CN213231613U - In-pool ion exchange device of spent fuel pool - Google Patents
In-pool ion exchange device of spent fuel pool Download PDFInfo
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- CN213231613U CN213231613U CN202021722561.XU CN202021722561U CN213231613U CN 213231613 U CN213231613 U CN 213231613U CN 202021722561 U CN202021722561 U CN 202021722561U CN 213231613 U CN213231613 U CN 213231613U
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- exchange resin
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Abstract
The utility model discloses a pond internal ion exchange device for spent fuel pool, include: ion exchange resin post, water are introduced the case, and water is introduced the case and is provided with water tank entry, water tank export, and the water tank entry is the entry of the pond water in spentnuclear fuel pond, and the ion exchange resin post includes: ion exchange resin section of thick bamboo, set up first shrouding, the second shrouding at ion exchange resin section of thick bamboo both ends, ion exchange resin section of thick bamboo is used for holding ion exchange resin, is provided with the second shrouding opening on being provided with first shrouding opening, the second shrouding on the first shrouding, and the water tank export is connected with first shrouding opening, and second shrouding opening is used for discharging the water that has carried out ion exchange through ion exchange resin section of thick bamboo. The utility model discloses an ion exchange device arranges inside the pond, need not to carry the pond extrinsic cycle with the pond water in the weary fuel pond, can directly carry out the ion exchange in the weary fuel pond to the pond water and handle, satisfies the requirement of pond water treatment, the risk that the pond water leaked that has significantly reduced, reinforcing security.
Description
Technical Field
The utility model belongs to the technical field of nuclear fuel aftertreatment, concretely relates to ion exchange device in pond in spent fuel pond.
Background
At present, most of the spent fuel discharged from the nuclear power plant is stored in a nuclear power plant pool or an off-stack storage pool. The pool water in the spent fuel storage pool has radioactivity and needs to be purified periodically, and the pool water is treated by utilizing the ion exchange capacity of the ion exchange resin. Can effectively remove radioactive metal ions such as cesium and cobalt and ions such as fluorine and chlorine which accelerate the corrosion of stainless steel in the pool water, ensure that the radioactivity of the pool water does not exceed the limit value, and ensure the safety of workers. The ion exchange resin needs to be replaced periodically to ensure the removal efficiency of ions. The nuclear power station and the off-stack storage water tank usually adopt an ion exchanger arranged outside the tank to purify the water in the tank, and have the defects of large overhauling workload, large floor area, large leakage risk and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the above-mentioned not enough that exists among the prior art, provide an ion exchange device in spent fuel pool's pond, it has the advantage that the installation is easy and simple to handle, the energy demand is little, pollution control degree is good.
Solve the utility model discloses technical scheme that technical problem adopted provides a pond ion exchange device for spent fuel pond, include: ion exchange resin post, water are introduced the case, and water is introduced the case and is provided with water tank entry, water tank export, and the water tank entry is the entry of the pond water in spentnuclear fuel pond, and the ion exchange resin post includes: an ion exchange resin section of thick bamboo, set up first shrouding, the second shrouding at an ion exchange resin section of thick bamboo both ends, first shrouding, second shrouding are used for sealing an ion exchange resin section of thick bamboo both ends respectively, and an ion exchange resin section of thick bamboo is used for holding ion exchange resin, is provided with second shrouding opening on being provided with first shrouding opening on the first shrouding, the second shrouding, and the water tank export is connected with first shrouding opening, and second shrouding opening is used for discharging the water that has carried out ion exchange through an ion exchange resin section of thick bamboo.
Preferably, the water introduction tank is disposed above the ion exchange resin column.
Preferably, the in-tank ion exchange device for the spent fuel pool further comprises: the baffle is arranged outside the water introduction box, the water tank inlet is arranged on the side wall of the water introduction box, and the baffle is arranged above the water tank inlet.
Preferably, the tank inlets are at least two and are evenly distributed in a direction perpendicular to an axial direction in which water is introduced into the tank.
Preferably, the in-pool ion exchange device for the spent fuel pool further comprises: a pond water conveying mechanism for carrying pond water, pond water conveying mechanism includes: the rotating shaft penetrates through the wall of the water introducing box, and the impeller is connected with one end of the rotating shaft in the water introducing box.
Preferably, the in-pool ion exchange device for the spent fuel pool further comprises: and the driving mechanism is connected with the rotating shaft and is used for driving the rotating shaft to rotate.
Preferably, the drive mechanism is disposed above the water intake box.
Preferably, the in-pool ion exchange device for the spent fuel pool further comprises: and the grabbing part is arranged outside the ion exchange resin cylinder and is used for being matched with the grabbing component for hoisting to grab.
Preferably, the ion exchange resin cylinder is formed by detachably connecting at least two sections of ion exchange resin cylinders along the axial direction of the ion exchange resin cylinder.
Preferably, the in-pool ion exchange device for the spent fuel pool further comprises: set up the base that is used for supporting it below the ion exchange resin post, the base is for the box that is used for the drainage, and the base is provided with base entry, base export, and the base entry is connected with second shrouding opening, and the base export is used for carrying out the water discharge after the ion exchange through the ion exchange resin post.
Preferably, the in-pool ion exchange device for the spent fuel pool further comprises: an extension pipe connected with the outlet of the base.
Preferably, the in-pool ion exchange device for the spent fuel pool further comprises: and the first slide rail or the first slide way is arranged outside the ion exchange resin cylinder and is used for sliding in a matching way with the second slide way or the second slide way on the side wall of the spent fuel pool.
The utility model discloses a pond internal ion exchange device for spent fuel pool's beneficial effect lies in:
(1) the ion exchange device is arranged in the pool, so that the radioactive pool water in the spent fuel pool does not need to be conveyed to the outside of the pool for circulation, the ion exchange treatment can be directly carried out on the pool water in the spent fuel pool, the requirement of pool water treatment is met, the risk of pool water leakage is greatly reduced, and the safety is enhanced;
(2) the volume of the ion exchange device is reduced, and the overhaul workload, the irradiation capacity of operators, the occupied area and the capital construction amount can be obviously reduced;
(3) the ion exchange device has simple structure, flexible and reliable operation and low manufacturing cost, and can be widely applied to spent fuel storage pools.
Drawings
Fig. 1 is a schematic structural diagram of an external configuration of an in-pool ion exchange device for a spent fuel pool in embodiment 2 of the present invention;
fig. 2 is a partial longitudinal sectional view of the structure of the in-pool ion exchange device for a spent fuel pool in embodiment 2 of the present invention;
fig. 3 is a schematic structural diagram of an in-pool ion exchange device for a spent fuel pool according to embodiment 2 of the present invention for replacing ion exchange resin;
fig. 4 is a plan view of the in-pool ion exchange device for a spent fuel pool in embodiment 2 of the present invention.
1-a motor; 2-a baffle plate; 3-tank inlet; 4-water introduction tank; 5-an impeller; 6-ion exchange resin cartridge; 7-a base; 8-base outlet; 9-ion exchange resin; 10-an extension tube; 11-spent fuel assembly grippers; 12-ion exchange resin cartridge segmentation; 13-outlet of the water tank; 14-a rotating shaft; 15-base inlet; 16-water level; 17-a first closure plate; 18-a second closure plate; 19-a first closing plate opening; 20-second closing plate opening.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
Example 1
The embodiment provides a pond ion exchange device for spent fuel pond, includes: ion exchange resin post, water are introduced the case, and water is introduced the case and is provided with water tank entry, water tank export, and the water tank entry is the entry of the pond water in spentnuclear fuel pond, and the ion exchange resin post includes: an ion exchange resin section of thick bamboo, set up first shrouding, the second shrouding at an ion exchange resin section of thick bamboo both ends, first shrouding, second shrouding are used for sealing an ion exchange resin section of thick bamboo both ends respectively, and an ion exchange resin section of thick bamboo is used for holding ion exchange resin, is provided with second shrouding opening on being provided with first shrouding opening on the first shrouding, the second shrouding, and the water tank export is connected with first shrouding opening, and second shrouding opening is used for discharging the water that has carried out ion exchange through an ion exchange resin section of thick bamboo.
The beneficial effect of the in-pool ion exchange device for the spent fuel pool of the embodiment lies in:
(1) the ion exchange device is arranged in the pool, so that the radioactive pool water in the spent fuel pool does not need to be conveyed to the outside of the pool for circulation, the ion exchange treatment can be directly carried out on the pool water in the spent fuel pool, the requirement of pool water treatment is met, the risk of pool water leakage is greatly reduced, and the safety is enhanced;
(2) the volume of the ion exchange device is reduced, and the overhaul workload, the irradiation capacity of operators, the occupied area and the capital construction amount can be obviously reduced;
(3) the ion exchange device has simple structure, flexible and reliable operation and low manufacturing cost, and can be widely applied to spent fuel storage pools.
Example 2
As shown in fig. 1 to 4, the present embodiment provides an in-pool ion exchange device for a spent fuel pool, including: ion exchange resin post, water introduction case 4 is provided with water tank entry 3, water tank export 13, and water tank entry 3 is the entry of the pond water in spent fuel pond, and the ion exchange resin post includes: ion exchange resin section of thick bamboo 6, set up the first shrouding 17 at 6 both ends of ion exchange resin section of thick bamboo, second shrouding 18, first shrouding 17, second shrouding 18 is used for respectively sealing 6 both ends of ion exchange resin section of thick bamboo, ion exchange resin section of thick bamboo 6 is used for holding ion exchange resin 9, be provided with first shrouding opening 19 on the first shrouding 17, be provided with second shrouding opening 20 on the second shrouding 18, water tank export 13 is connected with first shrouding opening 19, second shrouding opening 20 is used for discharging the water that has carried out ion exchange through ion exchange resin section of thick bamboo 6. Through the first closing plate opening 19, the pool water of the spent fuel pool flows into the ion exchange resin cartridge 6 for purification, and is discharged through the first closing plate opening 19. Specifically, in this embodiment, the first sealing plate 17 and the second sealing plate 18 are welded to both ends of the ion exchange resin cartridge 6, respectively.
Preferably, the water introduction tank 4 is disposed above the ion exchange resin column.
Preferably, the in-tank ion exchange device for the spent fuel pool further comprises: a baffle 2 arranged outside the water introducing box 4, a water tank inlet 3 arranged on the side wall of the water introducing box 4, and the baffle 2 arranged above the water tank inlet 3. When the ion exchange unit is in use, the surface 16 of the pool water in the pool is above the baffle 2, and the baffle 2 prevents the pool water from swirling when it enters the tank inlet 3.
Preferably, the number of the tank inlets 3 is at least two, and the tank inlets 3 are uniformly distributed in a direction perpendicular to the axial direction of the water introduction tank 4.
Preferably, the in-pool ion exchange device for the spent fuel pool further comprises: a pond water conveying mechanism for carrying pond water, pond water conveying mechanism includes: a rotating shaft 14 and an impeller 5, wherein the rotating shaft 14 penetrates through the wall of the water introducing box 4, and the impeller 5 is connected with one end of the rotating shaft 14 positioned in the water introducing box 4. The rotary shaft 14 is disposed along the axial direction of the ion exchange resin cartridge 6, and the impeller 5 is located inside the water introduction tank 4.
Preferably, the in-pool ion exchange device for the spent fuel pool further comprises: and the driving mechanism is connected with the rotating shaft 14 and is used for driving the rotating shaft to rotate.
Preferably, the drive mechanism is disposed above the water intake box 4. Specifically, the driving mechanism is a motor 1. The motor 1 is connected to the shaft 14 in the axial direction of the ion exchange resin cartridge 6, and the impeller 5 is driven to rotate by the rotation of the motor 1, and the rotation of the impeller 5 sucks water from the sump into the water introduction tank 4 through the tank inlet 3. When the ion exchange device is used, the motor 1 is positioned on the water surface 16, and when the motor 1 fails, the maintenance or the replacement can be directly carried out. During the period, the power of the impeller 5 is lost, and the shell-and-tube heat exchanger in the water pool can cool the water in the pool by a natural convection mode.
Preferably, the in-pool ion exchange device for the spent fuel pool further comprises: and the grabbing part is arranged outside the ion exchange resin cylinder 6 and is used for being matched with the grabbing component for hoisting to grab.
The spent fuel assembly gripper 11 is located above the ion exchange unit and is connected to a crane. The spent fuel assembly gripper 11 is a component gripper, and is not required to be manufactured independently, so that the working efficiency is improved, and the manufacturing cost is saved. Snatch the portion of snatching through the spentnuclear fuel subassembly gripping apparatus 11, ion exchange device upper portion, ion exchange resin section of thick bamboo 6, inside ion exchange resin 9 all can directly through the crane dismouting or change, and is easy and simple to handle, greatly reduced work load.
Preferably, the ion exchange resin cartridge 6 is formed by detachably connecting at least two ion exchange resin cartridge segments 12 along the axial direction of the ion exchange resin cartridge 6, thereby reducing the length of the ion exchange device during transportation. The number of the sections of the ion exchange resin cylinder sections 12 is set according to the depth of the spent fuel pool, when the ion exchange device is used, the ion exchange device is positioned on the side wall of the spent fuel pool, the number of the heat exchange devices in the pool is set according to the volume condition of the pool water, and the civil engineering quantity is greatly reduced. The multi-section ion exchange resin cylinder is segmented into 12 sections, so that the crane can conveniently lift the cylinder during maintenance.
Preferably, the in-pool ion exchange device for the spent fuel pool further comprises: set up the base 7 that is used for supporting it below the ion exchange resin post, base 7 is the box that is used for the drainage, and base 7 is provided with base entry 3, base export 8, and base entry 3 is connected with second shrouding opening 20, and base export 8 is used for carrying out the water discharge after the ion exchange through the ion exchange resin post. The base 7 is arranged below the ion exchange resin column. The number of the base outlets 8 is at least two, and the base outlets 8 are uniformly distributed along the direction perpendicular to the axial direction of the base 7.
Preferably, the in-pool ion exchange device for the spent fuel pool further comprises: an extension tube 10 connected to the base outlet 8. The ion exchanged pond water is sent to a place where it should be through the extension pipe 10.
Preferably, the in-pool ion exchange device for the spent fuel pool further comprises: and the first slide rail or the first slide way is arranged outside the ion exchange resin cylinder 6 and is used for sliding in a matching way with the second slide way or the second slide rail on the side wall of the spent fuel pool. The ion exchange device is fixed on the side wall of the spent fuel pool, the base 7 is fixed at the bottom of the pool and slides in a matching way through the first slide rail and the second slide rail or the first slide rail and the second slide rail so as to be convenient for installing and fixing the ion exchange device.
The beneficial effect of the in-pool ion exchange device for the spent fuel pool of the embodiment lies in:
(1) the ion exchange device is arranged in the pool, so that the radioactive pool water in the spent fuel pool does not need to be conveyed to the outside of the pool for circulation, the ion exchange treatment can be directly carried out on the pool water in the spent fuel pool, the requirement of pool water treatment is met, the risk of pool water leakage is greatly reduced, and the safety is enhanced;
(2) the volume of the ion exchange device is reduced, and the overhaul workload, the irradiation capacity of operators, the occupied area and the capital construction amount can be obviously reduced;
(3) the ion exchange device has simple structure, flexible and reliable operation and low manufacturing cost, and can be widely applied to spent fuel storage pools.
It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (12)
1. A pond ion exchange device for a spent fuel pond, comprising: ion exchange resin post, water are introduced the case, and water is introduced the case and is provided with water tank entry, water tank export, and the water tank entry is the entry of the pond water in spentnuclear fuel pond, and the ion exchange resin post includes: ion exchange resin section of thick bamboo, set up first shrouding, the second shrouding at ion exchange resin section of thick bamboo both ends, ion exchange resin section of thick bamboo is used for holding ion exchange resin, is provided with the second shrouding opening on being provided with first shrouding opening, the second shrouding on the first shrouding, and the water tank export is connected with first shrouding opening, and second shrouding opening is used for discharging the water that has carried out ion exchange through ion exchange resin section of thick bamboo.
2. The in-pool ion exchange device for a spent fuel pool according to claim 1, wherein the water introduction tank is disposed above the ion exchange resin column.
3. The in-pool ion exchange device for a spent fuel pool according to claim 1, further comprising: the baffle is arranged outside the water introduction box, the water tank inlet is arranged on the side wall of the water introduction box, and the baffle is arranged above the water tank inlet.
4. The in-pool ion exchange device for a spent fuel pool according to claim 1, wherein the number of the tank inlets is at least two, and the tank inlets are uniformly distributed in a direction perpendicular to an axial direction of the water introduction tank.
5. The in-pool ion exchange device for a spent fuel pool according to claim 1, further comprising: a pond water conveying mechanism for carrying pond water, pond water conveying mechanism includes: the rotating shaft penetrates through the wall of the water introducing box, and the impeller is connected with one end of the rotating shaft in the water introducing box.
6. The in-pool ion exchange device for a spent fuel pool according to claim 5, further comprising: and the driving mechanism is connected with the rotating shaft and is used for driving the rotating shaft to rotate.
7. The in-pool ion exchange device for a spent fuel pool according to claim 6, wherein the driving mechanism is disposed above the water introduction tank.
8. The in-pool ion exchange device for a spent fuel pool according to claim 1, further comprising: and the grabbing part is arranged outside the ion exchange resin cylinder and is used for being matched with the grabbing component for hoisting to grab.
9. The in-pool ion exchange device for the spent fuel pool according to any one of claims 1 to 8, wherein the ion exchange resin cylinder is formed by detachably connecting at least two sections of ion exchange resin cylinders along the axial direction of the ion exchange resin cylinder.
10. The in-pool ion exchange device for the spent fuel pool according to any one of claims 1 to 8, further comprising: set up the base that is used for supporting it below the ion exchange resin post, the base is for the box that is used for the drainage, and the base is provided with base entry, base export, and the base entry is connected with second shrouding opening, and the base export is used for carrying out the water discharge after the ion exchange through the ion exchange resin post.
11. The in-pool ion exchange device for a spent fuel pool according to claim 10, further comprising: an extension pipe connected with the outlet of the base.
12. The in-pool ion exchange device for the spent fuel pool according to any one of claims 1 to 8, further comprising: and the first slide rail or the first slide way is arranged outside the ion exchange resin cylinder and is used for sliding in a matching way with the second slide way or the second slide way on the side wall of the spent fuel pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021722561.XU CN213231613U (en) | 2020-08-18 | 2020-08-18 | In-pool ion exchange device of spent fuel pool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021722561.XU CN213231613U (en) | 2020-08-18 | 2020-08-18 | In-pool ion exchange device of spent fuel pool |
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| CN213231613U true CN213231613U (en) | 2021-05-18 |
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| CN202021722561.XU Active CN213231613U (en) | 2020-08-18 | 2020-08-18 | In-pool ion exchange device of spent fuel pool |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113421672A (en) * | 2021-06-11 | 2021-09-21 | 中国核电工程有限公司 | In-pool split equipment for spent fuel storage pool and spent fuel storage system |
| CN113838590A (en) * | 2021-09-18 | 2021-12-24 | 中国核电工程有限公司 | Ion purifier, hoisting tool, spent fuel storage system and purification method |
| CN115448418A (en) * | 2022-09-13 | 2022-12-09 | 上海阿波罗机械股份有限公司 | Ion exchanger and installation device thereof |
-
2020
- 2020-08-18 CN CN202021722561.XU patent/CN213231613U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113421672A (en) * | 2021-06-11 | 2021-09-21 | 中国核电工程有限公司 | In-pool split equipment for spent fuel storage pool and spent fuel storage system |
| CN113421672B (en) * | 2021-06-11 | 2024-01-19 | 中国核电工程有限公司 | In-cell separation device for spent fuel storage pool and spent fuel storage system |
| CN113838590A (en) * | 2021-09-18 | 2021-12-24 | 中国核电工程有限公司 | Ion purifier, hoisting tool, spent fuel storage system and purification method |
| CN113838590B (en) * | 2021-09-18 | 2023-10-24 | 中国核电工程有限公司 | Ion purifier, lifting tool, spent fuel storage system and purification method |
| CN115448418A (en) * | 2022-09-13 | 2022-12-09 | 上海阿波罗机械股份有限公司 | Ion exchanger and installation device thereof |
| CN115448418B (en) * | 2022-09-13 | 2023-08-29 | 上海阿波罗机械股份有限公司 | Ion exchanger and installation device thereof |
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