CN207731139U - It is prepared for reactor125The intermittent cyclic circuit automation control device of I - Google Patents
It is prepared for reactor125The intermittent cyclic circuit automation control device of I Download PDFInfo
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- CN207731139U CN207731139U CN201721767350.6U CN201721767350U CN207731139U CN 207731139 U CN207731139 U CN 207731139U CN 201721767350 U CN201721767350 U CN 201721767350U CN 207731139 U CN207731139 U CN 207731139U
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Abstract
The utility model belongs to the preparation field of radionuclide, discloses a kind of for reactor preparation125The intermittent cyclic circuit automation control device of I, the device include：Bottle is irradiated, decay bottle, and the decay bottle is connected by main pipeline with irradiation bottle；It is characterized in that, being equipped with vacuum pressure sensor in heap, solenoid valve and programmable logic controller (PLC) in heap on the main pipeline for irradiating bottle between the bottle that decays.The utility model introduces PLC module remote control reactor irradiation production125I, the variation by monitoring pressure make production process realize semi-automation, the control of pressure high precision and high sensitivity may be implemented, keep system operation safer with the valve in pond in modular operation control heap.
Description
Technical field
The utility model belongs to the preparation field of radionuclide, and in particular to one kind is prepared for reactor125Between I
It has a rest circulation loop automatic control device.
Background technology
125I is a kind of half-life period longer (T1/2=59.7 days) iodine radioisotope, pass through electronics capture release low energy
Gamma-rays (27KeV, X-ray).Due to125I half-life period is longer, and energy of γ ray is low, no β-Radiation, therefore in clinical nuclear medicine
It is used widely in terms of diagnosis, biomedical research and tumour close-range treatment (X-ray seed source).
It is prepared using intermittent cyclic loop method125The method of I, is applied well in production practice.But it is existing
Intermittent circulation loop device exists when unexpected operating mode occurs for reactor, cannot automatically adjust the irradiation pressure in the bottle, be easy out
Now the leakage of irradiation bottle causes the risk of radioactive pollution, therefore designs and develops one kind and can either complete production requirement and can take notice of again
Under outer operating mode prepared by the reactor of auto-adjustment control125The intermittent cyclic circuit automation control device of I is just highly desirable
.
Invention content
(1) purpose of innovation and creation
In order to overcome the deficiencies of the prior art, the utility model provides a kind of a kind of safe and reliable, automation control use
It is prepared in reactor125The intermittent cyclic circuit automation control device of I.
(2) technical solution
One kind is prepared for reactor125The intermittent cyclic circuit automation control device of I, the device include：
Bottle is irradiated, decay bottle, and the decay bottle is connected by main pipeline with irradiation bottle；It is characterized in that, irradiation bottle with
Main pipeline between decay bottle is equipped with vacuum pressure sensor in heap, solenoid valve and programmable logic controller (PLC) in heap.Supervisor
Xenon storage bottle, tail gas clean-up bottle, stock bottle and molecular pump are also associated on road.
Pressure gauge, pressure sensor and vacuum meter are equipped on main pipeline between decay bottle and xenon storage bottle, in original
Expect that bottle is equipped with pressure gauge with main pipeline junction；Decay bottle, xenon storage bottle, tail gas clean-up bottle are cased with cold-trap outside.
In addition to irradiation bottle is placed on core section, remaining equipment of the intermittent cyclic circuit automation control device
It is all positioned in except reaction reator body.
The number of decay bottle is 1~4.
The PLC programmable logic controller (PLC)s include CPU, Analog input mModule, controller.
The decay bottle being connected respectively with main pipeline is 4.
The tail gas clean-up bottle being connected with main pipeline is 3, is connected between each other.
(3) advantageous effect
The utility model introduces PLC module remote control reactor irradiation production125I, the variation by monitoring pressure are used
Modular operation controls the valve in pond in heap, and production process is made to realize semi-automation.With following
Advantageous effect：
In routinely producing,124The conversion of Xe gases is frequent, increases the risk of leakage, automatic control device may be implemented to press
The control of power high precision and high sensitivity keeps system operation safer.
The screening of component considers reliability and applicability, and support personnel's remote operation can minimize radiation
Injury of the dosage to operating personnel.
Description of the drawings
Fig. 1 is being prepared for reactor for one embodiment according to the present utility model125The intermittent cyclic circuit of I is automatic
Change control device schematic diagram.
Fig. 2 is PLC (programmable logic controller (PLC)) control structure figure of one embodiment according to the present utility model.
Fig. 3 is PLC (programmable logic controller (PLC)) control flow chart of one embodiment according to the present utility model.
Solenoid valve 4,7,10,13,19,22,29,30,32,34 in 3 heap of vacuum pressure sensor in 1 irradiation 2 heap of bottle in figure
6,9,12,15,21,24,26,28 cold-trap 16 of the decay bottle of bellows valve 5,8,11,14,31 pressure gauge, 17 pressure sensor, 18 vacuum
Count 20 23,25,27 tail gas clean-up bottle of xenon storage bottle, 33 stock bottle, 35 molecular pump 36PLC programmable logic controller (PLC)s 37CPU 38
39 controller of Analog input mModule
Specific implementation mode
125The preparation of I is to utilize reactor Thermal Neutron Irradiation124Xe is obtained125Xe decays generate125I.Its nuclear reaction is：
1, in-pile irradiation nuclear reaction
2, out-pile decay nuclear reaction
It is prepared using intermittent cyclic loop method125I nucleic is to establish the metal vacuum that one is completely closed in reactor to follow
Loop back path system, using gas target mode, irradiation124It is prepared by the xenon that Xe contents are 20%125I.It prepares125The intermittent cyclic of I is returned
Road includes：In-pile irradiation part and out-pile circulation and stress part.Basic principle is to use124The raw material xenon that the content of Xe is 20%
Gas is filled in irradiation bottle, allow raw material xenon core section internal irradiation after a certain period of time, by xenon (including the spoke after irradiation
According to generation125Xe) all recycling is transferred in the decay bottle of the collection other than core section.It waits for125Xe is decayed into125After I,
Raw material xenon is subjected to cycle irradiation back into heap again.After the completion of circulate operation, takes collection decay bottle away, return laboratory recycling125I。
Fig. 1 is being prepared for reactor for one embodiment according to the present utility model125The intermittent cyclic circuit of I is automatic
Change the schematic diagram of control device.As shown in Figure 1, being prepared for reactor125The intermittent cyclic circuit automation control device packet of I
Irradiation bottle 1 is included, decay bottle is connected by main pipeline with irradiation bottle 1, and the number for the bottle that decays can be 1~4, according to reactor
The time of characteristic and required decay determines.Using 4 decay bottles 5,8,11,14 in the present embodiment, in irradiation bottle 1 and decay bottle
Between main pipeline be equipped with vacuum pressure sensor 2 in heap, solenoid valve 3 and PLC programmable logic controller (PLC)s 36 in heap.Supervisor
Road is connected with xenon storage bottle 20, tail gas clean-up bottle, stock bottle 33, molecular pump 35 in turn.Tail gas clean-up bottle in the present embodiment
23,25,27 be 3 series connection.Decay bottle 5,8,11,14 and xenon storage bottle 20 between main pipeline on be equipped with pressure gauge 16,
Pressure sensor 17 and vacuum meter 18.It is equipped with pressure gauge 31 in stock bottle 33 and main pipeline junction, is in stock bottle 33124Xe
Content be 20% xenon (load rated safety pressure).Decay bottle 5,8,11,14, xenon storage bottle 20, tail gas clean-up bottle 23,
25,27 it is cased with cold-trap outside.In addition to irradiation bottle 1 is placed on core section, remaining all devices is all positioned in reactor sheet
Except body, and it is connected by main pipeline.
As shown in Fig. 2, PLC programmable logic controller (PLC)s 36 include CPU 37, Analog input mModule 38, controller 39.
Fig. 3 is PLC control flow charts.
Referring to Fig. 1-Fig. 3,125The specific production process of I includes：
1.125It is prepared by the production of I
First turn on molecular pump 35, open 34,30,22,3 evacuation system of valve successively, reach the vacuum degree 6 of requirement~
After 8Pa, valve 22,30,34 is closed, closes molecular pump 35.Valve 32,29 is opened, rated pressure is filled with to in-pile irradiation bottle 1
's124The raw material xenon that Xe contents are 20%.Valve 3,29,32 is closed successively.
After irradiation 24 hours, valve 3,4 is opened successively, and the xenon after 1 irradiation in irradiation bottle is transferred in decay bottle 5.It closes
Valve closing door 4 waits in the xenon after decay 5 internal irradiation of bottle125Xe is decayed into125I, separation125I is right125I carries out recycling preparation, point
It is irradiated back into heap from rear xenon.Using others decay bottle, carry out successively125The irradiation of I prepares cycle operation.
2. irradiating pressure in the bottle control
The irradiation pressure in the bottle is made of automatic vacuum pressure sensor 2, PLC Programmable logical controllers 36 and solenoid valve 3
Change control device and complete control, specific workflow is as follows：
(1) required xenon amount is calculated according to production requirement, safety critical pressure limit is as PLC moulds in setting irradiation bottle
Quasi- initialization input quantity.
(2) by vacuum pressure sensor 2, collection in worksite irradiates pressure signal in bottle 1 at any time.Vacuum pressure sensor 2 will
Pressure signal in collected irradiation bottle 1 is converted into the analog input control module that current signal passes to PLC.
(3) pressure value in irradiation bottle 1 is calculated by PLC program, judges actual pressure value and setup pressure value at any time
Size.
(4) when actual pressure value is more than setup pressure value, valve 3 is opened in PLC outputs.
(5) when actual pressure value is less than setup pressure value, valve 3 is closed in PLC outputs.
The embodiments of the present invention introduce PLC module remote control reactor irradiation production125I, by monitoring pressure
Variation makes production process realize semi-automation with the valve in pond in modular operation control heap.It has the advantages that：
In routinely producing,124The conversion of Xe gases is frequent, increases the risk of leakage, automatic control device may be implemented to press
The control of power high precision and high sensitivity keeps system operation safer.
The screening of component considers reliability and applicability, and support personnel's remote operation can minimize radiation
Injury of the dosage to operating personnel.
The foregoing is merely the example embodiments of the disclosure, not to limit the disclosure, all spirit in the disclosure and
Within principle, any modification, equivalent replacement, improvement and so on should be included within the protection domain of the disclosure.
Claims (9)
1. one kind is prepared for reactor125The intermittent cyclic circuit automation control device of I, the device include：
Bottle (1) is irradiated, decay bottle, and the decay bottle is connected by main pipeline with irradiation bottle (1)；It is characterized in that, in irradiation bottle
(1) main pipeline between decay bottle is equipped with vacuum pressure sensor (2) in heap, solenoid valve (3) and programmable logic in heap
Controller (36).
2. a kind of according to claim 1 prepare for reactor125The intermittent cyclic circuit automation control device of I, it is special
Sign is, xenon storage bottle (20), tail gas clean-up bottle, stock bottle (33) and molecular pump (35) are also associated on main pipeline.
3. a kind of according to claim 2 prepare for reactor125The intermittent cyclic circuit automation control device of I, it is special
Sign is, pressure gauge, pressure sensor (17) and vacuum are equipped on the main pipeline between decay bottle and xenon storage bottle (20)
It counts (18), pressure gauge is equipped in stock bottle (33) and main pipeline junction.
4. a kind of described in any one according to claims 1 to 3 prepare for reactor125The intermittent cyclic circuit automation of I
Control device, which is characterized in that decay bottle, xenon storage bottle (20), tail gas clean-up bottle are cased with cold-trap outside.
5. a kind of according to claim 1 prepare for reactor125The intermittent cyclic circuit automation control device of I, it is special
Sign is that, in addition to irradiation bottle (1) is placed on core section, remaining of the intermittent cyclic circuit automation control device is set
It is standby to be all positioned in except reaction reator body.
6. a kind of according to claim 1 prepare for reactor125The intermittent cyclic circuit automation control device of I, it is special
Sign is that the number for the bottle that decays is 1~4.
7. a kind of according to claim 1 prepare for reactor125The intermittent cyclic circuit automation control device of I, it is special
Sign is that the programmable logic controller (PLC) (36) includes CPU (37), Analog input mModule (38), controller (39).
8. a kind of according to claim 1 prepare for reactor125The intermittent cyclic circuit automation control device of I, it is special
Sign is that the decay bottle (5,8,11,14) being connected respectively with main pipeline is 4.
9. a kind of according to claim 1 prepare for reactor125The intermittent cyclic circuit automation control device of I, it is special
Sign is that the tail gas clean-up bottle (23,25,27) being connected with main pipeline is 3, is connected between each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721767350.6U CN207731139U (en) | 2017-12-18 | 2017-12-18 | It is prepared for reactor125The intermittent cyclic circuit automation control device of I |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721767350.6U CN207731139U (en) | 2017-12-18 | 2017-12-18 | It is prepared for reactor125The intermittent cyclic circuit automation control device of I |
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| Publication Number | Publication Date |
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| CN207731139U true CN207731139U (en) | 2018-08-14 |
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| CN201721767350.6U Active CN207731139U (en) | 2017-12-18 | 2017-12-18 | It is prepared for reactor125The intermittent cyclic circuit automation control device of I |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110648779A (en) * | 2019-07-04 | 2020-01-03 | 中国原子能科学研究院 | Circulation loop for preparing I-125 by reactor irradiation |
| CN111370154A (en) * | 2020-03-23 | 2020-07-03 | 中国原子能科学研究院 | Device for producing isotopes |
-
2017
- 2017-12-18 CN CN201721767350.6U patent/CN207731139U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110648779A (en) * | 2019-07-04 | 2020-01-03 | 中国原子能科学研究院 | Circulation loop for preparing I-125 by reactor irradiation |
| CN111370154A (en) * | 2020-03-23 | 2020-07-03 | 中国原子能科学研究院 | Device for producing isotopes |
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