CN103578596B - X ray conversion target - Google Patents
X ray conversion target Download PDFInfo
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- CN103578596B CN103578596B CN201310521465.7A CN201310521465A CN103578596B CN 103578596 B CN103578596 B CN 103578596B CN 201310521465 A CN201310521465 A CN 201310521465A CN 103578596 B CN103578596 B CN 103578596B
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Abstract
The invention discloses a kind of X ray conversion target, it comprises a matrix and a target layer plate, and this matrix comprises that a substrate and is fixedly arranged on the framework on this substrate perisporium, detachable this framework that is connected with of this target layer plate; On this substrate, be fixedly arranged on the affixed guide plate at least one and one end this framework, those guide plates all between this substrate and this target layer plate, and with this substrate, this framework and this target layer plate around being formed with a coolant layer; This coolant layer comprise at least one influent stream road and at least one go out runner, respectively the one end in this influent stream road is used for passing into cooling agent, the other end is with respectively this goes out runner and is connected, respectively this one end that goes out runner is for flowing out cooling agent. The present invention ensure high-power or super high power electron beam convert to the conversion efficiency of X ray high in, realize the temperature stability of conversion target, avoid thermal stress and thermal deformation, improved the service life of conversion target.
Description
Technical field
The present invention relates to a kind of X ray conversion target.
Background technology
Come from the advantage of X ray in penetrability, irradiation industry turns X ray to electron beam and has proposed to compelBe essential and want. If can convert powerful 5～10MeV electron beam to X ray, its penetration capacity and addingWork ability can be compared with Co-60 γ irradiation bomb. Make so existing accelerator irradiation device be suitable forFace is wider, and strengthens the flexibility of its operation, can also directly substitute a part of Co-60 irradiation devices.
But converting beam energy in the process of X ray to, electron beam converts the share of X ray energy toBe fewer, more than 80%～90% energy all discharges the form with hot. For ensureing conversion efficiency,The gauge of conversion target is all smaller conventionally, and the scanning plane of electron beam has a fixed limit conventionallySystem. Therefore,, in order to solve the heat dissipation problem of high-power X ray conversion in certain volume, need realityThe heat exchange efficiently under target body limited bulk and thickness of existing cooling agent.
In Chinese invention patent application description CN201310091694.X, disclose a kind of high-powerIrradiation accelerator X ray conversion target, as shown in Figures 1 to 3, this X ray conversion target it comprise target body andTarget body cooling device, described target body comprise tantalum plate 3 ' and copper coin 4 ', described tantalum plate 3 ' front surface is used forAccept electronic beam current and be converted to X ray, tantalum plate 3 ' rear surface and copper coin 4 ' front surface are welded as oneBody; Described target body cooling device comprise two main cooling tubes 1 ' and many cooling tubes 2 ', describedMany cooling tubes 2 ' be arranged in parallel, are welded on described copper coin 4 ' rear surface two described mastersMany cooling tubes 2 of cooling tube 1 ' be welded on respectively ' two ends and with a cooling tube 2 ' be connected, itsIn one main cooling tube 1 ' for passing into cooling fluid, another root is used for exporting cooling fluid. But this is largeThere is following technical problem in power irradiation accelerator X ray conversion target:
(1) many cooling tubes are disposed on the rear surface of copper coin, make the same transversal of this copper coinIn uneven thickness on face, causes thicker position to absorb more X ray, makes conversion target frontLose to the share that produces X ray in direction, conversion efficiency reduces;
(2) position that this target cross section mass thickness is thinner will transmit electron beam, and X is penetratedLine is in irradiation process, and electron beam produces interference effect to X ray, affects the quality of irradiation products;
(3) type of cooling of this X ray conversion target adopts unidirectional runner, causes entering at cooling agentWith flow out the inhomogeneous of two ends temperature, the harmful effect that produces thermal stress and thermal deformation;
(4) this structure can not realize directly cooling to converting member of cooling agent, between need throughCooling tube wall, cooling tube and copper coin contact-making surface etc., will be not enough to some extent on exchange capability of heat.
Summary of the invention
The technical problem to be solved in the present invention be overcome in prior art X ray conversion target conversion efficiency low,Electron beam produces the defect of interfering, easily produce thermal stress and thermal deformation to X ray, a kind of X is providedRay conversion target.
The present invention solves above-mentioned technical problem by following technical proposals:
A kind of X ray conversion target, comprises a matrix and a target layer plate, and its feature is, this matrix comprisesOne substrate and one is fixedly arranged on the framework on this substrate perisporium, detachable this framework that is connected with of this target layer plate;
On this substrate, be fixedly arranged at least one guide plate affixed with one end this framework, the equal position of those guide platesBetween this substrate and this target layer plate, and cold around being formed with one with this substrate, this framework and this target layer plateBut agent layer;
This coolant layer comprise at least one influent stream road and at least one go out runner, respectively the one end in this influent stream road is used forPass into cooling agent, the other end is with respectively this goes out runner and is connected, and respectively this one end that goes out runner is cooling for flowing outAgent.
In this programme, in the time of electron beam and target slab effect, convert X ray to. Wherein, target layerPlate produces X ray, also absorption of x-rays of while. Coolant layer is arranged between substrate and target layer plate,Make the even thickness of the same cross section of this substrate, can ensure at high-power or super high power conversionEfficiency requires under higher occasion, and coolant layer and substrate are by complete through the electron beam of target layer plate transmissionAbsorb, wherein remaining most beam energy will be deposited in substrate, avoid electron beam from substrateTransmit, the irradiation of X ray is produced and interfered, affect the quality of irradiation products; In addition, this cooling agentLayer comprises influent stream road and goes out runner, adopts this reciprocal fluidal texture, not only that conversion target is long-pending in the time workingTired heat is taken away in time, also can realize the temperature stability of conversion target, avoids thermal stress and thermal deformation,Improve conversion target service life.
Preferably, between this target layer plate and this framework for screw is connected, this target layer plate by a sealing ring withThis frame seal connects.
In this programme, adopt said structure form, be convenient to this conversion target dismounting, fixing, can protect simultaneouslyDemonstrate,prove the sealing of this conversion target, avoid the cooling agent that passes into coolant layer to overflow from the side of this matrix.
Preferably, this X ray conversion target also comprises a sealing flanging assembly, sealing flanging assembly and thisTarget layer plate, framework are affixed, and are positioned at the top of this target layer plate.
In this programme, the arranging of sealing flanging assembly can further ensure tight between target layer plate and matrixSolidity and sealing.
Preferably, the quantity of this guide plate is two, and two these guide plates are set in parallel on this substrate.
Preferably, the quantity in this influent stream road is one, and this quantity that goes out runner is two, this position, influent stream roadIn two this go out between runner.
In this programme, this influent stream road goes out between runner at two, makes the target of cooling agent at conversion targetFlowing for reciprocating in body, is conducive to ensure the uniformity of the Temperature Distribution in conversion target.
Preferably, a sidewall of this framework is provided with three through holes, and respectively one end of this through hole is respectively by oneAdapter assembly is connected with an ooling channel, and the other end of one of them this through hole is connected with this influent stream roadLogical, the other end of two other this through hole respectively with one this go out runner and be connected.
Preferably, one end of this substrate is provided with three link slots, and respectively one end of this link slot respectively should with oneThrough hole is connected, and the other end of one of them this link slot is connected with this influent stream road, two other this connectThe other end of access slot respectively with one this go out runner and be connected.
Preferably, this target layer plate be shaped as circular arc.
In this programme, this target layer plate be shaped as circular arc, the i.e. end face of target layer plate and the shape of bottom surfaceBe circular arc, pressure coolant is pointed to exterior normal direction to wall pressure, by tangential equalization of strain.Make like this pressure of cooling agent cause deformation quantity little to target at thickness direction (radially), therefore, shouldBetween target layer plate and matrix, being used for resisting pressure coolant without the extra fixed structure of increase brings itDeformation.
Preferably, respectively on this influent stream road and respectively, this goes out on runner to be equipped with one group of bar groove, and each organizes thisGroove comprises several grooves, and several these grooves arrange along this substrate length direction spaced and parallel.
In this programme, adopt said structure form, can strengthen the exchange capability of heat of cooling agent and matrix.
Preferably, respectively this groove be shaped as herringbone.
Meeting on the basis of this area general knowledge, above-mentioned each optimum condition, can be combined, i.e. get Ben FaBright each preferred embodiments.
Positive progressive effect of the present invention is:
X ray conversion target of the present invention is ensureing that high-power or super high power electron beam converts X ray toWhen conversion efficiency is high, realize the temperature stability of conversion target, avoid thermal stress and thermal deformation, improveThe service life of conversion target; In addition, avoid electron beam to transmit from substrate, X ray has been producedInterfere, affect the quality of irradiation products.
Brief description of the drawings
Fig. 1 is the structural representation of the X ray conversion target of prior art.
Fig. 2 is the top view corresponding with Fig. 1.
Fig. 3 is the enlarged drawing of A part in Fig. 2.
Fig. 4 is the structural representation of the preferred embodiment of X ray conversion target of the present invention.
Fig. 5 is the blast structural representation corresponding with Fig. 4.
Fig. 6 is the top view of matrix in Fig. 5.
Fig. 7 is the full sectional view of the front view corresponding with Fig. 4.
Description of reference numerals:
Prior art:
Main cooling tube: a 1 ' cooling tube: 2 ' tantalum plate: 3 '
Copper coin: 4 '
The present invention:
Matrix: 1 target layer plate: 2 sealing flanging assemblies: 3
Screw: 4 sealing rings: 5 through holes: 6
Adapter assembly: 7 influent stream roads: 8 go out runner: 9
Guide plate: 10 frameworks: 11 link slots: 12
Substrate: 13
Detailed description of the invention
Lift a preferred embodiment below, and carry out by reference to the accompanying drawings the clearer the present invention that intactly illustrates.
As shown in Figures 4 and 5, X ray conversion target of the present invention comprises a matrix 1 and a target layer plate 2. This baseBody 1 comprises that a substrate 13 and is fixedly arranged on the framework 11 on these substrate 13 perisporiums.
Wherein, detachable this framework 11 that is connected with of this target layer plate 2, and this target layer plate 2 is by a sealingCircle 5 is tightly connected with framework 11. In the present embodiment, between this target layer plate 2 and this framework 11, be spiral shellNail connects. Adopt said structure form to be convenient to this conversion target dismounting, fixing, can ensure this conversion target simultaneouslySealing, avoid the cooling agent that passes into coolant layer to overflow from the side of this matrix 1.
In addition, as shown in Figure 7, this X ray conversion target also comprises a sealing flanging assembly 3. SealingFlanging assembly 3 is affixed by some screws 4 and this target layer plate 2, framework 11, and is positioned at this target layer plate 2Top. Can further ensure like this tightness and the sealing between target layer plate 2 and matrix 1.
In addition, as shown in Figure 6, on this substrate 13, be fixedly arranged at least one affixed with one end this frameworkGuide plate 10. Those guide plates 10 all between this substrate 13 and this target layer plate 2, and with this substrate13, this framework 11 and this target layer plate 2 are around being formed with a coolant layer.
Wherein, this coolant layer comprise at least one influent stream road 8 and at least one go out runner 9. This influent stream road 8One end be used for passing into cooling agent, the other end is with respectively this goes out runner and is connected, by the heat in conversion target andIn time, is taken away.
Meanwhile, respectively the target of cooling agent at conversion target, for flowing out cooling agent, realized in this one end that goes out runner 9Circulation in body, the uniformity of temperature in guarantee conversion target.
In the present embodiment, do the used time when electron beam and target layer plate 2, convert X ray to. Wherein,Target layer plate 2 produces X ray, also absorption of x-rays of while. Coolant layer is arranged on substrate 13 and target layerBetween plate 2, make the even thickness of the same cross section of this substrate 13, can ensure high-power orSuper high power requires under higher occasion conversion efficiency, and coolant layer and substrate 13 will be through target layersThe electron beam of plate 2 transmissions absorbs completely, and wherein remaining most beam energy will be deposited on substrate 13In, avoid electron beam to transmit from substrate 13, the irradiation of X ray is produced and interfered, affect irradiationThe quality of product.
In addition, in the whole process of electron beam and conversion target, more than 80% energy will be deposited on target layerIn plate 2 and matrix 1, discharge with hot form, need in time cooling to ensure normal working temperature. At thisIn embodiment, this coolant layer comprises influent stream road 8 and goes out runner 9, adopts this reciprocal fluidal texture,Not only the heat of conversion target accumulation in the time working is taken away in time, also can be realized the temperature stabilization of conversion targetProperty, avoids thermal stress and thermal deformation, has improved conversion target service life.
Preferably, as shown in Figure 6, the quantity of this guide plate 10 is two, and two these guide plates 10 are flatRow is arranged on this substrate 13. Meanwhile, the quantity in this influent stream road 8 is one, and this goes out the number of runner 9Amount is two, this influent stream road 8 two this go out between runner 9.
In the present embodiment, this influent stream road 8 goes out between runner 9 at two, makes cooling agent in conversionFlowing for reciprocating in the target body of target, is conducive to ensure the uniformity of the Temperature Distribution in conversion target.
In addition, as shown in Figure 5, a sidewall of this framework 11 is provided with three through holes 6. Respectively this through hole 6One end be connected with an ooling channel by an adapter assembly 7 respectively. One of them this through hole 6The other end is connected with this influent stream road 8, the other end of two other this through hole 6 respectively with one this go out runner9 are connected.
In addition,, as shown in Fig. 5～6, one end of this substrate 13 is provided with three link slots 12. Respectively this connectionOne end of groove 12 is connected with this through hole 6 respectively. The other end of one of them this link slot 12 and thisInfluent stream road 8 is connected, the other end of two other this link slot 12 respectively with one this go out runner 9 and be connectedLogical.
Preferably, as shown in Figure 5, this target layer plate 2 be shaped as circular arc.
In this enforcement, this target layer plate 2 be shaped as circular arc, i.e. the end face of target layer plate 2 and bottom surfaceShape is circular arc, and pressure coolant is pointed to exterior normal direction to wall pressure, flat by tangential tension forceWeighing apparatus. Make like this pressure of cooling agent cause deformation quantity little to target at thickness direction (radially), therefore,Between this target layer plate 2 and matrix 1, be used for resisting pressure coolant to it without increasing extra fixed structureThe deformation bringing.
In actual application process, the material of target layer plate 2 is the effect of existing generation X ray on the one hand,Also have the effect of absorption of x-rays, target layer plate 2 adopts tantalum material simultaneously, and thickness is 1mm, Neng GoubaoThe share of demonstrate,proving the X ray that under certain energy, electron beam produces is maximum.
Further, respectively on this influent stream road 8 and respectively this goes out on runner 9, to be equipped with one group of bar groove. Each groupThis groove comprises several grooves, and several these grooves are flat along these substrate 13 length direction intervalsRow arranges. Can strengthen like this exchange capability of heat of cooling agent and matrix 1. In addition, in the present embodiment,Respectively this groove be shaped as herringbone.
In sum, X ray conversion target of the present invention is ensureing that high-power or super high power electron beam converts toWhen the conversion efficiency of X ray is high, realize the temperature stability of conversion target, avoid thermal stress and hot shapeBecome the service life of having improved conversion target; In addition, avoid electron beam to transmit from substrate 13,X ray is produced and interfered, affect the quality of irradiation products.
Although more than described the specific embodiment of the present invention, those skilled in the art should manageSeparate, this only illustrates, and protection scope of the present invention is limited by appended claims. AbilityThe technical staff in territory is not deviating under the prerequisite of principle of the present invention and essence, can be to these embodimentsMake various changes or modifications, but these changes and amendment all fall into protection scope of the present invention.
Claims (9)
1. an X ray conversion target, comprises a matrix and a target layer plate, it is characterized in that this matrixComprise that a substrate and is fixedly arranged on the framework on this substrate perisporium, detachable this frame that is connected with of this target layer plateFrame;
On this substrate, be installed with at least one guide plate affixed with one end this framework, the equal position of those guide platesBetween this substrate and this target layer plate, and cold around being formed with one with this substrate, this framework and this target layer plateBut agent layer;
This coolant layer comprise at least one influent stream road and at least one go out runner, respectively the one end in this influent stream road is used forPass into cooling agent, the other end is with respectively this goes out runner and is connected, and respectively this one end that goes out runner is cooling for flowing outAgent;
This target layer plate be shaped as circular arc, and the end face of this target layer plate and the shape of bottom surface are circular arcShape, and for making outside the pressure of pressure coolant in this coolant layer wall to this target layer plate points toNormal direction and by tangential equalization of strain.
2. X ray conversion target as claimed in claim 1, is characterized in that, this target layer plate and this frameBetween frame, for screw connects, this target layer plate is connected with this frame seal by a sealing ring.
3. X ray conversion target as claimed in claim 1, is characterized in that, this X ray conversion targetAlso comprise a sealing flanging assembly, sealing flanging assembly and this target layer plate, framework are affixed, and are positioned at thisThe top of target layer plate.
4. X ray conversion target as claimed in claim 1, is characterized in that, the quantity of this guide plateBe two, two these guide plates are set in parallel on this substrate.
5. X ray conversion target as claimed in claim 4, is characterized in that, the quantity in this influent stream roadBe one, this quantity that goes out runner is two, this influent stream road two this go out between runner.
6. X ray conversion target as claimed in claim 5, is characterized in that, a sidewall of this frameworkBe provided with three through holes, respectively one end of this through hole is connected with an ooling channel by an adapter assembly respectivelyLogical, the other end of one of them this through hole is connected with this influent stream road, the other end of two other this through holeRespectively with one this go out runner and be connected.
7. X ray conversion target as claimed in claim 6, is characterized in that, establish one end of this substrateHave three link slots, respectively one end of this link slot is connected with this through hole respectively, one of them this connectionThe other end of groove is connected with this influent stream road, the other end of two other this link slot respectively with one this go out streamRoad is connected.
8. the X ray conversion target as described in any one in claim 1～7, is characterized in that, eachOn this influent stream road and respectively, this goes out on runner to be equipped with one group of bar groove, and each is organized this groove and comprises severalBar groove, several these grooves arrange along this substrate length direction spaced and parallel.
9. X ray conversion target as claimed in claim 8, is characterized in that, respectively the shape of this grooveShape is herringbone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310521465.7A CN103578596B (en) | 2013-10-28 | 2013-10-28 | X ray conversion target |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310521465.7A CN103578596B (en) | 2013-10-28 | 2013-10-28 | X ray conversion target |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103578596A CN103578596A (en) | 2014-02-12 |
| CN103578596B true CN103578596B (en) | 2016-05-11 |
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| CN201310521465.7A Active CN103578596B (en) | 2013-10-28 | 2013-10-28 | X ray conversion target |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105788695B (en) * | 2016-04-22 | 2018-04-17 | 中国原子能科学研究院 | A kind of high-power electron irradiation accelerator X-ray conversion target |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06162974A (en) * | 1992-11-18 | 1994-06-10 | Toshiba Corp | X-ray tube |
| JPH1187089A (en) * | 1997-09-03 | 1999-03-30 | Mitsubishi Electric Corp | Radiation generator |
| KR101151858B1 (en) * | 2011-09-22 | 2012-06-01 | 주식회사엑스엘 | X-ray generating apparatus having multiple targets and multiple electron beams |
| CN202651055U (en) * | 2011-11-28 | 2013-01-02 | 天津市技术物理研究所 | X ray converter target |
| JP5936895B2 (en) * | 2012-03-27 | 2016-06-22 | 株式会社リガク | X-ray generator target, manufacturing method thereof, and X-ray generator |
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Effective date of registration: 20221207 Address after: 201800 Shanghai city Jiading District Road No. 2019 Patentee after: SHANGHAI INSTITUTE OF APPLIED PHYSICS, CHINESE ACADEMY OF SCIENCES Patentee after: Shanghai Alliance Investment Ltd. Address before: 201800 Shanghai city Jiading District Baojia Highway No. 2019 Patentee before: SHANGHAI INSTITUTE OF APPLIED PHYSICS, CHINESE ACADEMY OF SCIENCES |