CN110189848A - A kind of small-sized irradiation devices based on californium 252 neutron source - Google Patents
A kind of small-sized irradiation devices based on californium 252 neutron source Download PDFInfo
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- CN110189848A CN110189848A CN201910629462.2A CN201910629462A CN110189848A CN 110189848 A CN110189848 A CN 110189848A CN 201910629462 A CN201910629462 A CN 201910629462A CN 110189848 A CN110189848 A CN 110189848A
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K5/00—Irradiation devices
- G21K5/10—Irradiation devices with provision for relative movement of beam source and object to be irradiated
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Abstract
The invention discloses a kind of small-sized irradiation devices based on californium 252 neutron source, including radioactive source, radiation source movements control unit, irradiation cup, irradiation cup motion control unit, controller and host computer；Wherein, the radioactive source is californium 252 neutron source, does straight reciprocating motion along the vertical direction by radiation source movements control unit driving；For the irradiation cup for placing object to be irradiated and can expose to the open air in radioactive source radiation field, the irradiation cup motion control unit controls the irradiation cup uniform rotation；The radiation source movements control unit and irradiation cup motion control unit are connect with controller, and the controller is connect with host computer.The present invention realizes neutron rediation device miniaturization using californium 252 neutron source, while being uniformly controlled by host computer, realizes the accurate control of each control unit；The present invention has filled up the blank in low dose of neutron irradiation application aspect, the necessary complement that can be irradiated as accelerator neutron generator and pile neutron source.
Description
Technical field
The present invention relates to applied nuclear technologies fields, and in particular to a kind of small-sized irradiation devices based on californium 252 neutron source.
Background technique
The peaceful use of nuclear technology is applied and is developed on a large scale after the mankind step into 21 century, in Application of Nuclear Technology
It is divided into power nuclear technology and non-powered nuclear technology two major classes in field, the field being related to includes basic research, industry, agricultural, doctor
The multiple fields such as, environmental protection, principal mode include: nuclear energy power generation, isotopic radiation processing, nuclear detection, nuclear electron with
And isotopic tagging etc..
Irradiation processing is the principal mode of non-powered nuclear technology peaceful use and the main shape of nuclear technology civil nature
Formula.Radiotechnology plays increasingly important role in China's economic development, safe diet, the drug safety of it and people
It is closely bound up with the healthy livings problem such as enhancement of environment, for society public medical and health cause and improve people's health level and do
Positive contribution is gone out.Radiotechnology service is known as " green processing industry " and " this century rising industry ", by the Ministry of Science and Technology
It is classified as one of the nine big new high-tech industries of state key development.
Irradiation processing industry in China's has preferable technical foundation.In recent ten years, under the influence of reforming and opening up to the outside world overall situation,
Industrialization process development is very fast, is increased every year with 20% speed.It is protected in material science, life science, bioengineering, environment
Shield, nutrition, medical science, electronic engineering, aerospace, geology, petrochemical industry etc. have obtained important achievement.Therefore spoke
It penetrates processing technology and is breaking through traditional application pattern, to Environment Science and production range infiltration, form many new application necks
Domain.However, compared with developed countries compared with the irradiation processing industry gap in China is obvious, and mainly product variety is few, industry size
Small, many important industry fields still belong to blank, and discomfort is in response to the market demand.Domestic small-sized irradiation instrument market is mainly with X-ray at present
Based on irradiation instrument and radiated by gamma-ray instrument, the overwhelming majority is the U.S., Canada and German imported product.And based in californium 252
There are no Related products on the market for the small-sized irradiation devices of component, but the relevant units such as such as army medical university and nuclear submarine, anxious
Related experiment of the biological living under neutron irradiation need to be carried out, therefore need to carry out low dose of neutron irradiation application study.
Summary of the invention
In order to fill up both at home and abroad in the research blank of low dose of neutron irradiation application aspect, the present invention provides one kind to be based on
The small-sized irradiation devices of californium 252 neutron source, the present invention is directed to for laboratory provide a kind of small neutron irradiation devices for environment,
The fields such as medical treatment, bioengineering, without carrying out irradiation experiment dependent on large-scale accelerator neutron generator or pile neutron source.With
The latter compares, and apparatus of the present invention are using more flexible, cost is lower, in small animal living body dosage experiments, biologic medical, material, ring
There is larger demand in border, national defence etc..
The present invention is achieved through the following technical solutions:
A kind of small-sized irradiation devices based on californium 252 neutron source, the irradiation devices include radioactive source, radiation source movements control
Unit, irradiation cup, irradiation cup motion control unit, controller and host computer；Wherein, the radioactive source is californium 252 neutron source, by
Straight reciprocating motion is done in the radiation source movements control unit driving along the vertical direction；The irradiation cup is for placing object to be irradiated
And can expose to the open air in radioactive source radiation field, the irradiation cup motion control unit controls the irradiation cup uniform rotation；
The radiation source movements control unit and irradiation cup motion control unit carry out data and communication connection, the control with controller
Device processed and host computer carry out data and communication connection.
The present invention realizes neutron rediation device miniaturization using californium 252 neutron source, while passing through host computer management software,
Realize the accurate control of each control unit；The present invention has filled up the blank in low dose of neutron irradiation application aspect, Neng Gouzuo
The necessary complement irradiated for accelerator neutron generator and pile neutron source.
Preferably, which further includes protection body and protection body motion control unit；The protection body is set to spoke
According to the outside of cup, and can be rotated under the control of protection body motion control unit；When normal work, the protection body movement control
Unit control protection body rotation processed makes to irradiate cup side close to radioactive source；At the end of irradiation, the protection body motion control unit
Control protection body rotation makes to irradiate cup side far from radioactive source, can pick and place object to be irradiated from irradiation cup.The present invention is further
Protective device is designed, is placed or taken out object to be irradiated from irradiation cup convenient for operator, while protecting the safety of operator.
Preferably, which further includes detection unit, and the detection unit and controller carry out data and communication link
It connects；The detection unit includes field dose monitoring unit and radioactive source activity detection unit；The field dose monitoring unit
Neutron and gamma dosage for the real-time monitoring irradiation devices surface；The radioactive source activity detection unit is used for real-time monitoring
Radioactive source activity.Detection unit is further arranged in the present invention, for device dose of radiation and radiation source activity carry out it is accurate
Real-time monitoring and control, the safety of effective protection equipment and operator simultaneously improves irradiation dose and accurately controls.
Preferably, which further includes battery power supply unit and alarm unit, the battery power supply unit and alarm
Unit carries out data and communication connection with the controller.The present invention further devises battery power supply unit and alarm is single
Member, wherein battery power supply unit avoids uncontrollable mistake for powering under the emergency cases such as failure or power-off as backup power source
Accidentally occur；The alarm unit is used to carry out warning note to failure or mistake.
Preferably, the radiation source movements control unit includes that driving mechanism, transmission mechanism, photoelectric encoder and limit are opened
It closes；The radioactive source is mounted on transmission mechanism, and the driving mechanism is connect with the controller, controls institute by the controller
It states driving mechanism and drives the transmission mechanism movement, and then drive the straight reciprocating motion of the radioactive source realization vertical direction；
The photoelectric encoder and limit switch are connect with the controller respectively, and the photoelectric encoder is used to detect the reality of radioactive source
When position；The limit switch is used to control the range of radiation source movements.
Preferably, the driving mechanism is uniform rectilinear's motor, the transmission mechanism using linear screw nut body or
Person's guiding rail mechanism.
Preferably, the irradiation cup motion control unit includes driving mechanism and rotating mechanism；The irradiation cup is mounted on
On the rotating mechanism, the driving mechanism is connect with the controller, is controlled it by the controller and is driven the rotating machine
Structure, and then drive the irradiation cup uniform rotation.
Preferably, the controller uses PLC control module, realizes signal acquisition, signal processing and signal transmission.
Preferably, which further includes output equipment, and the output equipment is connect with the host computer.
Preferably, the output equipment is printer, and the host computer is industrial personal computer, and the host computer provides man-machine friendship
Mutually, the data processing, transmission and control of entire irradiation devices are realized；The printer is for printing irradiance data report.
The present invention has the advantage that and the utility model has the advantages that
1, the present invention realizes neutron rediation device miniaturization using californium 252 neutron source, by motor driver and soft
Part control, realizes the precision of irradiation time and dosage.The present invention in low dose of neutron irradiation application aspect by filling up
Domestic blank, the necessary complement that can be irradiated as accelerator neutron generator and pile neutron source.
2, the present invention uniformly realizes the control of each control unit and the acquisition of signal, processing and biography by controller
It is defeated；The accurate real-time detection and control that can be realized the parameters such as irradiation time and irradiation dose, improve irradiation precision can
Control property.
3, the present invention can both guarantee the exploitativeness of device, while improving safety by said structure design.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is system principle diagram of the invention.
Fig. 2 is the device of the invention structure top view.
Fig. 3 is the working principle of the invention flow diagram.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment 1
A kind of small-sized irradiation devices based on californium 252 neutron source, as illustrated in fig. 1 and 2, which includes: radioactive source
1, radiation source movements control unit, irradiation cup 2, irradiation cup motion control unit, controller and host computer；Wherein, the radiation
Source 1 is californium 252 neutron source, does straight reciprocating motion along the vertical direction by radiation source movements control unit driving；The spoke
According to cup 2 for placing object to be irradiated and can expose to the open air in radioactive source radiation field, the irradiation cup motion control unit control
Make 2 uniform rotation of irradiation cup；The radiation source movements control unit and irradiation cup motion control unit and controller into
Row data and communication connection, the controller and host computer carry out data and communication connection.
In the irradiation devices of the present embodiment, the relative positional relationship of radioactive source 1 and irradiation cup 2: wherein irradiating cup can be by
It at the uniform velocity rotating clockwise or counterclockwise, revolving speed can be arranged by calibrating procedure, and such as 20 rpms；And neutron radiation source is then perpendicular
Histogram is circulated up reciprocating motion, and movement velocity can be adjusted as required, be such as set as 20 millimeters it is per second；Radiation source movements
Stroke can be set according to the height of irradiation cup, and such as 198 millimeters.It, must in order to guarantee to irradiate the uniformity of each dose point in cup
Control must be programmed to the moving line of neutron radioactive source, such as when radioactive source stops the 20% of the cycle of operation in least significant end
Between, then at the uniform velocity reach vertex stop the cycle of operation 20% time, then at the uniform velocity reach minimum point start the cycle over, and move it is total when
Between by wish to reach irradiation integral dose value and radioactive source activity conversion from.
In the present embodiment, which further includes protection body 3 and protection body motion control unit；The protection body 3 is set
It is placed in the outside of irradiation cup 2, and can be rotated under the control of protection body motion control unit；When normal work, the protection
The control rotation of protection body 3 of body motion control unit makes to irradiate cup side close to radioactive source 1, so that object to be irradiated is in radiation field
It is interior；At the end of irradiation, the protection body motion control unit control rotation of protection body 3 makes to irradiate cup side far from radioactive source 1, just
In irradiation cup 2 in pick and place object to be irradiated.In the present embodiment, the irradiation cup 2 and 3 integrated design of protection body, such as Fig. 2 institute
Show, the protection body 3 is that cylindrical structure side removes part-structure for accommodating the irradiation formation of cup 2, which can be even
Speed rotation (protection body 3 is static), while the protection body 3 is able to drive the irradiation cup 2 and rotates together；When working properly,
Cup 2 is irradiated close to radioactive source side, protection body 3 is in irradiation cup 2 in Neutron Radiation Field far from radioactive source side；When
Moving cell control protection body rotates 180 degree at the end of irradiation, makes protection body close to radioactive source side, irradiation cup is put separate
The side She Yuan (Fig. 2 show the position view after irradiation), i.e. irradiation cup are no longer in Neutron Radiation Field, were both convenient for
Operator is placed or taken out object to be irradiated from irradiation cup, while protecting the safety of operator.
In the present embodiment, irradiation cup motion control unit includes driving mechanism A and rotating mechanism；The irradiation cup 2 is installed
On the rotating mechanism, the driving mechanism A is connect with the controller, is controlled it by the controller and is driven the rotation
Mechanism, and then drive the irradiation cup uniform rotation.Irradiation cup 2 in the present embodiment is stainless steel barrel, and driving mechanism A is using electricity
Machine, rotating mechanism use rotation axis, 2 uniform rotation of irradiation cup are driven by controller control motor driven rotation axis, to protect
Demonstrate,prove homogeneous radiation.
In the present embodiment, which further includes detection unit, and the detection unit and controller carry out data and lead to
Letter connection；The detection unit includes field dose monitoring unit and radioactive source activity detection unit；The field dose monitoring
Unit is used for the neutron and gamma dosage on the real-time monitoring irradiation devices surface；The radioactive source activity detection unit is for real-time
Monitor radioactive source activity.In the present embodiment, field dose monitoring unit is using thermal-neutron detector and gamma detector acquisition dress
The neutron and gamma dosage on surface are set, and is transferred to controller and is handled, processing result is straight by combined aural and visual alarm
It shows with seeing, and links with upper computer software, once exceed safety standard limit value starting protection program immediately, it can be effective
Guarantee equipment and operator's safety.Since the effective half-life of californium 252 neutron source is 2.65, decay is very fast, is unfavorable for spoke
It is accurately controlled according to dosage.Using neutron source radiation activity real-time detection, the method energy effective compensation radioactive source fed back to control software declines
Become, keeps irradiation dose control precision higher.
In the present embodiment, which further includes battery power supply unit and alarm unit, the battery power supply unit and
Alarm unit carries out data and communication connection with the controller.Since the equipment safety of the present embodiment requires height, so
Power pack has also been devised UPS battery power supply and a key shuts down function in addition to 220 volts of power supplies under normal circumstances, once external supply
The unexpected shutdown of electricity will automatically switch to battery supply power supply, and after executing the current irradiation task of completion, then automatically exit from journey
Sequence shutdown avoids uncontrollable mistake in this way and occurs.
In the present embodiment, the radiation source movements control unit include driving mechanism B, transmission mechanism, photoelectric encoder and
Limit switch；The radioactive source 1 is mounted on transmission mechanism, and the driving mechanism B is connect with the controller, by the control
Device controls the driving mechanism B and drives the transmission mechanism movement, and then drives the straight line of the radioactive source realization vertical direction
It moves back and forth；The photoelectric encoder and limit switch are connect with the controller respectively, and the photoelectric encoder is for detecting
The real time position of radioactive source；The limit switch is used to control the range of radiation source movements.It is driven described in the present embodiment
Mechanism B is uniform rectilinear's motor, and the transmission mechanism uses linear screw nut body (or guiding rail mechanism)；It is described to put
It penetrates source to be mounted on by nut in vertically-mounted linear screw, linear screw rotation is driven by motor, to be put described in driving
The source of penetrating pumps, and limit switch is provided in the highest point minimum point of linear screw, for controlling radiation source movements
Range.The real time position of radioactive source is determined by the output signal of photoelectric encoder, can pass through host computer programming Control
The path of neutron source, for example the regular hour is stopped in certain point, the dosage thus conveniently realized in neutron ray field is equal
Even property.
In the present embodiment, the controller is PLC control module, and using west gate submodule unit, function includes: to electricity
Machine drive module sends control signal, the starting of control stepper motor, stopping and revolving speed；Acquire 1024 line high precision photoelectric encoders
Output signal, the position and speed information in Real-time Feedback neutron radiation source and irradiation cup；24 volts of ups power controls of direct current；Dosage
The thermal-neutron detector of detection module is counted to be counted with gamma-ray detector；Alarm or state instruction working properly；With industry control
Machine is communicated using CAN bus.
In the present embodiment, the host computer is industrial personal computer, and the host computer provides human-computer interaction, realizes entire irradiation devices
Data processing, transmission and control；Industrial personal computer runs upper computer software, and user can carry out parameter setting by software interface,
Control flow is irradiated, irradiance data report is printed.Upper computer software boots up self-test first, detects motor initial position, if
Source positions starting point, battery voltage detection are set, the functions such as external power supply detection and dose measurement meet if all there is no problem
It is expected that the irradiation process for then starting to execute user's selection starts to work normally；If exporting relevant information not over self-test
Prompt is further continued for carrying out after excluding dependent failure.
As shown in figure 3, the specific workflow of the irradiation devices of the present embodiment is as follows:
After powering on booting, software systems carry out self-test first, and process is as follows: the voltage detecting of battery, external power supply
Judgement detection, first charges if battery capacity is low, reaches 23 volts of voltage of booting and is switched on again later, if without external power supply
It cannot be switched on；It, can be true by the limit switch signal of extreme position by the position initialization of motor after software is smoothly switched on
Determine neutron radiation source and irradiate the relative positional relationship of cup, is then initialised to operating position；Apparatus surface dose measurement, it is ensured that
Operator's safety carries out in next step otherwise interrupt operation if dosage is without departing from standard and alarms；Door is opened to irradiate
It is put into object to be irradiated in cup, object to be irradiated and irradiation cup coding is read in, closes door；Irradiation process is called in, setting needs to irradiate
Integral dose start to irradiate, motor will start to act, and display starts to feed back relevant parameter and countdown；It is opened after the completion of irradiation
Dynamic printing reports are started from, next circulation can be started again after taking out object to be irradiated.
In the present embodiment, which further includes output equipment, such as printer, the output equipment with it is described upper
Machine connection, for printing irradiance data report.
The present embodiment controls vertical motion or rotation using stepper motor, issues control instruction to motor by PLC
Driver can control electric motor starting, stopping or revolving speed.1024 line high precision photoelectrics coding is connected on the output shaft of motor
Device, output signal access PLC control module and count, and can be obtained by motor movement stroke or revolving speed by conversion, realize
The closed-loop control of motor.In the motion control in neutron radiation source, first in industrial personal computer software be arranged highest point, minimum point,
Then stroke, speed, halt, dwell time parameter are stored in dose calibration program, sent parameter by CAN bus
PLC control module is given, moves neutron radiation source according to setup parameter.
In the irradiation devices of the present embodiment, the energy of one side radioactive source is higher, and safeguard structure is complex；On the other hand
It is close from device when being staff's operation, it is necessary to ensure radiation safety according to relevant national standard.The protection of neutron is mainly thought
Road is using weight or heavier substance, and making neutron energy quickly by inelastic scattering reduces and nuclear first excitation energy
The corresponding energy of grade is hereinafter, recycling hydrogenous material, makes neutron energy be further decreased to thermal energy range and inhaled by elastic scattering
It receives.Use Boron-containing-PE and boracic paraffin as neutron slowing-down material in the device of that embodiment of the invention, outermost layer uses lead
Cylinder shielding gamma ray.It is mounted with that 3 slow neutron detector of helium measures neutron dose rate in the outer surface of device, is mounted with simultaneously
NaI crystal gamma detector measures gamma dose rate, and PLC is sent into the output pulse of detector and is counted, and judges current agent
Whether dose rate is in the limit value of national regulation, if Normal Alarm device shows green light, otherwise alarm shows that red light is concurrently spoken
Sound warning note operator takes care.
The irradiation devices of the present embodiment further include that shielding main body 4 and mounting bracket 5, the shielding main body 4 are mounted on installation
On bracket 5, above-mentioned radioactive source 1, irradiation cup 2 and protection body 3 are arranged in shielding main body 4, further increase irradiation safety, have
Effect guarantees the safety of operator.
Embodiment 2
Accurately dose calibration is the key that guarantee that apparatus of the present invention complete accurate neutron irradiation dosage, before the device is to be used
Or it requires to carry out scale to the present apparatus after a period of use.The irradiation devices that the present embodiment proposes above-described embodiment 1 into
Rower is fixed, and the present embodiment is demarcated using alanine tablet, and specific implementation process is as follows:
Clear water is filled in the irradiation cup of stainless steel first, alanine tablet is placed on to the plastics of sealing according to certain intervals
It forms a line in pipe, altogether two column；A column tablet is put in the centre bit of irradiation cup, edge placement puts another column tablet；In work
Calibration program is run in control machine, adjustable neutron radiation source irradiates cup and at the uniform velocity rotate always in the residence time of halt；Spoke
According to after, the parameters such as irradiation time, temperature are recorded, and alanine tablet is saved according to spatial position sequence.Alanine
Tablet can produce the stabilized radical with dose proportional, concentration available electron spin resonance device after being irradiated
(ESR) it measures, can thus measure irradiation dose and by neutron irradiation dosage spatial distribution map in Software Create irradiation cup；By anti-
The moving line of the whole neutron source of polyphony carries out Calibration Experiment, may finally determine the equally distributed best side of neutron field in irradiation cup
Case.In normal work, it is only necessary to integral dose target value is inputted in irradiation process, software systems can be living according to neutron
Degree detection detector data, which converses, needs irradiation time and automatic work.Pass through embodiment 2, it is determined that one group therein best
Parameter are as follows: neutron radiation source is stopped 6.6 seconds in minimum point, then traveled at the uniform speed with 20 millimeters of speed per second to highest point, most
High point is traveled at the uniform speed with 20 millimeters of speed per second to minimum point again after stopping 6.6 seconds, is constantly recycled；Between minimum point and highest point
Distance is 198 millimeters, irradiates cup with 20 rpms of uniform rotation, dosage distribution is most uniform in irradiation cup at this time, i.e. alanine
The difference of the maxima and minima of tablet measurement is minimum.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (10)
1. a kind of small-sized irradiation devices based on californium 252 neutron source, which is characterized in that the irradiation devices include radioactive source, radiation
Source movement control unit, irradiation cup, irradiation cup motion control unit, controller and host computer；Wherein, the radioactive source is californium
252 neutron sources do straight reciprocating motion by radiation source movements control unit driving along the vertical direction；The irradiation cup is used for
It places object to be irradiated and can expose to the open air in radioactive source radiation field, the irradiation cup motion control unit controls the irradiation
Cup uniform rotation；The radiation source movements control unit and irradiation cup motion control unit carry out data and communication with controller
Connection, the controller and host computer carry out data and communication connection.
2. a kind of small-sized irradiation devices based on californium 252 neutron source according to claim 1, which is characterized in that the irradiation
Device further includes protection body and protection body motion control unit；The protection body is set to the outside of irradiation cup, and can be anti-
It is rotated under the control of watch box motion control unit；When normal work, the protection body motion control unit control protection body rotation
Make to irradiate cup side close to radioactive source；At the end of irradiation, the protection body motion control unit control protection body rotation makes to irradiate
Cup side can pick and place object to be irradiated from irradiation cup far from radioactive source.
3. a kind of small-sized irradiation devices based on californium 252 neutron source according to claim 1, which is characterized in that the irradiation
Device further includes detection unit, and the detection unit and controller carry out data and communication connection；The detection unit includes table
Face dosage monitoring unit and radioactive source activity detection unit；The field dose monitoring unit is used for the real-time monitoring irradiation devices
The neutron and gamma dosage on surface；The radioactive source activity detection unit is used for real-time monitoring radioactive source activity.
4. a kind of small-sized irradiation devices based on californium 252 neutron source according to claim 1, which is characterized in that the irradiation
Device further includes battery power supply unit and alarm unit, and the battery power supply unit and alarm unit are carried out with the controller
Data and communication connection.
5. a kind of small-sized irradiation devices based on californium 252 neutron source according to claim 1-4, feature exist
In the radiation source movements control unit includes driving mechanism, transmission mechanism, photoelectric encoder and limit switch；The radiation
Source is mounted on transmission mechanism, and the driving mechanism is connect with the controller, controls the driving mechanism by the controller
It drives the transmission mechanism to move, and then drives the straight reciprocating motion of the radioactive source realization vertical direction；The photoelectricity is compiled
Code device and limit switch are connect with the controller respectively, and the photoelectric encoder is used to detect the real time position of radioactive source；Institute
Limit switch is stated for controlling the range of radiation source movements.
6. a kind of small-sized irradiation devices based on californium 252 neutron source according to claim 5, which is characterized in that the drive
Motivation structure is uniform rectilinear's motor, and the transmission mechanism uses linear screw nut body or guiding rail mechanism.
7. a kind of small-sized irradiation devices based on californium 252 neutron source according to claim 1-4, feature exist
In the irradiation cup motion control unit includes driving mechanism and rotating mechanism；The irradiation cup is mounted on the rotating mechanism
On, the driving mechanism is connect with the controller, is controlled it by the controller and is driven the rotating mechanism, and then drives institute
State irradiation cup uniform rotation.
8. a kind of small-sized irradiation devices based on californium 252 neutron source according to claim 1-4, feature exist
In the controller uses PLC control module, realizes signal acquisition, signal processing and signal transmission.
9. a kind of small-sized irradiation devices based on californium 252 neutron source according to claim 1-4, feature exist
In the irradiation devices further include output equipment, and the output equipment is connect with the host computer.
10. a kind of small-sized irradiation devices based on californium 252 neutron source according to claim 9, which is characterized in that described defeated
Equipment is printer out, and the host computer is industrial personal computer, and the host computer provides human-computer interaction, realizes the number of entire irradiation devices
According to processing, transmission and control；The printer is for printing irradiance data report.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308538A (en) * | 2020-03-11 | 2020-06-19 | 江苏超敏科技有限公司 | Detection equipment for simulating radiation environment of space station to damage human body |
| CN111399027A (en) * | 2020-03-11 | 2020-07-10 | 江苏超敏科技有限公司 | Radiation mechanism capable of realizing variable azimuth irradiation and radiation system comprising radiation mechanism |
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| CN111308538B (en) * | 2020-03-11 | 2022-03-18 | 江苏超敏科技有限公司 | Detection equipment for simulating radiation environment of space station to damage human body |
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