CN105149278B - Chemical cleaning decontamination equipment of nuclear power plant - Google Patents
Chemical cleaning decontamination equipment of nuclear power plant Download PDFInfo
- Publication number
- CN105149278B CN105149278B CN201510661014.2A CN201510661014A CN105149278B CN 105149278 B CN105149278 B CN 105149278B CN 201510661014 A CN201510661014 A CN 201510661014A CN 105149278 B CN105149278 B CN 105149278B
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- Prior art keywords
- decontamination
- module
- nuclear power
- solution storage
- internal
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
Abstract
The invention relates to chemical cleaning decontamination equipment of a nuclear power plant. The chemical cleaning decontamination equipment of the nuclear power plant comprises a dosing system, a surface decontamination assembly, an internal decontamination assembly and a control module, wherein the dosing system comprises at least one decontamination solution storage tank, at least one doser connected with the decontamination solution storage tank and a pH meter which is installed on the decontamination solution storage tank and used for detecting a pH value of a solution in the decontamination solution storage tank, and the control module is connected with the dosing system, the surface decontamination assembly and the internal decontamination assembly and used for conducting automation control on the dosing system, the surface decontamination assembly and the internal decontamination assembly. Due to the fact that the dosing system is connected with the surface decontamination assembly and the internal decontamination assembly and makes the surface decontamination assembly and the internal decontamination assembly connected with the control module, chemical cleaning can be conducted on a circulation loop of the nuclear power plant, the decontamination equipment is not only suitable for an on-service nuclear power plant, but also suitable for an ex-service nuclear power plant, and the decontamination equipment is suitable for decontamination of the inner surface and the outer surface of nuclear power plant system equipment and capable of being used in different decontamination technologies.
Description
Technical field
The invention belongs to nuclear industry field, it is related to a kind of washer, and in particular to a kind of nuclear power station Chemical cleaning decontamination
Equipment.
Background technology
Nuclear power station runs under high temperature and high pressure environment, and the metallic corrosion products of circulation loop moves to reactor core with cooling agent
And activate, then deposited on system unit surface as cooling agent returns to circulation loop again, so in primary heat transport system material list
Face has been covered with radionuclide.In order to reduce the exposure dosage of personnel in maintenance process, it is necessary to carry out decontamination to these parts
Operation.
Preferable chemical decontamination Processes and apparatus is wished that maximum decontamination factor, minimum secondary waste can be reached, is at least received
According to dosage and ambient influnence, while also needing to consider be contaminated in itself and its clean for the equipment of decontamination.Further for difference
Decontamination object and decontamination purpose, may be selected different decontamination process, such as, to in-service nuclear power plant decontamination, it is desirable to decontamination process and mistake
Corrosion of the Cheng Buhui to system equipment base material has undesirable effect, and to retired nuclear power plant decontamination, it is desirable to maximum decontamination because
Son does not cause secondary pollution.The wide chemical decontamination technique of nuclear power station application mainly has HP/CORD, AP-CITROX, CAN-
DECON/DEREM, LOMI, EMMAC and its improved method.For factors such as different decontamination objects, decontamination purpose, decontamination environment
Need using different decontamination process, therefore, nuclear power station needs modularization, the washer that can assemble according to demand meets not
With decontamination situation.
The content of the invention
A kind of nuclear power station Chemical cleaning washer is provided the invention aims to overcome the deficiencies in the prior art.
To reach above-mentioned purpose, the technical solution adopted in the present invention is：A kind of nuclear power station Chemical cleaning washer, it
Including：
Dispensing system, the dispensing system includes at least one decontaminating solution storage bin and the decontaminating solution storage bin
At least one doser that is connected, the pH meter on the decontaminating solution storage bin being used to detect its interior solution ph；
Surface decontamination component, the surface decontamination component includes the surface decontamination being connected with the decontaminating solution storage bin
Case, the first self-circulation pipeline on the surface decontamination case and in first self-circulation pipeline first
Pump, is provided with the first valve for controlling its break-make between the dispensing system and the surface decontamination component；
Internal decontamination module, the internal decontamination module includes the inside decontamination being connected with the decontaminating solution storage bin
Case, the second self-circulation pipeline on the internal decontamination tank for external circulation loop and installed in described second from
The second pump on circulation line, the second valve for controlling its break-make is provided between the dispensing system and the internal decontamination module
Door；
Control module, the control module is gone with the dispensing system, the surface decontamination component and the inside respectively
Dirty component is connected, for carrying out Automated condtrol to it.
Optimally, the heated mould heated for the solution to wherein filling is installed in the decontaminating solution storage bin
Block and the stirring module for being mixed to the solution for wherein filling.
Optimally, the control module respectively with the doser, the pH meter, the heating module and the stirring
Module is connected.
Optimally, it also includes the waste liquid group being connected with first self-circulation pipeline and second self-circulation pipeline
Part.
Further, the 3rd valve for controlling its break-make is provided between the waste liquid component and the surface decontamination component
Door, the 4th valve for controlling its break-make is provided between the waste liquid component and the internal decontamination module.
Because above-mentioned technical proposal is used, the present invention has following advantages compared with prior art：Nuclear power station of the present invention
Learn clean dirt equipment, by by dispensing system respectively with surface decontamination component, internal decontamination module, and by itself and control module
It is connected, the Chemical cleaning to nuclear power station circulation loop can be realized, the washer is not only applicable in-service nuclear power station and is also suitable
Retired nuclear power station, is applicable not only to the decontamination of nuclear power plant system equipment inner surface, is also applied for the decontamination of outer surface, can be used for not
Same decontamination process, each system can need to carry out modular combination according to scene, and its adaptability is stronger, and reduce dirty again
Dye.
Brief description of the drawings
Fig. 1 is the structural representation of nuclear power station Chemical cleaning washer of the present invention；
Wherein, 1, dispensing system；11st, doser；12nd, pH meter；13rd, decontaminating solution storage bin；131st, heating module；132、
Stirring module；2nd, surface decontamination component；21st, surface decontamination case；22nd, the first self-circulation pipeline；23rd, the first pump；3rd, internal decontamination
Component；31st, internal decontamination tank；32nd, the second self-circulation pipeline；33rd, the second pump；4th, control module；5th, waste liquid component；6th, the first valve
Door；7th, the second valve；8th, the 3rd valve；9th, the 4th valve.
Specific embodiment
The preferred embodiment of the invention is described in detail below in conjunction with accompanying drawing.
Nuclear power station Chemical cleaning washer as shown in Figure 1, mainly includes dispensing system 1, surface decontamination component 2, interior
Portion's decontamination module 3 and control module 4；Surface decontamination component 2 and internal decontamination module 3 are connected with dispensing system 1, for holding
Connect the cleaning solution configured in dispensing system 1；Control module 4 then with dispensing system 1, surface decontamination component 2 and internal decontamination group
Part 3 is connected, for carrying out Automated condtrol to them.
Wherein, dispensing system 1 includes doser 11, pH meter 12 and decontaminating solution storage bin 13, doser 11 at least
Individual, it is connected with decontaminating solution storage bin 13, in various chemical agents are added into corresponding decontaminating solution storage bin 13,
Mixed；PH meter 12 is arranged on decontaminating solution storage bin 13, the pH value for detecting its interior solution.Surface decontamination component 2
Including be connected with decontaminating solution storage bin 13 surface decontamination case 21, be removably mounted on surface decontamination case 21 first
, be dipped in for the part of nuclear power station when in use by self-circulation pipeline 22 and the first pump 23 in the first self-circulation pipeline 22
In surface decontamination case 21, start the first pump 23 and cause the cleaning solution in surface decontamination case 21 after the first self-circulation pipeline 22 again
Into surface decontamination case 21, the shuttling movement of cleaning solution is realized, so as to be rinsed to nuclear power plant components outer surface.Make up a prescription and be
The first valve 6 is provided between system 1 and surface decontamination component 2, the solution in decontaminating solution storage bin 13 fully enters surface
After in decontamination module 2, the first valve 6 is closed, the first pump 23 is restarted after cut-off dispensing system 1 and surface decontamination component 2.
Internal decontamination module 3 includes the inside decontamination tank 31 being connected with decontaminating solution storage bin 13, removably installs
The second self-circulation pipeline 32 internally on decontamination tank 31 and the second pump 33 in the second self-circulation pipeline 32, second
Self-circulation pipeline 32 is used to connect with nuclear power station circulation loop, and the second pump of startup 33 causes the cleaning solution in internal decontamination tank 31
Internal decontamination tank 31 is entered back into after the second self-circulation pipeline 32, circulation loop, the second self-circulation pipeline 32, cleaning solution is realized
Shuttling movement, so as to being rinsed to nuclear power station circulation loop inner surface.Set between dispensing system 1 and internal decontamination module 3
The second valve 7 is equipped with, after the solution in decontaminating solution storage bin 13 is fully entered in internal decontamination module 3, the second valve is closed
Restart the second pump 33 after door 7, cut-off dispensing system 1 and internal decontamination module 3.
In the present embodiment, it is provided with decontaminating solution storage bin 13 for adding that the solution to wherein filling is heated
Thermal modules 131 and the stirring module 132 for being mixed to the solution for wherein filling.Control module 4 respectively with plus
Medicine device 11, pH meter 12, heating module 131 and stirring module 132 are connected such that it is able to carry out Automated condtrol to them.
Nuclear power station Chemical cleaning washer also includes the waste liquid being connected with the first self-circulation pipeline 22 and the second self-circulation pipeline 32
Component 5, for collecting waste liquid.The 3rd valve 8 for controlling its break-make is provided between waste liquid component 5 and surface decontamination component 2, is given up
The 4th valve 9 for controlling its break-make is provided between liquid component 5 and internal decontamination module 3.Decontaminating solution storage bin 13 and surface
The pipeline connected between decontamination module 2 and between decontaminating solution storage bin 13 and internal decontamination module 3 is provided with pump, for inciting somebody to action
The cleaning solution configured in decontaminating solution storage bin 13 is directed respectively into surface decontamination component 2, internal decontamination module 3.
The structure to nuclear power station Chemical cleaning washer of the present invention is illustrated above, and its operation principle is made below
It is explained further：
Detergent acid potassium permanganate needed for preparing surface decontamination in decontaminating solution storage bin 13 aoxidizes detergent, leads to
Crossing after stirring module 132 is stirred carries out carrying out pH detections using pH meter 12, is then warmed in the presence of heating module 131 and set
Fixed temperature（Set as needed, such as 50 ~ 80 DEG C）；Then the first valve 6 is opened, by pump by acid potassium permanganate
Detergent（That is oxidisability detergent）All import in surface decontamination component 2, close the first valve 6；Start the first pump 23, make table
Then oxidation decontamination liquid in face decontamination tank 21 aoxidizes decontamination liquid and drains into waste liquid through the 3 ~ 20h of self-loopa of the first self-circulation pipeline 22
In component 5.By control module 4, during above-mentioned oxidation decontamination liquid self-loopa, reduction is prepared in decontaminating solution storage bin 13
Property detergent（Containing oxalic acid, nitric acid etc., or add certain chelating agent etc., specific oxidisability detergent and reproducibility decontamination
Agent can be configured according to actual needs）, after stirring, pH detections；Then the temperature of setting is warmed to, when oxidisability above is gone
After dirty agent is discharged, the first valve 6 is opened, reduction detergent is all imported in surface decontamination component 2, close the first valve 6；
Start the first pump 23, make the reduction decontamination liquid in surface decontamination case 21 through 3 ~ 12h of self-loopa, then drain into waste liquid component 5, survey
Amount γ values.Said process can be carried out repeatedly as needed.Finally, the configuration demineralized water in decontaminating solution storage bin 13, repeats
Corresponding operation, repeats 3-5 times.Said process is equally applicable to internal decontamination module 3, can relevant oxidisability detergent, also
Originality detergent is slightly different.
The above embodiments merely illustrate the technical concept and features of the present invention, its object is to allow person skilled in the art
Scholar will appreciate that present disclosure and implement according to this that it is not intended to limit the scope of the present invention.It is all according to the present invention
The equivalent change or modification that Spirit Essence is made, should all be included within the scope of the present invention.
Claims (3)
1. a kind of nuclear power station Chemical cleaning washer, it is characterised in that it includes：
Dispensing system（1）, the dispensing system（1）Including at least one decontaminating solution storage bin（13）With the decontaminating solution
Storage bin（13）At least one doser being connected（11）, installed in the decontaminating solution storage bin（13）It is upper to be used to detect it
The pH meter of interior solution ph（12）, the decontaminating solution storage bin（13）Inside it is provided with and is added for the solution to wherein filling
The heating module of heat（131）And the stirring module for being mixed to the solution for wherein filling（132）；
Surface decontamination component（2）, the surface decontamination component（2）Including with the decontaminating solution storage bin（13）The table being connected
Face decontamination tank（21）, installed in the surface decontamination case（21）On the first self-circulation pipeline（22）And installed in described first
Self-circulation pipeline（22）On the first pump（23）, the dispensing system（1）With the surface decontamination component（2）Between be provided with control
Make the first valve of its break-make（6）；
Internal decontamination module（3）, the internal decontamination module（3）Including with the decontaminating solution storage bin（13）What is be connected is interior
Portion's decontamination tank（31）, installed in the internal decontamination tank（31）Upper the second self-circulation pipeline for being used for external circulation loop（32）With
And installed in second self-circulation pipeline（32）On the second pump（33）, the dispensing system（1）With the internal decontamination group
Part（3）Between be provided with control its break-make the second valve（7）；
Control module（4）, the control module（4）Respectively with the dispensing system（1）, the surface decontamination component（2）And institute
State internal decontamination module（3）It is connected, for carrying out Automated condtrol to it；
Waste liquid component（5）, the waste liquid component（5）With first self-circulation pipeline（22）With second self-circulation pipeline
（32）It is connected.
2. nuclear power station Chemical cleaning washer according to claim 1, it is characterised in that：The control module（4）Point
Not with the doser（11）, the pH meter（12）, the heating module（131）And the stirring module（132）It is connected.
3. nuclear power station Chemical cleaning washer according to claim 1, it is characterised in that：The waste liquid component（5）With
The surface decontamination component（2）Between be provided with control its break-make the 3rd valve（8）, the waste liquid component（5）It is interior with described
Portion's decontamination module（3）Between be provided with control its break-make the 4th valve（9）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510661014.2A CN105149278B (en) | 2015-10-14 | 2015-10-14 | Chemical cleaning decontamination equipment of nuclear power plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510661014.2A CN105149278B (en) | 2015-10-14 | 2015-10-14 | Chemical cleaning decontamination equipment of nuclear power plant |
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| CN105149278A CN105149278A (en) | 2015-12-16 |
| CN105149278B true CN105149278B (en) | 2017-05-24 |
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Families Citing this family (5)
| 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 |
| CN106216310A (en) * | 2016-09-14 | 2016-12-14 | 苏州热工研究院有限公司 | The special washer of nuclear power station radiocontamination object |
| CN109706518A (en) * | 2019-01-30 | 2019-05-03 | 沈阳中科腐蚀控制工程技术有限公司 | A kind of packaged type electrochemical decontamination equipment and decontamination process |
| CN111261308B (en) * | 2020-01-20 | 2023-08-25 | 岭东核电有限公司 | Chemical cleaning method for radioactive waste liquid treatment system of pressurized water reactor nuclear power station |
| CN112198283A (en) * | 2020-09-30 | 2021-01-08 | 三门核电有限公司 | Chemical dosing system for main steam humidity test and application method thereof |
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| Publication number | Publication date |
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| CN105149278A (en) | 2015-12-16 |
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Effective date of registration: 20151202 Address after: 518031 Guangdong city of Shenzhen province Futian District science and technology building, Shangbu Road 15 Applicant after: Guangdong Nuclear Power Joint Venture Co., Ltd Applicant after: Dayawan Nuclear Power Running Management Co., Ltd. Applicant after: Suzhou Nuclear Power Research Institute Co., Ltd. Applicant after: China General Nuclear Power Corporation Applicant after: China wide nuclear electricity incorporated company Address before: Shenzhen Dapeng New Street Dapeng Pengfei road 518124 city in Guangdong province Dayawan 01 nuclear power base building B105 Applicant before: Dayawan Nuclear Power Running Management Co., Ltd. Applicant before: Suzhou Nuclear Power Research Institute Co., Ltd. Applicant before: China General Nuclear Power Corporation Applicant before: China wide nuclear electricity incorporated company |
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Effective date of registration: 20151225 Address after: 518031 Guangdong city of Shenzhen province Futian District science and technology building, Shangbu Road 15 Applicant after: Guangdong Nuclear Power Joint Venture Co., Ltd Applicant after: Suzhou Nuclear Power Research Institute Co., Ltd. Applicant after: China General Nuclear Power Corporation Applicant after: China wide nuclear electricity incorporated company Address before: 518031 Guangdong city of Shenzhen province Futian District science and technology building, Shangbu Road 15 Applicant before: Guangdong Nuclear Power Joint Venture Co., Ltd Applicant before: Dayawan Nuclear Power Running Management Co., Ltd. Applicant before: Suzhou Nuclear Power Research Institute Co., Ltd. Applicant before: China General Nuclear Power Corporation Applicant before: China wide nuclear electricity incorporated company |
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