, 101b joggle in engaging of the length direction of described main board 101; Engaged by dual-side 101a, 101b of the mode realization body 101 of joggle, structure is simple and practical.
Continue shown in composition graphs 3 and Fig. 4, preferably, a side 101a of the length direction of described main board 101 protrudes out tenon 104, and another side 101b of the length direction of described main board 101 offers and docks with described tenon 104 tongue-and-groove 105 engaged; Certainly also can tongue-and-groove 105 be opened on side 101b, tenon be located on side 101a; Or side 101a has simultaneously tongue-and-groove 105 and tenon 104, and tenon 104 correspondence be provided with on tenon 104, respective side 101a of tongue-and-groove 105 correspondence on side 101b on respective side 101a offers tongue-and-groove 105; Being connected together between side 101a and side 101b is realized with coordinating of tongue-and-groove 105 by tenon 104, not only simple and practical, and being inserted in tongue-and-groove 105 of tenon 104 correspondence can directly engage by main board 101 after bending, convenient to operation, and sound construction.
Shown in composition graphs 2-Fig. 5, preferably, the upper end of described mainboard body 101 protrudes out bent upper fastener 106, and described filter element 100 is connected together with described cover plate 200 by described upper fastener 106; During assembling, first by the equally spaced setting of multiple filter elements 100 and the horizontally-arranged unit 500 of transversely arranged formation, then by horizontal for a cover plate 200 upper end being layed in the filter element 100 of horizontally-arranged unit 500 run through, finally bend the upper fastener 106 on transition element 100, be coated on cover plate 200 after fastener 106 is bent, thus cover plate 200 is linked together with all filter elements 100 of same horizontally-arranged unit 500 are dismountable, convenient and fast connection, structural strength good and dismantle and also facilitate.
Shown in composition graphs 2-Fig. 4, preferably, the lower end of described mainboard body 101 protrudes out bent lower fastener 107, and described filter element 100 is connected together with described base plate 300 by described lower fastener 107; During assembling, first base plate 300 to be fixed on framework 400 and to keep horizontal, then the correspondence erect by filter element 100 is inserted in the slot (not shown) of base plate 300 up and down fastener 107 correspondence, finally bend the lower fastener 107 on transition element 100, be coated on base plate 300 after lower fastener 107 is bent, thus base plate 300 is linked together with filter element 100 is dismountable, convenient and fast connection, structural strength good and dismantle and also facilitate.
Shown in composition graphs 1 and Fig. 5-Fig. 8, preferably, described nuclear island safety shell recirculating filter 1 also comprises connector, described connector comprises upper connector 20 and lower connector, the upper end of adjacent described filter element 10 is by described upper connector 20 in dismountable connection, and the lower end of adjacent described filter element 10 is dismountable connection by described lower connector.
Continue shown in composition graphs 5, described upper connector 20 comprises flat connecting plate 21 and screw 22, described connecting plate 21 is placed on the edge of the upper end of the framework 400 of adjacent described filter element 10, described screw 22 correspondence is passed described connecting plate 21 and stretches into described framework 400 in being connected with a joggle, thus by the upper connector 20 that connecting plate 21 and screw 22 form, the framework 400 outside adjacent filter element 10 is coupled together in dismountable, because filter element 10 to be installed in framework 400 and cover plate 200 and base plate 300 are fixedly connected with framework 400 again, therefore effectively the upper end of adjacent filter element 10 is linked together by upper connector 20.
Continue shown in composition graphs 1 and Fig. 6-Fig. 8, because the filter element 10 of nuclear island safety shell recirculating filter 1 is in rectangular distribution, in order to make to carry out stable connection between adjacent filter element 10, thus make the structure of haveing suffered nuclear island safety shell recirculating filter 1 more reliable and more stable, therefore the invention provides the three kinds of lower connectors being positioned at different junction, different labels is adopted to mark for convenience of description respectively, lower connector 31 shown in Fig. 6 is for supporting and connecting four adjacent filter elements 10, namely the filter element 10 be in matrix all carries out support and connection by lower connector 31, lower connector 32 shown in Fig. 7, for supporting and connecting two adjacent filter elements 10, is namely in matrix four edges edge and the filter element 10 of non-edge is all undertaken supporting and connecting by lower connector 32, the filter element 10 of lower connector 33 shown in Fig. 8 only on four corners of proppant matrix, four filter elements 10 being namely in the edge of matrix edge are supported by lower connector 33.
Shown in composition graphs 1-Fig. 8, after the present invention adopts said structure, nuclear island safety shell recirculating filter 1 of the present invention is made to have multiple filter element 10, and this filter element 10 comprises again multiple filter element 100, nuclear island safety shell recirculating filter 1 of the present invention and filter element 10 is made to add filter area greatly and efficiency of confluxing, filter element 100 is at cover plate 200, rectangular matrix filter unit is formed under the location of base plate 300 and framework 400 and fixation, thus make filter element 10 of the present invention form overall structure, structure is simple and rigid is good, thus be easy to nuclear island safety shell recirculating filter 1 of the present invention to carry out assembling and dismantling with melt pit, when nuclear power station generation loss of-coolant accident (LOCA), under this accident conditions, disintegrating slag is filtered in the interception of flooding underwater nuclear island safety shell recirculating filter 1 energy efficient quick of the present invention, guarantee that the water collected reactor building carries out fully effective filtration, avoid resulting in blockage to the nozzle on EAS system spraying ring pipe, and avoid resulting in blockage to fuel rod support barrier in the RIS system recirculates stage, therefore, not only structure is simple for nuclear island safety shell recirculating filter of the present invention, rigid is good, and filter area is large and efficiency of confluxing is high.
Separately, the operation principle of nuclear island safety shell recirculating filter 1 involved in the present invention, is well known to those of ordinary skill in the art, is no longer described in detail at this.
Above disclosedly be only the preferred embodiments of the present invention, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the present patent application the scope of the claims is done, still belong to the scope that the present invention is contained.
Claims (8)
1. a filter element, for filtering water in nuclear island safety shell recirculating filter, it is characterized in that: comprise filter element, cover plate, base plate and framework, described filter element is the tubular structure of hollow, the equally spaced setting of multiple described filter elements and the horizontally-arranged unit of transversely arranged formation, the upper end of the filter element in described horizontally-arranged unit and described cover plate are dismountable being connected together, the equally spaced longitudinal arrangement of multiple described horizontally-arranged unit forms rectangular matrix filter unit, described matrix filter unit is installed in described framework, the lower end of the filter element of described matrix filter unit and described base plate are dismountable being connected together, the cover plate of the horizontally-arranged unit of described matrix filter unit is fixedly connected with described framework.
2. filter element as claimed in claim 1, it is characterized in that: described filter element comprises the main board in tabular, in offering filter bores uniformly on described main board, described main board is bent to form the rectangular configuration of hollow in the width direction, the docking of dual-side in engaging of the length direction of described main board after bending.
3. filter element as claimed in claim 2, is characterized in that: the joggle of dual-side in engaging of the length direction of described main board.
4. filter element as claimed in claim 3, it is characterized in that: a side of the length direction of described main board protrudes out tenon, another side of the length direction of described main board offers and docks with described tenon the tongue-and-groove engaged.
5. filter element as claimed in claim 2, is characterized in that: the upper end of described mainboard body protrudes out bent upper fastener, and described filter element is connected together by described upper fastener and described cover plate.
6. filter element as claimed in claim 2, is characterized in that: the lower end of described mainboard body protrudes out bent lower fastener, and described filter element is connected together by described lower fastener and described base plate.
7. a nuclear island safety shell recirculating filter, water for collecting reactor building under accident conditions filters, described nuclear island safety shell recirculating filter comprises at least two filter elements, it is characterized in that: described filter element is according to any one of claim 1-6, described filter element, in the rectangular distribution of erectting, is dismountable connection between adjacent described filter element.
8. nuclear island safety shell recirculating filter as claimed in claim 7, it is characterized in that: also comprise connector, described connector comprises upper connector and lower connector, the upper end of adjacent described filter element is dismountable connection by described upper connector, and the lower end of adjacent described filter element is dismountable connection by described lower connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510575250.2A CN105214362A (en) | 2015-09-10 | 2015-09-10 | Filter element and nuclear island safety shell recirculating filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510575250.2A CN105214362A (en) | 2015-09-10 | 2015-09-10 | Filter element and nuclear island safety shell recirculating filter |
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| CN105214362A true CN105214362A (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510575250.2A Pending CN105214362A (en) | 2015-09-10 | 2015-09-10 | Filter element and nuclear island safety shell recirculating filter |
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| CN (1) | CN105214362A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113368569A (en) * | 2021-06-30 | 2021-09-10 | 中国核电工程有限公司 | Filter unit and pit filter comprising same |
| CN113368568A (en) * | 2021-06-30 | 2021-09-10 | 中国核电工程有限公司 | Filter unit and pit filter comprising same |
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| CA2042108A1 (en) * | 1990-05-09 | 1991-11-10 | Roger Alexander Buttery | Filter assemblies |
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| CN203990023U (en) * | 2014-08-28 | 2014-12-10 | 乐清市赛烙奇滤网有限公司 | Novel portable filter tool |
| CN204073589U (en) * | 2014-09-09 | 2015-01-07 | 温州祥河家禽农民专业合作社 | One can lifting type grid knot screen |
| CN104822438A (en) * | 2012-10-01 | 2015-08-05 | 恩特格里斯公司 | Purification system |
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| CA2042108A1 (en) * | 1990-05-09 | 1991-11-10 | Roger Alexander Buttery | Filter assemblies |
| CN202526992U (en) * | 2011-11-24 | 2012-11-14 | 中国核电工程有限公司 | Pit filter for nuclear power plant |
| CN104822438A (en) * | 2012-10-01 | 2015-08-05 | 恩特格里斯公司 | Purification system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113368569A (en) * | 2021-06-30 | 2021-09-10 | 中国核电工程有限公司 | Filter unit and pit filter comprising same |
| CN113368568A (en) * | 2021-06-30 | 2021-09-10 | 中国核电工程有限公司 | Filter unit and pit filter comprising same |
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Application publication date: 20160106 |