WO2012045252A1 - Enveloppe pour source - Google Patents

Enveloppe pour source Download PDF

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Publication number
WO2012045252A1
WO2012045252A1 PCT/CN2011/078336 CN2011078336W WO2012045252A1 WO 2012045252 A1 WO2012045252 A1 WO 2012045252A1 CN 2011078336 W CN2011078336 W CN 2011078336W WO 2012045252 A1 WO2012045252 A1 WO 2012045252A1
Authority
WO
WIPO (PCT)
Prior art keywords
source
adapter
inner casing
hole
radiation source
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.)
Ceased
Application number
PCT/CN2011/078336
Other languages
English (en)
Chinese (zh)
Inventor
王翔宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2012045252A1 publication Critical patent/WO2012045252A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F5/00—Transportable or portable shielded containers
    • G21F5/015—Transportable or portable shielded containers for storing radioactive sources, e.g. source carriers for irradiation units; Radioisotope containers

Definitions

  • the invention relates to the field of radioactive sources, and in particular to a radioactive source envelope. Background technique
  • Source enclosure a container for sealing a source of radiation. Since the radiation of the radioactive source may cause radiation danger to a certain space around it, the radioactive source must be placed in a sealed container during transportation and use, and the sealed container must meet specific technical requirements; according to different fields of use and use.
  • OBJECTIVE The specific activity or source of the radiation source required for different target doses is different; in addition, different application requirements also require the active area (radiation source as the cross-sectional area in the exit direction). Therefore, in order to be used for a variety of purposes and purposes, we have to design a variety of sealed source envelopes of different shapes and sizes.
  • the source enclosure must be certified by the International Atomic Energy Agency before it is used in the factory. The certification period is long and the requirements are high.
  • the multi-source cladding is only changed according to the source of the radioactive source or the area of the active area. Therefore, if the source enclosure source space can be changed according to the design requirements without changing the source cladding itself. That is, different radioactive sources can be applied to the same source enclosure, and only one IAEA certification is required at one time, which greatly simplifies the procedure and reduces the certification cost.
  • a source cladding including an outer casing, including an outer casing body and an outer casing sealing cover;
  • An inner casing disposed in the outer casing comprising an inner casing body and an inner casing sealing cover;
  • the radiation source adapter having a through hole for accommodating the radiation source
  • One end of the through hole of the radiation source adapter is connected to the bottom of the inner casing body, and the other end is connected to the inner casing sealing cover.
  • Another object of the present invention is to provide a source enclosure that can be used to seal a plurality of different sources of radiation.
  • a source cladding comprising: an outer casing, including an outer casing body and an outer casing sealing cover;
  • An inner casing disposed in the outer casing comprising an inner casing body and an inner casing sealing cover;
  • the source enclosure further includes a radioactive source adapter disposed adjacent to the bottom of the inner enclosure body and having an outer surface compliant with the inner surface of the inner casing body and detachable from the inner casing body, and the radioactive source adapter and the device A second adapter between the inner casing sealing covers, wherein the radiation source adapter has a through hole for accommodating a radiation source, the through hole is connected to the bottom of the inner casing body at one end, and the second adapter is connected to the other end.
  • the cross-sectional shape of the second adapter is any one of a rectangular shape, a T-shape, an inverted T-shape, a triangular shape or a I-shaped shape.
  • the through hole of the radiation source adapter is a single cylinder.
  • the through hole of the radiation source adapter comprises a plurality of columns parallel to each other.
  • the through hole of the radiation source adapter comprises a plurality of cylinders, and the central axis of the cylinders converges at a common focus.
  • the cross-sectional outer contour shape of the radio source adapter is circular, quincunx or polygonal.
  • the material of the radiation source adapter and the second adapter is metal tungsten, stainless steel or other metal.
  • the invention provides a source cladding, wherein the radiation source adapter determines the volume of the through hole according to the active area or the loading amount of different radiation sources, and the source cladding can be applied to a plurality of different active area or different loading.
  • the presence of the source adapter or the second adapter can also shield the radiation in the non-radiation direction to a certain extent, saving the external shielding material.
  • FIG. 1 is a schematic axial cross-sectional view showing a front view of an embodiment of a source cladding of the present invention
  • Figure 2 is a cross-sectional view of the source package of the present invention in the A-A direction of Figure 1;
  • Figure 3 is a schematic axial cross-sectional view of another embodiment of the source package of the present invention;
  • Figure 4 is a schematic view of the radiation source adapter comprising a plurality of parallel through holes
  • Figure 5 is a schematic view of the radiation source adapter including a plurality of focusing through holes
  • Figure 6 is a schematic cross-sectional view showing another source envelope of the present invention. detailed description
  • Figure 1 is an axial cross-sectional view showing a front view of an embodiment of a source envelope of the present invention
  • Figure 2 is a cross-sectional view of Figure 1 in the direction of AA. As shown in FIG. 1 and FIG.
  • a source cladding includes an outer casing, and the outer casing comprises an outer casing body 10 and an outer casing sealing cover 11 sealed and connected thereto; the inner casing is disposed inside the outer casing, and the inner casing comprises An inner casing body 20 and an inner casing sealing cover 21 sealingly connected thereto; and a radiation source adapter 30 disposed inside the inner casing and closely fitting with the inner casing, the source adapter 30 having a through hole for accommodating the radiation source 40 The one end of the through hole of the radioactive source adapter The bottom of the inner casing body 20 is connected, and the other end is connected to the inner casing sealing cover 21.
  • the aperture size of the through hole is determined according to different radiation source requirements. Specifically, the aperture of the through hole may be determined according to the active area of the radiation source.
  • the IAEA certifies and awards the certificate.
  • the adjustment of the active area of the source 40 is achieved by designing the source adapter 30 of different shapes and apertures.
  • the source adapter 30 is first placed in the inner casing body 20, then loaded into the radiation source 40, and the radiation source is sealed by the inner casing sealing cover 21.
  • the inner casing containing the radiation source is then placed in the outer casing body 10, and the inner casing is sealed by the outer casing sealing cover 11.
  • the inner casing sealing cover 21 and the radiation source adapter are A second adapter 50 is disposed between the ends of the inner casing body 20, and the other end is connected to the second adapter 50 and sealed by the second adapter 50 after being loaded.
  • the height H of the source adapter 30 can be designed more flexibly to accommodate the adjustment of the active area D of the source and the number of sources 40.
  • the second adapter 50 is mainly used for fixing the radiation source adapter 30 in the inner casing and functions as a sealing layer, sealing the radiation source in the through hole of the radiation source adapter 30 and shielding the radiation source to a certain extent.
  • the radiation in the radial direction, the cross-sectional shape of the second adapter 50 may be any one of a rectangular shape, a T-shape, an inverted T-shape, a triangular shape, or an I-shape, and is mainly to satisfy the adjustment of the height H of the radiation source adapter.
  • the local and minor variations of the above shapes are within the scope of the present invention, and the height H of the above-mentioned source adapter 30 ranges from [ ⁇ , ⁇ ], where HI is the maximum of the inner cladding sealing cover 21 to the bottom of the inner casing 20.
  • the range of the active area D of the source is [1, D1], where D1 is the bottom area of the inner cladding 20.
  • the second suitable The adapter is selected from a cylindrical shape that fits the inner surface of the inner cladding, that is, its cross section is rectangular.
  • the source amount and the active area can be simultaneously adjusted by designing different radiation source adapters 30.
  • the aperture and length of the through hole are determined according to different radio source requirements. Specifically, the aperture of the through hole may be determined according to the active area of the source, and the length of the through hole may be determined according to the source of the source.
  • the through hole of the source adapter 30 is a cylinder as shown in Figs.
  • the through hole of the source adapter 30 may be a single multi-faced cylinder or the like as needed. More preferably, it may be a plurality of mutually parallel cylinders.
  • the radiation source 40 is installed in seven mutually parallel cylindrical through holes and sealed by the second adapter 50.
  • the radiation source The through hole of the adapter 30 may further include a plurality of cylinders whose central axes converge at a common focus.
  • the radiation source 40 is mounted in seven cylindrical through holes whose axes are focused on the focus. And sealed by the second adapter 50.
  • the outer contour of the outer casing can be diversified as long as the outer contour can be matched with the inner casing body 21, such as the volume and the cross-sectional area. Round, plum or polygon.
  • the outer surface of the source adapter 30 is in close contact with the inner surface of the inner casing body 20.
  • the source adapter 30 is annular, as shown in FIG.
  • the outer contour shape of the cross section of the source adapter 30 may also be in the shape of a quincunx, as shown in FIG.
  • the function of the source adapter 30 and the second adapter 50 is to apply a change in the number of the radiation source 40 or the area of the active area, and on the other hand, a material having a certain shielding effect is required, which can form a certain non-radiative direction.
  • the shielding effect is therefore recommended as metal tungsten, stainless steel or other metals; in this embodiment, the material of both is metal tungsten.
  • the source cladding of the present invention only needs to certify the inner and outer envelopes after design and manufacture, and design the radiation source adapter 30 of different volume and cross-sectional area to realize the source cladding for different fields and different purposes.
  • the effect of the source of the seal. That is, once certified, multiple uses The purpose is to solve the problem of certification of different radioactive source sealing devices, which greatly saves the resources of enterprises and certification institutions; and also shields the radiation in the non-radiation direction to some extent.
  • the source enclosure of the present embodiment is used in a radiation therapy apparatus, the radiation therapy apparatus further comprising a treatment head, a support for supporting the treatment head, a driving device for driving the movement of the treatment head, for supporting the patient and positioning The body support device for the lesion. If the radiation therapy device in this embodiment needs to replace the active area or the source of the radiation source, the source cladding can be redesigned without re-certification, which can save the certification cost and time of the radiation therapy device provider for the radiation source sealing device. .
  • the spirit and scope of the invention Thus, it is intended that the present invention cover the modifications and variations of the inventions

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Radiation-Therapy Devices (AREA)
  • Particle Accelerators (AREA)

Abstract

La présente invention concerne une enveloppe pour une source. L'enveloppe comprend une enveloppe extérieure qui contient un corps principal d'enveloppe extérieure et un couvercle d'étanchéité pour l'enveloppe extérieure et une enveloppe intérieure située dans l'enveloppe extérieure qui contient un corps principal d'enveloppe intérieure et un couvercle d'étanchéité pour l'enveloppe intérieure, ainsi qu'un adaptateur de source de rayonnement, situé dans l'enveloppe intérieure. Une surface extérieure de l'adaptateur de source de rayonnement correspond à la surface intérieure du corps principal d'enveloppe intérieure et peut en être séparée. L'adaptateur de source de rayonnement comprend un trou traversant, permettant de maintenir la source de rayonnement. Le trou traversant de l'adaptateur de source de rayonnement est relié au fond du corps principal de l'enveloppe intérieure sur une extrémité et il est relié sur l'autre extrémité au couvercle d'étanchéité pour l'enveloppe intérieure. L'enveloppe pour la source de l'invention peut non seulement permettre de sceller diverses sources de rayonnement mais aussi bloquer le rayon dans une certaine mesure, dans une direction différente de celle du rayonnement; le matériau d'enveloppe extérieure peut ainsi être économisé.
PCT/CN2011/078336 2010-10-09 2011-08-12 Enveloppe pour source Ceased WO2012045252A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2010105017706A CN102446568A (zh) 2010-10-09 2010-10-09 一种源包壳
CN201010501770.6 2010-10-09

Publications (1)

Publication Number Publication Date
WO2012045252A1 true WO2012045252A1 (fr) 2012-04-12

Family

ID=45927213

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/078336 Ceased WO2012045252A1 (fr) 2010-10-09 2011-08-12 Enveloppe pour source

Country Status (2)

Country Link
CN (1) CN102446568A (fr)
WO (1) WO2012045252A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113744910B (zh) * 2021-08-25 2025-03-25 成都中核高通同位素股份有限公司 一种工业辐照用密封放射源装置
CN116400401A (zh) * 2023-03-07 2023-07-07 国家核安保技术中心 一种热功率刻度源

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0057867A1 (fr) * 1981-02-03 1982-08-18 Nukem GmbH Conteneur multicouche pour le stockage efficace de longue durée de matériau radioactif
US4535250A (en) * 1984-05-30 1985-08-13 The United States Of America As Represented By The United States Department Of Energy Container for radioactive materials
JPS6280597A (ja) * 1985-10-03 1987-04-14 三菱重工業株式会社 放射性物質の輸送容器
CA2365648A1 (fr) * 1999-03-02 2000-09-08 Mallinckrodt Inc. Conteneur pour substances radioactives
CN201397690Y (zh) * 2009-05-15 2010-02-03 北京树诚科技发展有限公司 一种放射源包壳

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1193720B1 (fr) * 2000-04-25 2017-01-11 Japan Casting & Forging Corporation Ebauche pour une enceinte de confinement de substance radioactive et procede de production
US7199375B2 (en) * 2004-10-12 2007-04-03 Bard Brachytherapy, Inc. Radiation shielding container that encloses a vial of one or more radioactive seeds
ATE555480T1 (de) * 2005-07-27 2012-05-15 Mallinckrodt Llc Einheiten zur strahlungsabschirmung und verfahren zu deren verwendung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0057867A1 (fr) * 1981-02-03 1982-08-18 Nukem GmbH Conteneur multicouche pour le stockage efficace de longue durée de matériau radioactif
US4535250A (en) * 1984-05-30 1985-08-13 The United States Of America As Represented By The United States Department Of Energy Container for radioactive materials
JPS6280597A (ja) * 1985-10-03 1987-04-14 三菱重工業株式会社 放射性物質の輸送容器
CA2365648A1 (fr) * 1999-03-02 2000-09-08 Mallinckrodt Inc. Conteneur pour substances radioactives
CN201397690Y (zh) * 2009-05-15 2010-02-03 北京树诚科技发展有限公司 一种放射源包壳

Also Published As

Publication number Publication date
CN102446568A (zh) 2012-05-09

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