CN203026186U - Gas circulation device for neutron howitzer - Google Patents
Gas circulation device for neutron howitzer Download PDFInfo
- Publication number
- CN203026186U CN203026186U CN 201220636014 CN201220636014U CN203026186U CN 203026186 U CN203026186 U CN 203026186U CN 201220636014 CN201220636014 CN 201220636014 CN 201220636014 U CN201220636014 U CN 201220636014U CN 203026186 U CN203026186 U CN 203026186U
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- gas
- collimating apparatus
- howitzer
- circulation device
- shell
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Abstract
The utility model discloses a gas circulation device for a neutron howitzer and belongs to the technical field of mechanical equipment and nuclei. In a conical housing of the howitzer, N vertical plugboards and M horizontal plugboards of the howitzer are orthogonally fixed to allow the interior of the howitzer to be divided into different small cell channels; the small cell channels are used for allowing neutrons to pass through horizontally and gas to circulate; recycle gas inlets are formed in a top surface of a large port end of the howitzer; and recycle gas outlets are formed in a bottom surface of a small port end of the howitzer. The gas circulation device for the neutron howitzer is placed at specific positions of a ring and a transport line to eliminate protons which are not in designated tracks or have deviated momenta, so that deviations of elements of the ring and the transport line can be compensated by the method. The gas circulation device is based on a gas flow principle, and the structure is optimized, so that the gas circulation device can meet the gas cycling requirements, and an internal gas activation range is acceptable. The device is good in circulation effect and high in cycle efficiency, and the gas utilization rate is high.
Description
Technical field
The utility model belongs to core plant equipment field, particularly a kind of neutron collimator gas communication device.
Background technology
Spallation neutron source (CSNS) is national major science and technology infrastructure projects construction project.The spallation neutron source (CSNS) of China Reconstructs in 2011 will enter the large spallation neutron source ranks in the world four as the First spallation neutron source of developing country.CSNS is the advanced large-scale experiment platform of carrying out front subject and research in new high-tech, can capture in the world one seat for the multidisciplinary innovation of China good opportunity is provided.Main collimating apparatus is one of CSNS RCS key equipment.The beam-based device of CSNS is placed on respectively the ad-hoc location of ring (RCS) and transit (LRBT, RTBT), to eliminate not at planned orbit or momentum proton devious, wish that simultaneously offspring and radioactive isotope that proton capture excites absorb, and come the deviation of compensated loop and transit element by this method in the beam-based device.In the RCS of CSNS, be provided with a main collimating apparatus, 4 collimating apparatuss and 1 momentum collimating apparatus, be provided with 1 momentum collimating apparatus, RTBT at LRBT and be provided with 4 momentum collimating apparatuss, they are key equipments of guaranteeing the operation of CSNS high-quality.
Because collimating apparatus will absorb, trapped particle, this has determined that in beam-based device perform region be High Radiation Area, so the structural design of beam-based device and development need emphasis to consider Radiation Protection.In order to reduce in machine running process the beam-based device to the activation of element on every side, the beam-based device need to have high Cooling Heat Transfer performance, capability of resistance to radiation, its positioning accuracy request is high, in order to guarantee maintainer's safe operation, also to take into full account the remote operation and maintenance of collimating apparatus in design, reduce as far as possible radiation irradiation.Collimating apparatus is as one of critical component of high flux powdery diffractometry spectrometer, has very important effect for the raising of the performances such as the normal operation of spectrometer and spectrometer resolution.At present mainly there is in the world the collimating apparatus of two types, the high vacuum collimating apparatus take Japan as representative, collimating apparatus inside is in vacuum state, and this material property and intensity with regard to the collimation device has proposed very high requirement.Another kind of is exactly with the domestic ventilation collimating apparatus of developing, and collimating apparatus inside passes into inert gas, can reduce the performance requirement of collimation equipment material.Can not complete good circulation in collimating apparatus inside if be filled with gas, will cause gas activation, this should do one's utmost to be avoided in design.This collimator apparatus is by the good gateway condition of design, can make gas complete good circulation in collimating apparatus inside.Both reduce the performance requirement of collimation equipment material, avoided again the activation of gas in collimating apparatus inside.
The utility model content
The purpose of this utility model is to propose a kind of neutron collimator gas communication device for the deficiency that above-mentioned existing collimating apparatus exists, it is characterized in that, and be collimating apparatus large port 7 at an end of shell 1, the other end is collimating apparatus portlet 6; The vertical plate 2 of the interior vertical fix N bar collimating apparatus of shell 1 is separated into N+1 flat pass with shell 1; The horizontal plate 3 of M bar collimating apparatus is fixed with vertical plate 2 quadratures, and collimating apparatus inside is divided into different little lattice passages, and these little lattice passages pass and gas communication for neutron levels; N+1 recyclegas entrance 4 is separately positioned on the passage end face of collimating apparatus large port 7 ends; N+1 recyclegas outlet 5 is arranged on the passage bottom of collimating apparatus portlet 6 ends; In order to realize passing into the good circulation of gas, horizontal plate is done suitably change with vertical plate quantity, and even part is removed, guarantee gas in cyclic process by all little grid spaces, and the existence in the dead band of need to avoiding circulating.
Described N be 2 ?6; M be 0 ?6.
Described shell shell is thick between 2mm～10mm; This shell is thick should satisfy device resistance to compression and radiation-resistant requirement, and its material should have good radiation resistance.
Described vertical plate need to satisfy radiation-resistant requirement equally, and its material should have good radiation resistance, and the thickness of plate is between 1mm～3mm.
The described shell side of being cone.
The beneficial effects of the utility model: the present invention adopts the method that passes into gas can lower cavity and bears pressure, reduces wall thickness, reduces to a certain extent the difficulty of cavity body structure design.Anyhow plate can form inner middle subchannel, and suitably reducing the plate number, to be not only design convenient, also can make to pass into gas and better complete inner circulation, avoids activation.The purpose of this invention is to provide simple in structure, the collimator apparatus that accuracy is high.Effect reduces the activation levels of gas in collimating apparatus, reduces manufacture difficulty.
Description of drawings
Fig. 1 is the utility model ventilation collimator apparatus schematic diagram.
Fig. 2 is the ventilation collimator apparatus schematic diagram that removes horizontal plate
In figure, 1 ?shell; The vertical plate of 2-collimating apparatus; The horizontal plate of 3-collimating apparatus (can remove in case of necessity); 4 ?the recyclegas entrance; 5 ?recyclegas outlet; 6 ?the collimating apparatus portlet; 7 ?the collimating apparatus large port.
Embodiment
The utility model proposes a kind of neutron collimator gas communication device, the present invention will be further described below by the drawings and specific embodiments.
Fig. 1-2 is depicted as ventilation collimator apparatus schematic diagram.
In figure, be collimating apparatus large port 7 at an end of square conoidal Shell 1, the other end is collimating apparatus portlet 6; The interior vertical plate 2 of vertically fixing two collimating apparatuss of shell 1 is separated into three flat pass with square conical shell 1; Article four, the horizontal plate 3 of collimating apparatus is fixed with vertical plate 2 vertical parallel, and three recyclegas entrances 4 are separately positioned on three flat pass end faces of collimating apparatus large port 7 ends; Three recyclegas outlet 5 is arranged on three flat pass bottom surfaces of collimating apparatus portlet 6 ends.In the situation that the aperture is given, only need to consider the position of perforate on shell.
Described shell shell is thick between 2mm～10mm; This shell is thick should satisfy device resistance to compression and radiation-resistant requirement, and its material should have good radiation resistance.
Described vertical plate need to satisfy radiation-resistant requirement equally, and its material should have good radiation resistance, and the thickness of plate is between 1mm～3mm; Vertically the layout of plate and quantity have important impact for the performance of device: the existence of plate will certainly cause the generation of gas whirlpool, and distribution is inhomogeneous, but plate is as the reinforcement of collimating apparatus, can make the structure optimization of collimating apparatus, add the gas of the pressure-fired that is filled with, the collimating apparatus cost is reduced.
Embodiment
Neutron detector is connected with collimating apparatus large port 7, and portlet 6 is connected with sample cavity.Neutron enters collimating apparatus inside from large port 7, and then the vertical plate 2 that level is passed collimating apparatus and the horizontal channel that the horizontal plate 3 of collimating apparatus consists of leave collimating apparatus from portlet 6, enter sample cavity.
In order to reduce the design difficulty of collimator apparatus, come the inside and outside differential pressure of balance collimating apparatus by the mode that passes into gas to collimating apparatus inside.The gas that passes into can be helium, gas that argon gas isotonic absorptivity is low.
The vertical plate 2 of related collimating apparatus, the horizontal plate 3 of collimating apparatus can suitably reduce, especially be horizontal plate, can remove (as shown in Figure 2) fully in case of necessity.
Claims (5)
1.. a neutron collimator gas communication device is characterized in that, is collimating apparatus large port (7) at an end of shell (1), the other end is collimating apparatus portlet (6); In shell (1), the vertical plate (2) of vertical fix N bar collimating apparatus, be separated into N+1 flat pass with shell (1); The horizontal plate (3) of M bar collimating apparatus is fixed with vertical plate (2) quadrature, and collimating apparatus inside is divided into different little lattice passages; N+1 recyclegas entrance (4) is separately positioned on the passage end face of collimating apparatus large port (7) end; N+1 recyclegas outlet (5) is arranged on the passage bottom of collimating apparatus portlet (6) end.
2. a kind of neutron collimator gas communication device according to claim 1, is characterized in that, described N is the 2-6 sheet; M is the 0-6 sheet.
3. a kind of neutron collimator gas communication device according to claim 1, is characterized in that, described shell shell is thick between 2mm ~ 10mm;
4. a kind of neutron collimator gas communication device according to claim 1, is characterized in that, the thickness of described vertical plate is between 1mm ~ 3mm.
5. a kind of neutron collimator gas communication device according to claim 1, is characterized in that, the described shell side of being cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220636014 CN203026186U (en) | 2012-11-27 | 2012-11-27 | Gas circulation device for neutron howitzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220636014 CN203026186U (en) | 2012-11-27 | 2012-11-27 | Gas circulation device for neutron howitzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203026186U true CN203026186U (en) | 2013-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220636014 Expired - Fee Related CN203026186U (en) | 2012-11-27 | 2012-11-27 | Gas circulation device for neutron howitzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203026186U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333192A (en) * | 2018-01-25 | 2018-07-27 | 中国科学院高能物理研究所 | A kind of coarse collimator in rear end for neutron scattering |
-
2012
- 2012-11-27 CN CN 201220636014 patent/CN203026186U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333192A (en) * | 2018-01-25 | 2018-07-27 | 中国科学院高能物理研究所 | A kind of coarse collimator in rear end for neutron scattering |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20141127 |
|
| EXPY | Termination of patent right or utility model |