CN103200759A - Heat dissipation mechanism of high-yield neutron generator - Google Patents
Heat dissipation mechanism of high-yield neutron generator Download PDFInfo
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- CN103200759A CN103200759A CN2013100836201A CN201310083620A CN103200759A CN 103200759 A CN103200759 A CN 103200759A CN 2013100836201 A CN2013100836201 A CN 2013100836201A CN 201310083620 A CN201310083620 A CN 201310083620A CN 103200759 A CN103200759 A CN 103200759A
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Abstract
The invention belongs to the heat dissipation technology of a high-yield neutron generator, and particularly relates to a novel heat dissipation mechanism of the high-yield neutron generator. An insulating heat-dissipation ceramic bar which is good in insulation and heat dissipation performance is placed on the outer side of a target bottom of a high-yield neutron tube, and flowing water or other cooling liquid is used for achieving cooling between the insulating heat-dissipation ceramic bar and the ground. A negative high voltage is applied at a target end of the high-yield neutron tube to facilitate the design of a storage power source, an ion source power source and a high-voltage power source of the neutron generator, and meanwhile control of the ion source power source working in a pulse mode is convenient. According to the neutron generator of the structure, the service life is obviously prolonged, and stability indicators are obviously improved.
Description
Technical field
The invention belongs to the heat dissipation technology of high yield neutron generator, be specifically related to a kind of cooling mechanism of novel neutron generator.
Background technology
Neutron tube is a kind of compact accelerator neutron source, and it all is sealed in ion source, accelerating system, target and pressure regulation system in the earthenware, constitutes electron tube simple and compact for structure, easy to use.The neutron tube of domestic production at present all is to adopt penning (PIG) ion source of drawing cation, add at the target end-80KV～-the negative acceleration high pressure of 180KV accelerates deuterium (D) ion and tritium (T) ion that ion source produces, and at target nuclear reaction takes place and produce neutron.When producing neutron, target can generate heat, if do not take cooling provision, the target temperature can sharply raise, and the deuterium that embeds on the target, tritium can discharge, and reduce the concentration of deuterium, tritium on the target, cause the decline significantly of neutron yield.
The cooling body that adopts in the high yield neutron generator was with neutron tube target ground connection in the past, realized cooling in the position at target place with the water that flows or other cooling fluids like this.This mechanism brings great inconvenience and unsteadiness for power supply design and the control of neutron tube.Because want to make neutron tube to produce neutron, holder power supply and ion source power supply all must be suspended on the just acceleration high pressure of 80KV～180KV, for the ease of at low-pressure end holder power supply and ion source power supply being mediated, need to use bulky isolating transformer.The hidden danger and the deficiency that exist be, if the isolation strength of isolating transformer dies down, can cause all electronics, electrical appliance part and neutron tube to burn, and more likely damages to operating personnel.In addition, make ion source be operated in pulse mode by isolating transformer, it is very difficult to want to obtain reasonable impulse waveform and pulse train.And adopt bar-shaped insulating radiation material as: the insulating radiation pottery is positioned between target and the ground.Still add at the target end like this-80KV～-the negative acceleration high pressure of 180KV, do not need isolating transformer, simplify the design of power supply and control circuit, and then can eliminate hidden danger and the deficiency that target ground connection cooling mechanism brings.
Summary of the invention
In order to overcome hidden danger and the deficiency that original high yield target for neutron generators ground connection cooling mechanism brings, the purpose of this invention is to provide a kind of heat sinking mechanism of high yield neutron generator.
Adopt both to have had good insulation performance, have the insulating radiation material of good thermal diffusivity again, it is put in the outside at the bottom of the high yield sealed ceramic neutron tube target, between insulating radiation material and ground, add cooling device.The length of insulating radiation material can satisfy insulating requirements and get final product, and leaves certain surplus.Be convenient to the design of neutron generator holder power supply, ion source power supply and high voltage source like this, also be convenient to the control of ion source power work in pulse mode simultaneously.
The technical solution adopted for the present invention to solve the technical problems is: adopt the well behaved material of insulating radiation, as the insulating radiation ceramic rod, be positioned over the outside at the bottom of the target of high yield neutron tube, between insulating radiation ceramic rod and ground, realize cooling with the water that flows or other cooling fluids.
The invention has the beneficial effects as follows, adopt the high yield neutron generator of this cooling mechanism, the life-span ratio under identical high pressure and line target ground connection cooling mechanism in the past improves about 1 order of magnitude, and stability is not more than 3%.
Description of drawings
Accompanying drawing is the cooling mechanism schematic diagram of high yield neutron generator.Wherein 1. high yield neutron tubes, 2. target, 3. insulating radiation ceramic rod, 4. cooler bin, 5. cooling fluid entrance, 6. cooling liquid outlet.
The present invention is further described below in conjunction with accompanying drawing.
Embodiment
The cooling mechanism of high yield neutron generator of the present invention, taken full advantage of the new results-insulating radiation pottery of material science, the heat with target produces is transmitted to cooler bin safely and fast from negative high-voltage end and namely holds, realization is to the cooling of target, and its structure and position relation are as shown in drawings.
At first the outside with insulating radiation ceramic rod 3 and target 2 closely contacts, and the length of insulating radiation ceramic rod 3 satisfies requirement of withstand voltage and leaves certain surplus simultaneously and get final product; Then the other end with insulating radiation ceramic rod 3 closely links to each other cooler bin 4 ground connection with the cooler bin made from stainless steel 4; Cooling fluid is entered in the cooler bin 4 by (water or other cooling fluids that flow) cooling fluid entrance 5, from cooling liquid outlet 6 outflows of cooler bin 4.High yield neutron tube 1, insulating ceramics rod 3, cooler bin 4 are sealed in the stainless steel cylinder that is filled with dielectric jointly, cooling fluid entrance 5 and cooling liquid outlet 6 and external communications.
Be example with Φ 70 pipes, adopt the high yield neutron generator of this cooling mechanism, improve about 1 order of magnitude in the high pressure of-180KV and the life-span under the 1.2mA line than target ground connection cooling mechanism in the past, stability is not more than 3%.
Claims (1)
1. the insulating radiation mechanism of high yield neutron generator, it is characterized in that: the outside of insulating radiation ceramic rod and target closely contacts, and the other end of insulating radiation ceramic rod closely links to each other with the cooler bin made from stainless steel, cooler bin ground connection; Cooling fluid is entered in the cooler bin by the cooling fluid entrance for water or other cooling fluids that flows, flow out from the cooling liquid outlet of cooler bin, high yield neutron tube, insulating ceramics rod, cooler bin are sealed in the stainless steel cylinder that is filled with dielectric jointly, cooling fluid entrance and cooling liquid outlet and external communications.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100836201A CN103200759A (en) | 2013-03-17 | 2013-03-17 | Heat dissipation mechanism of high-yield neutron generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100836201A CN103200759A (en) | 2013-03-17 | 2013-03-17 | Heat dissipation mechanism of high-yield neutron generator |
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| CN103200759A true CN103200759A (en) | 2013-07-10 |
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| CN2013100836201A Pending CN103200759A (en) | 2013-03-17 | 2013-03-17 | Heat dissipation mechanism of high-yield neutron generator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104093260A (en) * | 2014-07-16 | 2014-10-08 | 中国工程物理研究院核物理与化学研究所 | High potential terminal radiating device of high yield neutron generator |
| CN109451646A (en) * | 2018-12-14 | 2019-03-08 | 中国工程物理研究院核物理与化学研究所 | A kind of neutron tube target for the adjoint alpha particle detector of band |
| CN111093314A (en) * | 2019-12-02 | 2020-05-01 | 广东太微加速器有限公司 | Neutron generation target and target chamber using same |
| CN113140347A (en) * | 2021-03-25 | 2021-07-20 | 中科石金(安徽)中子技术有限公司 | High-temperature-resistant miniature neutron source |
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| CN2377794Y (en) * | 1999-05-21 | 2000-05-10 | 东北师范大学 | Microwave ion source ceramic self-target strong-current neutron tube |
| CN2416504Y (en) * | 2000-05-17 | 2001-01-24 | 西安石油勘探仪器总厂 | Micro logging neutron tube |
| US20030234355A1 (en) * | 2002-02-06 | 2003-12-25 | Ka-Ngo Leung | Neutron tubes |
| JP2006338945A (en) * | 2005-05-31 | 2006-12-14 | Mitsubishi Heavy Ind Ltd | Neutron generation tube |
| CN101978429A (en) * | 2008-02-27 | 2011-02-16 | 星火工业有限公司 | Long life high efficiency neutron generator |
| CN201821565U (en) * | 2010-10-11 | 2011-05-04 | 长春致方达科技有限责任公司 | Spherical target ceramic neutron pipe with embedded magnetic material ring |
| US20110114830A1 (en) * | 2009-11-16 | 2011-05-19 | Jani Reijonen | Electrode configuration for downhole nuclear radiation generator |
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- 2013-03-17 CN CN2013100836201A patent/CN103200759A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2377794Y (en) * | 1999-05-21 | 2000-05-10 | 东北师范大学 | Microwave ion source ceramic self-target strong-current neutron tube |
| CN2416504Y (en) * | 2000-05-17 | 2001-01-24 | 西安石油勘探仪器总厂 | Micro logging neutron tube |
| US20030234355A1 (en) * | 2002-02-06 | 2003-12-25 | Ka-Ngo Leung | Neutron tubes |
| JP2006338945A (en) * | 2005-05-31 | 2006-12-14 | Mitsubishi Heavy Ind Ltd | Neutron generation tube |
| CN101978429A (en) * | 2008-02-27 | 2011-02-16 | 星火工业有限公司 | Long life high efficiency neutron generator |
| US20110114830A1 (en) * | 2009-11-16 | 2011-05-19 | Jani Reijonen | Electrode configuration for downhole nuclear radiation generator |
| CN201821565U (en) * | 2010-10-11 | 2011-05-04 | 长春致方达科技有限责任公司 | Spherical target ceramic neutron pipe with embedded magnetic material ring |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104093260A (en) * | 2014-07-16 | 2014-10-08 | 中国工程物理研究院核物理与化学研究所 | High potential terminal radiating device of high yield neutron generator |
| CN109451646A (en) * | 2018-12-14 | 2019-03-08 | 中国工程物理研究院核物理与化学研究所 | A kind of neutron tube target for the adjoint alpha particle detector of band |
| CN109451646B (en) * | 2018-12-14 | 2024-02-13 | 中国工程物理研究院核物理与化学研究所 | Neutron tube target for accompanying alpha particle detector |
| CN111093314A (en) * | 2019-12-02 | 2020-05-01 | 广东太微加速器有限公司 | Neutron generation target and target chamber using same |
| CN113140347A (en) * | 2021-03-25 | 2021-07-20 | 中科石金(安徽)中子技术有限公司 | High-temperature-resistant miniature neutron source |
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Application publication date: 20130710 |