CN208570133U - MNSR Reactor neutron therapy device and medical system - Google Patents

Abstract

The utility model discloses a kind of MNSR Reactor neutron therapy device and medical systems, it is related to the field of medical instrument technology, it can not be treated with to solve the existing miniature nuclear reactor for neutron radiating device in hospital and only have the technical issues of duct for irradiation treatment deep tumor positioned at the tumour of deep layer or a seat minitype nuclear reactor.MNSR Reactor neutron therapy device described in the utility model, comprising: for generating the neutron streaming MNSR Reactor of high epithermal neutron flux comprising: reactor center, and surround the fuel slab area that its surrounding is set, bottom beryllium reflector and top beryllium reflector；By forming by the fuel rod of triangular lattice or the arrangement of equidistant concentric circumferences, fuel rod is made of zirconium cladding and the uranium dioxide core containing slightly enriched uranium for reactor center；Fuel slab area is made of the multiple fuel slabs containing slightly enriched uranium arranged by regular polygon, and forms closed or open ring structure.

Description

MNSR Reactor neutron therapy device and medical system

Technical field

The utility model relates to the field of medical instrument technology, in particular to a kind of MNSR Reactor neutron therapy device and medical department System.

Background technique

Existing neutron radiation therapy system be generated using proton precessional magnetometer irradiation target piece neutron as neutron source or Using nuclear reactor as neutron source.From the center that neutron source projects, alignment patient's lesions position carries out radiotherapy.This germline The defect of system are as follows: accelerator is usually linear accelerator, and occupied area is excessive, and only one outlet of accelerator, can only be corresponded to In an inspection chamber or therapeutic room.

To solve drawbacks described above, in the prior art, have using miniature nuclear reactor as neutron source, there are two irradiation for tool Duct, can be with the tumour of radiation treatment human body surface and shallow-layer, but the neutron flux of epithermal neutron is lower, can not treat and be located at The tumour of deep layer；There are also be located at reactor core bottom the epithermal neutron beam with higher flux, tool there are three exposure hole, The exposure hole of reactor core bottom epithermal neutron flux with higher can treat tumour of the depth to 7cm, however epithermal neutron The raising of flux has had reached the limit, can not further increase, and uses such arrangement, and a seat minitype nuclear reactor only has one A duct for irradiation treatment deep tumor.

Therefore, how a kind of MNSR Reactor neutron therapy device can be improved horizontal neutron beam irradiation flux, miniature is provided The method of heap medical system and neutron beam of improving the standard irradiation flux, it has also become the skill of those skilled in the art's urgent need to resolve Art problem.

Utility model content

One of the utility model is designed to provide a kind of MNSR Reactor neutron therapy device, MNSR Reactor medical system, with Tumour or a seat minitype core positioned at deep layer can not be treated by solving the existing miniature nuclear reactor for neutron radiating device in hospital Reactor only has the technical issues of duct for irradiation treatment deep tumor.

The utility model provides a kind of MNSR Reactor neutron therapy device, comprising: neutron streaming MNSR Reactor, the neutron streaming MNSR Reactor is for generating high epithermal neutron flux；The neutron streaming MNSR Reactor includes: reactor center, and surrounds setting The fuel slab area of surrounding, bottom beryllium reflector and top beryllium reflector in the reactor center；The reactor center By forming by the fuel rod of triangular lattice or the arrangement of equidistant concentric circumferences, the fuel rod is by zirconium cladding and contains slightly enriched uranium Uranium dioxide core is constituted；The fuel slab area is made of the multiple fuel slabs containing slightly enriched uranium arranged by regular polygon, and Form closed or open ring structure.

When practical application, the degree of enrichment of the slightly enriched uranium is less than 20%.

Wherein, the core of the fuel slab includes U-Al alloy or uranium zircaloy or uranium dioxide ceramics.

Alternatively, the core of the fuel rod includes uranium dioxide ceramics.

Specifically, the involucrum of the fuel rod includes zircaloy.

Alternatively, the involucrum of the fuel slab includes aluminium alloy or zircaloy.

Further, multiple fuel slabs in the fuel slab area are along the circumferencial direction of the reactor center at closing Ring setting；Multiple fuel slabs include 6 to 16.

Further, the MNSR Reactor neutron therapy device further include: aluminum cylinder, the reactor center and described Fuel slab area is arranged at the inside of the aluminum cylinder, full of deionized water as described anti-in the intracorporal gap of the aluminum barrel Answer the coolant and moderator of heap.

Compared with the existing technology, MNSR Reactor neutron therapy device described in the utility model has the advantage that

In MNSR Reactor neutron therapy device provided by the utility model, comprising: neutron streaming MNSR Reactor, the neutron streaming are micro- Type heap is for generating high epithermal neutron flux；Wherein, neutron streaming MNSR Reactor includes: reactor center, and surrounds setting The fuel slab area of surrounding, bottom beryllium reflector and top beryllium reflector in reactor center；Specifically, reactor center by The fuel rod composition of triangular lattice or the arrangement of equidistant concentric circumferences is pressed, fuel rod is by zirconium cladding and contains the titanium dioxide of slightly enriched uranium Uranium core is constituted；Further, fuel slab area is made of the multiple fuel slabs containing slightly enriched uranium arranged by regular polygon, and shape At closed or open ring structure.From this analysis, in MNSR Reactor neutron therapy device provided by the utility model, due to The antineutron trap of reactor core arranges that the fuel slab of reactor core periphery generates the neutron flux higher than reactor core, namely takes full advantage of in anti- Sub- trap generates the neutron streaming of the high epithermal neutron flux for radiation treatment, thus in the condition for not improving core power Under, the epithermal neutron flux in irradiation channel can be effectively improved, and then effectively solve existing for neutron radiating device in hospital Miniature nuclear reactor can not treat positioned at the tumour of deep layer or a seat minitype nuclear reactor only have one for irradiation treatment depth The technical issues of duct of layer tumour.

The utility model also provides a kind of MNSR Reactor medical system, comprising: miniature pile neutron as described in any one of the above embodiments Therapeutic device.

The MNSR Reactor medical system and above-mentioned MNSR Reactor neutron therapy device compared with the existing technology possessed by advantage Identical, details are not described herein.

Another a kind of method for being designed to provide neutron beam irradiation flux of improving the standard of the utility model, to solve The existing miniature nuclear reactor for neutron radiating device in hospital can not treat the tumour or a seat minitype nuclear reaction positioned at deep layer Heap only has the technical issues of duct for irradiation treatment deep tumor.

The utility model provides a kind of horizontal neutron beam illuminating method, includes the following steps: to cancel side beryllium ring, and reacting The outside of heap center is with regular polygon around the multiple fuel slabs of arrangement.

Compared with the existing technology, horizontal neutron beam illuminating method described in the utility model has the advantage that

In horizontal neutron beam illuminating method provided by the utility model, include the following steps: to cancel side beryllium ring, and reacting The outside of heap center is with regular polygon around the multiple fuel slabs of arrangement.From this analysis, level provided by the utility model In neutron beam illuminating method, since the antineutron trap of reactor core is arranged, it is logical that the fuel slab of reactor core periphery generates the neutron higher than reactor core Amount, namely antineutron trap is taken full advantage of to generate the neutron streaming of the high epithermal neutron flux for radiation treatment, thus Under conditions of not improving core power, the epithermal neutron flux in irradiation channel can be effectively improved, and then is effectively solved existing Miniature nuclear reactor of some for neutron radiating device in hospital can not treat tumour or a seat minitype nuclear reactor positioned at deep layer Only one be used for irradiation treatment deep tumor duct the technical issues of.

Detailed description of the invention

The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.? In attached drawing:

Fig. 1 is a kind of structural schematic diagram of MNSR Reactor neutron therapy device provided by the embodiment of the utility model；

Fig. 2 is the structural schematic diagram of another MNSR Reactor neutron therapy device provided by the embodiment of the utility model；

Fig. 3 is a kind of flow diagram of horizontal neutron beam illuminating method provided by the embodiment of the utility model；

Fig. 4 is the structural schematic diagram of another MNSR Reactor neutron therapy device provided by the embodiment of the utility model；

Fig. 5 is the structural schematic diagram of another MNSR Reactor neutron therapy device provided by the embodiment of the utility model；

Fig. 6 is the flow diagram of the horizontal neutron beam illuminating method of another kind provided by the embodiment of the utility model.

In figure: 1- reactor center；The side 2- beryllium reflector；3- fuel slab；The plane that 21- is uniformly thinned；4- water Gap；5- aluminum cylinder；30- fuel slab area.

Specific embodiment

It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can To be combined with each other.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

Fig. 1 is a kind of structural schematic diagram of MNSR Reactor neutron therapy device provided by the embodiment of the utility model.

As shown in Figure 1, the utility model embodiment provides a kind of MNSR Reactor neutron therapy device, comprising: neutron streaming is micro- Type heap, neutron streaming MNSR Reactor is for generating high epithermal neutron flux；Neutron streaming MNSR Reactor includes: reactor center 1, with And the side beryllium reflector 2 and fuel slab 3 that 1 surrounding of reactor center is set, bottom beryllium reflector are successively surrounded from the inside to the outside With top beryllium reflector；Reactor center 1 by the fuel rod of triangular lattice or the arrangement of equidistant concentric circumferences by being formed, fuel Stick is made of zirconium cladding and the uranium dioxide core containing slightly enriched uranium；The outside of the side beryllium ring of side beryllium reflector 2 has multiple equal Even thinned plane 21 uniformly arranges the fuel slab 3 containing slightly enriched uranium on the outside of thinned plane 21, and uniformly thinned plane 21 Water gap 4 is equipped between fuel slab 3.

Compared with the existing technology, MNSR Reactor neutron therapy device described in the utility model embodiment has the advantage that

In MNSR Reactor neutron therapy device provided by the embodiment of the utility model, as shown in Figure 1, comprising: neutron streaming is micro- Type heap, the neutron streaming MNSR Reactor is for generating high epithermal neutron flux；Wherein, neutron streaming MNSR Reactor includes: in reactor Heart district 1, and the side beryllium reflector 2 and fuel slab 3 that 1 surrounding of reactor center is set, bottom are successively surrounded from the inside to the outside Beryllium reflector and top beryllium reflector；Specifically, reactor center 1 by press triangular lattice or equidistant concentric circumferences arrangement Fuel rod composition, fuel rod are made of zirconium cladding and the uranium dioxide core containing slightly enriched uranium；Further, side beryllium reflector 2 The outside of side beryllium ring there are multiple uniformly thinned planes 21, uniformly arrange the combustion containing slightly enriched uranium on the outside of thinned plane 21 Flitch 3, and water gap 4 is equipped between uniformly thinned plane 21 and fuel slab 3.From this analysis, the utility model embodiment In the MNSR Reactor neutron therapy device of offer, since the antineutron trap of reactor core is arranged, reactor core is compared in the fuel slab generation of reactor core periphery High neutron flux, namely antineutron trap is taken full advantage of to generate the neutron of the high epithermal neutron flux for radiation treatment Line, so that the epithermal neutron flux in irradiation channel, Jin Eryou can be effectively improved under conditions of not improving core power Effect, which solves the existing miniature nuclear reactor for neutron radiating device in hospital, can not treat tumour or a seat minitype positioned at deep layer Nuclear reactor only has the technical issues of duct for irradiation treatment deep tumor.

When practical application, the degree of enrichment of above-mentioned slightly enriched uranium is less than 20%.Namely fuel rod by zirconium cladding and contains degree of enrichment The uranium dioxide core of slightly enriched uranium less than 20% is constituted；Also, uniformly arrangement is small containing degree of enrichment on the outside of thinned plane 21 In the fuel slab 3 of 20% slightly enriched uranium.

Wherein, the core of above-mentioned fuel slab 3 may include U-Al alloy；Or, the core of fuel slab 3 may include that uranium zirconium closes Gold；Or the core of fuel slab 3 may include uranium dioxide ceramics.

Specifically, the core of above-mentioned fuel rod includes uranium dioxide ceramics；The involucrum of fuel rod may include zircaloy.

Specifically, the involucrum of above-mentioned fuel slab 3 may include aluminium alloy or zircaloy.

Further, for reasonable layout, as shown in Figure 1, further, for reasonable layout, as shown in Figure 1, above-mentioned Circumferencial direction of multiple fuel slabs 3 along reactor center 1 is uniformly distributed, and the multiple fuel slab 3 may include having four to eight It is a, preferably four.

In addition, multiple fuel slabs 3 of closed ring set can be gap distribution, or non-gap tight distribution.

Fig. 2 is the structural schematic diagram of another MNSR Reactor neutron therapy device provided by the embodiment of the utility model.

Further, as shown in Fig. 2, MNSR Reactor neutron therapy device provided by the embodiment of the utility model can also wrap Include: aluminum cylinder 5, reactor center 1, side beryllium reflector 2 and fuel slab 3 are arranged at the inside of the aluminum cylinder 5, at this Coolant and moderator of the deionized water as the reactor are full of in the gap of the inside of aluminum cylinder 5.

The utility model embodiment also provides a kind of MNSR Reactor medical system, comprising: as described in any one of the above embodiments miniature Pile neutron therapeutic device.

Fig. 3 is the flow diagram of horizontal neutron beam illuminating method provided by the embodiment of the utility model.

The utility model embodiment provides a kind of horizontal neutron beam illuminating method again, as shown in connection with fig. 3 such as Fig. 1, including such as Lower step: plane step S1, is thinned into the outside of the side beryllium ring of side beryllium reflector 2；Step S2, in thinned planar outboard cloth Set fuel slab 3.

Compared with the existing technology, horizontal neutron beam illuminating method described in the utility model embodiment has the advantage that

As shown in connection with fig. 3 such as Fig. 1, in horizontal neutron beam illuminating method provided by the embodiment of the utility model, including it is as follows Step: plane step S1, is thinned into the outside of the side beryllium ring of side beryllium reflector 2；Step S2, it is arranged in thinned planar outboard Fuel slab 3.It is anti-due to reactor core from this analysis, in horizontal neutron beam illuminating method provided by the embodiment of the utility model The fuel slab of neutron sink arrangement, reactor core periphery generates the neutron flux higher than reactor core, namely takes full advantage of antineutron trap to produce The neutron streaming of the raw high epithermal neutron flux for radiation treatment, thus under conditions of not improving core power, it can The epithermal neutron flux in irradiation channel is effectively improved, and then effectively solves the existing Micro Core for neutron radiating device in hospital Reactor, which can not be treated, only has one for irradiation treatment deep tumor positioned at the tumour of deep layer or a seat minitype nuclear reactor The technical issues of duct.

Fig. 4 is the structural schematic diagram of another MNSR Reactor neutron therapy device provided by the embodiment of the utility model.

As shown in figure 4, the utility model embodiment provides a kind of MNSR Reactor neutron therapy device again, comprising: neutron streaming MNSR Reactor, neutron streaming MNSR Reactor is for generating high epithermal neutron flux；Neutron streaming MNSR Reactor includes: reactor center 1, And surround the fuel slab area 30 that 1 surrounding of reactor center is set, bottom beryllium reflector and top beryllium reflector；Reactor Center 1 by the fuel rod of triangular lattice or the arrangement of equidistant concentric circumferences by being formed, and fuel rod is by zirconium cladding and containing low dense The uranium dioxide core of uranium is constituted；Fuel slab area 30 is made of the multiple fuel slabs 3 containing slightly enriched uranium arranged by regular polygon, And form closed or open ring structure.

Compared with the existing technology, MNSR Reactor neutron therapy device described in the utility model embodiment has the advantage that

In MNSR Reactor neutron therapy device provided by the embodiment of the utility model, as shown in Figure 4, comprising: neutron streaming is micro- Type heap, the neutron streaming MNSR Reactor is for generating high epithermal neutron flux；Wherein, neutron streaming MNSR Reactor includes: in reactor Heart district 1, and surround the fuel slab area 30 that 1 surrounding of reactor center is set, bottom beryllium reflector and top beryllium reflector； Specifically, reactor center 1 by the fuel rod of triangular lattice or the arrangement of equidistant concentric circumferences by being formed, and fuel rod is by zirconium packet Shell and uranium dioxide core containing slightly enriched uranium are constituted；Further, fuel slab area 30 multiple is contained by what is arranged by regular polygon There is the fuel slab 3 of slightly enriched uranium to constitute, and forms closed or open ring structure.From this analysis, the utility model is implemented In the MNSR Reactor neutron therapy device that example provides, since the antineutron trap of reactor core is arranged, heap is compared in the fuel slab generation of reactor core periphery The high neutron flux of core, namely antineutron trap is taken full advantage of to generate in the high epithermal neutron flux for radiation treatment Beamlet stream, so that under conditions of not improving core power the epithermal neutron flux in irradiation channel can be effectively improved, in turn Effectively solve the existing miniature nuclear reactor for neutron radiating device in hospital can not treat it is micro- positioned at the tumour of deep layer or one Type nuclear reactor only has the technical issues of duct for irradiation treatment deep tumor.

When practical application, the degree of enrichment of above-mentioned slightly enriched uranium is less than 20%.Namely fuel rod by zirconium cladding and contains degree of enrichment The uranium dioxide core of slightly enriched uranium less than 20% is constituted；Also, fuel slab area 30 by it is multiple containing degree of enrichment less than 20% The fuel slab 3 of slightly enriched uranium is constituted.

Wherein, the core of above-mentioned fuel slab 3 may include U-Al alloy；Or, the core of above-mentioned fuel slab 3 may include uranium The core of zircaloy or fuel slab 3 may include uranium dioxide ceramics.

Specifically, the core of above-mentioned fuel rod may include uranium dioxide ceramics；The involucrum of fuel rod may include that zirconium closes Gold.

Specifically, the involucrum of fuel slab 3 may include aluminium alloy or zircaloy.

Further, for reasonable layout, as shown in figure 4, multiple fuel slabs 3 in above-mentioned fuel slab area 30 may include having Eight, and eight fuel slabs 3 along reactor center 1 circumferencial direction at closed ring set.

Fig. 5 is the structural schematic diagram of another MNSR Reactor neutron therapy device provided by the embodiment of the utility model.

Further, as shown in figure 5, MNSR Reactor neutron therapy device provided by the embodiment of the utility model can also wrap Include: aluminum cylinder 5, reactor center 1 and fuel slab area 30 are arranged at the inside of the aluminum cylinder 5, inside the aluminum cylinder 5 Gap in be full of deionized water, coolant and moderator as the reactor.

The utility model embodiment also provides a kind of MNSR Reactor medical system, comprising: as described in any one of the above embodiments miniature Pile neutron therapeutic device.

Fig. 6 is the flow diagram of the horizontal neutron beam illuminating method of another kind provided by the embodiment of the utility model.

The utility model embodiment provides a kind of horizontal neutron beam illuminating method again, as shown in connection with fig. 6 such as Fig. 4, including such as Lower step: step S10, cancel side beryllium ring, and surround in the outside of reactor center 1 with regular polygon and arrange multiple fuel slabs 3。

Compared with the existing technology, horizontal neutron beam illuminating method described in the utility model embodiment has the advantage that

As shown in connection with fig. 6 such as Fig. 4, in horizontal neutron beam illuminating method provided by the embodiment of the utility model, including it is as follows Step: step S10, cancel side beryllium ring, and surround in the outside of reactor center 1 with regular polygon and arrange multiple fuel slabs 3. From this analysis, in horizontal neutron beam illuminating method provided by the embodiment of the utility model, due to the antineutron trap cloth of reactor core It sets, the fuel slab of reactor core periphery generates the neutron flux higher than reactor core, namely takes full advantage of antineutron trap to generate for spoke According to the neutron streaming of the high epithermal neutron flux for the treatment of, to can be effectively improved under conditions of not improving core power Epithermal neutron flux in irradiation channel, so effectively solve the existing miniature nuclear reactor for neutron radiating device in hospital without Method treatment is located at the tumour of deep layer or a seat minitype nuclear reactor only has the skill for being used for the duct of irradiation treatment deep tumor Art problem.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims (8)

1. a kind of MNSR Reactor neutron therapy device characterized by comprising neutron streaming MNSR Reactor, the neutron streaming are miniature Heap is for generating high epithermal neutron flux；The neutron streaming MNSR Reactor includes: reactor center, and surrounds and be arranged in institute State the fuel slab area of reactor center surrounding, bottom beryllium reflector and top beryllium reflector；

The reactor center by by triangular lattice or equidistant concentric circumferences arrangement fuel rod form, the fuel rod by Zirconium cladding and uranium dioxide core are constituted；

The fuel slab area is made of the multiple fuel slabs arranged by regular polygon, and forms closed or open ring structure.

2. MNSR Reactor neutron therapy device according to claim 1, which is characterized in that the core of the fuel slab includes uranium Perhaps uranium zircaloy or uranium dioxide are ceramic for aluminium alloy.

3. MNSR Reactor neutron therapy device according to claim 1, which is characterized in that the core of the fuel rod includes two Uranium oxide ceramics.

4. MNSR Reactor neutron therapy device according to claim 1, which is characterized in that the involucrum of the fuel rod includes zirconium Alloy.

5. MNSR Reactor neutron therapy device according to claim 1, which is characterized in that the involucrum of the fuel slab includes aluminium Alloy or zircaloy.

6. MNSR Reactor neutron therapy device according to claim 1, which is characterized in that the fuel slab area it is multiple described Fuel slab along the reactor center circumferencial direction at closed ring set；Multiple fuel slabs include 6 to 16.

7. MNSR Reactor neutron therapy device according to claim 1 or 6, which is characterized in that further include: aluminum cylinder, it is described Reactor center and the fuel slab area are arranged at the inside of the aluminum cylinder, are full of in the intracorporal gap of the aluminum barrel Coolant and moderator of the deionized water as the reactor.

8. a kind of MNSR Reactor medical system characterized by comprising such as above-mentioned of any of claims 1-7 miniature Pile neutron therapeutic device.