GB2555971A - Containment recycling filter - Google Patents
Containment recycling filter Download PDFInfo
- Publication number
- GB2555971A GB2555971A GB1720384.5A GB201720384A GB2555971A GB 2555971 A GB2555971 A GB 2555971A GB 201720384 A GB201720384 A GB 201720384A GB 2555971 A GB2555971 A GB 2555971A
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- United Kingdom
- Prior art keywords
- filter
- flange parts
- pithead
- wall
- module
- Prior art date
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- 238000004064 recycling Methods 0.000 title claims abstract description 52
- 241000269793 Cryothenia peninsulae Species 0.000 claims abstract description 61
- 229920001971 elastomer Polymers 0.000 claims abstract description 35
- 239000000806 elastomer Substances 0.000 claims abstract description 35
- 239000002184 metal Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 15
- 238000007789 sealing Methods 0.000 abstract description 7
- 239000002826 coolant Substances 0.000 description 7
- 238000009434 installation Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000306 component Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 102200052313 rs9282831 Human genes 0.000 description 1
- 230000009528 severe injury Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
-
- 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
- B01D29/50—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 multiple filtering elements, characterised by their mutual disposition
- B01D29/56—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 multiple filtering elements, characterised by their mutual disposition in series connection
- B01D29/58—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 multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially
-
- 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
-
- 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
- B01D29/31—Self-supporting filtering elements
- B01D29/33—Self-supporting filtering elements arranged for inward flow filtration
-
- 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
- B01D29/50—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 multiple filtering elements, characterised by their mutual disposition
-
- 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
- B01D29/50—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 multiple filtering elements, characterised by their mutual disposition
- B01D29/52—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 multiple filtering elements, characterised by their mutual disposition in parallel connection
-
- 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
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
-
- 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
-
- 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
- G21F9/02—Treating gases
-
- 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
-
- 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
- G21F9/28—Treating solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/60—Shape of non-cylindrical filtering elements
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Filtration Of Liquid (AREA)
Abstract
A containment recycling filter comprises a plurality of filtering modules (1), a plurality of connecting modules (2), and at least one pithead module (3). Each filtering module (1) comprises a confluence tank (11) and a plurality of filter cartridges (12). Filter cartridge holes (111a) are provided on the side wall (111) of the confluence tank (11), the filter cartridges (12) are mounted at the filter cartridge holes (111a), and first flange parts (114) are disposed at two ends of the confluence tank (11). Each connecting module (2) comprises a main body (20), elastic sheets (21), and elastomers (22). The main body (20) is of a trapezoidal structure, and second flange parts (23) are disposed at openings at two ends of the main body (20). The elastic sheets (21) are disposed at the outer sides of the second flange parts (23), and the elastomers (22) are clamped between the elastic sheets (21) and the second flange parts (23). A pithead confluence tank (31) of each pithead module (3) is a hollow tank with openings at the two ends and the bottom, and third flange parts (32) are disposed at the openings at the two ends. The pithead module (3) is hermetically mounted at the inlet of a pump, the connecting modules (2) are disposed between two filtering modules (1) or between the filtering modules (1) and the pithead module (3), and the elastic sheets (21) and the elastomers (22) are pressed tightly so as to perform a sealing function.
Description
(56) Documents Cited:
CN 202526992 U CN 103047129 A US 5935439 A
B01D 29/11 (2006.01)
CN 104971542 A CN 101569806 A (58) Field of Search:
INT CL B01D, G21C
Other: CPRS, CNKI, WPI, EPODOC (71) Applicant(s):
China Nuclear Power Technology Research Institute Co., Ltd
Room 1502-1504,1506,15th Floor,
Shenzhen Science & Technology Bid., No.1001, Shangbu Road Middle, Futian District, Shenzhen, Guangdong, China
China General Nuclear Power Co Ltd 33/f CGN Tower South Building,
No: 2002 Shennan Boulevard, Futian District, Shenzhen, Guangdong, China
CGN Power Co Ltd
18/F CGN Tower South Building,
No 2002 Shennan Boulevard, Futian, Shenzhen, Gauangdong/China, China (continued on next page) (54) Title of the Invention: Containment recycling filter Abstract Title: Containment recycling filter (57) A containment recycling filter comprises a plurality of filtering modules (1), a plurality of connecting modules (2), and at least one pithead module (3). Each filtering module (1) comprises a confluence tank (11) and a plurality of filter cartridges (12). Filter cartridge holes (111a) are provided on the side wall (111) of the confluence tank (11), the filter cartridges (12) are mounted at the filter cartridge holes (111a), and first flange parts (114) are disposed at two ends of the confluence tank (11). Each connecting module (2) comprises a main body (20), elastic sheets (21), and elastomers (22). The main body (20) is of a trapezoidal structure, and second flange parts (23) are disposed at openings at two ends of the main body (20). The elastic sheets (21) are disposed at the outer sides of the second flange parts (23), and the elastomers (22) are clamped between the elastic sheets (21) and the second flange parts (23). A pithead confluence tank (31) of each pithead module (3) is a hollow tank with openings at the two ends and the bottom, and third flange parts (32) are disposed at the openings at the two ends. The pithead module (3) is hermetically mounted at the inlet of a pump, the connecting modules (2) are disposed between two filtering modules (1) or between the filtering modules (1) and the pithead module (3), and the elastic sheets (21) and the elastomers (22) are pressed tightly so as to perform a sealing function.
>
This application has entered the national phase early
GB 2555971 A continuation (72) Inventor(s):
Huichao Shao Xiao Wang Jiang Yu Lide Zhang Jianyun Shuai Wei Wu Guofeng Zhou (74) Agent and/or Address for Service:
Mewburn Ellis LLP
City Tower, 40 Basinghall Street, LONDON, Greater London, EC2V 5DE, United Kingdom / 12
2/12
CC cm
CM / 12 in cm
CM in
112a
/ 12
113 / 12
Ό η
ΙΓ>
CM / 12
/ 12
/ 12
/ 12
/ 12
/ 12
312 / 12
CONTAINMENT RECYCLING FILTER
FIELD OF THE INVENTION [0001] The invention relates to pressurized water reactor nuclear power plant safety system, and more particular to a containment recycling filter.
BACKGROUND OF THE INVENTION
A containment sump configured at a bottom of containment in i'zed water reactor nuclear power plants is used for collect coolant from a primary circuit once a major leakage accident happens. After basis accidents such as LOCA. (Loss Of Coolant Accident) or MSLB (Main Steam Line Break Accident) happens, the coolant will enter to the containment sump through the break, which will pass through containment recycling filters in the sump, and then enter to a RIS (safety injection system) and EAS (containment spray system) for reactor cooling, so as to prevent severe damage of the reactor core and overpressure of the containment.
[0003] The coolant in the containment sump is mixed up with a large quantity of fragments of thermal insulation materials or other materials, which is required to filter by means of recycling filters, so as to ensure the safety of the RIS and the EAS. By this token, the containment recycling filter is critical equipment in pressurized water reactor nuclear power plant safety system . While the filter modules are core components of the containment recycling filter to achieve filtering capability.
[0004] A conventional recycling filter includes multiple filter modules with different specifications, pipeline modules with different specifications and sealing structure with different specifications. Therein, the filter modules are the core components to filter. Specifically, the filter modules are arranged in the sump corridor, the pipeline modules are configured between the filter modules and located at the pump entry of the pithead to adjust the flow, while the sealing structures are used for sealing the connection positions of the filter modules and the pipeline modules. However, such a recycling filter has different specifications and complex structures, thus the machining and installation processes are increased, moreover it is only applicable to a single working place, and thus the applicability is low.
[0005] Therefore, to solve the above problems, it is necessary to provide an improved containment recycling filter.
SUMMARY OF THE INVENTION [0006] One objective of the invention is to provide a containment recycling filter, which has uniform specification, simple structure and high applicability.
[0007] To achieve the above-mentioned objective, the present invention provides a containment recycling filter including a plurality of filter modules, a plurality of comiecting modules and at least one pithead module. Each filter module includes a collector groove and a plurality of filter cylinders, the collector groove includes two first side walls that are opposite to each other, as well as a first top wall and a bottom wall that are opposite to each other, the first top wall is connected between two upper ends of the first side walls, the bottom wall is connected between two lower ends of the first side walls, two openings are provided at two ends of the collector groove, two first flange parts are provided at the openings of the collector groove and extended outwards relative to the first top wall, the bottom wall and the first side walls; at least one of the first side walls is provided with a plurality of filter cylinder holes, and the filter cylinders are respectively installed in the filter cylinder holes. Each connecting module includes a main body, at least two elastic sheets and at least two elastomers, the main body includes an upper wall and a lower wall that are opposite to each other, as well as a second side wall and a third side wall that are opposite to each other, two ends of the upper wall are respectively fixed at one end of the second side wall and one end of the third side wall, two ends of the lower wall are respectively fixed at another end of the second side wall and another end of the third side wall, the second side wall is shorter than the third side wall, both the upper wall and the lower wall are approximately trapezoidal, two second flange parts are respectively provided at openings at two ends of the main body and extended outwards relative to the upper Avail, the lower wall, the second side Avail and the third side wall, the elastic sheets and the elastomers are disposed outside the second flange parts, inner edges of the elastic sheets are fixed to the second flange parts, a spacing is formed between outer edges of the elastic sheets and the second flange parts, and the elastomers are clamped between the elastic sheet and the second flange parts. The pithead module includes a pithead collector groove which is a hollow tank structure with two end openings, a bottom opening, a second top wall and two opposite fourth side walls, and two third flange parts are provided at two openings of the pithead collector groove and extended outwards relative to the second top wall and the fourth side walls. The pithead module is hermetically installed on a pump entry, and a bottom of the pithead collector groove is communicated with the pump entry, each connecting module is configured between two adjacent filter modules, or between the filter module and the pithead module, the second
parts are
and the elastic sheets and the elastomers are and the first flange parts, or tightly between the second flange parts the second flange parts and the third flange parts.
[0008] In comparison of the prior art, the filter according to the present invention includes three modules which have uniform specifications respectively, thus the manufacturing methods are simple and the costs are low. During the assembly, the pithead module is aligned with the pump entry of the pithead, and the connecting module is communicated with the filter module 1 and the pithead to form a complete flow channel by means of the first flange parts 114, the second flange parts and the third flange parts, the assembly process is quite simple. Furthermore, seal between the connecting module and the filter modules is achieved by means of elastic restoring forces of the elastic sheets and the elastomers, without setting additional sealing structures, which reduces the assembly difficulty. Moreover, since the main body of the connecting module is in trapezoidal structure, and the two filter modules are arranged at two sides of one connecting module, thus all filter modules and pithead modules can be arranged along the sump corridor in a camber. By this token, the filter modules and pithead modules can be used in different working places and adjusted according to the working places, thus the applicability is improved.
[0009] Preferably, a plurality of bolts are provided on the second side wall and the third side wall of the connecting module and closed to the second flange parts, and a plurality of positioning members detachably connected with the bolts are provided on the first flange parts, [0010] Specifically, the positioning members are made of plastic material, one end of each positioning member is fixed to the first flange part, another end of each positioning member is provided with a connecting groove, and the bolts pass through the connecting grooves and connect with the positioning members.
[0011] Preferably, the first, the second, and the third flange parts are in closed structures, the elastic sheets and the two elastomers are in corresponding closed structures, and the amount of the elastic sheets and the elastomers is two respectively.
[0012] Preferably, the pithead module further includes a pithead base with a middle opening, and the pithead base is hermetically fixed on the pump entry, and the pithead collector groove is hermetically fixed on the pithead base.
[0013] Preferably, the two first side walls of the collector grove are symmetrically provided with the filter cylinder holes, and the filter cylinders are respectively and symmetrically installed in the filter cylinder holes. Since the filter cylinder holes are provided on the two side walls of the collector groove in the filter module of a containment recycling filter, thus the collector groove is a symmetrical structure, which is easily processed and formed. Further, the plurality of filter cylinders are configured on both side walls, thus the torques generated by the filter cylinders on the collector groove are counteracted each other, so that the filter module is more stable, and no additional support component is required to support the collector groove, thereby the installation of the filter module is more simpler.
[0014] Specifically, the filter module further includes a grille that is a grid structure, and the grille is arranged on the first top wall and covered on the filter cylinders. In such an arrangement, eddies above the filter cylinders are reduced efficiently.
[0015] More specifically, two grilles are configured, and one end of each grille is fixed to the first top wall and extended outward the two first side walls, and the two grilles are respectively covered on the filter cylinders on the two first side walls.
[0016] Further, the filter module farther includes a plurality of connecting members, two ends of each connecting member are respectively provided with connecting holes, two rows of bolts are alternately arranged on the first top wall, one end of the grilles is provided with a row of through holes; the two rows of bolts are inserted into the through holes, two ends of each connecting member is pressed on the two grilles, and the bolts are inserted into the corresponding connecting holes.
[0017] Further, one end of the grille is connected with a support rod that is extended downwards.
[0018] Preferably, the filter module further comprises two bases, two base plates are connected with two ends of the bottom wall, and the two base plates are detachably connected with the two bases.
[0019] Specifically, two bolts are arranged on two ends of each base respectively, and two ends of each base plate are provided with through holes to allow the bolts to insert.
[0020] Preferably, a plurality of bolts protruded outwards are configured around each filter cylinder hole, one end of the filter cylinder is provided with a connecting plate that is pressed against the side wall, and the connecting plate is provided with a plurality of through holes to allow the bolts to insert.
[0021] Preferably, the filter cylinder is a double-layer screen structure, which increases the filtering efficiency.
[0022] Preferably, cross sections of the elastomers are circular, and the outer edges of the elastic sheets are bent to receive the elastomers.
[0023] Specifically, the elastomers are metal net twines that are formed by rolling a metal net and connected end to end.
[0024] Preferably, an upper enhanced rib is configured at the upper wall, and two ends of the upper enhanced rib are respectively fixed at the two second flange parts.
[0025] Preferably, a lower enhanced rib is configured at the lower wall, and two ends of the lower enhanced rib are respectively fixed at the two second flange parts.
[0026] Preferably, two side enhanced ribs are configured at the second side wall and the third side wall respectively, and two ends of each side enhanced rib are respectively fixed at the two second flange parts.
BRIEF DESCRIPTION OF THE DRAWINGS [0027] Fig. 1 is a perspective view of a single row of conventional containment recycling filters;
[0028] Fig. 2 is a perspective view of a containment recycling filter according to one embodiment of the present invention;
[0029] Fig. 3 is a side view of a filter module for a containment recycling filter according to one embodiment of the present invention;
[0030] Fig. 4 is a perspective view of a collector groove in a filter module for a containment recycling filter according to one embodiment of the present invention;
[0031] Fig. 5 is an exploded view of a filter cylinder of a filter module for a containment recycling filter according to one embodiment of the present invention;
[0032] Fig. 6 is a perspective view of a base in a filter module for a containment recycling filter according to one embodiment of the present invention;
[0033] Fig. 7 is a schematic view of a grille and connecting members in a filter module for a containment recycling filter according to one embodiment of the present invention;
[0034] Fig. 8 is a perspective view of a connecting module for a containment recycling filter according to one embodiment of the present invention;
[0035] Fig. 9 is a partial exploded view of a connecting module for a containment recycling filter according to one embodiment of the present invention;
[0036] Fig. 10 is a top view of a connecting module for a containment recycling filter according to one embodiment of the present invention;
[0037] Fig. 11 is a perspective view of a pithead module for a containment recycling filter according to one embodiment of the present invention; and [0038] Fig. 12 is a schematic view showing the connection of two adjacent filter modules according to one embodiment of the present invention.
DETAILED DESCRIPTION OF ILLUSTRATED EMBODIMENTS [0039] Preferred embodiments of the present invention will now be described with reference to the figures.
[0040] As shown in Fig. 1, a containment recycling filter includes a plurality of filter modules 1, a plurality of connecting modules 2 and at least one pithead module 3, which are arranged in a containment sump coni dor and communicated to form a flow channel. Specifically, the filter modules 1 are functioned as filtering, the connecting modules 2 are used for connecting adjacent modules and functioned as pipeline modules, while the pithead module 3 is installed on a pump entry in the sump. In this embodiment, the containment recycling filters are presented in a single row, including six filter modules 1, six connecting modules 2 and a pithead module 3. The detailed descriptions for their structures and connections follow.
[0041] As shown in Figs. 2 and 3, the filter module 1 includes a collector groove 11, a plurality of filter cylinders 12, two grilles 13, a plurality of connecting member 14 and two bases 15.
[0042] As shown in Fig. 4, the collector groove 11 is shaped as a case that is provided with two opening at ends, and the collector groove 11 includes two first side walls 111 that are opposite to each other, as well as a first top wall 112 and a bottom wall 113 that are opposite to each other; the first top wall 112 is connected between two upper ends of the first side walls 111, the bottom wall 103 is connected between two lower ends of the first side walls 111. Two first flange parts 114 extended outwards relative to the first top wall 112, the bottom wall 113 and the first side walls 111. As shown, each first flange part 114 is a closed structure surrounding the collector groove 11 and includes two opposite short edges and two opposite long edges, and a flake-like positioning member 115 is formed at two ends of the long edges, one end of the positioning member 115 is fixed on the first flange part 115, another end of the positioning member 115 is provided with a connecting groove 115a. Preferably, the positioning members 115 are made of plastic materials so that they can be flipped.
[0043] Two rows of bolts 112a are alternately protruded from the first top wad 112, closed to the first side walls 111 respectively and parallel to a length direction of the first side walls 111, further, the two rows of bolts 112 are symmetrical. In the present embodiment, each row has four holts. Two base plates 116 are connected with two ends of the bottom wall 113 and pressed against the first flange parts 114. Two ends of each base plate 116 is protruded out of the first side walls 111 and is provided with a through hole 116a.
[0044] The two first side walls 111 are arranged symmetrically, and each of which is provided with a plurality of filter cylinder holes Ilia. That is, each filter cylinder hole Ilia at one first side wall 111 is aligned with the corresponding filter cylinder hole Ilia at the other first side wall 111. Preferably, the filter cylinder holes Ilia are arranged in an array, for example, three rows and four columns (12) filter cylinder holes ilia are arranged at each first side wall 111, and each filter cylinder hole Ilia is hexagonal. Four bolts 111b are formed around the each filter cylinder hole Ilia. Referring to Fig. 3, for enhancing the strength of the collector groove 11, several rails 117 are configured between the two first side walls 111, and two ends of each rail 117 is fixed to the inner surfaces of the first side wall 111 to prevent the deformation of the first side walls 111.
[0045] Referring to Figs. 2, 4, 5, the filter cylinders 12 are respectively inserted in the filter cylinder holes 111a, and thus the quantity of the filter cylinders 12 is 24. Specifically, each filter cylinder 12 is a hexagonal prism, a connecting plate 121 this id rectangular is provided at its end, and four through holes 121a are configured at the four corners. When the filter cylinders 12 are installed, the filter cylinder 12 is aligned with the filter cylinder hole Ilia, with the connecting plate 121 is pressed against the first side wall 111, causing the bolts 111b around the filter cylinder hole ilia to pass through the through holes 121a on the connecting plate 121, and the filter cylinder 12 can he fixed to the first side wall 111 after nuts are engaged with the bolts 111b. Repeat these steps until all filter cylinders 12 are equipped.
[0046] For increasing filtering area and improving filtering efficiency, the filter cylinders 12 in this embodiment are double-layer screen structures. Specifically, each filter cylinder 12 include an outer filter net 122 and an inner filter net 123 which is configured inside the outer filter net 122, with spacing, both of which are in prismatic shape. As shown, a hexagonal circular space 124 is formed between the outer and the inner filter nets 122, 123. Both of the outer io and the inner filter nets 122, 123 are provided with two end openings, and the connecting plate 121 is located outside the outer filter net 122 and extended outwards. Further, the filter cylinder 12 includes a front cover plate 125 and a rear cover plate 126, the front cover plate 125 is a hexagonal ring, and the rear cover plate 126 is hexagonal corresponding to the opening. More specifically, the front cover plate 125 is fixed on the front end and seals the opening of the hexagonal circular space 124, while the rear cover plate 126 is fixed on the rear end and seals the rear opening of the inner filter net 123, but doesn’t seal the hexagonal circular opening 124. After the filter cylinder 12 is mounted on the collector groove 11, the hexagonal circular space 124 is communicated with the inner space of the collector groove 11, and the filtering fluid will enter the hexagonal circular space 124 via the outer filter net 122, and then go into the collector groove 11 after filtering.
[0047] Referring to Figs. 6 and 4, two bolts 151 are arranged on two ends of the base 15, with the same spacing with that through holes 116a on the base plate 116, which is for supporting the collector groove 11 to make it fix on the ground of the sump stably. During the filter module 1 is mounting, the two bases 15 are welded to the ground of the sump firstly, then the collector groove 11 is disposed on the bases 15 to cause the bolts 151 to insert in the through ole 116a, finally nuts are screwed on the bolts 151 to finish the installation ofthe collector groove 11. As a preferable manner, the through holes 116a on the base plate 116 can be rectangular, so that the bolts 151 can slide along the through holes 116a to fine adjust the position of the collector groove 11.
[0048] Referring to Figs. 7 and 2, the two grilles 13 are grid structures, one end of each grille 13 is provided with a row of through holes (not shown), such as four through holes are corresponding to the bolts 112a on the first top wall
II
112. The connecting members 14 are used for connecting with the bolts 112a on the first top wall 112 so as to fix the grilles 13 on the collector groove 11, thus the quantity of the connecting members 14 is four as web. Specifically, the connecting members 14 are in strip structures, with through holes 141 are formed on ends thereof. After the collector groove 11 are installed, the ends of the grilles 13 where the through holes are formed are mounted on the first top wall 112, causing the bolts 112a to engage with the through holes of the grilles 13, then the connecting members 14 presses against the grilles 13 with the through holes 141 of each connecting member 14 engages w ith the bolts 112a; finally, the bolts 112a are screwed by nuts to finish the positioning of the grilles 13 on the collector groove 11. After the grilles 13 are positioned, they are covered above the filter cylinders 12 on the side walls. Since only one end of the grille 13 is fixed, thus a support rod 16 is fixed on its suspending end and extended downwards to reach the ground, so as to enhance the grilles 13. Preferably, the grilles 13 are formed by intersecting longitudinal members with transverse members, for example, the longitudinal members are flat steels with size of 30mmx5mm, and the transverse members are twist steels, and the grille unit is with size of 100mm >< 30mm.
[0049] As shown in Figs. 8-10, the connecting module 2 for a containment recycling filter includes a main body 20, at least two elastic sheets 21 and at least two elastomers 22.
[0050] Specifically, the main body 20 is a frame that defines a cavity, the main body 20 includes an upper wall 201 and a lower wall 202 that are parallel and opposite to each other, as well as a second side wall 203 and a third side wall 204 that are parallel and opposite to each other. Two ends of the upper wad 201 are respectively fixed at one end of the second side wall 203 and one end of the third side wall 204, and two ends of the lower wall 202 are respectively fixed at another end of the second side wall 203 and another end of the third side wall 204. The second side wall 203 is shorter than the third side wall 204, and both the upper wall 201 and the lower wall 202 are approximately trapezoidal. Specifically, the upper wall 201 and the lower wall 202 are planar, while the second and the third side walls 203, 204 are in a V-shape that is formed by two planes, and the protruding directions of the second and the third side walls 203, 204 are the same.
[0051] Two second flange parts 23 are separately provided at openings at two ends of the main body 20 and extended outwards relative to the upper wall 201, the lower wall 202, the second side wall 203 and the third side wall 204. Preferably, the second flange part 23 is a rectangular closed structure that embraces the end of the main body 20, and the size of the second flange part 23 is the same with that of the first flange part 114.
[0052] An upper enhanced rib 205 is configured at the upper wall 201, and two ends of the upper enhanced rib 205 are respectively fixed at the two second flange parts 23. A lower enhanced rib (not shown) is configured at the lower wall 202, and two ends of the lower enhanced rib are respectively fixed at the two second flange parts 23. Two side enhanced ribs 206 are configured at the second side wall 203 and the third side wall 204 respectively, and two ends of the side enhanced ribs 206 are respectively fixed at the two second flange parts 23. In such a way, the strength of the connecting module 2 is enhanced. Additionally, a bolt 206a is provided at the side enhanced rib 206, for connecting with the filter module.
[0053] In the present embodiment, the elastic sheets 21 and the elastomers are in rectangular closed structures that are corresponding with the second flange parts 23. One elastic sheet 21 and one elastomer 22 are configured at one second flange part 23, and another elastic sheet 21 and another elastomer 22 is configured at another second flange part 23. Specifically, the inner edges of the elastic sheets 21 are fixed to the outer side of the second flange parts 23 by means of welding for example, and a gap is formed between the outer edges of the elastic sheets 21 and the second flange parts 23, with the outer edges of the elastic sheets 21 are bent in a camber. Preferably, the cross section of the elastomer 22 is circular and received in the bent edge of the elastic sheet 21, furthermore, elastomer elastic second flange part 23. More specifically, the elastomers 22 are metal net twines that are formed by rolling a metal net and connected end to end, thus the elastomers 22 are elastic as well as rigid.
[0054] As shown in Fig. 11, the pithead module 3 includes a pithead collector groove 31 which is a hollow tank structure with two end openings, a bottom opening, a second top wall 311 and two opposite fourth side walls 312. Two third flange parts 32 are provided at two openings of the pithead collector groove 31 and extended outwards relative to the second top wall 311 and the fourth side walls 312. Preferably, the third flange parts 32 are also in closed structures and have the same size with the second flange parts 23. The recycling coolant entering the pithead collector groove 31 will go into the pump entry via the bottom of the pithead collector groove 31.
[0055] Referring to Figs. 1, 4, 8 and 12, two adjacent filter modules 1 are connected by means of one connecting module 2, and the pithead module 3 is connected to the two filter at both sides by means of two connecting modules 2. During the assembly at one side of the connecting module 2, the first flange part 114 of collector groove 11 of the filter module 1 is aligned with and pressed against the second flange part 23, and the positioning member 115 of the first flange part 117 is flipped towards the connecting module 2, causing the bolts 206a oil the side enhanced ribs 206 of the connecting module 2 to insert into the connecting groove 115a. Then the positioning members 115 are screwed on the bolts 206a by means of nuts, thus the positioning members 115 are tightly pressed against the side enhanced ribs 206 to make the first flange part 114 and the second flange part 23 to connect firmly. At this time, the elastic sheet 21 and the elastomers 22 are tightly pressed and sealed between the second flange part 23 and the first flange part 114. As the other side of the connecting module 2, another filter module is connected with the connecting module 2 in the same manner. Regarding to the pithead module 3, its third flange part 32 also can be provided with a positioning member like the numeral 115, so as to connect with the second flange part 23 to complete the connection between the pithead module 3 and the connecting module 2.
[0056] After the installation, the end openings of the collector groove 11 of each filter module 1 are communicated with the ends of the main body 20 of the two connecting modules 2, meanwhile the ends of the main body 20 are communicated with the ends of the pithead collector groove 31 of the pithead module 3, in such a way, a complete flow channel is formed among the filter modules 1, the connecting module 2 and the pithead module 3. Thus coolant entering to the containment pithead will go into the circular space 124 via the holes on the filter cylinders 12 and then be filter, and then the recycling coolant will be collected by the pithead collector groove 31 and go into the pump entry, so as to complete reutilization.
[0057] The bolts in this embodiment can be molded directly, or thread through a hole on the corresponding position to form.
[0058] In comparison with the prior arts, the filter according to the present invention includes three modules which have uniform specifications respectively, thus the manufacturing methods are simple and the costs are low. During the assembly, the pithead module 3 is aligned with the pump entry of the pithead, and the connecting module 2 is communicated with the filter module 1 and the pi thead 3 to form a complete flow channel by means of the first flange parts 114, the second flange parts 23 and the third flange parts 32, the assembly process is quite simple. Furthermore, seal between the connecting module 2 and the filter modules 1 is achieved by means of elastic restoring forces of the elastic sheets 21 and the elastomers 22, without setting additional sealing structures, which reduces the assembly difficulty. Moreover, since the main body 20 of the connecting module 2 is in trapezoidal structure, and the two filter modules 1 are arranged at two sides of one connecting module 2, thus all filter modules 1 and pithead modules 3 can be arranged along the sump corridor in a camber. By this token, the filter modules 1 and pithead modules 3 can be used in different working places and adjusted according to the working places, thus the applicability is improved.
[0059] While the invention has been described in connection with what are presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.
Claims (19)
1. A containment recycling filter, comprising a plurality of filter modules, a plurality of connecting modules and at least one pithead module;
wherein each filter module comprises a collector groove and a plurality of filter cylinders, the collector groove comprises two first side walls that are opposite to each other, as well as a first top wall and a bottom wall that are opposite to each other, the first top wall is connected between two upper ends of the first side walls, the bottom wall is connected between two lower ends of the first side walls, two openings are provided at two ends of the collector groove, two first flange parts are provided at the openings of the collector groove and extended outwards relative to the first top wall, the bottom wall and the first side walls; at least one of the first side walls is provided with a plurality of filter cylinder holes, and the filter cylinders are respectively installed in the filter cylinder holes;
each connecting module comprises a main body, at least two elastic sheets and at least two elastomers, the main body comprises an upper wall and a lower wall that are opposite to each other, as well as a second side wall and a third side wall that are opposite to each other, two ends of the upper wall are respectively fixed at one end of the second side wall and one end of the third side wall, two ends of the lower wall are respectively fixed at another end of the second side wall and another end of the third side wall, the second side wall is shorter than the third side wall, both the upper wall and the lower wall are approximately trapezoidal, two second flange parts are respectively provided at openings at two ends of the main body and extended outwards relative to the upper wall, the lower wall, the second side wall and the third side wall, the elastic sheets and the elastomers are disposed outside the second flange parts, inner edges of the elastic sheets are fixed to the second flange parts, a spacing is formed between outer edges of the elastic sheets and the second flange parts, and the elastomers are clamped between the elastic sheet and the second flange parts;
the pithead module comprises a pithead collector groove which is a hollow tank structure with two end openings, a bottom opening, a second top wall and two opposite fourth side walls, and two third flange parts are provided at two openings of the pithead collector groove and extended outwards relative to the second top wall and the fourth side walls;
the pithead module is hermetically installed on a pump entry, and a bottom of the pithead collector groove is communicated with the pump entry; each connecting module is configured between two adjacent filter modules, or between the filter module and the pithead module, the second flange parts are fixed to the first flange parts or the third flange parts, and the elastic sheets and the elastomers are pressed tightly between the second flange parts and the first flange parts, or between the second flange parts and the third flange parts.
2. The containment recycling filter according to claim 1, wherein a plurality of bolts are provided on the second side wall and the third side wall of the connecting module and closed to the second flange parts, and a plurality of positioning members detachably connected with the bolts are provided on the first flange parts.
3. The containment recycling filter according to claim 2, wherein the positioning members are made of plastic material, one end of each positioning member is fixed to the first flange part, another end of each positioning member is provided with a connecting groove, and the bolts pass through the connecting grooves and connect with the positioning members.
4. The containment recycling filter according to claim 1, wherein the first, the second, and the third flange parts are in closed structures, the elastic sheets and the two elastomers are in corresponding closed structures, and the amount of the elastic sheets and the elastomers is two respectively.
5. The containment recycling filter according to claim 1, wherein the pithead module further comprises a pithead base with a middle opening, and the pithead base is hermetically fixed on the pump entry, and the pithead collector groove is hermetically fixed on the pithead base.
6. The containment recycling filter according to claim 1, wherein the two first side wnlls of the collector grove are symmetrically provided with the filter cylinder holes, and the filter cylinders are respectively and symmetrically installed in the filter cylinder holes.
7. The containment recycling filter according to claim 6, wherein the filter module further includes a grille that is a grid structure, and the grille is arranged on the first top wall and covered on the filter cylinders,
8. The containment recycling filter according to claim 7, wherein two grilles are configured, and one end of each grille is fixed to the first top wall and extended outward the two first side walls, and the two grilles are respectively covered on the filter cylinders on the two first side walls.
9. The containment recycling filter according to claim 8, wherein the filter module further comprises a plurality of connecting members, two ends of each connecting member are respectively provided with connecting holes, two rows of bolts are alternately arranged on the first top wall, one end of the grilles is provided with a row of through holes; the two rows of bolts are inserted into the through holes, two ends of each connecting member is pressed on the two grilles, and the bolts are inserted into the corresponding connecting holes.
10. The containment recycling filter according to claim 10, wherein one end of the grille is connected with a support rod that is extended downwards.
11. The containment recycling filter according to claim 1, wherein the filter module further comprises two bases, two base plates are connected with two ends of the bottom wall, and the two base plates are detachably connected with the two bases.
12. The containment recycling filter according to claim Tl, wherein two bolts are arranged on two ends of each base respectively, and two ends of each base plate are provided with through holes to allow the bolts to insert.
13. The containment recycling filter according to claim 1, wherein a plurality of bolts protruded outwards are configured around each filter cylinder hole, one end of the filter cylinder is provided with a connecting plate that is pressed against the side wall, and the connecting plate is provided with a plurality of through holes to allow the bolts to insert.
14. The containment recycling filter according to claim 1, wherein the filter cylinder is a double-layer screen structure.
15. The containment recycling filter according to claim 1, wherein cross sections of the elastomers are circular, and the outer edges of the elastic sheets are bent to receive the elastomers.
16. The containment recycling filter according to claim 15, wherein the elastomers are metal net twines that are formed by rolling a metal net and connected end to end.
17. The containment recycling filter according to claim I, wherein an upper enhanced rib is configured at the upper wall, and two ends of the upper enhanced rib are respectively fixed at the two second flange parts.
18. The containment recycling filter according to claim 1, wherein a lower enhanced rib is configured at the lower wall, and two ends of the lower enhanced rib are respectively fixed at the two second flange parts.
19. The containment recycling filter according to claim 1, wherein two side enhanced ribs are configured at the second side wall and the third side wall respectively, and two ends of each side enhanced rib are respectively fixed at the two second flange parts.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510426895.XA CN104971542B (en) | 2015-07-20 | 2015-07-20 | Containment recycling filter |
| PCT/CN2015/098569 WO2017012265A1 (en) | 2015-07-20 | 2015-12-24 | Containment recycling filter |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| GB201720384D0 GB201720384D0 (en) | 2018-01-24 |
| GB2555971A true GB2555971A (en) | 2018-05-16 |
| GB2555971B GB2555971B (en) | 2022-01-12 |
| GB2555971B8 GB2555971B8 (en) | 2022-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1720384.5A Active GB2555971B8 (en) | 2015-07-20 | 2015-12-24 | Containment recycling filter |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN104971542B (en) |
| GB (1) | GB2555971B8 (en) |
| WO (1) | WO2017012265A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104971542B (en) * | 2015-07-20 | 2017-01-25 | 中广核研究院有限公司 | Containment recycling filter |
| CN109478435A (en) * | 2017-06-30 | 2019-03-15 | 原子能技术科学研究设计院股份公司 | The protective device of precipitation tank can protect the filtering module and filter element of hole protective device in the cooling emergency system of water moderated nuclear reactor |
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|---|---|---|---|---|
| US5935439A (en) * | 1997-02-19 | 1999-08-10 | Performance Contracting, Inc. | Suction system with end supported internal core tube suction strainers |
| CN101569806A (en) * | 2009-05-25 | 2009-11-04 | 中国广东核电集团有限公司 | Containment sump filter |
| CN202526992U (en) * | 2011-11-24 | 2012-11-14 | 中国核电工程有限公司 | Pit filter for nuclear power plant |
| CN103047129A (en) * | 2012-12-17 | 2013-04-17 | 中国核电工程有限公司 | Filter at safety system pump suction inlet inside replacement material water tank inside nuclear power plant |
| CN104971542A (en) * | 2015-07-20 | 2015-10-14 | 中科华核电技术研究院有限公司 | Containment recycling filter |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10026097A1 (en) * | 2000-05-26 | 2001-11-29 | Uwe Rosenplaenter | Filter module, especially for filtering water from koi fish pond, is intrinsically stable for supporting several similar modules, has outer wall formed from edge-profiled wall elements |
| CN201776019U (en) * | 2010-07-23 | 2011-03-30 | 中科华核电技术研究院有限公司 | Containment sump filter and collecting tank structure thereof |
| CN103028285B (en) * | 2012-12-17 | 2015-04-22 | 中国核电工程有限公司 | Filter system for built-in containment refueling water storage tank |
-
2015
- 2015-07-20 CN CN201510426895.XA patent/CN104971542B/en active Active
- 2015-12-24 GB GB1720384.5A patent/GB2555971B8/en active Active
- 2015-12-24 WO PCT/CN2015/098569 patent/WO2017012265A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5935439A (en) * | 1997-02-19 | 1999-08-10 | Performance Contracting, Inc. | Suction system with end supported internal core tube suction strainers |
| CN101569806A (en) * | 2009-05-25 | 2009-11-04 | 中国广东核电集团有限公司 | Containment sump filter |
| CN202526992U (en) * | 2011-11-24 | 2012-11-14 | 中国核电工程有限公司 | Pit filter for nuclear power plant |
| CN103047129A (en) * | 2012-12-17 | 2013-04-17 | 中国核电工程有限公司 | Filter at safety system pump suction inlet inside replacement material water tank inside nuclear power plant |
| CN104971542A (en) * | 2015-07-20 | 2015-10-14 | 中科华核电技术研究院有限公司 | Containment recycling filter |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017012265A1 (en) | 2017-01-26 |
| GB2555971B8 (en) | 2022-02-09 |
| GB201720384D0 (en) | 2018-01-24 |
| CN104971542A (en) | 2015-10-14 |
| CN104971542B (en) | 2017-01-25 |
| GB2555971B (en) | 2022-01-12 |
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