CN109849238B - Radioactive waste resin grinding system with redundant device - Google Patents
Radioactive waste resin grinding system with redundant device Download PDFInfo
- Publication number
- CN109849238B CN109849238B CN201910245784.7A CN201910245784A CN109849238B CN 109849238 B CN109849238 B CN 109849238B CN 201910245784 A CN201910245784 A CN 201910245784A CN 109849238 B CN109849238 B CN 109849238B
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- isolation valve
- pipeline
- pump
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- buffer tank
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- 238000000227 grinding Methods 0.000 title claims abstract description 92
- 239000011347 resin Substances 0.000 title claims abstract description 53
- 229920005989 resin Polymers 0.000 title claims abstract description 53
- 239000002901 radioactive waste Substances 0.000 title claims abstract description 25
- 238000002955 isolation Methods 0.000 claims abstract description 193
- 239000002699 waste material Substances 0.000 abstract description 33
- 230000002285 radioactive effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Abstract
The invention belongs to the field of treatment of radioactive three wastes of nuclear power stations, and particularly discloses a radioactive waste resin grinding system with a redundancy device, which comprises a buffer tank A, a pump A, an isolation valve A, a grinder A, a buffer tank B, a pump B, an isolation valve B, a grinder B, a plurality of isolation valves and pipelines between the buffer tank A and the pump A, a plurality of isolation valves and pipelines between the pump A and the isolation valve A, a plurality of isolation valves and pipelines between the buffer tank B and the pump B, and a plurality of isolation valves and pipelines between the pump B and the isolation valve B; the buffer tank A is communicated with the grinder A, and the grinder A is communicated with the isolation valve A; the buffer tank B is communicated with the grinder B, and the grinder B is communicated with the isolation valve B. The system can ensure that when the two series grinding devices lose grinding and conveying capacity and waste resin cannot be ground normally, the waste resin which is not ground completely is led into the normal series from the fault series through the redundant device so as to finish grinding the waste resin continuously.
Description
Technical Field
The invention belongs to the field of treatment of three radioactive wastes in a nuclear power station, and particularly relates to a radioactive waste resin grinding system capable of realizing mutual inversion of radioactive waste resin in two sets of mutually independent grinding systems.
Background
To minimize the radioactive waste, the volume of radioactive waste resin is reduced, and a nuclear power plant builds a radioactive waste treatment center and introduces a thermal super compression technique to treat the radioactive waste resin generated by the unit.
The thermal super compression technology has a complex process flow and comprises a plurality of procedures of receiving, metering, grinding, drying, compressing and the like of radioactive waste resin. In order to ensure the processing capacity of the radioactive waste processing center and meet the production requirement, the radioactive waste processing center is provided with two sets of grinding devices (A series grinding devices and B series grinding devices) which are independent from each other in design and are used for grinding waste resin respectively. The mixture of the upstream waste resin particles and desalted water enters into a buffer tank of an A-series grinding device or a B-series grinding device respectively according to a certain proportion, after the waste resin buffer tank reaches a set liquid level, a resin circulating pump is started, and the waste resin is discharged from the buffer tank, sequentially passes through the circulating pump and a grinder and returns to the buffer tank, so that the waste resin is circularly reciprocated until the grinding is completed.
According to the original design, the two sets of devices are arranged, on one hand, the two sets of devices can be simultaneously used in the treatment peak period to ensure the treatment capacity of the radioactive waste resin in the radioactive waste treatment center; on the other hand, in order to realize the standby of the devices, when one set of grinding devices fails under the normal working condition, the other set of devices can be started, so that the normal production activity is ensured. However, the design does not take into consideration the conditions of sudden failure of the grinder or sudden failure of the circulating pump when the grinding process is performed, and at this time, the waste resin which is not ground can not be effectively led out of the series, because the radioactive waste resin which is not ground can not be discharged to the downstream system, the radiation level of the waste resin is very high, if the waste resin is led out of the system through temporary measures such as disassembling pipelines, the waste resin is time-consuming and labor-consuming, a large amount of unnecessary radiation irradiation can be caused to personnel, and importantly, the system can not be maintained in time, and the normal production of a factory building is delayed, so that important safety hazards exist for personnel safety, equipment safety and production safety.
Disclosure of Invention
The invention aims to provide a radioactive waste resin grinding system with a redundant device, which can ensure that when two series of grinding devices lose grinding and conveying capacity due to equipment failure, power failure and other reasons, waste resin cannot be normally ground to finish the normal production of a factory building, the waste resin which is not ground is led into the normal series from the failure series through the redundant device so as to continuously finish grinding the waste resin.
The technical scheme for realizing the purpose of the invention comprises the following steps: a radioactive waste resin grinding system with a redundant device, the system comprising a buffer tank a, a pump a, an isolation valve a, a grinder a, a buffer tank B, a pump B, an isolation valve B, a grinder B, and a plurality of isolation valves and lines between the buffer tank a and the pump a, a plurality of isolation valves and lines between the pump a and the isolation valve a, a plurality of isolation valves and lines between the buffer tank B and the pump B, and a plurality of isolation valves and lines between the pump B and the isolation valve B; the buffer tank A is communicated with the grinder A, and the grinder A is communicated with the isolation valve A; the buffer tank B is communicated with the grinder B, and the grinder B is communicated with the isolation valve B.
And a first isolation valve and a second isolation valve are arranged on a pipeline between the buffer tank A and the pump A.
And a third isolation valve and a fourth isolation valve are arranged on a pipeline between the pump A and the isolation valve A.
And a pipeline between the buffer tank B and the pump B is provided with a ninth isolation valve and a seventh isolation valve.
And a sixth isolation valve and a tenth isolation valve are arranged on a pipeline between the pump B and the isolation valve B.
The buffer tank A is communicated with the first isolation valve, the pump A is communicated with the second isolation valve and the third isolation valve, and the isolation valve A is communicated with the fourth isolation valve; the buffer tank B is communicated with a ninth isolation valve, the pump B is communicated with a seventh isolation valve and a sixth isolation valve, and the isolation valve B is communicated with a tenth isolation valve.
And a fourth pipeline is arranged on the pipeline between the first isolation valve and the second isolation valve (2), and the fourth pipeline is communicated with the eighth isolation valve.
The eighth isolation valve is communicated with a third pipeline, and the third pipeline is communicated with pipelines between the ninth isolation valve and the seventh isolation valve.
And a first pipeline is arranged on a pipeline between the third isolation valve and the fourth isolation valve, and the first pipeline is communicated with the fifth isolation valve.
The fifth isolation valve is communicated with a second pipeline, and the second pipeline is communicated with the pipeline between the inlets of the sixth isolation valve and the tenth isolation valve.
The beneficial technical effects of the invention are as follows: (1) And a pipeline is led out of the inlet and outlet pipelines of the circulating pump (circulating pump a) of the A-series grinding device and is respectively connected to the inlet and outlet pipelines of the circulating pump (circulating pump B) of the B-series grinding device. The valves are respectively arranged on the leading-out pipelines, and are additionally arranged at the front and the back of the leading-out points on the inlet pipeline and the outlet pipeline of the two circulating pumps at the same time, so as to control the communication and the isolation of the waste resin during the grinding, realize the mutual tilting of the waste resin between the two series and finally finish the grinding of the waste resin.
(2) When the grinding machine of one of the A-series grinding device or the B-series grinding device fails, the waste resin can be led into the normal series from the failure series through the mutual inversion device, so that the waste resin can be ensured to be continuously ground, and the residual waste resin in the failure series can be timely and safely discharged, thereby being convenient for the maintenance of the failure series;
(3) When the circulating pump of one of the A-series grinding device or the B-series grinding device fails, the waste resin can be led into the normal series from the failure series through the mutual-conductance redundancy device, so that the waste resin can be discharged timely and safely while the waste resin is continuously ground, the maintenance of the failure series is facilitated, and the operation reliability of the system is improved.
(4) When the grinding machine of the A-series grinding device fails and the circulating pump of the B-series grinding device fails at the same time, closed circulating grinding of the waste resin from the buffer tank to the circulating pump of the A-series grinding device to the grinding machine of the B-series grinding device to the buffer tank can be realized through the mutual inverted redundancy device; similarly, when the circulating pump of the A-series grinding device and the grinding machine of the B-series grinding device simultaneously fail, the circulating grinding of waste resin can be realized through the redundant device, so that the reliability of the system is greatly improved, and even if the working condition is changeable and complex, the normal and safe operation of the system can be ensured to the greatest extent, and the normal production is ensured.
(4) By closing the isolation valve when both series are operating normally, the independence of both series is not affected at all.
Drawings
Fig. 1 is a schematic structural diagram of a radioactive waste resin grinding system with a redundant device according to the present invention.
In the figure: 1. a first isolation valve; 2. a second isolation valve; 3. a third isolation valve; 4. a fourth isolation valve; 5. a first pipeline; 6. a fifth isolation valve; 7. a second pipeline; 8. a sixth isolation valve; 9. a seventh isolation valve; 10. a third pipeline; 11. an eighth isolation valve; 12. a fourth pipeline; 13. a ninth isolation valve; 14. a tenth isolation valve; 15. a cache tank A;16. a pump A;17. an isolation valve A;18. a grinder A;19. a cache tank B;20. a pump B;21. an isolation valve B;22. grinder B.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples.
As shown in fig. 1, the radioactive waste resin grinding system with the redundancy device provided by the invention comprises a buffer tank a15, a pump a16, an isolation valve a17, a grinder a18, a buffer tank B19, a pump B20, an isolation valve B21, a grinder B22, and a first isolation valve 1, a second isolation valve 2, a third isolation valve 3, a fourth isolation valve 4, a fifth isolation valve 6, a sixth isolation valve 8, a seventh isolation valve 9, a ninth isolation valve 13, a tenth isolation valve 14, a first pipeline 5, a second pipeline 7, a third pipeline 10 and a fourth pipeline 12.
As shown in fig. 1, the return port of the buffer tank a15 is in communication with the outlet of the grinder a18 through a line, and the inlet of the grinder a18 is in communication with the outlet of the isolation valve a17 through a line. A first isolation valve 1 is arranged on a pipeline between the outlet of the buffer tank A15 and the inlet of the pump A16; a second isolation valve 2 is arranged on a pipeline between the outlet of the first isolation valve 1 and the inlet of the pump A16; a fourth isolation valve 4 is arranged on the pipeline between the outlet of the pump A16 and the inlet of the isolation valve A17; a third isolation valve 3 is provided in the line between the inlet of the fourth isolation valve 4 and the outlet of the pump a 16. The inlet of the isolation valve A17 and the outlet of the fourth isolation valve 4 are communicated with the outlet of the A-series grinding device through a pipeline, and a stop valve is arranged on the pipeline.
The reflux port of the buffer tank B19 is communicated with the outlet of the grinder B22 through a pipeline, and the inlet of the grinder B22 is communicated with the outlet of the isolation valve B21 through a pipeline. A ninth isolation valve 13 is arranged on a pipeline between the outlet of the buffer tank B19 and the inlet of the pump B20; a seventh isolation valve 9 is arranged on the pipeline between the outlet of the ninth isolation valve 13 and the inlet of the pump B20; a tenth isolation valve 14 is provided in the line between the outlet of the pump B20 and the inlet of the isolation valve B21; a sixth isolation valve 8 is provided in the line between the inlet of the tenth isolation valve 14 and the outlet of the pump B20. The inlet of the isolation valve B21 and the outlet of the tenth isolation valve 14 are communicated with the outlet of the B-series grinding device through a pipeline, and a stop valve is arranged on the pipeline.
A fourth pipeline 12 is arranged on a pipeline between the outlet of the first isolation valve 1 and the inlet of the second isolation valve 2, the outlet of the fourth pipeline 12 is communicated with the inlet of the eighth isolation valve 11, the outlet of the eighth isolation valve 11 is communicated with the inlet of the third pipeline 10, and the outlet of the third pipeline 10 is communicated with a pipeline between the outlet of the ninth isolation valve 13 and the inlet of the seventh isolation valve 9.
A first pipeline 5 is arranged on a pipeline between the outlet of the third isolation valve 3 and the inlet of the fourth isolation valve 4, the outlet of the first pipeline 5 is communicated with the inlet of the fifth isolation valve 6, the outlet of the fifth isolation valve 6 is communicated with the inlet of the second pipeline 7, and the outlet of the second pipeline 7 is communicated with a pipeline between the outlet of the sixth isolation valve 8 and the inlet of the tenth isolation valve 14.
The pipeline and the isolation valve are made of the same materials as those of the A-series grinding device and the B-series grinding device, and static corrosion caused by different materials is prevented.
As shown in fig. 1, the working process of the radioactive waste resin grinding system with the redundant device provided by the invention is as follows:
when the A-series grinding device and the B-series grinding device can normally operate, the fifth isolation valve 6 and the eighth isolation valve 11 can be closed, and the A-series grinding device and the B-series grinding device are completely separated at the moment, so that the independence of the system and the equipment is not affected as the design working condition is the same.
When the grinding machine A18 of the A-series grinding device loses the grinding capacity due to failure and the grinding process of the radioactive waste resin is half carried out, residual unground resin in the A-series grinding device is completely introduced into the buffer tank B19 of the B-series grinding device through the circulating pump A16 by opening the first isolation valve 1, the second isolation valve 2, the third isolation valve 3, the fifth isolation valve 6, the tenth isolation valve 14, the isolation valve B21 and closing the fourth isolation valve 4 and the sixth isolation valve 8, then the fifth isolation valve 6 and the eighth isolation valve 11 are closed, the B-series grinding device is started to finish the continuous grinding of the waste resin, meanwhile, the radioactive waste resin is timely emptied due to the A-series grinding device, the radiation level is reduced, the system is timely maintained, the normal and safe production activities are ensured, and the irradiated dose of maintenance personnel is reduced. The grinding machine B22 of the B series grinding device is the same as the grinding machine B22 loses the grinding ability due to the failure.
When the transmission capacity of the circulating pump A16 of the A-series grinding device is lost, the process is stopped when the radioactive waste resin grinding process is half carried out, the first isolation valve 1, the eighth isolation valve 11, the seventh isolation valve 9, the sixth isolation valve 8, the fifth isolation valve 6 and the fourth isolation valve 4 are opened, the second isolation valve 2 and the third isolation valve 3 are closed, then the circulating pump B20 of the B-series grinding device is started to replace the circulating pump A16 of the A-series grinding device, the waste resin of the A-series grinding device is continuously ground, the waste resin is ensured to be timely ground and discharged downstream, the normal operation of the system is ensured, the timely emptying system is beneficial to maintenance and reduction of the irradiated dose of workers, and the circulating pump B20 of the B-series grinding device is identical when the transmission capacity of the B-series grinding device is lost due to the failure.
When both grinding apparatuses are not available due to simultaneous failure of the grinder a18 of the a-series grinding apparatus and the circulation pump B20 of the B-series grinding apparatus, a complete closed loop cycle can be formed by opening the ninth isolation valve 13, the eighth isolation valve 11, the second isolation valve 2, the third isolation valve 3, the fifth isolation valve 6, the tenth isolation valve 14, the isolation valve B21 and closing the first isolation valve 1, the fourth isolation valve 4, the sixth isolation valve 8, the seventh isolation valve 9, and then starting the circulation pump a16 and the grinder B22, and the waste resin sequentially passes through the buffer tank B19 of the B-series grinding apparatus, the circulation pump a16, the grinder B22, and finally returns to the buffer tank B19 of the B-series grinding apparatus. If the waste resin which is not ground is stored in the buffer tank A15 of the A-series grinding device at this time, the first isolation valve 1, the second isolation valve 2, the third isolation valve 3, the fifth isolation valve 6, the tenth isolation valve 14, the isolation valve B21 and the eighth isolation valve 11, the fourth isolation valve 4 and the sixth isolation valve 8 can be opened, the residual waste resin in the buffer tank A15 of the A-series grinding device is poured into the buffer tank B19 of the B-series grinding device, and then grinding is continued according to the flow.
The same applies when the circulation pump a16 of the series a grinding device and the grinder B22 of the series B grinding device are simultaneously malfunctioning.
The present invention has been described in detail with reference to the drawings and the embodiments, but the present invention is not limited to the embodiments described above, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention. The invention may be practiced otherwise than as specifically described.
Claims (1)
1. A radioactive waste resin grinding system having a redundant apparatus, characterized in that: the system includes an a-series grinding apparatus and a B-series grinding apparatus, wherein: the A-series grinding device comprises a cache tank A (15), a pump A (16), an isolation valve A (17) and a grinder A (18), and the B-series grinding device comprises a cache tank B (19), a pump B (20), an isolation valve B (21) and a grinder B (22); and comprising isolation valves and lines between the buffer tank a (15) and the pump a (16), and between the pump a (16) and the isolation valve a (17); isolation valves and lines between buffer tank B (19) and pump B (20), isolation valves and lines between pump B (20) and isolation valve B (21); the buffer tank A (15) is communicated with the grinder A (18), and the grinder A (18) is communicated with the isolation valve A (17); the buffer tank B (19) is communicated with the grinder B (22), and the grinder B (22) is communicated with the isolation valve B (21); a first isolation valve (1) and a second isolation valve (2) are arranged on a pipeline between the buffer tank A (15) and the pump A (16); a third isolation valve (3) and a fourth isolation valve (4) are arranged on a pipeline between the pump A (16) and the isolation valve A (17); a pipeline between the buffer tank B (19) and the pump B (20) is provided with a ninth isolation valve (13) and a seventh isolation valve (9); a sixth isolation valve (8) and a tenth isolation valve (14) are arranged on a pipeline between the pump B (20) and the isolation valve B (21); the inlet of the isolation valve B (21) and the outlet of the tenth isolation valve (14) are communicated with the outlet of the B series grinding device through a pipeline, and a stop valve is arranged on the pipeline; the buffer tank A (15) is communicated with the first isolation valve (1), the pump A (16) is communicated with the second isolation valve (2) and the third isolation valve (3), the inlet of the isolation valve A (17) and the outlet of the fourth isolation valve (4) are communicated with the outlets of the A-series grinding devices through pipelines, and the pipelines are provided with stop valves; the buffer tank B (19) is communicated with the ninth isolation valve (13), the pump B (20) is communicated with the seventh isolation valve (9) and the sixth isolation valve (8), and the isolation valve B (21) is communicated with the tenth isolation valve (14); a fourth pipeline (12) is arranged on a pipeline between the first isolation valve (1) and the second isolation valve (2), and the fourth pipeline (12) is communicated with the eighth isolation valve (11); the eighth isolation valve (11) is communicated with a third pipeline (10), and the third pipeline (10) is communicated with pipelines between the ninth isolation valve (13) and the seventh isolation valve (9); a first pipeline (5) is arranged on a pipeline between the third isolation valve (3) and the fourth isolation valve (4), and the first pipeline (5) is communicated with a fifth isolation valve (6); the fifth isolation valve (6) is communicated with a second pipeline (7), and the second pipeline (7) is communicated with the pipeline between the inlets of the sixth isolation valve (8) and the tenth isolation valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910245784.7A CN109849238B (en) | 2019-03-28 | 2019-03-28 | Radioactive waste resin grinding system with redundant device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910245784.7A CN109849238B (en) | 2019-03-28 | 2019-03-28 | Radioactive waste resin grinding system with redundant device |
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| Publication Number | Publication Date |
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| CN109849238A CN109849238A (en) | 2019-06-07 |
| CN109849238B true CN109849238B (en) | 2024-05-10 |
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| CN109166642A (en) * | 2018-10-17 | 2019-01-08 | 深圳中广核工程设计有限公司 | Nuclear power station radioactive liquid waste organic matter treating apparatus |
| CN210590079U (en) * | 2019-03-28 | 2020-05-22 | 江苏核电有限公司 | Radioactive waste resin grinding system with redundant device |
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