CN202887753U - Spent fuel storage grid of nuclear power plant - Google Patents
Spent fuel storage grid of nuclear power plant Download PDFInfo
- Publication number
- CN202887753U CN202887753U CN2012203377129U CN201220337712U CN202887753U CN 202887753 U CN202887753 U CN 202887753U CN 2012203377129 U CN2012203377129 U CN 2012203377129U CN 201220337712 U CN201220337712 U CN 201220337712U CN 202887753 U CN202887753 U CN 202887753U
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- Prior art keywords
- power plant
- nuclear power
- spent fuel
- sleeve
- screen work
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model discloses a spent fuel storage grid of a nuclear power plant, which comprises storage chambers, a grid bottom plate and a support leg component, wherein the storage chambers are independent storage chamber units fixed on the grid bottom plate; each independent storage chamber unit comprises a sleeve, a storage chamber base, a neutron absorber and a cladding plate; the sleeve is fixed on the storage chamber base; and the neutron absorber is fixed on the outer wall of the sleeve through the cladding plate. Compared with the prior art, the spent fuel storage grid of a nuclear power plant, disclosed by the utility model, is formed by combining independent storage chamber units, and the structures of all storage chambers are completely consistent, thus modular manufacturing is easy to realize; and the pitch of the grid can be freely adjusted according to needs, so that the grid can adapt to neutron absorbers of different thicknesses, meet the storage requirements of multiple types of fuel components and adapt to the design requirements of the spent fuel storage grids of areas I and II.
Description
Technical field
The utility model relates to the irradiated fuel store technology in the nuclear power plant, and more particularly, the utility model relates to nuclear power plant's spent fuel storage rack that a kind of structural strength is high and be easy to process.
Background technology
Nuclear power plant's spent fuel storage rack is installed in the Spent Fuel Pool of fuel factory building, it is the visual plant of fuel handling and storage system in the nuclear power plant, its major function is to store safely fuel assembly, specifically comprises temporary batch turning assembly, the irradiated fuel assembly that does not reenter heap, damaged fuel assembly and the novel fuel assembly (not irradiation) of the postdose that draws off from reactor.The fuel assembly enrichment of storing and operating condition different in heap have all proposed different requirements to the content of version, pitch and the neutron absorber material of storage screen work.
Existing nuclear power plant spent fuel storage rack has the various structures form, and the cadmium spent fuel storage rack of widespread use in the nuclear power plant is comprised of parts such as base plate, upper backup pad, peripheral board, storage sleeve pipes.But the base plate of above-mentioned screen work and the difficulty of processing of upper backup pad are larger, and the version of screen work determined that its pitch can not be too little, therefore as with this kind structure applications Yu Er district screen work, can have influence on the storage capacity of Spent Fuel Pool.
The version of the designed screen work of U.S. HOLTEC company and processing are all comparatively simple, and the neutron absorber material that this kind screen work adopts is Al base B
4C, but such frame structure intensity is not easy to guarantee.In addition, because there is not guide section in the top of screen work, and stores on the little locular wall and have boss so that the operation personnel to fuel assembly to pull and push operation very unfavorable, have the risk of jam fuel assembly operation.
The storage screen work of Qinshan first phase nuclear power plant is the splicing form, and the neutron absorber material adopts the mode that hangs, and still, such screen work processing is comparatively loaded down with trivial details, and does not consider the burnup credit value of assembly, so that memory space is lower.Two district's screen works of mountain range Australia nuclear power plant also are the splicing form, and it adopts the boron stainless steel as structured material, and screen work is spliced by boron stainless steel plate, and still, this frame structure is not also because existing the top guide section to be unfavorable for the loading and unloading of fuel assembly.
Along with the Large scale construction of domestic nuclear power generating sets with put into effect, design nuclear power plant's spent fuel storage rack that a kind of structural strength is high and be easy to process, become the problem that fuel assembly is needed solution in storing badly.
Summary of the invention
The purpose of this utility model is: nuclear power plant's spent fuel storage rack that a kind of structural strength is high and be easy to process is provided.
In order to realize the foregoing invention purpose, the utility model provides a kind of nuclear power plant spent fuel storage rack, it comprises stores cell, screen work base plate and leg assembly, storing cell is the little chamber unit of independent storage that is fixed on the screen work base plate, each is independently stored little chamber unit and all comprises sleeve, stores cell base, neutron absorber and cladding plate, sleeve is fixed in to be stored on the cell base, and neutron absorber is fixed in the outer wall of sleeve by cladding plate.
As a kind of improvement of the utility model nuclear power plant spent fuel storage rack, also comprise being interspersed between the adjacent storage cell its dividing plate that is connected and fixed.
As a kind of improvement of the utility model nuclear power plant spent fuel storage rack, the thickness of described dividing plate equals the gap of the sleeve of adjacent storage cell.
A kind of improvement as the utility model nuclear power plant spent fuel storage rack, described sleeve is square sleeve, also comprise peripheral board and column, described dividing plate is connected to " well " font and the mode by welding is fixed on the peripheral board that is around in around the screen work, and column is fixed on the screen work base plate and to peripheral board and supports.
As a kind of improvement of the utility model nuclear power plant spent fuel storage rack, described sleeve is square sleeve, and storing the cell base is plinth, and sleeve is fixed on the storage cell base by the mode of welding.
As a kind of improvement of the utility model nuclear power plant spent fuel storage rack, offer the discharge orifice on the described storage cell base, offer the discharge orifice corresponding with the discharge orifice of storing the cell base on the screen work base plate.
A kind of improvement as the utility model nuclear power plant spent fuel storage rack, offer connecting hole on the described storage cell base, evenly offer the connecting hole corresponding with the connecting hole of storing the cell base on the screen work base plate, the little chamber unit of independent storage is fixed on the screen work base plate in the mode that is threaded by the connecting hole of correspondence.
A kind of improvement as the utility model nuclear power plant spent fuel storage rack, the top of described square sleeve is expanded into the taper type opening with certain angle and is formed the spigot surface of inclination at the top of sleeve, and two adjacent independent sleeve tops of storing little chamber unit are adopted and are welded and fixed.
As a kind of improvement of the utility model nuclear power plant spent fuel storage rack, described leg assembly is adjustable structure, and it comprises the supporting leg swivel nut that is fixed on the screen work base plate and the supporting leg that is threaded with the supporting leg swivel nut.
A kind of improvement as the utility model nuclear power plant spent fuel storage rack, offer threaded hole on the described storage cell base, the outer wall of supporting leg swivel nut is terraced structure, the outer wall top of supporting leg swivel nut is provided with external thread, evenly offer perforation on the screen work base plate, after the supporting leg swivel nut passes the perforation of screen work base plate, the top from the screen work base plate stretch out and the mode that is threaded connection with store the cell base and be connected.
Compared with prior art, the utility model nuclear power plant spent fuel storage rack is to be formed by the independent cell unit combination of storing, the structure of all storage cells is in full accord, therefore have the characteristics that the modularization of being easy to is made, and the pitch of screen work can freely be adjusted as required, also can adapt to the neutron absorber of different-thickness, thereby satisfy the storage requirement of polytype fuel assembly, adapt to the designing requirement of a district and two district's spent fuel storage racks.
Description of drawings
Below in conjunction with the drawings and specific embodiments, the utility model nuclear power plant spent fuel storage rack and useful technique effect thereof are elaborated, wherein:
Fig. 1 is the structural representation of the utility model nuclear power plant spent fuel storage rack.
Fig. 2 is the schematic top plan view of the utility model nuclear power plant spent fuel storage rack.
Fig. 3 is the independent structural representation of storing little chamber unit of the utility model nuclear power plant spent fuel storage rack.
Fig. 4 is the independent structural representation of storing the storage cell base of little chamber unit among Fig. 3.
Fig. 5 is the synoptic diagram of the strip-type fixed sturcture of the utility model nuclear power plant spent fuel storage rack.
Fig. 6 is the structural representation of the leg assembly of the utility model nuclear power plant spent fuel storage rack.
Fig. 7 is the storage cell top syndeton synoptic diagram of the utility model nuclear power plant spent fuel storage rack.
Embodiment
See also Fig. 1 and Fig. 2, the utility model nuclear power plant spent fuel storage rack comprises stores cell 20, strip-type fixed sturcture, screen work base plate 40 and leg assembly 90.
Please consult simultaneously Fig. 3 to Fig. 4, storing cell 20 is the independent little chamber unit of storing, and each is independently stored little chamber unit and all comprises sleeve 22, stores cell base 24, neutron absorber and cladding plate 28.Sleeve 22 is square sleeve, and neutron absorber is fixed in by cladding plate 28 on the outer wall of sleeve 22, and it also is on the square storage cell base 24 that whole sleeve 22 is fixed to by the mode of welding, thereby forms a little chamber unit of independent storage.The center of storing cell base 24 offers a larger threaded hole 240, offers four less connecting holes 241 and four trapezoidal discharge orifices 242 all around.
The connecting hole (not shown) that the connecting hole 241 that evenly offers on the screen work base plate 40 and store cell base 24 is corresponding, the independent connecting hole of little chamber unit by correspondence of storing is fixed on the screen work base plate 40 in bolted mode.The corresponding discharge orifice 42(in the discharge orifice 242 that also offers on the screen work base plate 40 and store cell base 24 is as shown in Figure 6), the fuel assembly that cools off the cell 20 wherein can be stored so that chilled water flows into from the screen work bottom in these discharge orifices 242,42.
See also Fig. 1 and Fig. 5, strip-type fixed sturcture of the present utility model comprises dividing plate 60, peripheral board 30 and angle steel column 32.Dividing plate 60 equals the strip plate structure in adjacent storage cell gap for thickness, and it is arranged at adjacent independent the storage between the little chamber unit, thus Effective Raise the bulk strength of nuclear power plant's spent fuel storage rack.The mode of these dividing plates 60 that are connected to " well " font by welding is fixed on the peripheral board 30 that is around in around the screen work, and 30 of peripheral boards are supported by the angle steel column 32 that is fixed on the base plate 40.In order to guarantee strength of joint, can be as required on the short transverse of screen work the interval multi-turn peripheral board 30 is set.
See also Fig. 6, leg assembly 90 is adjustable structure, and it comprises supporting leg swivel nut 92 and supporting leg 94.Supporting leg swivel nut 92 is hollow-core construction, and there is internal thread its inside, and outer wall then is terraced structure, and the top of outer wall is provided with external thread.Evenly offer perforation on the screen work base plate 40, after supporting leg swivel nut 92 passed the perforation of screen work base plate 40, stretched out from screen work base plate 40 on the top.During installation, in the threaded hole 240 of the little chamber unit of independent storage that the insertion of the top of supporting leg swivel nut 92 is corresponding, and the mode that is threaded connection is fixed to one another with storage cell base 24.In order to guarantee strength of joint, also adopt welding manner to reinforce between supporting leg swivel nut 92 and the screen work base plate 40.Supporting leg 94 inserts in the supporting leg swivel nut 92, and is connected with supporting leg swivel nut 92 by screw thread, therefore can utilize special adjustment means that the height of supporting leg 94 is regulated.
In addition, see also Fig. 7, for the convenient fuel assembly pulls and pushes operation in storing cell 20, the utility model will independent sleeve 22 tops of storing little chamber unit expands into the have certain angle taper type opening of (being 10 degree shown in Fig. 7), thereby forms the spigot surface 220 of inclination at the top of sleeve 22.During installation, two adjacent independent sleeve 22 welded top of storing little chamber unit are fixed, so both can form at the screen work top jointless structure, again can the dismounting of convenient fuel assembly in storing cell 20.
By above description as can be known, the utility model nuclear power plant spent fuel storage rack is to be formed by the independent cell unit combination of storing, the structure of all storage cells 20 is in full accord, therefore have the characteristics that the modularization of being easy to is made, and the pitch of screen work can freely be adjusted as required, the neutron absorber that also can adapt to different-thickness satisfies the storage requirement of polytype fuel assembly, adapts to the designing requirement of a district and two district's spent fuel storage racks; It is with bolts with screen work base plate 40 to store cell 20, the distortion that can effectively avoid welded structure to cause; The design of dividing plate 60 has guaranteed that then spent fuel storage rack has larger overall construction intensity.
In sum, the utility model nuclear power plant spent fuel storage rack can be in the fuel for nuclear power plant factory building storage fuel assembly of safety in the Spent Fuel Pool, keep the operation of subcritical safety and spentnuclear fuel and jam fuel assembly not when storing with the pond of guaranteeing the spent fuel storage rack place, thereby keep the safe storage of nuclear power plant's fuel assembly of whole phase in longevity.
In other embodiments, the structure of leg assembly 90, quantity or arrangement can be different; According to the storage needs of natural fuel assembly, to store the size of cell 20 and can make corresponding change, quantity also can be different with layout, such as 6 * 6,9 * 9,12 * 10 or 12 * 11 etc.
The according to the above description announcement of book and instruction, the utility model those skilled in the art can also carry out suitable change and modification to above-mentioned embodiment.Therefore, the embodiment that discloses and describe above the utility model is not limited to also should fall in the protection domain of claim of the present utility model modifications and changes more of the present utility model.In addition, although used some specific terms in this instructions, these terms do not consist of any restriction to the utility model just for convenience of description.
Claims (10)
1. nuclear power plant's spent fuel storage rack, comprise and store cell, screen work base plate and leg assembly, it is characterized in that: described storage cell is the little chamber unit of independent storage that is fixed on the screen work base plate, each is independently stored little chamber unit and all comprises sleeve, stores cell base, neutron absorber and cladding plate, sleeve is fixed in to be stored on the cell base, and neutron absorber is fixed in the outer wall of sleeve by cladding plate.
2. nuclear power plant according to claim 1 spent fuel storage rack is characterized in that: also comprise being interspersed between the adjacent storage cell its dividing plate that is connected and fixed.
3. nuclear power plant according to claim 2 spent fuel storage rack, it is characterized in that: the thickness of described dividing plate equals the gap of the sleeve of adjacent storage cell.
4. nuclear power plant according to claim 2 spent fuel storage rack, it is characterized in that: also comprise peripheral board and column, described dividing plate is connected to " well " font and the mode by welding is fixed on the peripheral board that is around in around the screen work, and column is fixed on the screen work base plate and to peripheral board and supports.
5. nuclear power plant according to claim 1 spent fuel storage rack, it is characterized in that: described sleeve is square sleeve, and storing the cell base is plinth, and the mode of sleeve by welding is fixed in stores on the cell base.
6. nuclear power plant according to claim 1 spent fuel storage rack is characterized in that: offer the discharge orifice on the described storage cell base, offer the discharge orifice corresponding with the discharge orifice of storing the cell base on the screen work base plate.
7. nuclear power plant according to claim 1 spent fuel storage rack, it is characterized in that: offer connecting hole on the described storage cell base, evenly offer the connecting hole corresponding with the connecting hole of storing the cell base on the screen work base plate, the little chamber unit of independent storage is fixed on the screen work base plate in the mode that is threaded by the connecting hole of correspondence.
8. nuclear power plant according to claim 1 spent fuel storage rack, it is characterized in that: described sleeve is square sleeve, the top of square sleeve is expanded into the taper type opening with certain angle and is formed the spigot surface of inclination at the top of sleeve, and two adjacent independent sleeve tops of storing little chamber unit are adopted and are welded and fixed.
9. nuclear power plant according to claim 1 spent fuel storage rack, it is characterized in that: described leg assembly is adjustable structure, it comprises the supporting leg swivel nut that is fixed on the screen work base plate and the supporting leg that is threaded with the supporting leg swivel nut.
10. nuclear power plant according to claim 9 spent fuel storage rack, it is characterized in that: offer threaded hole on the described storage cell base, the outer wall of supporting leg swivel nut is terraced structure, the outer wall top of supporting leg swivel nut is provided with external thread, evenly offer perforation on the screen work base plate, after the supporting leg swivel nut passes the perforation of screen work base plate, the top from the screen work base plate stretch out and the mode that is threaded connection with store the cell base and be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203377129U CN202887753U (en) | 2012-07-12 | 2012-07-12 | Spent fuel storage grid of nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203377129U CN202887753U (en) | 2012-07-12 | 2012-07-12 | Spent fuel storage grid of nuclear power plant |
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| Publication Number | Publication Date |
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| CN202887753U true CN202887753U (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012203377129U Expired - Lifetime CN202887753U (en) | 2012-07-12 | 2012-07-12 | Spent fuel storage grid of nuclear power plant |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102737741A (en) * | 2012-07-12 | 2012-10-17 | 中广核工程有限公司 | Spent fuel storage framework of nuclear power plant |
| CN104299656A (en) * | 2013-07-18 | 2015-01-21 | 国立大学法人蔚山科学技术大学校产学协力团 | Decay heat removal system for cooling nuclear power plant |
| CN105070337A (en) * | 2015-08-31 | 2015-11-18 | 上海核工程研究设计院 | Spent fuel storage system with interpolating type neutron absorption device |
| CN105931687A (en) * | 2016-06-14 | 2016-09-07 | 中国核电工程有限公司 | Spent fuel storage cell |
| CN107949885A (en) * | 2015-09-11 | 2018-04-20 | Tn国际公司 | For storing and/or transporting the improved storage device of nuclear fuel assembly |
| CN110415853A (en) * | 2019-06-25 | 2019-11-05 | 中广核工程有限公司 | Reprocessing plant irradiated fuel assembly stores and transports hanging basket |
-
2012
- 2012-07-12 CN CN2012203377129U patent/CN202887753U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102737741A (en) * | 2012-07-12 | 2012-10-17 | 中广核工程有限公司 | Spent fuel storage framework of nuclear power plant |
| CN104299656A (en) * | 2013-07-18 | 2015-01-21 | 国立大学法人蔚山科学技术大学校产学协力团 | Decay heat removal system for cooling nuclear power plant |
| CN105070337A (en) * | 2015-08-31 | 2015-11-18 | 上海核工程研究设计院 | Spent fuel storage system with interpolating type neutron absorption device |
| CN107949885A (en) * | 2015-09-11 | 2018-04-20 | Tn国际公司 | For storing and/or transporting the improved storage device of nuclear fuel assembly |
| CN105931687A (en) * | 2016-06-14 | 2016-09-07 | 中国核电工程有限公司 | Spent fuel storage cell |
| CN110415853A (en) * | 2019-06-25 | 2019-11-05 | 中广核工程有限公司 | Reprocessing plant irradiated fuel assembly stores and transports hanging basket |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130417 |
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| CX01 | Expiry of patent term |