CN205282114U - Nuclear power station movable main pump impeller radioactive decontamination device - Google Patents
Nuclear power station movable main pump impeller radioactive decontamination device Download PDFInfo
- Publication number
- CN205282114U CN205282114U CN201520977668.1U CN201520977668U CN205282114U CN 205282114 U CN205282114 U CN 205282114U CN 201520977668 U CN201520977668 U CN 201520977668U CN 205282114 U CN205282114 U CN 205282114U
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- decontamination
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- dispensing box
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Abstract
The utility model belongs to the technical field of nuclear power station main pump radioactive decontamination handles, concretely relates to nuclear power station movable main pump impeller radioactive decontamination device. The utility model discloses a decontamination liquid configuration module A, decontamination configuration module B, demineralized water system, decontamination liquid configuration module A and demineralized water system pass through the hose connection, and decontamination liquid configuration module A and decontamination configuration module B pass through the hose connection to the transmission decontamination liquid. The utility model discloses reduce decontamination operating personnel intensity of labour, practice thrift the decontamination time, provide clean effect and detersive efficiency.
Description
Technical field
The utility model belongs to nuclear power station main pump radioactive decontamination processing technology field, is specifically related to a kind of Nuclear power plants packaged type main pump impeller decontamination facility.
Background technology
Main pump is also called reactor coolant pump, is one of the key equipment of Nuclear power plants, is the equipment that reactor coolant system high speed rotates, for the Main Coolant driving high temperature, high pressure, radioactive level very high. General according to main pump maintenance technique specification book requirement, within main pump operation certain time, tackle main pump carry out Disintegration overhaul. Owing to the parts long period of soaking such as impeller of main pump is in the refrigerant of master loop, when carrying out Disintegration overhaul, the risk of external radiation exposure and contamination is all very high; In order to reduce the irradiation dose of maintenance personnel, main pump impeller need to be carried out decontamination.
Nuclear power plants two unit designs in gulf, field have a set of public 1FKK40 main pump impeller decontamination system to carry out decontamination for main pump impeller, this system is positioned at auxiliary factory building and uses conventional oxidation reducing process means that parts are carried out decontamination, use steam heats, there is length heat-up time (the separate unit decontamination time was at 16 hours), internal loose pollute the problems such as removal effect is not obvious, it can not meet main pump impeller decontamination enforcement on the spot in addition, will affect maintenance duration when there is multiple stage time main pump maintenance operation task.
Summary of the invention
The technical problem that the utility model solves: a kind of Nuclear power plants packaged type main pump impeller decontamination facility is provided, reduces decontamination labor intensity of operating staff, save the decontamination time, it is provided that clean effect and detersive efficiency.
The technical solution adopted in the utility model:
A kind of Nuclear power plants packaged type main pump impeller decontamination facility, comprise decontamination liquid configuration module A, decontamination configuration module B, DW system demineralized water system, decontamination liquid configuration module A and DW system demineralized water system are by hose connection, decontamination liquid configuration module A and decontamination configuration module B is by hose connection, and transmits decontamination liquid.
Described decontamination liquid configuration module A comprises water intake valve, stirring rake one, dispensing box one, well heater one, transfer valve, transferpump, upflow tube one, exhaust-valve one, dosing vacuum breaker;
Described decontamination configuration module B comprises intake pipe, decontamination pit top cover, decontamination pit, upflow tube two, liquidometer, thermometer, well heater three, decontamination pit exhaust-valve, well heater exhaust-valve, ultrasonic generator, recycle valve, recycle pump, decontamination liquid vacuum breaker, safety valve.
The one end at described dispensing box top is connected with DW system demineralized water system, it is provided with water intake valve in the middle of dispensing box one and DW system demineralized water system, stirring rake one and well heater one it is provided with in dispensing box one, the other end at dispensing box one top passes through upflow tube one with hose connection, one end bottom dispensing box one is connected with upflow tube one by exhaust-valve, and the other end bottom dispensing box one is connected with one of them port of transfer valve, transferpump, dosing vacuum breaker in turn; A port in addition for dosing vacuum breaker is connected with upflow tube one, the one end at dispensing box two top, decontamination pit respectively, stirring rake two and well heater two it is provided with in dispensing box two, the other end at dispensing box two top is connected with one end of exhaust-valve two, and the other end of exhaust-valve two is connected with DW system demineralized water system; One end bottom dispensing box two is connected with upflow tube one, and centre is provided with exhaust-valve three, and the other end bottom dispensing box two is connected with decontamination pit;
Decontamination pit upper end is provided with decontamination pit top cover, decontamination pit is connected with intake pipe, decontamination pit connects the two ends of upflow tube two, upflow tube two is provided with decontamination pit exhaust-valve, decontamination pit is also connected with liquidometer and thermometer, ultrasonic generator it is provided with in decontamination pit, decontamination pit is connected with one end of well heater three, other three ends of well heater three are connected to well heater exhaust-valve, one end of safety valve and one end of decontamination liquid vacuum breaker, the other end of decontamination liquid vacuum breaker and one end of recycle pump, the other end of recycle pump is connected with one end of recycle valve, the other end of safety valve is connected on upflow tube two, the other end of recycle valve is connected on the pipeline that safety valve is connected with upflow tube two.
The beneficial effects of the utility model:
(1) a kind of Nuclear power plants packaged type main pump impeller decontamination facility that the utility model provides, provide clean effect and detersive efficiency, provide the tolerance range of decontamination concentration, reduce and cause, owing to chemical reagent proportioning is unreasonable, the risk that main pump impeller body corrodes;
(2) a kind of Nuclear power plants packaged type main pump impeller decontamination facility that the utility model provides, saves the decontamination time, reduces the dosage of main pump maintenance personnel and ensures the main pump repair time;
(3) a kind of Nuclear power plants packaged type main pump impeller decontamination facility that the utility model provides, the accessibility of mobility and operation, greatly reduce the labour intensity of decontamination operator, main pump impeller decontamination requirement on the spot can not only be met, moreover it is possible to meet the decontamination of other large-size parts at any time.
Accompanying drawing explanation
A kind of Nuclear power plants packaged type main pump impeller decontamination facility system schematic that Fig. 1 provides for the utility model;
In figure: 1-water intake valve, 2-stirring rake one, 3-dispensing box one, 4-well heater one, 5-transfer valve, 6-transferpump, 7-upflow tube one, 8-exhaust-valve one, 9-dosing vacuum breaker, 10-intake pipe, 11-decontamination pit top cover, 12-decontamination pit, 13-upflow tube two, 14-liquidometer, 15-thermometer, 16-well heater three, 17-decontamination pit exhaust-valve, 18-well heater exhaust-valve, 19-ultrasonic generator, 20-recycle valve, 21-recycle pump, 22-decontamination liquid vacuum breaker, 23-safety valve, 24-DW system demineralized water system, 301-dispensing box two, 201-stirring rake two, 401-well heater two, 801-exhaust-valve two, 802-exhaust-valve three.
Embodiment
A kind of Nuclear power plants packaged type main pump impeller decontamination facility provided by the utility model with specific embodiment with reference to the accompanying drawings below is described in detail.
As shown in Figure 1, a kind of Nuclear power plants packaged type main pump impeller decontamination facility that the utility model provides, comprise decontamination liquid configuration module A, decontamination configuration module B, DW system demineralized water system 24, decontamination liquid configuration module A and DW system demineralized water system 24 are by hose connection, decontamination liquid configuration module A and decontamination configuration module B is by hose connection, and transmits decontamination liquid;
Wherein, decontamination liquid configuration module A comprises water intake valve 1, stirring rake 1, dispensing box 1, well heater 1, transfer valve 5, transferpump 6, upflow tube 1, exhaust-valve 1, dosing vacuum breaker 9;
Decontamination configuration module B comprises intake pipe 10, decontamination pit top cover 11, decontamination pit 12, upflow tube 2 13, liquidometer 14, thermometer 15, well heater 3 16, decontamination pit exhaust-valve 17, well heater exhaust-valve 18, ultrasonic generator 19, recycle valve 20, recycle pump 21, decontamination liquid vacuum breaker 22, safety valve 23;
The one end at dispensing box 3 top is connected with DW system demineralized water system 24, it is provided with water intake valve 1 in the middle of dispensing box 1 and DW system demineralized water system 24, stirring rake 1 and well heater 1 it is provided with in dispensing box 1, the other end at dispensing box 1 top passes through upflow tube 1 with hose connection, one end bottom dispensing box 1 is connected with upflow tube 1 by exhaust-valve 8, and the other end bottom dispensing box 1 is connected with one of them port of transfer valve 5, transferpump 6, dosing vacuum breaker 9 in turn; Other 3 ports of dosing vacuum breaker 9 are connected with upflow tube 1, the one end at dispensing box 2 301 top, decontamination pit 12 respectively, stirring rake 2 201 and well heater 2 401 it is provided with in dispensing box 2 301, the other end at dispensing box 2 301 top is connected with one end of exhaust-valve 2 801, and the other end of exhaust-valve 2 801 is connected with DW system demineralized water system 24; One end bottom dispensing box 2 301 is connected with upflow tube 1, and centre is provided with exhaust-valve 3 802, and the other end bottom dispensing box 2 301 is connected with decontamination pit 12;
Decontamination pit 12 upper end is provided with decontamination pit top cover 11, decontamination pit 12 is connected with intake pipe 10, decontamination pit 12 connects the two ends of upflow tube 2 13, upflow tube 2 13 is provided with decontamination pit exhaust-valve 17, decontamination pit 12 is also connected with liquidometer 14 and thermometer 15, ultrasonic generator 19 it is provided with in decontamination pit 12, decontamination pit 12 is connected with one end of well heater 3 16, other three ends of well heater 3 16 are connected to well heater exhaust-valve 18, one end of safety valve 23 and one end of decontamination liquid vacuum breaker 22, the other end of decontamination liquid vacuum breaker 22 and one end of recycle pump 21, the other end of recycle pump 21 is connected with one end of recycle valve 20, the other end of safety valve 23 is connected on upflow tube 2 13, the other end of recycle valve 20 is connected on the pipeline that safety valve 23 is connected with upflow tube 2 13.
A kind of Nuclear power plants packaged type main pump impeller decontamination facility that the utility model provides, its working process is:
Decontamination configuration module A
Implement the configuration of required chemical reagent for redox decontamination process, it is made up of the two identical configuration-systems of cover, is respectively used to configuration Oxidizing and Reducing Agents solution. First by hose connection DW system demineralized water system 24, open water intake valve 1 and get clean de-mineralized water, backward configuration case 1 add corresponding chemical reagent, utilize agitator 1 that dispensing box 1 carries and well heater 1 that chemical reagent is fully dissolved, and make decontamination reagent be preheating to certain temperature value, open the transfer valve 5 bottom dispensing box 1 and transferpump 6 afterwards, carry chemical decontaminants by the flexible pipe between two modules to decontamination module.
Dispensing box 1 is configured with upflow tube 1 and exhaust-valve 1, and liquid level exceedes after limit value by upflow tube discharged to floor drain, and each dosing completes emptying for dispensing box 1 by exhaust-valve 1.
Decontamination configuration module B
For the enforcement of main pump radioactive decontamination process, decontamination is divided into oxidation and two stages of reduction, first decontamination oxidising process is carried out: open decontamination pit top cover 11, main pump impeller to be decontaminated is positioned over decontamination pit 12 inner, open transfer valve 5 and transferpump 6 transmits oxygenant decontamination liquid, connect DW system demineralized water system 24 by intake pipe after completing to fetch water, supplement interpolation de-mineralized water to decontamination liquid and reach appointment liquid level, liquid level reads by liquidometer 14, decontamination pit 12 is configured with upflow tube 13 in addition, after liquid level exceedes limit value liquid level stain remover by upflow tube discharged to floor drain. open recycle valve 20, recycle pump 21 and electric heater 16, start circulation heating decontamination process, decontamination pit 12 is with thermometer 15, automatically heating is cut off when recording decontamination liquid temperature and reach 90 degrees Celsius, decrease in temperature is to automatic recovery heating when 80 degrees Celsius, after decontamination liquid reaches desired temperature, recycle pump 21 stops, open ultrasonic wave module 19 and start ultrasonic decontamination, recycle pump 21 is opened again until decontamination oxidising process terminates after certain time, stop recycle pump 21, open decontamination pit exhaust-valve 17, waste liquid is drained into floor drain, main pump decontamination reduction process is carried out afterwards according to same step, until whole end of processing. well heater is also configured with safety valve 23 and prevents well heater superpressure, and well heater exhaust-valve 18 completes the emptying of post-heater for decontamination process.
Claims (3)
1. a Nuclear power plants packaged type main pump impeller decontamination facility, it is characterized in that: comprise decontamination liquid configuration module A, decontamination configuration module B, DW system demineralized water system (24), decontamination liquid configuration module A and DW system demineralized water system (24) are by hose connection, decontamination liquid configuration module A and decontamination configuration module B is by hose connection, and transmits decontamination liquid.
2. a kind of Nuclear power plants packaged type main pump impeller decontamination facility according to claim 1, it is characterised in that: described decontamination liquid configuration module A comprises water intake valve (1), stirring rake one (2), dispensing box one (3), well heater one (4), transfer valve (5), transferpump (6), upflow tube one (7), exhaust-valve one (8), dosing vacuum breaker (9);
Described decontamination configuration module B comprises intake pipe (10), decontamination pit top cover (11), decontamination pit (12), upflow tube two (13), liquidometer (14), thermometer (15), well heater three (16), decontamination pit exhaust-valve (17), well heater exhaust-valve (18), ultrasonic generator (19), recycle valve (20), recycle pump (21), decontamination liquid vacuum breaker (22), safety valve (23).
3. a kind of Nuclear power plants packaged type main pump impeller decontamination facility according to claim 2, it is characterized in that: the one end at described dispensing box (3) top is connected with DW system demineralized water system (24), it is provided with water intake valve (1) in the middle of dispensing box one (3) and DW system demineralized water system (24), stirring rake one (2) and well heater one (4) it is provided with in dispensing box one (3), the other end at dispensing box one (3) top passes through upflow tube one (7) with hose connection, one end of dispensing box one (3) bottom is connected with upflow tube one (7) by exhaust-valve (8), the other end of dispensing box one (3) bottom is connected with transfer valve (5) in turn, transferpump (6), one of them port of dosing vacuum breaker (9), (3) in addition individual port of dosing vacuum breaker (9) is connected with upflow tube one (7), the one end at dispensing box two (301) top, decontamination pit (12) respectively, stirring rake two (201) and well heater two (401) it is provided with in dispensing box two (301), the other end at dispensing box two (301) top is connected with one end of exhaust-valve two (801), and the other end of exhaust-valve two (801) is connected with DW system demineralized water system (24), one end of dispensing box two (301) bottom is connected with upflow tube one (7), and centre is provided with exhaust-valve three (802), and the other end of dispensing box two (301) bottom is connected with decontamination pit (12),
Decontamination pit (12) upper end is provided with decontamination pit top cover (11), decontamination pit (12) is connected with intake pipe (10), decontamination pit (12) connects the two ends of upflow tube two (13), upflow tube two (13) is provided with decontamination pit exhaust-valve (17), decontamination pit (12) is also connected with liquidometer (14) and thermometer (15), ultrasonic generator (19) it is provided with in decontamination pit (12), decontamination pit (12) is connected with one end of well heater three (16), other three ends of well heater three (16) are connected to well heater exhaust-valve (18), one end of safety valve (23) and one end of decontamination liquid vacuum breaker (22), the other end of decontamination liquid vacuum breaker (22) and one end of recycle pump (21), the other end of recycle pump (21) is connected with one end of recycle valve (20), the other end of safety valve (23) is connected on upflow tube two (13), the other end of recycle valve (20) is connected on the pipeline that safety valve (23) is connected with upflow tube two (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520977668.1U CN205282114U (en) | 2015-11-30 | 2015-11-30 | Nuclear power station movable main pump impeller radioactive decontamination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520977668.1U CN205282114U (en) | 2015-11-30 | 2015-11-30 | Nuclear power station movable main pump impeller radioactive decontamination device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205282114U true CN205282114U (en) | 2016-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520977668.1U Withdrawn - After Issue CN205282114U (en) | 2015-11-30 | 2015-11-30 | Nuclear power station movable main pump impeller radioactive decontamination device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205282114U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106098129A (en) * | 2016-06-14 | 2016-11-09 | 中广核工程有限公司 | The portable online radioactive decontamination system of nuclear power station |
| CN106816198A (en) * | 2015-11-30 | 2017-06-09 | 江苏核电有限公司 | A kind of nuclear power station packaged type main pump impeller decontamination facility |
| CN109994229A (en) * | 2019-04-23 | 2019-07-09 | 中广核核电运营有限公司 | Reactor coolant pump impeller heating system |
-
2015
- 2015-11-30 CN CN201520977668.1U patent/CN205282114U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106816198A (en) * | 2015-11-30 | 2017-06-09 | 江苏核电有限公司 | A kind of nuclear power station packaged type main pump impeller decontamination facility |
| CN106816198B (en) * | 2015-11-30 | 2018-05-18 | 江苏核电有限公司 | A kind of nuclear power station packaged type main pump impeller decontamination facility |
| CN106098129A (en) * | 2016-06-14 | 2016-11-09 | 中广核工程有限公司 | The portable online radioactive decontamination system of nuclear power station |
| CN109994229A (en) * | 2019-04-23 | 2019-07-09 | 中广核核电运营有限公司 | Reactor coolant pump impeller heating system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160601 Effective date of abandoning: 20180518 |
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| AV01 | Patent right actively abandoned |