CN206649907U - A kind of Nuclear Power Station's Exhausted Fuels screen work underwater cleaning frame and purging system - Google Patents
A kind of Nuclear Power Station's Exhausted Fuels screen work underwater cleaning frame and purging system Download PDFInfo
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- CN206649907U CN206649907U CN201720218466.8U CN201720218466U CN206649907U CN 206649907 U CN206649907 U CN 206649907U CN 201720218466 U CN201720218466 U CN 201720218466U CN 206649907 U CN206649907 U CN 206649907U
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Abstract
The utility model discloses a kind of Nuclear Power Station's Exhausted Fuels screen work underwater cleaning frame and purging system.The Nuclear Power Station's Exhausted Fuels screen work underwater cleaning frame, including inner sleeve, outer tube, locating piece, cleaning sprayer, sleeve pipe, inner sleeve is arranged in outer tube and is hollow structure, there is the first cavity between inner sleeve and outer tube, locating piece is socketed in outside outer tube and can freely slid on outer tube, and the lower end of inner sleeve is connected with cleaning sprayer.Also disclose a kind of decontamination system, including such as weighing foregoing cleaning machine frame and control device, the control device includes pump, filtration system, electrical control cabinet, one end of pump is connected with the hollow structure of inner sleeve, the other end of pump is split into the first path and alternate path, first path is directly connected with spentnuclear fuel storage pond, and alternate path is connected with cavity again after being connected with filtration system, and electrical control cabinet is connected with pump with the unlatching of controlling pump.The utility model can realize the retired preceding underwater cleaning decontamination of Nuclear Power Station's Exhausted Fuels screen work.
Description
Technical field
It the utility model is related to nuclear facilities clean dirt technical field, and in particular to a kind of Nuclear Power Station's Exhausted Fuels screen work is underwater
Cleaning machine frame and purging system.
Background technology
The storage common practice of whole world Nuclear Power Station's Exhausted Fuels is located in underwater spentnuclear fuel screen work at present.Its purpose
In order to protect the functions such as the structural integrity of spentnuclear fuel, criticality safety, remaining heat release and antidetonation.Center group Qinshan nuclear power plant etc.
There is substantial amounts of spentnuclear fuel screen work to be used for irradiated fuel store.With the increase of nuclear power station active time, existing spentnuclear fuel screen work
The storage of spentnuclear fuel can not have been met, it is necessary to carry out replacing upgrading to existing spentnuclear fuel screen work.Because spentnuclear fuel screen work makes
Loose radioactive substance can be accumulated during, it is local that there is higher radioactivity, need to clean screen work before replacing
Decontamination is to reduce the radioactive dosage of its surface contamination.It is domestic at present to be led in Nuclear Power Station's Exhausted Fuels screen work underwater cleaning decontamination technology
Domain still belongs to blank stage, without producer's design, production spentnuclear fuel screen work clean dirt device.
Utility model content
For the technical problem of above-mentioned shortage spentnuclear fuel screen work clean dirt device, the utility model institute purpose is to provide
A kind of Nuclear Power Station's Exhausted Fuels screen work underwater cleaning frame and purging system, the cleaning machine frame and system can realize the weary combustion of nuclear power station
Expect the retired preceding underwater cleaning decontamination of screen work, and the dosage of Hotspot of Radioactivity in screen work can be effectively reduced the elimination of nuclear facilities
Setting within.
The utility model is achieved through the following technical solutions：
A kind of Nuclear Power Station's Exhausted Fuels screen work underwater cleaning frame, including inner sleeve, outer tube, locating piece, cleaning sprayer, set
Pipe, inner sleeve are arranged in outer tube and are hollow structure, have the first cavity between inner sleeve and outer tube, locating piece is socketed in
It can be slid on outer tube outside outer tube and freely, the lower end of inner sleeve is connected with cleaning sprayer.
Cleaning machine frame is the basic structure of the underwater decontamination of Nuclear Power Station's Exhausted Fuels screen work, and the wiper mechanism passes through in inner sleeve
Hollow structure and the first cavity form circulating water channel, then are cleaned by the spray of cleaning sprayer, realize cleaning function.Hereinafter will
Specifically illustrate the specifically used mechanism of wiper mechanism with reference to whole decontamination system.
Cleaning sprayer is the tubaeform or circular horn shape in side.
Also include briquetting, vacuum rubber slab, briquetting is socketed in outside outer tube and under locating piece set, vacuum rubber slab is set
Put in briquetting.Also include briquetting, vacuum rubber slab, briquetting is socketed in outside outer tube and under locating piece set, and briquetting will be true
Empty rubber slab is fixed on outer tube.Vacuum rubber slab primarily serves the effect of damping, can also play scraping accumulation pine in addition
The effect of scattered radioimpurity radioactive impurity.When rinsing, there is a certain degree of collision between cleaning machine frame and spentnuclear fuel screen work,
It can be contacted with the securing vacuum rubber slab of briquetting with spentnuclear fuel screen work, play a part of damping.
Also include fastening block, the fastening block is arranged on the top of inner sleeve and is fastened in inner sleeve.
Also include lifting bolt, lifting bolt is arranged in fastening block, for aiding in slinging whole decontamination plant or
Put down.When using cleaning machine frame, specifically cleaning machine frame is placed in spentnuclear fuel storage pond and carries out spentnuclear fuel lattice
The cleaning of frame, fastening block is set in inner sleeve, and lifting bolt is set in fastening block, it is therefore an objective to is driven and fastened by suspension ring
Block is moved, and the placement in pond is deposited finally to realize cleaning machine frame in spentnuclear fuel.
A kind of Nuclear Power Station's Exhausted Fuels screen work underwater cleaning system, including cleaning machine frame as the aforementioned and control device, it is described
Control device includes pump, filtration system, electrical control cabinet, and the arrival end of pump is connected with the hollow structure of inner sleeve, and pump goes out
Mouth end is split into the first path and alternate path, and the first path is directly connected with spentnuclear fuel storage pond, alternate path and mistake
It is connected again with outer tube after filter system connectivity, electrical control cabinet is connected with pump with the unlatching of controlling pump.
As described in background information, spentnuclear fuel screen work is that storage is underwater, therefore the special spentnuclear fuel that is provided with deposits pond.
The use of decontamination plant system of the present utility model is as follows：By the unlatching of electrical control cabinet controlling pump, after opening pump, entered by pump
Row is drawn water, and water spentnuclear fuel deposited in pond is reached in pump by inner sleeve, and then a water part therein is passed through the by pump
One path is back in spentnuclear fuel storage pond, and another part reaches filtration system by alternate path, by filtration system
This part water after filtering is again by the first cavity between the inner sleeve and outer tube of cleaning machine frame, into cleaning sprayer, by
Cleaning sprayer is ejected on spentnuclear fuel screen work, is entered finally into spentnuclear fuel storage pond.
In order to improve detersive efficiency, cleaning machine frame of the present utility model is provided with the second cavity of diverging dress, and such as second is empty
Chamber can be the cavity of cone, can so open the water extracted out and be put into is fully dispersed, improve filter efficiency and decontamination effect
Rate.
Filtration system includes the first filtering pretreatment unit and the second filter, and it is pre- that alternate path first passes through the first filtering
Processing unit, then by the second filter.First filtering pretreatment unit is carried out slightly to accumulating loose radioactive substance
Slightly handle, further fine processing is then carried out to it by the second filter again.In order to improve filter effect, can also set
Put multiple second filters.
Second filter can be multiple.
Valve is additionally provided between first path and pump, valve is additionally provided between alternate path and pump.
Also include going spentnuclear fuel to deposit pond, the spentnuclear fuel storage pond is connected with alternate path.In order to prevent pipeline
There is leakage and the situation of leaked liquid occur, be also provided with the liquid that spentnuclear fuel storage pond storage is spilt.
The utility model compared with prior art, has the following advantages and advantages：
1st, the utility model can realize the retired preceding underwater cleaning decontamination of Nuclear Power Station's Exhausted Fuels screen work, and can be by screen work
The dosage of Hotspot of Radioactivity is effectively reduced within the setting of the elimination of nuclear facilities, has filled up domestic nuclear power spentnuclear fuel screen work
The technological gap of underwater cleaning decontamination；
2nd, the utility model is simple in construction, convenient operation, the flushing speed of present apparatus underwater cleaning decontamination can 2m/s-
22m/s is adjusted, and by adjusting the hole count of pump or cleaning sprayer, can be directed to the difference of Hotspot of Radioactivity intensity, be realized difference
Change clean dirt.
3. the dosage on Hotspot of Radioactivity surface can reduce as little as below 10mSv/h after screen work cleaning, meet national standard
GB9133-1995《Radwaste is classified》In requirement on low-level waste specific activity.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the utility model embodiment, forms the one of the application
Part, the restriction to the utility model embodiment is not formed.In the accompanying drawings：
Fig. 1 is the utility model structure diagram.
Fig. 2 is the utility model cleaning machine frame structural representation.
Mark and corresponding parts title in accompanying drawing：
1- cleaning machine frames, 2- control devices, 3- pumps, the filtering pretreatment units of 4- first, the filters of 5- second, 6- are electric
Switch board, 7- inner sleeves, 8- outer tubes, 9- locating pieces, 10- briquettings, 11- vacuum rubber slabs, 12- cleaning sprayers, 13- fastenings
Block, 14- lifting bolts, 15- spentnuclear fuels storage pond, 16- go spentnuclear fuel to deposit pond.
Embodiment
For the purpose of this utility model, technical scheme and advantage is more clearly understood, with reference to embodiment and accompanying drawing,
The utility model is described in further detail, and exemplary embodiment of the present utility model and its explanation are only used for explaining this
Utility model, it is not intended as to restriction of the present utility model.
Embodiment 1
As shown in Fig. 2 a kind of Nuclear Power Station's Exhausted Fuels screen work underwater cleaning frame, including inner sleeve 7, outer tube 8, locating piece
9th, cleaning sprayer 12, sleeve pipe, sleeve pipe include inner sleeve 7 and outer tube 8, and inner sleeve 7 is arranged in outer tube 8, inner sleeve 7 and outer
Have the first cavity between sleeve pipe 8, locating piece 9 is socketed in outside outer tube 8 and can freely slid on outer tube 8, the first cavity and
Cleaning sprayer 12 is connected.
Cleaning sprayer 12 is the tubaeform or circular horn shape in side.Horn-like cleaning sprayer 12 can change the basin of water,
Change hydro-peening speed.Preferably side is tubaeform, and the cleaning sprayer and the external structure of spentnuclear fuel screen work that side is tubaeform are adapted.
Cleaning machine frame is the basic structure of the underwater decontamination of Nuclear Power Station's Exhausted Fuels screen work, and the wiper mechanism passes through inner sleeve 7
Hollow structure and the first cavity form circulating water channel, then are cleaned by the spray of cleaning sprayer 12, realize cleaning function.Afterwards
Text illustrates the specifically used mechanism of wiper mechanism by whole decontamination system is specifically combined.
The second cavity is formed between the side of cleaning sprayer 12 and outer tube 8, the second cavity prolongs the passage of the first cavity
Stretch the cavity for divergent shape.
Also include briquetting 10, vacuum rubber slab 11, briquetting 10 is socketed in outside outer tube 8 and under 9 sets of locating piece, vacuum
Rubber slab 11 is arranged in briquetting 10.
Also include fastening block 13, the fastening block 13 is arranged on the top of inner sleeve 7 and is fastened in inner sleeve 7.
Also include lifting bolt 14, lifting bolt 14 is arranged in fastening block 13, for aiding in hanging whole decontamination plant
Rise or put down.When using cleaning machine frame, specifically cleaning machine frame is placed in spentnuclear fuel storage pond 15 and carried out
The cleaning of spentnuclear fuel screen work, fastening block 13 is set in inner sleeve 7, and lifting bolt 14 is set in fastening block 13, it is therefore an objective to
Drive fastening block 13 to move by suspension ring, the placement in pond 15 is deposited finally to realize cleaning machine frame in spentnuclear fuel.
Embodiment 2
As shown in figure 1, a kind of Nuclear Power Station's Exhausted Fuels screen work underwater cleaning decontamination plant system, including such as weigh foregoing cleaning
Frame and control device 2, the control device 2 include pump 3, filtration system, electrical control cabinet 6, the arrival end and inner sleeve of pump 3
7 hollow structure is connected, and the port of export of pump 3 is split into the first path and alternate path, and the first path is directly deposited with spentnuclear fuel
The pond 15 that discharges water is connected, and alternate path is connected with outer tube 8 again after being connected with filtration system, and electrical control cabinet 6 is connected with pump 3
With the unlatching of controlling pump 3.
As described in background information, spentnuclear fuel screen work is that storage is underwater, therefore the special spentnuclear fuel that is provided with deposits pond
15.The use of decontamination plant system of the present utility model is as follows：By the unlatching of the controlling pump 3 of electrical control cabinet 6, after opening pump 3,
Drawn water by pump 3, water spentnuclear fuel deposited in pond 15 is reached in pump 3 by the hollow structure of inner sleeve 7, then pump 3
A water part therein is back into spentnuclear fuel by the first path to deposit in pond 15, another part is reached by alternate path
To filtration system, this part water after filtration system filters is again by between the inner sleeve 7 and outer tube 8 of cleaning machine frame
First cavity is entered in spentnuclear fuel storage pond 15.
In order to improve detersive efficiency, cleaning machine frame of the present utility model is provided with the second cavity of diverging dress, and such as second is empty
Chamber can be the cavity of cone, can so open the water extracted out and be put into is fully dispersed, improve filter efficiency and decontamination effect
Rate.
Filtration system includes the first filtering filter 5 of pretreatment unit 4 and second, and alternate path first passes through the first filtering
Pretreatment unit 4, then by the second filter 5.First filtering pretreatment unit 4 is entered to accumulating loose radioactive substance
The rough processing of row, then carries out further fine processing by the second filter 5 to it again.In order to improve filter effect, also
Multiple second filters 5 can be set.
Second filter 5 can be multiple.
Valve is additionally provided between first path and pump 3, valve is additionally provided between alternate path and pump 3.
Also include going spentnuclear fuel to deposit pond 16, the spentnuclear fuel storage pond 15 is connected with alternate path.In order to prevent
There is leakage and the situation of leaked liquid occurs in pipeline, is also provided with spentnuclear fuel storage pond 16 and deposits the liquid spilt.
Above-described embodiment, the purpose of this utility model, technical scheme and beneficial effect are entered
One step describes in detail, should be understood that and the foregoing is only specific embodiment of the present utility model, is not used to limit
Determine the scope of protection of the utility model, it is all within the spirit and principles of the utility model, any modification for being made, equally replace
Change, improve, should be included within the scope of protection of the utility model.
Claims (10)
1. a kind of Nuclear Power Station's Exhausted Fuels screen work underwater cleaning frame, it is characterised in that including inner sleeve (7), outer tube (8), determine
Position block (9), cleaning sprayer (12), sleeve pipe, sleeve pipe include inner sleeve (7) and outer tube (8), and inner sleeve (7) is arranged on outer tube
(8) in, there is the first cavity between inner sleeve (7) and outer tube (8), locating piece (9) is socketed in outer tube (8) outside and can be in overcoat
Freely slid on pipe (8), the first cavity is connected with cleaning sprayer (12).
A kind of 2. Nuclear Power Station's Exhausted Fuels screen work underwater cleaning frame according to claim 1, it is characterised in that cleaning sprayer
(12) it is the tubaeform or circular horn shape in side.
3. a kind of Nuclear Power Station's Exhausted Fuels screen work underwater cleaning frame according to claim 1, it is characterised in that also include pressure
Block (10), vacuum rubber slab (11), briquetting (10) are socketed in outer tube (8) outside and under locating piece (9) sets, and briquetting (10) will
Vacuum rubber slab (11) is fixed on outer tube (8).
4. a kind of Nuclear Power Station's Exhausted Fuels screen work underwater cleaning frame according to claim 1, it is characterised in that also include tight
Gu block (13), the fastening block (13) is arranged on the top of inner sleeve (7) and is fastened in inner sleeve (7).
5. a kind of Nuclear Power Station's Exhausted Fuels screen work underwater cleaning frame according to claim 4, it is characterised in that also include hanging
Ring screw (14), lifting bolt (14) are arranged in fastening block (13), for aiding in that whole decontamination plant is sling or put down.
6. a kind of Nuclear Power Station's Exhausted Fuels screen work underwater cleaning system, it is characterised in that including as described in claim any one of 1-5
Cleaning machine frame and control device (2), the control device (2) include pump (3), filtration system, electrical control cabinet (6), pump (3)
Entrance be connected with inner sleeve (7), the port of export of pump (3) is split into the first path and alternate path, and the first path is direct
It is connected with spentnuclear fuel storage pond (15), alternate path is connected with outer tube (8) again after being connected with filtration system, electric-controlled
Cabinet (6) processed is connected with the unlatching of controlling pump (3) with pump (3).
A kind of 7. Nuclear Power Station's Exhausted Fuels screen work underwater cleaning system according to claim 6, it is characterised in that filtration system
The first filtering pretreatment unit is first passed through including the first filtering pretreatment unit (4) and the second filter (5), alternate path
(4), then by the second filter (5).
A kind of 8. Nuclear Power Station's Exhausted Fuels screen work underwater cleaning system according to claim 7, it is characterised in that the second filtering
Device (5) is multiple.
A kind of 9. Nuclear Power Station's Exhausted Fuels screen work underwater cleaning system according to claim 6, it is characterised in that the first path
Valve is additionally provided between pump (3), valve is additionally provided between alternate path and pump (3).
10. a kind of Nuclear Power Station's Exhausted Fuels screen work underwater cleaning system according to claim 6, it is characterised in that also include
Spentnuclear fuel is gone to deposit pond (16), spentnuclear fuel storage pond (15) is connected with alternate path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720218466.8U CN206649907U (en) | 2017-03-07 | 2017-03-07 | A kind of Nuclear Power Station's Exhausted Fuels screen work underwater cleaning frame and purging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720218466.8U CN206649907U (en) | 2017-03-07 | 2017-03-07 | A kind of Nuclear Power Station's Exhausted Fuels screen work underwater cleaning frame and purging system |
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| CN206649907U true CN206649907U (en) | 2017-11-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108573760A (en) * | 2018-05-22 | 2018-09-25 | 广东核电合营有限公司 | A kind of underwater flusher for Spent Fuel Pool dilatation and underwater purging method |
| CN108648846A (en) * | 2018-05-22 | 2018-10-12 | 广东核电合营有限公司 | It is a kind of to wash blowing apparatus and waterborne wash blows method for the waterborne of Spent Fuel Pool dilatation |
| CN108682465A (en) * | 2018-05-22 | 2018-10-19 | 广东核电合营有限公司 | Million kilowatt nuclear power factory Spent Fuel Pool dilatation mounting process |
| CN108682462A (en) * | 2018-05-22 | 2018-10-19 | 广东核电合营有限公司 | Million kilowatt nuclear power factory spentnuclear fuel bottom of pond irregularity degree measures and process for leveling |
-
2017
- 2017-03-07 CN CN201720218466.8U patent/CN206649907U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108573760A (en) * | 2018-05-22 | 2018-09-25 | 广东核电合营有限公司 | A kind of underwater flusher for Spent Fuel Pool dilatation and underwater purging method |
| CN108648846A (en) * | 2018-05-22 | 2018-10-12 | 广东核电合营有限公司 | It is a kind of to wash blowing apparatus and waterborne wash blows method for the waterborne of Spent Fuel Pool dilatation |
| CN108682465A (en) * | 2018-05-22 | 2018-10-19 | 广东核电合营有限公司 | Million kilowatt nuclear power factory Spent Fuel Pool dilatation mounting process |
| CN108682462A (en) * | 2018-05-22 | 2018-10-19 | 广东核电合营有限公司 | Million kilowatt nuclear power factory spentnuclear fuel bottom of pond irregularity degree measures and process for leveling |
| CN108648846B (en) * | 2018-05-22 | 2020-06-05 | 广东核电合营有限公司 | Water washing and blowing device and water washing and blowing method for spent fuel pool expansion |
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