CN202939988U - Breathing-type collimator - Google Patents
Breathing-type collimator Download PDFInfo
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- CN202939988U CN202939988U CN 201220689678 CN201220689678U CN202939988U CN 202939988 U CN202939988 U CN 202939988U CN 201220689678 CN201220689678 CN 201220689678 CN 201220689678 U CN201220689678 U CN 201220689678U CN 202939988 U CN202939988 U CN 202939988U
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- collimating apparatus
- recyclegas
- horizontal plate
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Abstract
The utility model discloses a breathing-type collimator and belongs to the machinery device and nuclear technology field. The collimator comprises a housing, including a large end opening and a small end opening. An area of the large end opening is larger than an area of the small end opening. The large end opening and the small end opening are respectively arranged two opposite side surfaces of the housing. Two circulation gas inlets and two circulation gas outlets are mounted on the housing. A plurality of horizontal inserted boards are disposed in the housing. An internal neutron channel formed between the horizontal inserted boards is taken to be a gas guide board. According to the breathing-type collimator provided by the utility model, gas can complete full and excellent circulation in the collimator, a performance requirement on a collimator material is reduced and a gas activation effect in the collimator is avoided.
Description
Technical field
The utility model belongs to plant equipment and nuclear technology field, particularly a kind of type of respiration collimating apparatus.
Background technology
Spallation neutron source (CSNS) is national major science and technology infrastructure projects construction project.Be the big science device that China the Eleventh Five-Year Plan period focuses the consruction on, listed national medium-to long-range program for scientific and technological development in.Through State Council approved, by building a proton beam power, reach 100kW, effective impulse neutron flux spallation neutron source apparatus at the forefront in the world.Country supports approximately 1,200,000,000 yuan of pork barrels, and the construction period is 7 years.CSNS (CSNS) project, settle in scientific and technological park, lake, Guia Hill, Dongguan City, Guangdong Province, is to build Chinese First in to produce the neutron source of a large amount of scattered neutrons based on accelerator acceleration high energy proton bombardment metallic target.In this device, high-octane proton bombardment metallic target, cause the spallation reaction of metallic atom.As its name suggests, spallation, one be divided into many, metallic target this reaction in can discharge a large amount of neutrons, these neutrons are drawn out on experimental provision safely, for science and industrial research.The CSNS (CSNS) of building in 2011, as the First spallation neutron source of developing country, will enter the large spallation neutron source ranks in the world four.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, the offspring and the radioactive isotope that make proton capture excite absorb simultaneously in the beam-based device, so just can compensated loop and the deviation of transit element.In the RCS of CSNS, be provided with a main collimating apparatus, four collimating apparatuss and a momentum collimating apparatus, be provided with momentum collimating apparatus, a RTBT at LRBT and be provided with four momentum collimating apparatuss, they are key equipments of guaranteeing the operation of CSNS high-quality.
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.Simultaneously, 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 needs emphasis consideration Radiation Protection with development.Collimating apparatus is as one of critical component of high flux powdery diffractometry spectrometer, for the raising of the performances such as the normal operation of spectrometer and spectrometer resolution, has very important effect.At present mainly have in the world the collimating apparatus of two types, take the high vacuum collimating apparatus that Japan is representative, collimating apparatus inside is in vacuum state, and this material property with regard to the collimation device and intensity have proposed very high requirement.Another kind of is exactly that collimating apparatus inside passes into the character inactive gas, can reduce the performance requirement of collimation equipment material with the domestic ventilation collimating apparatus of developing.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.
The utility model content
The purpose of this utility model is to provide simple in structure, is convenient to the type of respiration collimating apparatus of controlling.The principle related to and equation have hydromechanical flow principles, thermophoretic forces principle, ideal gas model equation.The method that employing passes into gas can lower cavity and bear pressure, reduces wall thickness, reduces to a certain extent difficulty and the material cost of cavity body structure design.Horizontal plate can form inner middle subchannel, and a small amount of plate number not only can make simplicity of design, also can make to pass into gas and better complete inner circulation, avoids activation.Simultaneously horizontal plate adopts heating board, due to thermophoretic forces that thermograde has caused, makes particulate in airflow be not easy to be attached on the plate face.And become heating board in the time of can using, the temperature inside the box is constantly changed.Be the character inactive gas owing to passing in case, can be considered ideal gas.Utilize the Ideal-Gas Equation PV=nRT, draw in the situation that in case gas volume constant, ideal gas temperature changes, gas pressure intensity can change thereupon in case, after gas is heated, pressure can increase.Consider after gas is heated the impact that has expansion factor and gas flow rate to change, after gas is heated, pressure can further increase simultaneously.So temperature constantly changes, the continuous variation of gas pressure intensity just is similar to human lung's respiratory movement, so just forces residual portion gas to be discharged, thereby reaches designing requirement.Simultaneously suitable adjusting intake velocity and the variation of heating board temperature, can make the gas circulation better effects if.
The type of respiration collimating apparatus that the utility model provides, it is characterized in that this collimating apparatus comprises a shell, described shell contains a large port and a portlet, and the area of large port is greater than the area of portlet, and large port lays respectively on two sides that shell is relative with portlet;
Described shell is provided with recyclegas entrance and recyclegas outlet;
Be provided with several horizontal plates in described shell, form inner middle subchannel between horizontal plate and as the gas channeling plate.
The space that the setting of horizontal plate makes gas priority from the recyclegas entrance enters flow through and be separated by horizontal plate, last recyclegas flows out from the recyclegas outlet.
Large port connects the neutron generating means, and portlet is connected with sample cavity.
Described shell is according to device resistance to compression and radiation-resistant requirement, and its material should have good radiation resistance, and shell need to have good sealing property simultaneously, and shell is thick between 2mm ~ 10mm.
Described horizontal plate need to meet radiation-resistant requirement equally, and its material require has good radiation resistance.The layout of horizontal plate and quantity have important impact for the performance of device simultaneously.Horizontal plate alternately leaves space with large port and portlet, in order to recyclegas, passes through.The thickness of horizontal plate is between 10mm ~ 12mm.
Horizontal plate is heatable plate.
Each horizontal plate forms by three blocks of plates, and middle one deck is micarex, arranges heat coil on it, and two boards is heat-conducting plate in addition.
Described heat-conducting plate can be used stainless steel, also can use the better material of coefficient of heat conductivity.
The layout that the layout of micarex coil is pressed the general heating plate gets final product.
Consider the sealing of shell, the wiring of horizontal plate is drawn from the recyclegas entrance or from the recyclegas outlet.
Preferably 3 of horizontal plate quantity.
Described recyclegas entrance, recyclegas outlet are the significant design parts of this device.In the situation that aperture is given, only need to consider the position of perforate on shell.According to design result, the scheme of opening be the recyclegas entrance in shell upper, recyclegas exports at outer casing underpart, also can be as the case may be at other location arrangements openings.
The beneficial effects of the utility model: reduce the activation levels of gas in collimating apparatus, reduce manufacturing cost and difficulty of processing.The gateway condition that collimator apparatus of the present utility model is good by design, rational horizontal plate is arranged and suitable temperature variation, utilizes the control temperature variation to produce pressure and kinetic energy change, so just is similar to human lung's respiration.Can make gas complete fully 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 accompanying drawing explanation
Fig. 1 is type of respiration collimator apparatus schematic diagram;
Fig. 2 is type of respiration collimator apparatus front view;
The horizontal plate schematic diagram that Fig. 3 is the type of respiration collimating apparatus;
The horizontal plate skeleton view that Fig. 4 is the type of respiration collimating apparatus;
Number in the figure: 1-shell; The horizontal plate of 2-first; The horizontal plate of 3-second; 4-the 3rd horizontal plate; 5-recyclegas entrance; The outlet of 6-recyclegas; The 7-large port; The 8-portlet.
Embodiment
The following examples can make those skilled in the art more fully understand the utility model, but limit never in any form the utility model.
A kind of type of respiration collimating apparatus, this collimating apparatus comprises a shell 1, and described shell 1 contains a large port 7 and a portlet 8, and the area of large port is greater than the area of portlet, and large port lays respectively on two sides that shell is relative with portlet;
Described shell is provided with recyclegas entrance 5 and recyclegas outlet 6; Described recyclegas entrance 5, recyclegas outlet 6 are significant design parts of this device.In the situation that aperture is given, only need to consider the position of perforate on shell.According to design result, the scheme of opening be the recyclegas entrance in shell upper, recyclegas exports at outer casing underpart, the relative position of the two as shown in Figure 1, also can be as the case may be at other location arrangements openings;
Be provided with several horizontal plates in described shell, form inner middle subchannel between horizontal plate and as the gas channeling plate.
The space that the setting of horizontal plate makes gas priority from recyclegas entrance 5 enters flow through and be separated by horizontal plate, last recyclegas flows out from recyclegas outlet 6.
Horizontal plate is heatable plate.Each horizontal plate forms (as shown in Figure 3, a plate, b plate and c plate) by three blocks of plates, and middle one deck (b plate) is micarex, arranges heat coil on it, and two boards (a plate and c plate) is heat-conducting plate in addition.Described heat-conducting plate (a plate, c plate) is used stainless steel.The layout that the layout of micarex coil is pressed the general heating plate gets final product.The thickness of a plate, b plate, c plate can suitably be adjusted simultaneously.Horizontal plate quantity is 3.Horizontal plate alternately leaves space with large port and portlet, in order to recyclegas, passes through.As shown in Figure 2.The first horizontal plate 2 leaves space with portlet, and the second horizontal plate 3 leaves space with large port, and the horizontal plate 4 of-Di tri-leaves space with portlet.
In order to guarantee the sealing of shell 1, the wiring of horizontal plate is drawn from recyclegas entrance 5 or from recyclegas outlet 6.
Large port connects the neutron generating means, and portlet 8 is connected with sample cavity.
Described shell 1 is according to device resistance to compression and radiation-resistant requirement, and its material should have good radiation resistance, and shell 1 need to have good sealing property simultaneously, and shell is thick is 2mm.
Described horizontal plate need to meet radiation-resistant requirement equally, and its material require has good radiation resistance.The layout of horizontal plate and quantity have important impact for the performance of device simultaneously.The thickness of horizontal plate is 10mm.
The workflow of this collimating apparatus is comprised of the gentle body flow process of neutron flow process two parts.The neutron level is injected sample cavity; Gas enters finally and is flowed out by recyclegas outlet 6 from recyclegas entrance 5.
The motion process of related neutron is: the large port 7 of collimating apparatus is connected with the neutron generating means, portlet 8 is connected with sample cavity, and neutron enters collimating apparatus inside from large port 7, forms inner middle subchannel between horizontal plate, then neutron leaves collimating apparatus from portlet 8, enters sample cavity.
The process of circulation of related gas is: horizontal plate is as the gas channeling plate, the space that makes gas priority from recyclegas entrance 5 enters flow through and be separated by the horizontal plate 4 of the horizontal plate the 3, the 3rd of the first horizontal plate 2, second, last recyclegas flows out from recyclegas outlet 6.At gas flow, in the process of the horizontal plate 3 of the first horizontal plate 2, second, the 3rd horizontal plate 4, horizontal plate can generate heat.Utilize the effect of thermophoretic forces, in gas, fine particles is not trapped in wall, thereby avoids gas to be detained.Rationally control the variation of thermal value simultaneously, the temperature inside the box is constantly changed.Be the character inactive gas owing to passing in case, can be considered ideal gas.Utilize the Ideal-Gas Equation PV=nRT, draw in the situation that in case gas volume constant, ideal gas temperature changes, gas pressure intensity can change thereupon in case, after gas is heated, pressure can increase.Consider after gas is heated the impact that has expansion factor and gas flow rate to change, after gas is heated, pressure can further increase simultaneously.So temperature constantly changes, the continuous variation of gas pressure intensity just is similar to human lung's respiratory movement, thereby so just force residual portion gas to be discharged, reaches designing requirement.
Related recyclegas type should be the character inactive gass such as nitrogen or helium, carrys out the balance inside and outside differential pressure by the mode that passes into gas to collimating apparatus inside like this, can reduce design difficulty and the material requested intensity of collimating apparatus.
Related recyclegas gateway arrangement is: recyclegas entrance 5, enter collimating apparatus for recyclegas, and change flow direction by inner panel, in whole space, flow.Recyclegas outlet 6, leave collimating apparatus for recyclegas.Whole process guarantees not have immobilising dead angle in the collimating apparatus space.
The above; it is only preferably embodiment of the utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (10)
1. a type of respiration collimating apparatus, it is characterized in that this collimating apparatus comprises a shell (1), described shell (1) contains a large port (7) and a portlet (8), and the area of large port is greater than the area of portlet, and large port lays respectively on two sides that shell is relative with portlet;
Described shell is provided with recyclegas entrance (5) and recyclegas outlet (6);
Be provided with several horizontal plates in described shell, form inner middle subchannel between horizontal plate and as the gas channeling plate.
2. collimating apparatus according to claim 1 is characterized in that: the space that the horizontal plate of setting makes gas priority from recyclegas entrance (5) enters flow through and be separated by horizontal plate, last recyclegas flows out from recyclegas outlet (6).
3. collimating apparatus according to claim 1 is characterized in that: large port (7) connects the neutron generating means, and portlet (8) is connected with sample cavity.
4. collimating apparatus according to claim 1, it is characterized in that: horizontal plate alternately leaves space with large port and portlet, in order to recyclegas, passes through.
5. collimating apparatus according to claim 1, it is characterized in that: horizontal plate is heatable plate.
6. collimating apparatus according to claim 1 is characterized in that: the wiring of horizontal plate is drawn from recyclegas entrance (5) or from recyclegas outlet (6).
7. collimating apparatus according to claim 1, it is characterized in that: each horizontal plate forms by three blocks of plates, and middle one deck is micarex, arranges heat coil on it, and two boards is heat-conducting plate in addition.
8. collimating apparatus according to claim 1, it is characterized in that: horizontal plate quantity is 3.
9. collimating apparatus according to claim 1, it is characterized in that: the recyclegas entrance is in shell upper, and recyclegas exports at outer casing underpart.
10. collimating apparatus according to claim 1, it is characterized in that: described shell shell is thick between 2mm ~ 10mm, and the thickness of horizontal plate is between 10mm ~ 12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220689678 CN202939988U (en) | 2012-12-13 | 2012-12-13 | Breathing-type collimator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220689678 CN202939988U (en) | 2012-12-13 | 2012-12-13 | Breathing-type collimator |
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| Publication Number | Publication Date |
|---|---|
| CN202939988U true CN202939988U (en) | 2013-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220689678 Expired - Fee Related CN202939988U (en) | 2012-12-13 | 2012-12-13 | Breathing-type collimator |
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| Country | Link |
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| CN (1) | CN202939988U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021495A (en) * | 2012-12-13 | 2013-04-03 | 华北电力大学 | Breathable type collimator |
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2012
- 2012-12-13 CN CN 201220689678 patent/CN202939988U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021495A (en) * | 2012-12-13 | 2013-04-03 | 华北电力大学 | Breathable type collimator |
| CN103021495B (en) * | 2012-12-13 | 2015-07-15 | 华北电力大学 | Breathable type collimator |
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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: 20130515 Termination date: 20141213 |
|
| EXPY | Termination of patent right or utility model |