CN206259192U - Neutron howitzer - Google Patents
Neutron howitzer Download PDFInfo
- Publication number
- CN206259192U CN206259192U CN201621178472.7U CN201621178472U CN206259192U CN 206259192 U CN206259192 U CN 206259192U CN 201621178472 U CN201621178472 U CN 201621178472U CN 206259192 U CN206259192 U CN 206259192U
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- Prior art keywords
- block
- vacuum chamber
- neutron
- hole
- howitzer
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- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 238000006073 displacement reaction Methods 0.000 claims abstract description 14
- 239000011553 magnetic fluid Substances 0.000 claims abstract description 13
- 230000033001 locomotion Effects 0.000 claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 2
- 238000002474 experimental method Methods 0.000 abstract description 3
- 239000000306 component Substances 0.000 description 9
- 230000005855 radiation Effects 0.000 description 6
- 238000007789 sealing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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- Particle Accelerators (AREA)
Abstract
A kind of neutron howitzer, including：Vacuum chamber；Block in vacuum chamber, stop-surface is provided with the through hole of different cross section, and stop bottom is provided with mounting seat；And be fixedly connected with mounting seat, for drive block move transmission component.The utility model, by the through hole that multiple different cross section sizes are set on block, by motor and transmission component, the movement of precise control vacuum chamber internal stop, the need for different experiments, neutron streaming is set to pass through the through hole of corresponding sectional dimension on block, so as to obtain the neutron streaming of correspondence beam spot size.Transmission component is located in vacuum chamber, and drive device is located at outside vacuum, and the two is connected by magnetic fluid seal driving device, realizes motion outside the vacuum chamber to interior；LVDT displacement transducers are set on block, the positional information of block is constantly fed back into control device, realize the precise control of stop location so that different cross section through hole switches fast and accurately, greatly improves operating efficiency.
Description
Technical field
The application is related to study of high energy physics field, more particularly to a kind of neutron howitzer.
Background technology
The neutron that neutron source is projected realizes collimating effect by neutron howitzer, to constrain longitudinal direction of the neutron along anticipated orientation
With lateral angles divergence so as to form neutron beam；Simultaneously as the beamline assembly of innermost layer, neutron howitzer needs shielding
Stray neutron outside autocollimator, prevents it from entering influence bunch quality in neutron beam.Collimater has concurrently to the neutron for passing through
Collimation-control neutron divergence and the function of shielding-realize the inside and outside isolation of neutron beam, are any neutron beam engineering and scientific research
The core component of device.
Existing neutron howitzer mainly by setting block in vacuum chamber, passes through neutron streaming logical on block
Hole, so as to the regulation for realizing halved tie a fluid stream shape of spot and size is collimated.And processing one is led on existing collimater each block
Hole, when the neutron streaming of different cross section size is needed, mainly changes corresponding block by artificial mode, and this is generally required
Accelerator is shut down and waits block to change completion, simultaneously because being located at radiation environment, replacing personnel need to wear thick and heavy radiation proof
Clothes are operated, whole process time and effort consuming, inefficiency, increase cost.
Utility model content
The utility model provides a kind of neutron howitzer, it is intended to solves existing neutron howitzer and obtains different cross section size
Neutron streaming needs manually more shift block, causes operating efficiency low, increases the problem of cost.
A kind of neutron howitzer, including：
Vacuum chamber, the vacuum chamber is used to provide the vacuum environment that neutron beam is passed through；
Block, the block is located in the vacuum chamber, and the stop-surface is provided with the through hole of different cross section, the gear
Block bottom is provided with mounting seat；
Transmission component, the transmission component is fixedly connected with the mounting seat, for driving the block to move；
Control device, the control device is arranged at outside the vacuum chamber, and is electrically connected with the transmission component.
Described neutron howitzer, wherein, the transmission device includes leading screw, the motor for driving the leading screw to rotate, with
And it is arranged at the nut being meshed with the leading screw in the mounting seat.
Described neutron howitzer, wherein, the mounting seat bottom is provided with the sliding block perpendicular to the through hole bearing of trend,
Vacuum chamber surface is provided with the guide rail being adapted with the sliding block.
Described neutron howitzer, wherein, the vacuum chamber surface is provided with the magnetic fluid of the connection leading screw and motor
Sealed gearing device.
Described neutron howitzer, wherein, the block is that the sub- block of multiple unlike materials is composited, the sub- gear
Block is stacked successively along the through hole bearing of trend.
Described neutron howitzer, wherein, the sub- block includes positive stop and backstop, and the positive stop keeps off for copper
Block, the backstop is break iron；The positive stop is 3 along the thickness ratio of the through hole bearing of trend with the backstop:7.
Described neutron howitzer, wherein, a vacuum chamber side surface relative with described through hole one end is provided with confession
The entrance that neutron beam enters, the vacuum chamber opposite side surface relative with the through hole other end is provided with to be projected for neutron beam
Outlet.
Described neutron howitzer, wherein, the mounting seat is provided with LVDT displacement transducers, the LVDT displacement sensings
Device is communicated to connect with the control device.
Described neutron howitzer, wherein, the transmission component is provided with the limit for limiting the block shift motion
Bit switch, the limit switch is electrically connected with the control device, and the limit switch is ceramic limit switch.
Described neutron howitzer, wherein, the vacuum chamber top is the circular arc of anti-deformation.
Neutron howitzer given by the utility model, by setting the through hole of multiple different cross section sizes on block,
By motor and transmission component, the movement of precise control vacuum internal stop, according to different experiments the need for, make neutron streaming smooth
By the through hole of corresponding sectional dimension on block, so as to obtain the neutron streaming of corresponding beam spot size.Transmission component is located at vacuum
In casing, drive device is located at outside vacuum chamber, and the two is connected by magnetic fluid seal driving device, realizes motion from vacuum tank
It is delivered in vacuum chamber in vitro；LVDT displacement transducers are set on block, the positional information of block is constantly fed back into control
Device processed, realizes the precise control of stop location so that different cross section through hole switches fast and accurately, greatly improves work
Efficiency.
Brief description of the drawings
Fig. 1 be the utility model embodiment in, the structural representation of neutron howitzer；
Fig. 2 be the utility model embodiment in, the structural representation of block；
Fig. 3 be the utility model embodiment in, the side view of neutron howitzer；
Fig. 4 be Fig. 3 in A-A to sectional view；
Specific embodiment
The application is described in further detail below by specific embodiment combination accompanying drawing.
A kind of neutron howitzer that the present embodiment is provided, as shown in figure 1, including neutron howitzer main body, and be used for
The support 2 of stationary body.Main body includes a vacuum chamber 1, and is arranged on the block 3 in vacuum chamber 1.1 liang of vacuum chamber
Side is provided with the entrance 11 and outlet 12 passed through for neutron current.The inside of vacuum chamber 1 is provided with block 3, as shown in Fig. 2 block 3
Surface just to entrance 11 and outlet 12 is provided with multiple through holes 30 of different cross section, and through hole 30 is arranged (in Fig. 2 in the horizontal direction
What is shown is section circle and two through holes 30 in direction), the entrance 11 of the insertion vacuum chamber 1 of through hole 30, outlet 12, i.e., very
The entrance 11 of empty van body 1, outlet 12 overlap with the axis of through hole 30 so that when through hole 30 is just to entrance 11, part neutron beam
Stream can be projected through through hole 30 by outlet 12, so as to obtain the neutron streaming of different cross section.The bottom of block 3 is fixed with peace
Dress seat 4, is additionally provided with the transmission component that mounting seat 4 can be driven to move in the horizontal direction, and set for driving this in vacuum chamber 1
The drive device of transmission component operating.Moved by controlling mounting seat 4, so as to drive block 3 to move.Neutron in the present embodiment
Collimater also includes the control device being electrically connected with the drive device outside the inside electric elements of vacuum chamber 1 and vacuum chamber 1.Control
Device control block 3 processed is moved along the horizontal direction perpendicular to through hole 3, by adjusting the position of block 3, control neutron beam circulation
Selected through hole 30 is crossed, so as to obtain the neutron streaming in expected section.
As shown in Fig. 2 block 3 is many sub- blocks, every sub- block is prepared using different materials, its surface identical bits
Put and be equipped with corresponding through hole 30, sub- block is stacked and is compounded to form block 3 successively along the bearing of trend of through hole 30.The present embodiment
In, sub- block include positive stop 31 and backstop 32, positive stop 31 be copper block, backstop 32 be break iron, positive stop 31 with
The cross sectional shape of backstop 32 is identical, and the thickness ratio both along the bearing of trend of through hole 30 is 3:7, in the present embodiment, positive stop 31
0.3m and 0.7m are respectively with the thickness of backstop 32, copper and iron material can effectively absorb and shield and cannot pass through through hole 30
Unnecessary neutron, substantially reduces neutron experiment background while collimated neutron bean stream.In the application other embodiment, block 3
More than two sub- blocks can also be included.
Specifically, as shown in figs 2-4, transmission component is leading screw 51 and the spiral shell for being fixed on the bottom centre position of mounting seat 4
Female 52, drive device is motor 6.Leading screw 51 is set along the direction run perpendicular to neutron streaming, when leading screw 51 is rotated, passes through
The nut 52 that is engaged with drives block 3 to be moved axially along leading screw so that different through holes 30 by entrance 11 and outlet 12 it
Between, so as to obtain the neutron streaming of different cross section.Motor 6 is arranged on the outside of vacuum chamber 1, to ensure motor 6 and leading screw 51
End junction does not destroy the seal of vacuum chamber 1, in the present embodiment, is also provided between motor 6 and the end of leading screw 51
Magnetic fluid seal driving device 7.Magnetic fluid seal driving device 7 is prior art, and it utilizes magnetic fluid medium in externally-applied magnetic field
Control under, allow rotating shaft one week to form magnetic fluid sealing ring so that rotating shaft is in rotation process, phase between rotating shaft and bearing block
Sealing is still kept to external world.
As shown in Figures 1 and 2, magnetic fluid seal driving device 7 is arranged on the outside of vacuum chamber 1, its output shaft and silk
The end of thick stick 51 is fixedly connected.Specifically, vacuum chamber 1 is provided with an axle sleeve connected inside and outside it, axle sleeve position and vacuum chamber 1
It is tightly connected (for example weld), it is located at the lateral ends of vacuum chamber 1 and is equipped with the output end of magnetic fluid seal driving device 7
One adpting flange 71, magnetic fluid seal driving device 7 is fixed on the side wall of vacuum chamber 1 by flange 71, while playing close
Seal the effect of vacuum.The output shaft of magnetic fluid seal driving device 7 is extended to inside vacuum chamber 1 through axle sleeve, and and leading screw
51 end is connected by shaft coupling 8, and input shaft is arranged on the outside of vacuum chamber 1, and the output shaft with motor 6 is connected.Using
Such setting, can rotate in the external drive leading screw 51 of vacuum chamber 1, there is the sealing for not interfering with vacuum chamber 1.
As shown in Fig. 2 the bottom of mounting seat 4 is located at the both sides of leading screw 51 (at entrance 11 or outlet 12) is respectively equipped with two
Sliding block 41.The correspondence position of bottom 10 of vacuum chamber 1 is provided with the guide rail 11 corresponding with sliding block 41, and sliding block 41 can be along guide rail
11 movements, bearing of trend of the direction perpendicular to through hole 30.When being moved under traction of the mounting seat 4 in leading screw 51, sliding block 41 is being led
Slided along the direction of feed of leading screw 51 on rail 11.
As shown in figure 4, the two ends of leading screw 51 are equipped with bearing 510, it is that the lubrication preferably solved under vacuum radiation environment is asked
Topic, in the present embodiment, is lubricated between leading screw 51 and bearing 510, nut 52 from vacuum radiation hardness lubricating grease；Leading screw 51
And guide rail 11 is prepared from 304 stainless steels.Motor 6 using can long-range precise control radiation hardness stepper motor.
To be precisely controlled the displacement of block 3, the low LVDT displacement transducers of deflation rate are also installed inside vacuum chamber 1,
The displacement of block 3 is accurately detected, the LVDT displacement transducers are electrically connected or lead to the control device being arranged at outside vacuum chamber 1
News connection, constantly feeds back to control device, so that the displacement to block carries out accurate adjustment by the displacement information of block 3.Block 3 is moved
Extreme position also set up limit switch, limit switch is electrically connected with control device, when block 3 trigger limit switch after, control dress
Put the drive actions that automatic control motor 6 stops along the former direction of motion.Limit switch uses ceramic material, LVDT displacement transducers
Prepared using radiation-resistant material.
As shown in Figures 1 and 3, to cause that vacuum chamber 1 has certain non-deformability, the top of vacuum chamber 1 is adopted
With the circular arc for arching upward, and many places reinforcement 13 is set.
Neutron howitzer given by the utility model, by setting the through hole of multiple different cross section sizes on block,
Block is drawn by leading screw to move, you can realize being precisely controlled the position of block so that the through hole that neutron current passes through different cross section,
So as to obtain the neutron streaming of respective cross-section.Magnetic fluid seal driving device is used between leading screw and drive device, can be realized
With the drive connection of external driver device, and the overall tightness of vacuum chamber is not destroyed；LVDT displacements are set on block to pass
Sensor, constantly feeds back to control device by the positional information of block, realizes the precise control of stop location so that different cross section leads to
Hole switches fast and accurately, greatly improves operating efficiency.
Above content is to combine the further description that specific embodiment is made to the application, it is impossible to assert this Shen
Specific implementation please is confined to these explanations.For the application person of an ordinary skill in the technical field, do not taking off
On the premise of conceiving from the present application, some simple deduction or replace can also be made.
Claims (10)
1. a kind of neutron howitzer, it is characterised in that including：
Vacuum chamber, the vacuum chamber is used to provide the vacuum environment that neutron beam is passed through；
Block, the block is located in the vacuum chamber, and the stop-surface is provided with the through hole of different cross section, the block bottom
Portion is provided with mounting seat；
Transmission component, the transmission component is fixedly connected with the mounting seat, for driving the block to move；
Control device, the control device is arranged at outside the vacuum chamber, and is electrically connected with the transmission component.
2. the neutron howitzer described in claim 1, it is characterised in that the transmission device includes leading screw, drives the leading screw
The motor of rotation, and it is arranged at the nut being meshed with the leading screw in the mounting seat.
3. neutron howitzer as claimed in claim 2, it is characterised in that the mounting seat bottom is provided with perpendicular to the through hole
The sliding block of bearing of trend, vacuum chamber surface is provided with the guide rail being adapted with the sliding block.
4. neutron howitzer as claimed in claim 2, it is characterised in that the motor is arranged at outside the vacuum chamber,
The leading screw is arranged inside the vacuum chamber, and the vacuum chamber surface is provided with the magnetic fluid of the connection leading screw and motor
Sealed gearing device.
5. neutron howitzer as claimed in claim 1, it is characterised in that the block is that the sub- block of multiple unlike materials is answered
Conjunction is formed, and the sub- block is stacked successively along the through hole bearing of trend.
6. neutron howitzer as claimed in claim 5, it is characterised in that the sub- block includes positive stop and backstop, institute
Positive stop is stated for copper block, the backstop is break iron；The positive stop is with the backstop along the through hole bearing of trend
Thickness ratio be 3:7.
7. the neutron howitzer as described in claim 1-6 is any, it is characterised in that the vacuum chamber and described through hole one end
A relative side surface is provided with the entrance entered for neutron beam, and the vacuum chamber opposite side is relative with the through hole other end
Surface is provided with the outlet projected for neutron beam.
8. the neutron howitzer as described in claim 1-6 is any, it is characterised in that the mounting seat is provided with LVDT displacements biography
Sensor, the LVDT displacement transducers are communicated to connect with the control device.
9. the neutron howitzer as described in claim 1-6 is any, it is characterised in that the transmission component is provided with for limiting
The limit switch of the block shift motion, the limit switch is electrically connected with the control device, and the limit switch is ceramics
Limit switch.
10. the neutron howitzer as described in claim 1-6 is any, it is characterised in that the vacuum chamber top is anti-deformation
Circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621178472.7U CN206259192U (en) | 2016-11-03 | 2016-11-03 | Neutron howitzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621178472.7U CN206259192U (en) | 2016-11-03 | 2016-11-03 | Neutron howitzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206259192U true CN206259192U (en) | 2017-06-16 |
Family
ID=59024169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621178472.7U Expired - Fee Related CN206259192U (en) | 2016-11-03 | 2016-11-03 | Neutron howitzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206259192U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106531280A (en) * | 2016-11-03 | 2017-03-22 | 东莞中子科学中心 | Neutron collimator |
| CN108806818A (en) * | 2018-04-17 | 2018-11-13 | 东莞理工学院 | A kind of four knife diaphragms of adjustable neutron flow |
-
2016
- 2016-11-03 CN CN201621178472.7U patent/CN206259192U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106531280A (en) * | 2016-11-03 | 2017-03-22 | 东莞中子科学中心 | Neutron collimator |
| CN108806818A (en) * | 2018-04-17 | 2018-11-13 | 东莞理工学院 | A kind of four knife diaphragms of adjustable neutron flow |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170616 Termination date: 20181103 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |