CN111928590A - Method for removing accumulated water in nuclear waste bin - Google Patents
Method for removing accumulated water in nuclear waste bin Download PDFInfo
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- CN111928590A CN111928590A CN202010685474.XA CN202010685474A CN111928590A CN 111928590 A CN111928590 A CN 111928590A CN 202010685474 A CN202010685474 A CN 202010685474A CN 111928590 A CN111928590 A CN 111928590A
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- nuclear waste
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B7/00—Drying solid materials or objects by processes using a combination of processes not covered by a single one of groups F26B3/00 and F26B5/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/04—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour circulating over or surrounding the materials or objects to be dried
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/12—Drying solid materials or objects by processes not involving the application of heat by suction
Abstract
The invention relates to the technical field of nuclear waste treatment, in particular to a method for removing accumulated water in a nuclear waste tank, which adopts the following technical scheme: the method comprises the following steps: opening a cover plate of the nuclear waste box body to cut part of the separation net on the separation net at the bottom of the nuclear waste box body so as to form a water pumping hole; pumping accumulated water at the bottom of the water pumping hole; when no stranded liquid flows out, covering the cover plate of the nuclear waste box body; introducing hot air through the nuclear waste box material hole A, so that gas in the nuclear waste box body flows out from the nuclear waste box material hole B; detecting the humidity of the gas flowing out of the material hole B; when the water content of the gas flowing out of the material hole B is lower than 1%, opening the cover plate of the nuclear waste tank body again; and (4) replacing the cut separation net, and welding and fixing the cut separation net and the nuclear waste box body. The nuclear waste bin can remove accumulated water in the nuclear waste bin body, so that the water content in the nuclear waste bin body reaches the relevant standard of radioactive waste outward transportation.
Description
Technical Field
The invention relates to the technical field of nuclear waste treatment, in particular to a method for removing accumulated water in a nuclear waste tank.
Background
After the radioactive nuclear waste is detached from the nuclear facility, the radioactive nuclear waste needs to be boxed and prepared, namely, the nuclear waste is put into a nuclear waste box to form a radioactive goods bag with certain physical properties, and then the radioactive goods bag is sent to a radioactive disposal site for final disposal. The nuclear waste box body is subjected to external dimension design in the design process according to the standard EJ1076-2014 and is subjected to on-site acceptance according to the corresponding technical specification. The applicant finds that in the recent nuclear waste boxing process, part of nuclear waste boxes have water accumulated in the box body with the depth of about 50mm before boxing and reconditioning, and the reason is caused by continuous heavy rain in outdoor rainy seasons and aging of sealing glue through research and discovery of the applicant. According to the relevant standards of radioactive waste outward transportation, the water content in the nuclear waste box body is lower than 1%, so that accumulated water in the nuclear waste box body needs to be removed.
The existing nuclear waste box body is made of thin-wall carbon steel, four corners of the existing nuclear waste box body are supported by standard corner pieces, rib plates are arranged on the inner wall of the nuclear waste box body at intervals of 5mm, steel wire meshes are spot-welded on the rib plates and are connected with one another to form an inner box, and the distance between each steel wire mesh and the inner wall of the nuclear waste box body is 30 mm. Because about 1t of current nuclear waste case box dead weight, if directly overturn the nuclear waste case box in order to arrange ponding, firstly there is great industrial risk, secondly also be difficult to discharge ponding totally in order to reach the relevant standard of radioactive waste outward transportation.
Disclosure of Invention
Aiming at the technical problem that accumulated water exists in the box body of the conventional nuclear waste box before boxing and servicing, the invention provides a method for removing the accumulated water in the nuclear waste box, which can remove the accumulated water in the box body of the nuclear waste box so as to enable the water content in the box body of the nuclear waste box to reach the relevant standard of radioactive waste outward transportation.
The invention is realized by the following technical scheme:
a method of removing standing water from the interior of a nuclear waste bin comprising the steps of:
opening a cover plate of the nuclear waste box body to cut part of the separation net on the separation net at the bottom of the nuclear waste box body so as to form a water pumping hole;
pumping accumulated water at the bottom of the water pumping hole;
when no stranded liquid flows out, covering the cover plate of the nuclear waste box body;
introducing hot air through the nuclear waste box material hole A, so that gas in the nuclear waste box body flows out from the nuclear waste box material hole B;
detecting the humidity of the gas flowing out of the material hole B;
when the water content of the gas flowing out of the material hole B is lower than 1%, opening the cover plate of the nuclear waste tank body again;
and (4) replacing the cut separation net, and welding and fixing the cut separation net and the nuclear waste box body.
According to the invention, part of the separation net is cut on the separation net at the bottom of the nuclear waste box body to form the water pumping hole, and the accumulated water at the bottom of the water pumping hole is pumped out to pump most of the accumulated water in the nuclear waste box body away, and the nuclear waste box body does not need to be turned over, so that the industrial risk of turning over the nuclear waste box body does not exist.
After no stranded rivers, let in hot-blastly through nuclear waste bin material hole A, make the gaseous outflow from nuclear waste bin material hole B of internal of nuclear waste bin to remaining water heating makes its evaporation and discharge in the nuclear waste bin box, can ensure to discharge the ponding clean of in the box. Meanwhile, the humidity of the gas flowing out of the material hole B is detected, and the moisture content in the nuclear waste box body can be ensured to reach the relevant standards of radioactive waste outward transportation.
And after the water content in the nuclear waste bin box body reaches the relevant standard of radioactive waste outward transportation, the cut separation net is put back to the original position and is welded and fixed with the nuclear waste bin box body, the integrity of the surface of the nuclear waste bin box body cannot be damaged, the structural strength and the rigidity of the nuclear waste bin box body cannot be influenced, the rejection rate of the nuclear waste bin box body is reduced, and the effective utilization rate of resources is improved.
Preferably, the accumulated water on the separation net on the liquid level is pumped out before the separation net at the bottom of the nuclear waste box body is cut, so that the influence of the accumulated water on the operation of cutting the separation net is avoided.
Preferably, the humidity detection frequency of the gas flowing out of the material hole B is 30 minutes.
Preferably, adopt vacuum pump connection pipeline to extract ponding, for the mode that adopts the water pump to extract ponding, can prevent to burn out the pump because of the pump is done and then, also can pass through the higher negative pressure of vacuum pump simultaneously, the remaining moisture of reduction nuclear waste case box as far as possible to improve the efficiency of getting rid of ponding in the nuclear waste case box.
Preferably, when the accumulated water is pumped, one end of the water pumping pipeline is connected with the vacuum pump, and the other end of the water pumping pipe extends into the bottom of the water pumping hole, so that the accumulated water is pumped in the region formed by each two adjacent rib plates.
Preferably, the water pumping holes are rectangular holes so as to facilitate cutting operation and welding operation of the separation net.
Preferably, the size of the water pumping hole is 300mm multiplied by 935mm, so that accumulated water can be pumped in the area formed by each two adjacent rib plates.
Preferably, the spacer mesh is flattened before welding the cut spacer mesh.
Preferably, the size of the welding area of the separation net is larger than that of the water pumping hole, so that the separation net is prevented from being lifted up on the side edge when being pressed.
Preferably, the screen is cut by a grinding wheel cutting tool so as to reduce the influence of cutting on the screen.
The invention has the following advantages and beneficial effects:
1. according to the invention, part of the separation net is cut on the separation net at the bottom of the nuclear waste box body to form the water pumping hole, and the accumulated water at the bottom of the water pumping hole is pumped out to pump most of the accumulated water in the nuclear waste box body away, and the nuclear waste box body does not need to be turned over, so that the industrial risk of turning over the nuclear waste box body does not exist.
2. After no stranded rivers, let in hot-blastly through nuclear waste bin material hole A, make the gaseous outflow from nuclear waste bin material hole B of internal of nuclear waste bin to remaining water heating makes its evaporation and discharge in the nuclear waste bin box, can ensure to discharge the ponding clean of in the box.
3. The humidity of the gas flowing out of the material hole B is detected, and the moisture content in the nuclear waste box body can be ensured to reach the relevant standards of radioactive waste outward transportation.
4. After the water content in the nuclear waste bin box body reaches the relevant standard of radioactive waste outward transportation, the cut separation net is put back to the original position and is welded and fixed with the nuclear waste bin box body, the integrity of the surface of the nuclear waste bin box body cannot be damaged, the structural strength and the rigidity of the nuclear waste bin box body cannot be influenced, the rejection rate of the nuclear waste bin box body is reduced, and the effective utilization rate of resources is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic view of the present invention showing the removal of accumulated water and cutting of a spacer screen;
FIG. 2 is a schematic view of a drying and reinstalling spacer mesh according to the present invention;
fig. 3 is a schematic view of the screen of the present invention.
Names of various parts in the drawings:
1-nuclear waste box body, 2-pipeline, 3-vacuum pump, 4-cutting tool, 5-box body cover plate, 6-hot air interface, 7-material hole A, 8-material hole B, 9-hygrometer, 10-spot welding machine, 11-cut separation net, and 12-residual separation net.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
A method of removing standing water from the interior of a nuclear waste bin comprising the steps of:
opening a cover plate of the nuclear waste box body 1, and cutting part of the separation net on the separation net at the bottom of the nuclear waste box body 1 to form a water pumping hole;
pumping accumulated water at the bottom of the water pumping hole;
when no stranded liquid flows out, the cover plate of the nuclear waste box body 1 is covered;
introducing hot air through the nuclear waste box material hole A7, so that the gas in the nuclear waste box body 1 flows out from the nuclear waste box material hole B8;
detecting the humidity of the gas flowing out of the material hole B8;
when the water content of the gas flowing out of the material hole B8 is lower than 1%, opening the cover plate of the nuclear waste box body 1 again;
the cut-off separation net 11 is replaced, and the cut-off separation net 11 is welded and fixed with the nuclear waste bin body 1.
This embodiment is through cutting off some separation net on the separation net of nuclear waste case box 1 bottom to form the hole that draws water, and the ponding of extraction water pumping hole bottom, with most ponding with in the nuclear waste case box 1 are taken away, need not overturn nuclear waste case box 1, consequently do not have the industrial risk of upset nuclear waste case box 1.
After no stranded water flow, hot air is introduced through the nuclear waste tank material hole A7, so that gas in the nuclear waste tank body 1 flows out from the nuclear waste tank material hole B8, residual water in the nuclear waste tank body 1 is heated to be evaporated and discharged, and accumulated water in the tank body can be discharged completely. Meanwhile, the humidity of the gas flowing out of the material hole B8 is detected, and the moisture content in the nuclear waste box body 1 can be ensured to reach the relevant standards of radioactive waste outward transportation.
And after the water content in the nuclear waste bin box body 1 reaches the relevant standard of radioactive waste outward transportation, the cut separation net 11 is put back to the original position and is welded and fixed with the nuclear waste bin box body 1, the integrity of the surface of the nuclear waste bin box body 1 cannot be damaged, the structural strength and the rigidity of the nuclear waste bin box body 1 cannot be influenced, the rejection rate of the nuclear waste bin box body 1 is reduced, and the effective utilization rate of resources is improved.
Example 2
A method of removing standing water from the interior of a nuclear waste bin comprising the steps of:
opening a cover plate of the nuclear waste box body 1, and extracting accumulated water with the liquid level on the separation net to ensure that the liquid level of the accumulated water is the same as the height of the upper end of the separation net so as to avoid the influence of the accumulated water on the operation of cutting the separation net;
cutting off part of the separation net on the separation net at the bottom of the nuclear waste box body 1 to form water pumping holes;
pumping accumulated water at the bottom of the water pumping hole;
when no stranded liquid flows out, the cover plate of the nuclear waste box body 1 is covered;
introducing hot air through the nuclear waste box material hole A7, so that the gas in the nuclear waste box body 1 flows out from the nuclear waste box material hole B8;
detecting the humidity of the gas flowing out of the material hole B8;
when the water content of the gas flowing out of the material hole B8 is lower than 1%, opening the cover plate of the nuclear waste box body 1 again;
the cut-off separation net 11 is replaced, and the cut-off separation net 11 is welded and fixed with the nuclear waste bin body 1.
This embodiment is through cutting off some separation net on the separation net of nuclear waste case box 1 bottom to form the hole that draws water, and the ponding of extraction water pumping hole bottom, with most ponding with in the nuclear waste case box 1 are taken away, need not overturn nuclear waste case box 1, consequently do not have the industrial risk of upset nuclear waste case box 1.
After no stranded water flow, hot air is introduced through the nuclear waste tank material hole A7, so that gas in the nuclear waste tank body 1 flows out from the nuclear waste tank material hole B8, residual water in the nuclear waste tank body 1 is heated to be evaporated and discharged, and accumulated water in the tank body can be discharged completely. Meanwhile, the humidity of the gas flowing out of the material hole B8 is detected, and the moisture content in the nuclear waste box body 1 can be ensured to reach the relevant standards of radioactive waste outward transportation.
And after the water content in the nuclear waste bin box body 1 reaches the relevant standard of radioactive waste outward transportation, the cut separation net 11 is put back to the original position and is welded and fixed with the nuclear waste bin box body 1, the integrity of the surface of the nuclear waste bin box body 1 cannot be damaged, the structural strength and the rigidity of the nuclear waste bin box body 1 cannot be influenced, the rejection rate of the nuclear waste bin box body 1 is reduced, and the effective utilization rate of resources is improved.
Example 3
A method of removing standing water from the interior of a nuclear waste bin comprising the steps of:
opening a cover plate of a nuclear waste box body 1, and connecting a pipeline 2 with a vacuum pump 3 to extract accumulated water of which the liquid surface is positioned on a separation net so that the liquid surface of the accumulated water is as high as the upper end of the separation net to avoid the influence of the accumulated water on the operation of cutting the separation net;
cutting off part of the separation net on the separation net at the bottom of the nuclear waste box body 1 to form water pumping holes;
one end of a water pumping pipeline 2 is connected with a vacuum pump 3, the other end of the water pumping pipeline extends into the bottom of a water pumping hole, accumulated water is pumped in an area formed by every two adjacent rib plates, and then the accumulated water at the bottom of the water pumping hole is continuously pumped;
when no stranded liquid flows out, the cover plate of the nuclear waste box body 1 is covered;
introducing hot air through the nuclear waste box material hole A7, so that the gas in the nuclear waste box body 1 flows out from the nuclear waste box material hole B8;
detecting the humidity of the gas flowing out of the material hole B8;
when the water content of the gas flowing out of the material hole B8 is lower than 1%, opening the cover plate of the nuclear waste box body 1 again;
the cut-off separation net 11 is replaced, and the cut-off separation net 11 is welded and fixed with the nuclear waste bin body 1.
This embodiment is through cutting off some separation net on the separation net of nuclear waste case box 1 bottom to form the hole that draws water, and the ponding of extraction water pumping hole bottom, with most ponding with in the nuclear waste case box 1 are taken away, need not overturn nuclear waste case box 1, consequently do not have the industrial risk of upset nuclear waste case box 1.
After no stranded water flow, hot air is introduced through the nuclear waste tank material hole A7, so that gas in the nuclear waste tank body 1 flows out from the nuclear waste tank material hole B8, residual water in the nuclear waste tank body 1 is heated to be evaporated and discharged, and accumulated water in the tank body can be discharged completely. Meanwhile, the humidity of the gas flowing out of the material hole B8 is detected, and the moisture content in the nuclear waste box body 1 can be ensured to reach the relevant standards of radioactive waste outward transportation.
And after the water content in the nuclear waste bin box body 1 reaches the relevant standard of radioactive waste outward transportation, the cut separation net 11 is put back to the original position and is welded and fixed with the nuclear waste bin box body 1, the integrity of the surface of the nuclear waste bin box body 1 cannot be damaged, the structural strength and the rigidity of the nuclear waste bin box body 1 cannot be influenced, the rejection rate of the nuclear waste bin box body 1 is reduced, and the effective utilization rate of resources is improved.
Adopt 3 connecting tube of vacuum pump 2 to extract ponding, for the mode that adopts the water pump to extract ponding, can prevent to burn out the pump because of the pump is done and then, also can pass through the higher negative pressure of vacuum pump 3 simultaneously, the reduction as far as possible nuclear waste bin box 1 remaining moisture to improve the efficiency of getting rid of ponding in the nuclear waste bin box 1.
Preferably, the water pumping holes are rectangular holes so as to facilitate cutting operation and welding operation of the separation net.
Preferably, the size of the water pumping hole is 300mm multiplied by 935mm, so that accumulated water can be pumped in the area formed by each two adjacent rib plates.
Preferably, the screen is flattened before welding the cut screen 11.
Preferably, the size of the welding area of the separation net is larger than that of the water pumping hole, so that the separation net is prevented from being lifted up on the side edge when being pressed.
Preferably, the screen is cut by the abrasive wheel cutting tool 4 to reduce the influence of cutting on the screen. .
Example 4
A method of removing standing water from the interior of a nuclear waste bin comprising the steps of:
opening a cover plate of a nuclear waste box body 1, and connecting a pipeline 2 with a vacuum pump 3 to extract accumulated water of which the liquid surface is positioned on a separation net so that the liquid surface of the accumulated water is as high as the upper end of the separation net to avoid the influence of the accumulated water on the operation of cutting the separation net;
cutting off part of the separation net on the separation net at the bottom of the nuclear waste box body 1 to form water pumping holes;
one end of a water pumping pipeline 2 is connected with a vacuum pump 3, the other end of the water pumping pipeline extends into the bottom of a water pumping hole, accumulated water is pumped in an area formed by every two adjacent rib plates, and then the accumulated water at the bottom of the water pumping hole is continuously pumped;
when no stranded liquid flows out, the cover plate of the nuclear waste box body 1 is covered;
introducing hot air through the nuclear waste box material hole A7, so that the gas in the nuclear waste box body 1 flows out from the nuclear waste box material hole B8;
detecting the humidity of the gas flowing out of the material hole B8;
when the water content of the gas flowing out of the material hole B8 is lower than 1%, opening the cover plate of the nuclear waste box body 1 again;
the cut-off separation net 11 is replaced, and the cut-off separation net 11 is welded and fixed with the nuclear waste bin body 1.
This embodiment is through cutting off some separation net on the separation net of nuclear waste case box 1 bottom to form the hole that draws water, and the ponding of extraction water pumping hole bottom, with most ponding with in the nuclear waste case box 1 are taken away, need not overturn nuclear waste case box 1, consequently do not have the industrial risk of upset nuclear waste case box 1.
After no stranded water flow, hot air is introduced through the nuclear waste tank material hole A7, so that gas in the nuclear waste tank body 1 flows out from the nuclear waste tank material hole B8, residual water in the nuclear waste tank body 1 is heated to be evaporated and discharged, and accumulated water in the tank body can be discharged completely. Meanwhile, the humidity of the gas flowing out of the material hole B8 is detected, and the moisture content in the nuclear waste box body 1 can be ensured to reach the relevant standards of radioactive waste outward transportation.
And after the water content in the nuclear waste bin box body 1 reaches the relevant standard of radioactive waste outward transportation, the cut separation net 11 is put back to the original position and is welded and fixed with the nuclear waste bin box body 1, the integrity of the surface of the nuclear waste bin box body 1 cannot be damaged, the structural strength and the rigidity of the nuclear waste bin box body 1 cannot be influenced, the rejection rate of the nuclear waste bin box body 1 is reduced, and the effective utilization rate of resources is improved.
Adopt 3 connecting tube of vacuum pump 2 to extract ponding, for the mode that adopts the water pump to extract ponding, can prevent to burn out the pump because of the pump is done and then, also can pass through the higher negative pressure of vacuum pump 3 simultaneously, the reduction as far as possible nuclear waste bin box 1 remaining moisture to improve the efficiency of getting rid of ponding in the nuclear waste bin box 1.
And when the accumulated water in the pumping hole is pumped, one end of the pumping pipeline 2 is connected with the vacuum pump 3, and the other end of the pumping pipe extends into the bottom of the pumping hole, so that the accumulated water is pumped in the region formed by each two adjacent rib plates.
Example 5
A method of removing standing water from the interior of a nuclear waste bin comprising the steps of:
opening a cover plate of a nuclear waste box body 1, and connecting a pipeline 2 with a vacuum pump 3 to extract accumulated water of which the liquid surface is positioned on a separation net so that the liquid surface of the accumulated water is as high as the upper end of the separation net to avoid the influence of the accumulated water on the operation of cutting the separation net;
cutting a part of separation net on the geometric center of the separation net at the bottom of the nuclear waste box body 1 by adopting a grinding wheel cutting tool to form water pumping holes, wherein the water pumping holes are rectangular holes so as to facilitate cutting operation and welding operation of the separation net, and the size of each water pumping hole is 300mm multiplied by 935mm so as to ensure that accumulated water can be pumped in an area formed by each two adjacent rib plates;
one end of a water pumping pipeline 2 is connected with a vacuum pump 3, the other end of the water pumping pipeline extends into the bottom of a water pumping hole, accumulated water is pumped in an area formed by every two adjacent rib plates, and then the accumulated water at the bottom of the water pumping hole is continuously pumped;
when no stranded liquid flows out, the cover plate of the nuclear waste box body 1 is covered;
introducing hot air through the nuclear waste box material hole A7, so that the gas in the nuclear waste box body 1 flows out from the nuclear waste box material hole B8;
detecting the humidity of the gas flowing out of the material hole B8;
when the water content of the gas flowing out of the material hole B8 is lower than 1%, opening the cover plate of the nuclear waste box body 1 again;
and (3) putting the cut separation net 11 back to the original position, flattening the separation net, and welding and fixing the cut separation net 11 and the nuclear waste box body 1, wherein the size of the welding area of the separation net is larger than that of the water pumping hole so as to prevent the side edge of the separation net from upwarping when the separation net is pressed.
This embodiment is through cutting off some separation net on the separation net of nuclear waste case box 1 bottom to form the hole that draws water, and the ponding of extraction water pumping hole bottom, with most ponding with in the nuclear waste case box 1 are taken away, need not overturn nuclear waste case box 1, consequently do not have the industrial risk of upset nuclear waste case box 1.
After no stranded water flow, hot air is introduced through the nuclear waste tank material hole A7, so that gas in the nuclear waste tank body 1 flows out from the nuclear waste tank material hole B8, residual water in the nuclear waste tank body 1 is heated to be evaporated and discharged, and accumulated water in the tank body can be discharged completely. Meanwhile, the humidity of the gas flowing out of the material hole B8 is detected, and the moisture content in the nuclear waste box body 1 can be ensured to reach the relevant standards of radioactive waste outward transportation.
And after the water content in the nuclear waste bin box body 1 reaches the relevant standard of radioactive waste outward transportation, the cut separation net 11 is put back to the original position and is welded and fixed with the nuclear waste bin box body 1, the integrity of the surface of the nuclear waste bin box body 1 cannot be damaged, the structural strength and the rigidity of the nuclear waste bin box body 1 cannot be influenced, the rejection rate of the nuclear waste bin box body 1 is reduced, and the effective utilization rate of resources is improved.
Adopt 3 connecting tube of vacuum pump 2 to extract ponding, for the mode that adopts the water pump to extract ponding, can prevent to burn out the pump because of the pump is done and then, also can pass through the higher negative pressure of vacuum pump 3 simultaneously, the reduction as far as possible nuclear waste bin box 1 remaining moisture to improve the efficiency of getting rid of ponding in the nuclear waste bin box 1.
And when the accumulated water in the pumping hole is pumped, one end of the pumping pipeline 2 is connected with the vacuum pump 3, and the other end of the pumping pipe extends into the bottom of the pumping hole, so that the accumulated water is pumped in the region formed by each two adjacent rib plates.
Wherein, the abrasive wheel cutting tool, the spot welder and the vacuum pump are common tools and are easy to obtain.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method for removing accumulated water in a nuclear waste bin is characterized by comprising the following steps:
opening a cover plate (5) of the nuclear waste box body and cutting part of the separation net on the separation net at the bottom of the nuclear waste box body (1) to form a water pumping hole;
pumping accumulated water at the bottom of the water pumping hole;
when no stranded liquid flows out, the cover plate (5) of the nuclear waste box body is covered;
introducing hot air through the nuclear waste box material hole A (7) to enable gas in the nuclear waste box body (1) to flow out of the nuclear waste box material hole B (8);
detecting the humidity of the gas flowing out of the material hole B (8);
when the water content of the gas flowing out of the material hole B (8) is lower than 1%, opening the cover plate (5) of the nuclear waste tank body again;
and (3) replacing the cut separation net (11), and welding and fixing the cut separation net (11) and the nuclear waste box body (1).
2. Method for removing nuclear waste bin ponding according to claim 1, characterized in that ponding of the liquid level on the screen is extracted before cutting the screen at the bottom of the nuclear waste bin tank (1).
3. Method for removing nuclear waste bin ponding according to claim 1, characterized in that the humidity detection frequency of the gas exiting the hole B (8) is once in 30 minutes.
4. Method for removing nuclear waste bin ponding according to claim 1, characterized in that the ponding is extracted by means of a vacuum pump connection pipe (2).
5. The method for removing the nuclear waste bin accumulated water as claimed in claim 4, wherein one end of the water pumping pipeline (2) is connected with a vacuum pump and the other end of the water pumping pipeline extends into the bottom of the water pumping hole when the accumulated water is pumped.
6. The method for removing nuclear waste bin ponding of claim 1 wherein the pumping hole is a rectangular hole.
7. The method for removing nuclear waste bin ponding of claim 1 or 6 wherein the size of the pumping hole is 300mm x 935 mm.
8. Method for removing nuclear waste bin ponding according to claim 1, characterized in that the spacer mesh (11) is flattened before welding the cut spacer mesh.
9. The method for removing nuclear waste bin ponding of claim 1 wherein the size of the spacer mesh welding area is larger than the size of the pumping hole.
10. The method for removing nuclear waste bin ponding of claim 1 wherein the spacer mesh is cut with a wheel cutting tool.
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| JP2002156488A (en) * | 2000-11-21 | 2002-05-31 | Hitachi Ltd | Draying method for vessel and dryer |
| CN103277987A (en) * | 2013-05-24 | 2013-09-04 | 无锡华光锅炉股份有限公司 | Overall drying technology and tool structure of waste heat boiler heating surface module of gas turbine |
| CN106921116A (en) * | 2015-12-25 | 2017-07-04 | 天津市天云华联科技有限公司 | A kind of distribution box |
| CN206554566U (en) * | 2017-02-23 | 2017-10-13 | 苏州市八都建筑有限公司 | A kind of underground garage |
| CN107161461A (en) * | 2017-06-16 | 2017-09-15 | 涂高惠 | A kind of bamboo basket of drying function |
| CN209568292U (en) * | 2019-01-07 | 2019-11-01 | 祝彩连 | A kind of clothes drying apparatus |
| CN109499279A (en) * | 2019-01-10 | 2019-03-22 | 人民电器集团上海有限公司 | A kind of power equipment dehumidification device |
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