CN211319751U - Washing unit of radioactive spent resin transmission system - Google Patents
Washing unit of radioactive spent resin transmission system Download PDFInfo
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- CN211319751U CN211319751U CN201921751125.2U CN201921751125U CN211319751U CN 211319751 U CN211319751 U CN 211319751U CN 201921751125 U CN201921751125 U CN 201921751125U CN 211319751 U CN211319751 U CN 211319751U
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- demineralized water
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Abstract
The patent of the utility model belongs to the field of machinery, concretely relates to useless resin transmission system's of radioactivity washing unit. The utility model comprises a resin filter bed negative bed, a resin filter bed positive bed and a resin filter bed mixed bed which are connected in parallel and then connected with a waste resin receiving tank through a waste resin receiving tank inlet valve; the resin filter bed shadow bed is connected by a conduit to the resin filter bed outlet valve a and by a resin unloading line, a resin transfer line is connected to one end of the waste resin receiving tank inlet valve. The utility model discloses a setting and the control of automatic control procedure realize washing transmission line, avoid the resin uninstallation in-process to cause transmission line's jam, solve the remaining problem of useless resin in the transmission line.
Description
Technical Field
The patent of the utility model belongs to the field of machinery, concretely relates to useless resin transmission system's of radioactivity washing unit.
Background
Ion exchange is a main means for purifying radioactive process wastewater in a nuclear power plant, and reactor loop cooling water, spent fuel storage pool water and process wastewater in the nuclear power plant are subjected to purification treatment by using ion exchange resin; during ion exchange, when the resin bed reaches its saturated exchange capacity, exceeds a defined radiation level or fails, has completed a predetermined task, etc., causing the resin to be no longer used, the resin will be unloaded and then further treated, prepared and disposed of as spent resin. The resin in the resin bed is backflushed by utilizing desalted water during resin unloading, and then the resin is conveyed to the waste resin receiving tank through a pipeline, partial resin can be gradually detained in the conveying pipeline in the conveying process, and under the condition that a plurality of resin beds share the conveying pipeline, when one resin bed unloads the resin, the waste resin is conveyed to the other resin conveying pipeline to be detained, so that the conveying pipeline can be blocked, meanwhile, the waste resin of the resin bed is enriched with radioactive nuclide, the radioactivity ratio of the waste resin is higher, the radiation level is higher, the field radiation level can be increased, and the exposure dose of field workers can be increased.
Disclosure of Invention
The purpose is as follows:
according to the invention, by designing the flushing device of the radioactive waste resin transmission system, the flushing pipeline and the valve are additionally arranged on the unloading pipeline of the resin bed, and the flushing of the transmission pipeline is realized through the setting and the control of an automatic control program, so that the blockage of the transmission pipeline in the resin unloading process is avoided, and the problem of the residue of the waste resin in the transmission pipeline is solved.
The technical scheme is as follows:
a washing device of a radioactive waste resin transmission system is characterized in that a resin filter bed negative bed, a resin filter bed positive bed and a resin filter bed mixed bed are connected in parallel and then are connected with a waste resin receiving tank through a waste resin receiving tank inlet valve; the resin filter bed shadow bed is connected by a conduit to the resin filter bed outlet valve a and by a resin unloading line, a resin transfer line is connected to one end of the waste resin receiving tank inlet valve.
Resin filter bed outlet valve A below set up the demineralized water pipeline, demineralized water inlet valve one end is connected the salt solution entry, pipeline A is washed in demineralized water connection of one end, the demineralized water washing pipeline A other end links to each other with flushometer A, the flushometer A other end is washed pipeline B and resin filter bed outlet valve A below pipeline through demineralized water and is linked to each other.
The resin filter bed anode bed is connected with the resin filter bed outlet valve B through a pipeline and is connected with one end of an inlet valve of the waste resin receiving tank through a resin transmission pipeline, and the other end of the inlet valve of the waste resin receiving tank is connected with the waste resin receiving tank.
The resin filtering bed mixed bed is connected with the outlet valve C of the resin filtering bed and one end of the inlet valve of the waste resin receiving tank through a pipeline, and the other end of the inlet valve of the waste resin receiving tank is connected with the waste resin receiving tank.
Resin filter bed outlet valve B below set up the demineralized water pipeline, demineralized water inlet valve one end is connected the salt solution entry, pipeline C is washed in demineralized water connection to one end, the pipeline C other end is washed in demineralized water and flushometer B links to each other, the flushometer B other end is washed pipeline D and resin filter bed outlet valve B below pipeline through demineralized water and is linked to each other.
Resin filter bed outlet valve C below set up the demineralized water pipeline, demineralized water inlet valve one end is connected the salt solution entry, pipeline E is washed in demineralized water connection to one end, the demineralized water washing pipeline E other end links to each other with flushometer C, the flushometer C other end is washed pipeline F and resin filter bed outlet valve C below pipeline through demineralized water and is linked to each other.
The joint of the resin unloading pipeline and the resin transmission pipeline adopts Y star connection, and the turning radius of the pipeline is more than 5 times of the pipeline radius.
Has the advantages that:
according to the invention, by designing the flushing device of the radioactive waste resin transmission system, the resin transmission pipeline is flushed through the operation during the operation of the system, the problem of pipeline blockage during the resin transmission is effectively prevented, and the reliability of the system operation is improved.
According to the invention, by designing the flushing device of the radioactive waste resin transmission system, the residual and deposition of the radioactive resin in the resin transmission pipeline are prevented, the radiation level of an operation site is greatly reduced, the irradiated dose of workers can be effectively reduced, and the optimal principle of radiation protection is met.
Drawings
FIG. 1 is a schematic flow chart of the "flushing device for radioactive waste resin delivery system" in the present invention.
In the figure: 1: a resin filter bed shadow bed; 2: resin filter bed positive bed; 3: a resin filter bed mixed bed; 4: an outlet valve A of the resin filter bed; 5: an outlet valve B of the resin filter bed; 6: an outlet valve C of the resin filter bed; 7: an inlet valve of a waste resin receiving tank; 8: a waste resin receiving tank; 9: a resin unloading line; 10: a resin transfer line. 11: a demineralized water inlet valve; 12: washing the pipeline A by demineralized water; 13: a flush valve A; 14: washing the pipeline B by demineralized water; 15: washing the pipeline C by demineralized water; 16: a flush valve B; 17: washing the pipeline D with desalted water; 18: the pipeline E is washed by desalted water; 19: a flush valve C; 20: demineralized water rinses line F.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the demineralized water of the device comes from a factory building demineralized water system pipe network, a demineralized water inlet valve 11 is connected with the demineralized water system pipe network and is connected with a flushing valve a13 and a flushing valve B16 through a demineralized water flushing pipeline a12 and a demineralized water flushing pipeline C15, a flushing valve a13 is connected with a resin filter bed outlet valve a4 through a demineralized water flushing pipeline B14, a demineralized water flushing pipeline C15 is connected with a flushing valve B16 and a demineralized water flushing pipeline E18, a flushing valve B16 is connected with a demineralized water flushing pipeline D17 and a resin filter bed outlet valve B5, a demineralized water flushing pipeline E18 is connected with a flushing valve C19, and a flushing valve C19 is connected with a demineralized water flushing pipeline F20, a resin filter bed outlet valve C6 and a waste resin receiving tank inlet valve 7.
The demineralized water flushing pipeline B14, the demineralized water flushing pipeline D17 and the demineralized water flushing pipeline F20 designed by the invention are short and close to the resin filter bed outlet valve A4, the resin filter bed outlet valve B5 and the resin filter bed outlet valve C6, the resin unloading pipeline 9 and the resin conveying pipeline 10 are as short as possible, the pipeline connection positions are connected by adopting Y stars, and the turning radius of the pipeline is more than 5 times of the pipeline radius.
The control of the related valve related to the invention realizes the automatic flushing function of the pipeline through the setting and control of an automatic control program.
As shown in the figure, the working process of the flushing device of the radioactive waste resin conveying system provided by the invention is as follows:
1. setting all valves in the system to be in a closed state (initial state);
2. when the resin in the resin filtering bed mixed bed 3 reaches the saturated exchange capacity or is not used any more due to the failure of the resin and the like, opening the resin filtering bed outlet valve 6 and the waste resin receiving tank inlet valve 7, unloading the resin in the resin filtering bed mixed bed 3 to the waste resin receiving tank 8, and simultaneously returning part of the resin to the resin unloading pipeline 9 and the resin conveying pipeline 10 for retention in the conveying process;
3. after the resin in the resin bed 3 is unloaded, closing the outlet valve C6 of the resin filter bed, then opening the inlet valve 11 of the demineralized water, the flushing valve A13, the flushing valve B16 and the flushing valve C19, flushing the resin unloading pipeline 9 and the resin conveying pipeline 10 by the demineralized water, and flushing the resin remained in the resin unloading pipeline 9 and the resin conveying pipeline 10 into the waste resin receiving groove 8;
4. after washing for a certain time, closing the demineralized water inlet valve 11, the flushing valve A13, the flushing valve B16, the flushing valve C19 and the waste resin receiving tank inlet valve 7, and finishing the unloading work of the resin in the resin filter bed mixed bed 3;
5. similarly, when the resin in the resin filter bed anode bed 2 reaches the saturated exchange capacity or is not used any more due to the failure of the resin and the like, the outlet valve 5 of the resin filter bed and the inlet valve 7 of the waste resin receiving tank are opened, the resin in the resin filter bed anode bed 2 is unloaded to the waste resin receiving tank 8, meanwhile, part of the resin flows back to the resin unloading pipeline 9 in the transmission process, and part of the resin stays in the resin transmission pipeline 10;
6. after the resin in the resin bed 2 is unloaded, closing the outlet valve 5 of the resin filter bed, opening the inlet valve 11 of the desalted water, the flushing valve A13, the flushing valve B16 and the flushing valve C19, flushing the resin unloading pipeline 9 and the resin conveying pipeline 10 by the desalted water, and flushing the resin remained in the resin unloading pipeline 9 and the resin conveying pipeline 10 to the waste resin receiving tank 8;
7. after the washing is carried out for a certain time, the demineralized water inlet valve 11, the washing valve A13, the washing valve B16, the washing valve C19 and the waste resin receiving tank inlet valve 7 are closed, and the unloading work of the resin in the resin filter bed anode bed 2 is finished;
8. similarly, when the resin in the resin filter bed anion bed 1 reaches the saturated exchange capacity or is not used any more due to the failure of the resin and the like, the outlet valve 4 of the resin filter bed and the inlet valve 7 of the waste resin receiving tank are opened, the resin in the resin filter bed anion bed 1 is unloaded to the waste resin receiving tank 8, and meanwhile, part of the resin is retained in the resin unloading pipeline 9 and the resin transmission pipeline 10;
9. after unloading the resin in the resin filter bed shadow bed 1, closing the outlet valve A4 of the resin filter bed, then opening the inlet valve 11 of the desalted water, the flushing valve A13, the flushing valve B16 and the flushing valve C19, flushing the resin unloading pipeline 9 and the resin conveying pipeline 10 by the desalted water, and flushing the resin remained in the resin unloading pipeline 9 and the resin conveying pipeline 10 into the waste resin receiving tank 8;
after the flushing for a certain time, the demineralized water inlet valve 11, the flushing valve A13, the flushing valve B16, the flushing valve C19 and the waste resin receiving tank inlet valve 7 are closed, and the resin unloading work in the resin filter bed shadow bed 1 is finished.
Claims (7)
1. A washing unit of radioactive spent resin transfer system which is characterized in that: the resin filtering bed negative bed (1), the resin filtering bed positive bed (2) and the resin filtering bed mixed bed (3) are connected in parallel and then are connected with a waste resin receiving tank (8) through a waste resin receiving tank inlet valve (7); the resin filter bed shadow bed (1) is connected with a resin filter bed outlet valve A (4) through a pipeline, and is connected with one end of a waste resin receiving tank inlet valve (7) through a resin unloading pipeline (9) and a resin transmission pipeline (10).
2. The apparatus for flushing a radioactive spent resin transfer system as recited in claim 1, wherein: resin filter bed outlet valve A (4) below set up the demineralized water pipeline, demineralized water inlet valve (11) one end is connected the salt solution entry, pipeline A (12) are washed in the demineralized water is connected to one end, pipeline A (12) other end and flushometer A (13) are washed in the demineralized water and are linked to each other, pipeline B (14) are washed through the demineralized water to the flushometer A (13) other end and resin filter bed outlet valve A (4) below pipeline links to each other.
3. The apparatus for flushing a radioactive spent resin transfer system as recited in claim 1, wherein: the resin filter bed anode bed (2) is connected with a resin filter bed outlet valve B (5) through a pipeline and is connected with one end of a waste resin receiving tank inlet valve (7) through a resin transmission pipeline (10), and the other end of the waste resin receiving tank inlet valve (7) is connected with a waste resin receiving tank (8).
4. The apparatus for flushing a radioactive spent resin transfer system as recited in claim 1, wherein: the resin filtering bed mixed bed (3) is connected with one end of a resin filtering bed outlet valve C (6) and one end of a waste resin receiving tank inlet valve (7) through a pipeline, and the other end of the waste resin receiving tank inlet valve (7) is connected with a waste resin receiving tank (8).
5. A radioactive waste resin delivery system flushing device according to claim 3, wherein: resin filter bed outlet valve B (5) below set up the demineralized water pipeline, demineralized water inlet valve (11) one end is connected the salt solution entry, pipeline C (15) are washed in the demineralized water is connected to one end, pipeline C (15) other end and flushometer B (16) are washed in the demineralized water and are linked to each other, pipeline D (17) and resin filter bed outlet valve B (5) below pipeline are washed through demineralized water to the flushometer B (16) other end and are linked to each other.
6. The apparatus for flushing a radioactive waste resin delivery system as set forth in claim 4, wherein: resin filter bed outlet valve C (6) below set up the demineralized water pipeline, demineralized water inlet valve (11) one end is connected the salt solution entry, pipeline E (18) are washed in the demineralized water is connected to one end, pipeline E (18) other end and flushometer C (19) link to each other are washed in the demineralized water, pipeline F (20) and resin filter bed outlet valve C (6) below pipeline link to each other are washed through demineralized water to the flushometer C (19) other end.
7. The apparatus for flushing a radioactive spent resin transfer system as recited in claim 1, wherein: the joint of the resin unloading pipeline (9) and the resin transmission pipeline (10) adopts a Y star connection, and the turning radius of the pipeline is more than 5 times of the radius of the pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921751125.2U CN211319751U (en) | 2019-10-17 | 2019-10-17 | Washing unit of radioactive spent resin transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921751125.2U CN211319751U (en) | 2019-10-17 | 2019-10-17 | Washing unit of radioactive spent resin transmission system |
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| CN211319751U true CN211319751U (en) | 2020-08-21 |
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| CN201921751125.2U Active CN211319751U (en) | 2019-10-17 | 2019-10-17 | Washing unit of radioactive spent resin transmission system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112133465A (en) * | 2020-09-23 | 2020-12-25 | 中国核动力研究设计院 | Radioactive waste resin recovery system and method |
| CN112992395A (en) * | 2021-03-11 | 2021-06-18 | 三门核电有限公司 | Nuclear power plant radioactive waste resin transfer system and method |
-
2019
- 2019-10-17 CN CN201921751125.2U patent/CN211319751U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112133465A (en) * | 2020-09-23 | 2020-12-25 | 中国核动力研究设计院 | Radioactive waste resin recovery system and method |
| CN112133465B (en) * | 2020-09-23 | 2022-02-11 | 中国核动力研究设计院 | Radioactive waste resin recovery system and method |
| CN112992395A (en) * | 2021-03-11 | 2021-06-18 | 三门核电有限公司 | Nuclear power plant radioactive waste resin transfer system and method |
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Effective date of registration: 20210909 Address after: 355100 7th and 8th floors, No. 280, Longshou Road, Songcheng street, Xiapu County, Ningde City, Fujian Province Patentee after: Zhonghe Longyuan Technology Co.,Ltd. Patentee after: CNNC XIAPU NUCLEAR POWER Co.,Ltd. Address before: 355100 Qinchi Cultural Park, No.56, Chian Avenue, Xiapu County, Ningde City, Fujian Province Patentee before: CNNC XIAPU NUCLEAR POWER Co.,Ltd. |