CN103137219B - A kind of reactor layered fuel assembly - Google Patents
A kind of reactor layered fuel assembly Download PDFInfo
- Publication number
- CN103137219B CN103137219B CN201310043081.9A CN201310043081A CN103137219B CN 103137219 B CN103137219 B CN 103137219B CN 201310043081 A CN201310043081 A CN 201310043081A CN 103137219 B CN103137219 B CN 103137219B
- Authority
- CN
- China
- Prior art keywords
- box
- high temperature
- low temperature
- moderator
- base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Landscapes
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The invention discloses a kind of reactor layered fuel assembly, comprise fuel rod box, the inner space of fuel rod box forms coolant flow passages, described fuel rod box comprises the high temperature box (1) and low temperature box (2) that are interconnected, in high temperature box (1), the cross-sectional area of coolant flow passages is greater than the cross-sectional area of coolant flow passages in low temperature box (2), high temperature box (1) is made up of heat-resisting alloy, and low temperature box (2) is made up of zircaloy or beryllium alloy.The present invention adopts hierarchy, make the coolant temperature in low temperature box (2) lower, low temperature box (2) and the parts that are attached thereto thereof can be adopted and absorb the less zircaloy of neutron or beryllium alloy, relative to existing fuel assembly, substantially increase the neutron economy of reactor.
Description
Technical field
The present invention relates to nuclear industry field, be specifically related to a kind of reactor fuel assemblies.
Background technology
For a long time, the neutron economy of reactor is nuclear energy industry issues that need special attention always.Improve the leakage being at all minimizing neutron of pile neutron economy and unhelpful absorption.Concerning fuel assembly, its structured material and cladding materials need the alloy as far as possible selecting neutron-absorbing less.
In Supercritical-Pressure Light Water Cooled Reactor, fuel assembly is single layer structure, the cooling water flow conduits self-consistentency of its inside, and chilled water enters from the entrance of fuel assembly, after fuel rod heating, then is discharged by the outlet of fuel assembly.Under this configuration, fuel rod can be consistent by being heated into before and after the temperature of chilled water.
Because Supercritical-Pressure Light Water Cooled Reactor operating pressure and temperature are all very high, fuel assembly structure material can not adopt and absorb the less zircaloy of neutron, and often selects stainless steel or nickel-base alloy isotonic to absorb more exotic material.Such as: the supercritical fuel modular construction material of European Union's exploitation is stainless steel, and cladding materials is nickel-base alloy; Supercritical fuel assembly involucrum and the structured material of Japan's exploitation all use nickel-base alloy.Fuel assembly structure is more complicated, the stainless steel used or nickel-base alloy more, the unhelpful absorption of neutron is more, and the neutron economy of reactor is poorer.
Summary of the invention
Namely object of the present invention is to provide a kind of reactor fuel assemblies, rust steel or nickel-base alloy isotonic can only be used to absorb more exotic material, cause the defect of the neutron economy difference of reactor to overcome existing supercritical fuel assembly.
Object of the present invention is achieved through the following technical solutions:
A kind of reactor layered fuel assembly, comprise fuel rod box, the inner space of fuel rod box forms coolant flow passages, described fuel rod box comprises the high temperature box and low temperature box that are interconnected, in high temperature box, the volume of coolant flow passages is greater than the volume of coolant flow passages in low temperature box, high temperature box is made up of heat-resisting alloy, and low temperature box is made up of zircaloy or beryllium alloy.
Inventor finds through research, chilled water can be heated to higher temperature (being generally more than 500 DEG C) in existing supercritical fuel assembly, this temperature is unaffordable for the material (as zircaloy or beryllium alloy) that neutron-absorbing amount is less, therefore, existing supercritical fuel assembly can only use rust steel or nickel-base alloy isotonic to absorb more exotic material, causes the neutron economy of reactor poor.In order to obtain the high fuel assembly of neutron economy, inventor wishes zircaloy or beryllium alloy to be farthest applied in supercritical fuel assembly, and problems faced is how to reduce coolant water temperature.Finally, the technical scheme of inventor's invention adopts hierarchical design, and fuel assembly is divided into two parts, carrys out the speed of controlled cooling model water by fuel rod by the volume controlling cooling water flow conduits in two parts.In low temperature box, due to the small volume of cooling water flow conduits, chilled water is by the speed of low temperature box, and chilled water is with the shorter time by fuel rod, and the heat time of fuel rod to chilled water is short, makes the temperature of chilled water in low temperature box lower.Chilled water through heating enters high temperature box from low temperature box, because the volume of cooling water flow conduits in high temperature box is comparatively large, cooling water flow is slow by the speed of high temperature box, and the time that chilled water contacts with fuel rod is long, fuel rod can, fully to chilled water heating, make the temperature of chilled water reach predetermined temperature.Adopt said structure, when satisfied outlet cooling water temperature reaches predetermined value, make coolant water temperature in low temperature box lower than the coolant water temperature in high temperature box, thus neutron-absorbing can be used less but the zircaloy of non-refractory or beryllium alloy manufacture low temperature box, improve the neutron economy of reactor.
As first prioritization scheme of the present invention, described high temperature box and low temperature box are multiple.By adjusting the quantity of high temperature box and low temperature box, further the heat time of adjustment chilled water, the present invention is made to have more controllability and applicability.
As the second prioritization scheme of the present invention, also comprise fuel rod, fuel rod is arranged in described high temperature box and low temperature box respectively.In high temperature box and low temperature box, fuel rod is set respectively, low temperature box is separated with the chilled water in high temperature box and heats.
As the further improvement of the second prioritization scheme, the quantity of described high temperature box internal combustion charge bar is less than the quantity of described fuel rod in described low temperature box.Make the volume of coolant flow passages in high temperature box be greater than the volume of coolant flow passages in low temperature box, can accomplished in many ways be adopted, such as: identical in length, when wall thickness is identical, the cross-sectional area of high temperature box is designed be greater than the cross-sectional area of low temperature box; Length is identical, when cross-sectional area is identical, is designed by the wall thickness of high temperature box be less than the wall thickness of low temperature box; When wall thickness is identical with cross-sectional area, the Design of length of high temperature box must be greater than the length of low temperature box.But, above-mentioned three kinds of modes all Shortcomings: in reactor, the installation of fuel assembly is comparatively tight, the cross-sectional area of high temperature box is designed be greater than low temperature box cross-sectional area must cause fuel assembly that difficulty is installed; The wall thickness of high temperature box is designed be less than the wall thickness of low temperature box, not only add material cost, also make the bad stability of fuel assembly; The Design of length of high temperature box must be greater than the length of low temperature box, add the axial length of fuel assembly, fuel assembly be taken up room larger.Above-mentioned three kinds of modes are combined arbitrarily and also there are the problems referred to above.It should be noted that, although the combination of above-mentioned three kinds of modes or three exists certain not enough, can goal of the invention be realized, within protection scope of the present invention.
Finally, inventor carrys out the cross-sectional area of controlled cooling model agent runner by the mode controlling fuel rod quantity in high temperature box and low temperature box, thus the size of controlled cooling model agent runner.When length, cross-sectional area and wall thickness are all identical, in low temperature box, the quantity of fuel rod is many, and the space that fuel rod takies is large, and in low temperature box, the cross-sectional area of coolant flow passages is naturally less, otherwise in high temperature box, the cross-sectional area of coolant flow passages is larger.Adopt the installation not affecting fuel assembly in this way, do not increase material cost, also do not affect the structural stability of fuel assembly.
As the third prioritization scheme of the present invention, also comprise the high temperature base be made up of heat-resisting alloy, high temperature moderator box and high temperature moderator pipe, also comprise the low temperature base be made up of zircaloy or beryllium alloy, low temperature moderator box and low temperature moderator pipe, high temperature moderator box is arranged in described high temperature box, low temperature moderator box is arranged in described low temperature box, high temperature base is communicated with described high temperature box, low temperature base is communicated with described low temperature box, high temperature moderator box is communicated with low temperature moderator box, high temperature moderator pipe runs through high temperature base, high temperature moderator pipe is connected with high temperature moderator box, low temperature moderator pipe runs through low temperature base, low temperature moderator pipe is connected with low temperature moderator box, high temperature base offers coolant outlet, low temperature base offers cooling water inlet.
High temperature base and low temperature base are used for being connected with other device of reactor, and provide export and import for chilled water and moderator.Moderator box and moderator pipe are used for for moderator provides a complete circulation duct.Cooling medium enters from the coolant inlet low temperature base, is then flowed out by low temperature box, high temperature box, high temperature base successively.Moderator enters from low temperature moderator pipe, is then flowed out by low temperature moderator box, high temperature moderator box, high temperature moderator pipe successively.Said structure can make moderator and cooling medium shunt, and makes moderator consistent with the flow of cooling medium, shortens flow process, makes slowing down even, improves reactor core security.In addition, in order to strengthen the neutron economy of reactor further, coordinate the different temperatures of chilled water in high temperature box and low temperature box, adopt heat-resisting alloy to make high temperature base, high temperature moderator box and high temperature moderator pipe, adopt zircaloy or beryllium alloy to make low temperature base, low temperature moderator box and low temperature moderator pipe.
As the further optimization of the third prioritization scheme of the present invention, also comprise the connecting box and connecting pipe that are made up of heat-resisting alloy, described high temperature box is communicated with by connecting box with low temperature box, and connecting pipe is arranged in connecting box, and connecting pipe is communicated with described high temperature moderator box and low temperature moderator box.
Heat if the chilled water flowed out from low temperature box enters in high temperature box immediately, in high temperature box, the partial heat of chilled water can be directly conducted to the chilled water in low temperature box, and cooling water temperature in low temperature box is raised.In order to solve emerging problem, set up connecting box, connecting box provides spatial transition for the chilled water in the chilled water in low temperature box and high temperature box, prevent chilled water in high temperature box directly by heat conduction in the chilled water in low temperature box.Connecting pipe makes the moderator in connecting box and chilled water shunt.In connecting box, the temperature of chilled water can, higher than the temperature of chilled water in low temperature box, therefore, adopt heat-resisting alloy to form connecting box and connecting pipe.
As the further optimization of the third prioritization scheme of the present invention, described coolant outlet is the steam window being arranged at high temperature base side.High temperature base is connected with reactor vapor chamber, and steam window is arranged in reactor vapor chamber, and steam window is heated to form the chilled water of steam for discharging, and steam is exported by reactor vapor chamber.
As the further optimization of the third prioritization scheme of the present invention, also comprise the high temperature base web member be made up of heat-resisting alloy, the low temperature base web member be made up of zircaloy or beryllium alloy, described high temperature base is communicated with described high temperature box by high temperature base web member, and described low temperature base is communicated with described low temperature box by low temperature base web member.
As the further optimization of the third prioritization scheme of the present invention, also comprise the spreader plate be made up of heat-resisting alloy, spreader plate is arranged in described high temperature base and high temperature base inside is divided into two chambers do not communicated, described two chambers respectively high temperature box described with two are communicated with, two described high temperature moderator pipes run through two chambers respectively, and high temperature moderator pipe connects with the high temperature moderator box in corresponding high temperature box.
In order to make structure of the present invention compacter, connecting two high temperature boxes with a high temperature base simultaneously, in order to make the chilled water shunting gone out in two high temperature boxes, in high temperature base, setting up spreader plate, high temperature base inside is divided into two independently chambers.In order to the high temperature moderator box in corresponding two high temperature boxes, be naturally also provided with two high temperature moderator pipes.In order to the temperature enabling spreader plate bear high-temperature cooling water, heat-resisting alloy is adopted to make spreader plate.
As the further optimization of the third prioritization scheme of the present invention, described low temperature base is communicated with two described low temperature box, and two low temperature moderator pipes run through low temperature base, and two described low temperature moderator pipes respectively low temperature moderator box described with two are connected.
In order to make structure of the present invention compacter, connecting two low temperature box with a low temperature base simultaneously, in order to the low temperature moderator box in corresponding two low temperature box, being naturally also provided with two low temperature moderator pipes.
It should be noted that, above-mentioned heat-resisting alloy refers to that serviceability temperature is more than 600 DEG C, has the alloy of good thermal stability and heat resistance, and the most widely used is in the art stainless steel or nickel-base alloy, and other heat-resisting alloy also can be used for the present invention.
In sum, advantage of the present invention and beneficial effect are:
1. adopt hierarchy, the different high temperature box of the cross-sectional area of coolant flow passages and low temperature box are set, make the coolant temperature in low temperature box lower, low temperature box and the parts that are attached thereto thereof can be adopted and absorb the less zircaloy of neutron or beryllium alloy, relative to existing fuel assembly, substantially increase the neutron economy of reactor;
2. cooling medium and moderator are shunted, and cooling medium flows to consistent with moderator, shortens flow process, make slowing down even, improve reactor core security;
3. be provided with connecting box, for the chilled water in the chilled water in low temperature box and high temperature box provides spatial transition, prevent chilled water in high temperature box directly by heat conduction in the chilled water in low temperature box, ensure effect of the present invention;
4. compact conformation.
Accompanying drawing explanation
In order to be illustrated more clearly in embodiments of the invention, be briefly described to the accompanying drawing used required for describing in the embodiment of the present invention below.Apparent, the accompanying drawing in the following describes is only some embodiments recorded in the present invention, to those skilled in the art, when not paying creative work, according to accompanying drawing below, can also obtain other accompanying drawing.
Fig. 1 is structural representation of the present invention;
Wherein, the parts title that Reference numeral is corresponding is as follows:
1-high temperature box, 2-low temperature box, 3-fuel rod, 41-high temperature base, 42-low temperature base, 51-high temperature moderator box, 52-low temperature moderator box, 61-high temperature moderator pipe, 62-low temperature moderator pipe, 7-connecting box, 8-connecting pipe, 9-steam window, 10-high temperature base web member, 11-low temperature base web member, 12-spreader plate, 131-high-temperature substrates, 132-low temperature substrates, 141-high temperature upper junction plate, 142-low temperature upper junction plate, 151-high temperature lower connecting plate, 152-low temperature lower connecting plate.
Embodiment
In order to make those skilled in the art understand the present invention better, below in conjunction with the accompanying drawing in the embodiment of the present invention, clear, complete description is carried out to the technical scheme in the embodiment of the present invention.Apparent, embodiment described below is only the part in the embodiment of the present invention, instead of all.Based on the embodiment that the present invention records, other all embodiment that those skilled in the art obtain when not paying creative work, all in the scope of protection of the invention.
Embodiment 1:
As shown in Figure 1, a kind of reactor layered fuel assembly, comprises fuel rod box, and the inner space of fuel rod box forms coolant flow passages, described fuel rod box comprises the high temperature box 1 and low temperature box 2 that are interconnected, and in high temperature box 1, the volume of coolant flow passages is greater than the volume of coolant flow passages in low temperature box 2.
In low temperature box 2, due to the small volume of cooling water flow conduits, chilled water is by the speed of low temperature box 2, and chilled water is with the shorter time by fuel rod, and the heat time of fuel rod to chilled water is short, makes the temperature of chilled water in low temperature box 2 lower.Chilled water through heating enters high temperature box 1 from low temperature box 2, because in high temperature box 1, the volume of cooling water flow conduits is larger, cooling water flow is slow by the speed of high temperature box 1, the time that chilled water contacts with fuel rod is long, fuel rod can, fully to chilled water heating, make the temperature of chilled water reach predetermined temperature.
Because the temperature in low temperature box 2 is low, the zircaloy that low temperature box 2 adopts neutron-absorbing amount less is formed, to improve the neutron economy of reactor.Because the temperature in high temperature box 1 is high, high temperature box 1 adopts stainless steel or nickel-base alloy to form, to improve heat resistance.
The object of the present embodiment is the fuel rod box providing a kind of hierarchy, and the other parts in fuel assembly can adopt existing techniques in realizing.
Embodiment 2:
As described in Figure 1, on the basis of embodiment 1, high temperature box 1 and low temperature box 3 are set to multiple.By the quantity of adjustment high temperature box 1 with low temperature box 2, further the heat time of adjustment chilled water, make the cooling water temperature in low temperature box control within the scope of low temperature box strength of structural materials, make the cooling water outlet temperature of high temperature box reach predetermined value.The present embodiment makes the present invention have more controllability and applicability.
Embodiment 3:
As shown in Figure 1, on the basis of embodiment 1, make restriction to the layout of fuel rod 3, fuel rod 3 is arranged in described high temperature box 1 and low temperature box 2 respectively, to separate heat low temperature box 2 with the chilled water in high temperature box 1.
Embodiment 4:
As shown in Figure 1, on the basis of embodiment 3, the quantity of fuel rod 3 is limited.When high temperature box 1 is identical with wall thickness with the cross-sectional area of low temperature box 2, the quantity of high temperature box 1 internal combustion charge bar 3 is less than the quantity of described fuel rod 3 in described low temperature box 2.In low temperature box 2, the quantity of fuel rod 3 is more, and it is comparatively large that fuel rod 3 occupies space in low temperature box 2, makes the cross-sectional area of the coolant flow passages in low temperature box 2 be less than the cross-sectional area of coolant flow passages in high temperature box 1.
It should be noted that, the cross-sectional area of coolant flow passages in high temperature box 1 is made to be greater than the cross-sectional area of coolant flow passages in low temperature box 2, can accomplished in many ways be adopted, such as: when wall thickness is identical, the cross-sectional area of high temperature box 1 be designed be greater than the cross-sectional area of low temperature box 2; When cross-sectional area is identical, the wall thickness of high temperature box 1 is designed be less than the wall thickness of low temperature box 2.But, above-mentioned two kinds of modes all Shortcomings: in reactor, the installation of fuel assembly is comparatively tight, the cross-sectional area of high temperature box 1 is designed be greater than low temperature box 2 cross-sectional area must cause fuel assembly that difficulty is installed; The wall thickness of high temperature box 1 is designed be less than the wall thickness of low temperature box 2, not only add material cost, also make the bad stability of fuel assembly.Above-mentioned two kinds of modes are combined and also there are the problems referred to above.Although above-mentioned two kinds of modes or both combinations exist certain not enough, goal of the invention can be realized, within protection scope of the present invention.The quantity controlling fuel rod 3 in addition on the basis of above-mentioned two kinds of modes or both combinations also can realize object of the present invention, within protection scope of the present invention.
The present embodiment is ensureing a kind of preferred version under fuel assembly mounting process, stability and low cost prerequisite.
Embodiment 5:
As shown in Figure 1, in embodiment 1 ~ 4 any one scheme basis on, also comprise the high temperature base 41 be made up of stainless steel or nickel-base alloy, high temperature moderator box 51 and high temperature moderator pipe 61, also comprise the low temperature base 42 be made up of zircaloy, low temperature moderator box 52 and low temperature moderator pipe 62, high temperature moderator box 51 is arranged in described high temperature box 1, low temperature moderator box 52 is arranged in described low temperature box 2, high temperature base 41 is communicated with described high temperature box 1, low temperature base 42 is communicated with described low temperature box 2, high temperature moderator box 51 is communicated with low temperature moderator box 52, high temperature moderator pipe 61 runs through high temperature base 41, high temperature moderator pipe 61 is connected with high temperature moderator box 51, low temperature moderator pipe 62 runs through low temperature base 42, low temperature moderator pipe 62 is connected with low temperature moderator box 52, high temperature base 41 offers coolant outlet, low temperature base 42 offers cooling water inlet.
High temperature base 41 and low temperature base 42 for being connected with the stationary installation of reactor, and provide export and import for chilled water and moderator.Moderator box and moderator pipe are used for for moderator provides a complete circulation duct.Cooling medium enters from the coolant inlet low temperature base 42, is then flowed out by low temperature box 2, high temperature box 1, high temperature base 41 successively.Moderator enters from low temperature moderator pipe 62, is then flowed out by low temperature moderator box 52, high temperature moderator box 51, high temperature moderator pipe 61 successively.Said structure can make moderator and cooling medium shunt, and makes moderator consistent with the flow of cooling medium.In addition, in order to strengthen the neutron economy of reactor further, coordinate the different temperatures of chilled water in high temperature box 1 and low temperature box 2, adopt stainless steel or nickel-base alloy to make high temperature base 41, high temperature moderator box 51 and high temperature moderator pipe 61, adopt zircaloy to make cryotron seat 42, low temperature moderator box 52 and low temperature moderator pipe 62.
Embodiment 6:
Heat if the chilled water flowed out from low temperature box 2 enters in high temperature box 1 immediately, in high temperature box 1, the partial heat of chilled water can be directly conducted to the chilled water in low temperature box 2, and cooling water temperature in low temperature box 2 is raised.In order to solve emerging problem, as shown in Figure 1, the present embodiment is on the basis of embodiment 5, set up connecting box 7 and the connecting pipe 8 of stainless steel or nickel-base alloy formation, described high temperature box 1 is communicated with by connecting box 7 with low temperature box 2, connecting pipe 8 is arranged in connecting box 7, and connecting pipe 8 is communicated with described high temperature moderator box 51 and low temperature moderator box 52.
Connecting box 7 provides spatial transition for the chilled water in the chilled water in low temperature box 2 and high temperature box 1, prevent chilled water in high temperature box 1 directly by heat conduction in the chilled water in low temperature box 2.Connecting pipe 8 makes the moderator in connecting box 7 and chilled water shunt.In connecting box 7, the temperature of chilled water can, higher than the temperature of chilled water in low temperature box 2, therefore, adopt stainless steel or nickel-base alloy to form connecting box 7 and connecting pipe 8.
Embodiment 7:
As shown in Figure 1, on the basis of embodiment 5, described coolant outlet is defined as the steam window 9 being arranged at high temperature base 41 side.High temperature base 41 is connected with reactor vapor chamber, and steam window 9 is arranged in reactor vapor chamber, and steam window 9 is heated to form the chilled water of steam for discharging, and steam is exported by reactor vapor chamber.
Embodiment 8:
As shown in Figure 1, on the basis of embodiment 5, set up the high temperature base web member 10 be made up of stainless steel or nickel-base alloy, the low temperature base web member 11 be made up of zircaloy, described high temperature base 41 is communicated with described high temperature box 1 by high temperature base web member 10, and described low temperature base 42 is communicated with described low temperature box 2 by low temperature base web member 11.
Embodiment 9:
In order to make structure of the present invention compacter, as shown in Figure 1, on the basis of embodiment 5, set up spreader plate 12, in order to make the chilled water shunting gone out in two high temperature boxes 1, spreader plate 12 is arranged at two chambers being divided into high temperature base 41 inside in described high temperature base 41 and not communicating, and described two chambers respectively high temperature box 1 described with two are communicated with.In order to the high temperature moderator box 51 in corresponding two high temperature boxes 1, naturally two high temperature moderator pipes 61 are also provided with, two described high temperature moderator pipes 61 run through two chambers respectively, and high temperature moderator pipe 61 connects with the high temperature moderator box 51 in corresponding high temperature box 1.In order to the temperature making spreader plate 12 can bear high-temperature cooling water, stainless steel or nickel-base alloy is adopted to make spreader plate 12.
Embodiment 10:
In order to make structure of the present invention compacter, as shown in Figure 1, on the basis of embodiment 5, described low temperature base 42 is communicated with two described low temperature box 2, two low temperature moderator pipes 62 run through the described low temperature moderator pipe 62 of low temperature base 42, two respectively low temperature moderator box 52 described with two be connected.
Significantly, scheme any in embodiment 1 ~ embodiment 9, according to the description in embodiment 1 ~ embodiment 9, can combine to realize object of the present invention by those skilled in the art.
In order to originally be convenient to understand, also disclosed embodiment 10 below, embodiment 10 is the combination of scheme in embodiment 1 ~ embodiment 9.
Embodiment 11:
As shown in Figure 1, a kind of reactor layered fuel assembly, comprise fuel rod box, the inner space of fuel rod box forms coolant flow passages, described fuel rod box comprises the high temperature box 1 and low temperature box 2 that are interconnected, high temperature box 1 is identical with wall thickness with the cross-sectional area of low temperature box 2, also comprise fuel rod 3, fuel rod 3 is arranged in described high temperature box 1 and low temperature box 2 respectively, the quantity of described high temperature box 1 internal combustion charge bar 3 is less than the quantity of described fuel rod 3 in described low temperature box 2, the cross-sectional area of coolant flow passages in high temperature box 1 is made to be greater than the cross-sectional area of coolant flow passages in low temperature box 2, high temperature box 1 is made up of stainless steel or nickel-base alloy, low temperature box 2 is made up of zircaloy.
Also comprise the high temperature base 41 be made up of stainless steel or nickel-base alloy, high temperature moderator box 51 and high temperature moderator pipe 61, also comprise the low temperature base 42 be made up of zircaloy, low temperature moderator box 52 and low temperature moderator pipe 62, high temperature moderator box 51 is arranged in described high temperature box 1, low temperature moderator box 52 is arranged in described low temperature box 2, high temperature base 41 is communicated with described high temperature box 1, low temperature base 42 is communicated with described low temperature box 2, high temperature moderator box 51 is communicated with low temperature moderator box 52, high temperature moderator pipe 61 runs through high temperature base 41, high temperature moderator pipe 61 is connected with high temperature moderator box 51, low temperature moderator pipe 62 runs through low temperature base 42, low temperature moderator pipe 62 is connected with low temperature moderator box 52, high temperature base 41 offers coolant outlet, low temperature base 42 offers cooling water inlet.Described coolant outlet is the steam window 9 being arranged at high temperature base 41 side.Also comprise the spreader plate 12 be made up of stainless steel or nickel-base alloy, spreader plate 12 is arranged at two chambers being divided into high temperature base 41 inside in described high temperature base 41 and not communicating, and each chamber comprises a steam window 9.Described two chambers respectively high temperature box 1 described with two are communicated with, and two described high temperature moderator pipes 61 run through two chambers respectively, and high temperature moderator pipe 61 connects with the high temperature moderator box 51 in corresponding high temperature box 1.Also comprise the connecting box 7 and connecting pipe 8 that are made up of stainless steel or nickel-base alloy, described high temperature box 1 is communicated with by connecting box 7 with low temperature box 2, and connecting pipe 8 is arranged in connecting box 7, and connecting pipe 8 is communicated with described high temperature moderator box 51 and low temperature moderator box 52.Also comprise the high temperature base web member 10 be made up of stainless steel or nickel-base alloy, the low temperature base web member 11 be made up of zircaloy, described high temperature base 41 is communicated with described high temperature box 1 by high temperature base web member 10, and described low temperature base 42 is communicated with described low temperature box 2 by low temperature base web member 11.Described low temperature base 42 is communicated with two described low temperature box 2, and two low temperature moderator pipes 62 run through the described low temperature moderator pipe 62 of low temperature base 42, two and are connected with low temperature moderator box 52 described with two respectively.
Embodiment 12:
The present embodiment, on the basis of embodiment 10, further illustrates the annexation between each parts.
As shown in Figure 1, high temperature base 41 is connected with high temperature base web member 10 by high-temperature substrates 131, high temperature base web member 10 is connected with high temperature box 1 by high temperature upper junction plate 141, high temperature box 1 is connected with connecting box 7 by high temperature lower connecting plate 151, connecting box 7 is connected with low temperature box 2 by low temperature upper junction plate 142, low temperature box 2 is connected with low temperature base web member 11 by low temperature lower connecting plate 152, and low temperature base web member 11 is connected with low temperature base 42 by low temperature substrates 132.Wherein, high-temperature substrates 131, low temperature substrates 132, high temperature upper junction plate 141, low temperature upper junction plate 142, high temperature lower connecting plate 151 and low temperature lower connecting plate 152 all offer the hole that Cooling Water passes through.In order to coordinate the different temperatures of chilled water in high temperature box 1 and low temperature box 2, high-temperature substrates 131, high temperature upper junction plate 141, high temperature lower connecting plate 151 are all made up of stainless steel or nickel-base alloy, and low temperature substrates 132, low temperature upper junction plate 142, low temperature lower connecting plate 152 are all made up of zircaloy.
It should be noted that, in the above-described embodiments, all adopt stainless steel or nickel-base alloy to illustrate that the parts contacted with high-temperature cooling water are made up of exotic material.But do not represent that the parts contacted with high-temperature cooling water can only be made up of stainless steel or nickel-base alloy, other heating resisting metal also can be used for the present invention.In the above-described embodiments, zircaloy is all adopted to illustrate that the material that the parts contacted with low-temperature cooling water are lacked by neutron-absorbing amount is made.But do not represent that the parts contacted with low-temperature cooling water can only be made up of zircaloy, material such as the beryllium alloy that other neutron-absorbing amount is low also can be used for the present invention.
As mentioned above, just the present invention can be realized preferably.
Claims (10)
1. a reactor layered fuel assembly, comprise fuel rod box, the inner space of fuel rod box forms coolant flow passages, it is characterized in that: described fuel rod box comprises the high temperature box (1) and low temperature box (2) that are interconnected, in high temperature box (1), the volume of coolant flow passages is greater than the volume of coolant flow passages in low temperature box (2), high temperature box (1) is made up of heat-resisting alloy, and low temperature box (2) is made up of zircaloy or beryllium alloy.
2. a kind of reactor layered fuel assembly according to claim 1, is characterized in that: described high temperature box (1) and low temperature box (2) are for multiple.
3. a kind of reactor layered fuel assembly according to claim 1, is characterized in that: also comprise fuel rod (3), and fuel rod (3) is arranged in described high temperature box (1) and low temperature box (2) respectively.
4. a kind of reactor layered fuel assembly according to claim 3, is characterized in that: the quantity of described high temperature box (1) internal combustion charge bar (3) is less than the quantity of described fuel rod (3) in described low temperature box (2).
5. according to a kind of reactor layered fuel assembly in claim 1 ~ 4 described in any one, it is characterized in that: also comprise the high temperature base (41) be made up of heat-resisting alloy, high temperature moderator box (51) and high temperature moderator pipe (61), also comprise the low temperature base (42) be made up of zircaloy or beryllium alloy, low temperature moderator box (52) and low temperature moderator pipe (62), high temperature moderator box (51) is arranged in described high temperature box (1), low temperature moderator box (52) is arranged in described low temperature box (2), high temperature base (41) is communicated with described high temperature box (1), low temperature base (42) is communicated with described low temperature box (2), high temperature moderator box (51) is communicated with low temperature moderator box (52), high temperature moderator pipe (61) runs through high temperature base (41), high temperature moderator pipe (61) is connected with high temperature moderator box (51), low temperature moderator pipe (62) runs through low temperature base (42), low temperature moderator pipe (62) is connected with low temperature moderator box (52), (41) offer coolant outlet to high temperature base, (42) offer cooling water inlet to low temperature base.
6. a kind of reactor layered fuel assembly according to claim 5, it is characterized in that: also comprise the connecting box (7) and connecting pipe (8) that are made up of heat-resisting alloy, described high temperature box (1) is communicated with by connecting box (7) with low temperature box (2), connecting pipe (8) is arranged in connecting box (7), and connecting pipe (8) is communicated with described high temperature moderator box (51) and low temperature moderator box (52).
7. a kind of reactor layered fuel assembly according to claim 5, is characterized in that: described coolant outlet is for being arranged at the steam window (9) of high temperature base (41) side.
8. a kind of reactor layered fuel assembly according to claim 5, it is characterized in that: also comprise the high temperature base web member (10) be made up of heat-resisting alloy, the low temperature base web member (11) be made up of zircaloy or beryllium alloy, described high temperature base (41) is communicated with described high temperature box (1) by high temperature base web member (10), and described low temperature base (42) is communicated with described low temperature box (2) by low temperature base web member (11).
9. a kind of reactor layered fuel assembly according to claim 5, it is characterized in that: comprise two described high temperature bases (41), also comprise the spreader plate (12) be made up of heat-resisting alloy, spreader plate (12) is arranged at two chambers being divided into high temperature base (41) inside in described high temperature base (41) and not communicating, described two chambers respectively high temperature box (1) described with two are communicated with, two described high temperature moderator pipes (61) run through two chambers respectively, high temperature moderator pipe (61) connects with the high temperature moderator box (51) in corresponding high temperature box (1).
10. a kind of reactor layered fuel assembly according to claim 5, it is characterized in that: comprise two described low temperature bases (42), low temperature base (42) is communicated with two described low temperature box (2), two low temperature moderator pipes (62) run through low temperature base (42), and two described low temperature moderator pipes (62) respectively low temperature moderator box (52) described with two are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310043081.9A CN103137219B (en) | 2013-02-04 | 2013-02-04 | A kind of reactor layered fuel assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310043081.9A CN103137219B (en) | 2013-02-04 | 2013-02-04 | A kind of reactor layered fuel assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103137219A CN103137219A (en) | 2013-06-05 |
| CN103137219B true CN103137219B (en) | 2015-10-28 |
Family
ID=48496922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310043081.9A Active CN103137219B (en) | 2013-02-04 | 2013-02-04 | A kind of reactor layered fuel assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103137219B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018510361A (en) * | 2015-02-11 | 2018-04-12 | キャンドゥ・エナジー・インコーポレーテッド | Nuclear fuel containing neutron absorber mixture |
| CN106448750B (en) * | 2016-11-25 | 2017-10-13 | 中国核动力研究设计院 | A kind of Embedded Double flow supercritical water reactor fuel assembly |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1047081A1 (en) * | 1999-04-23 | 2000-10-25 | Hitachi, Ltd. | Nuclear fuel assembly and nuclear reactor core |
| CN102117664A (en) * | 2010-12-24 | 2011-07-06 | 中国核动力研究设计院 | Double-row hexagonal fuel assembly for supercritical water-cooled reactor |
| JP2011169771A (en) * | 2010-02-19 | 2011-09-01 | Hitachi-Ge Nuclear Energy Ltd | Structure of reactor core in fast-breeder reactor |
| CN102354539A (en) * | 2011-09-15 | 2012-02-15 | 西安交通大学 | Annular fuel element and annular fuel supercritical water reactor |
| CN202487184U (en) * | 2012-03-02 | 2012-10-10 | 华北电力大学 | Double-layer water rod device used for improving supercritical water cooled reactor performance |
| CN102737735A (en) * | 2012-07-04 | 2012-10-17 | 中国核动力研究设计院 | Combined square fuel assembly, reactor core and two-pass flowing method of super-critical water reactor |
| WO2012150699A1 (en) * | 2011-05-02 | 2012-11-08 | 学校法人早稲田大学 | Fuel assembly, reactor core and water-cooled nuclear reactor |
-
2013
- 2013-02-04 CN CN201310043081.9A patent/CN103137219B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1047081A1 (en) * | 1999-04-23 | 2000-10-25 | Hitachi, Ltd. | Nuclear fuel assembly and nuclear reactor core |
| JP2011169771A (en) * | 2010-02-19 | 2011-09-01 | Hitachi-Ge Nuclear Energy Ltd | Structure of reactor core in fast-breeder reactor |
| CN102117664A (en) * | 2010-12-24 | 2011-07-06 | 中国核动力研究设计院 | Double-row hexagonal fuel assembly for supercritical water-cooled reactor |
| WO2012150699A1 (en) * | 2011-05-02 | 2012-11-08 | 学校法人早稲田大学 | Fuel assembly, reactor core and water-cooled nuclear reactor |
| CN102354539A (en) * | 2011-09-15 | 2012-02-15 | 西安交通大学 | Annular fuel element and annular fuel supercritical water reactor |
| CN202487184U (en) * | 2012-03-02 | 2012-10-10 | 华北电力大学 | Double-layer water rod device used for improving supercritical water cooled reactor performance |
| CN102737735A (en) * | 2012-07-04 | 2012-10-17 | 中国核动力研究设计院 | Combined square fuel assembly, reactor core and two-pass flowing method of super-critical water reactor |
Non-Patent Citations (1)
| Title |
|---|
| 改进Flower型超临界水冷快堆负空泡反应性初步分析设计;彭红花等;《南华大学学报（自然科学版）》;20111231;第25卷(第4期);13-18 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103137219A (en) | 2013-06-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Yang et al. | Design of non-uniformly distributed annular fins for a shell-and-tube thermal energy storage unit | |
| Yao et al. | Study on solidification performance of PCM by longitudinal triangular fins in a triplex-tube thermal energy storage system | |
| CN102954726B (en) | Composite phase-change heat storage device | |
| CN102737735B (en) | Supercritical water reactor combined type square fuel assembly and use the reactor core of this fuel assembly | |
| Huang et al. | Solidification performance of new trapezoidal longitudinal fins in latent heat thermal energy storage | |
| CN103629013B (en) | A kind of subsonic combustion scramjet combustor and re-generatively cooled method thereof | |
| CN108413796A (en) | A kind of temperature gradient energy storage heat exchanger | |
| CN103106929B (en) | The modified annular fuel element of supercritical water reactor and the fuel assembly of formation thereof | |
| CN201539997U (en) | High-efficiency condenser and air conditioner equipped with same | |
| CN109737784A (en) | A kind of tree rib-pore network phase-change energy storage device | |
| CN103137219B (en) | A kind of reactor layered fuel assembly | |
| CN202836293U (en) | Composite type phase change heat storage device | |
| CN102760500B (en) | A kind of surge wave pipe structure of nuclear power station voltage stabilizer | |
| CN205088180U (en) | Coke oven crude gas tedge heat transfer device | |
| CN103594124A (en) | Control rod guide tube and fuel assembly | |
| CN105976874B (en) | A kind of subregion tritium purge system adapted to for fusion reactor solid blanket | |
| Zheng et al. | Experimental study on thermal performance of phase change heat storage device with rectangular shell structure | |
| CN108298097A (en) | A kind of small scale enhanced heat exchange structure | |
| CN103106930B (en) | Supercritical-Pressure Light Water Cooled Reactor fuel assembly | |
| CN206233984U (en) | Water flow management device of natural gas engine heat exchanger | |
| CN105273728A (en) | Raw gas riser pipe heat exchange device for coking furnace | |
| CN203055472U (en) | Supercritical water cooled reactor flow adjustment structure and fuel component | |
| CN209623131U (en) | A kind of cisten mechanism of the external septate heat transfer of liner | |
| CN105066758A (en) | High-temperature heat storage system | |
| CN116246807A (en) | Lead-cooling natural circulation heat transfer universal experiment bench and experiment method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |