CN117225008B - Stirring device, spent fuel post-treatment system and stirring method - Google Patents
Stirring device, spent fuel post-treatment system and stirring method Download PDFInfo
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- CN117225008B CN117225008B CN202311498706.0A CN202311498706A CN117225008B CN 117225008 B CN117225008 B CN 117225008B CN 202311498706 A CN202311498706 A CN 202311498706A CN 117225008 B CN117225008 B CN 117225008B
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- 238000003756 stirring Methods 0.000 title claims abstract description 115
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000002915 spent fuel radioactive waste Substances 0.000 title claims abstract description 9
- 238000001816 cooling Methods 0.000 claims description 44
- 238000007789 sealing Methods 0.000 claims description 39
- 239000002826 coolant Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 12
- 239000000126 substance Substances 0.000 description 10
- 239000007788 liquid Substances 0.000 description 7
- 239000002901 radioactive waste Substances 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 230000002285 radioactive effect Effects 0.000 description 3
- 239000000443 aerosol Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005202 decontamination Methods 0.000 description 2
- 230000003588 decontaminative effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000003758 nuclear fuel Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The invention discloses a stirring device, a spent fuel aftertreatment system and a stirring method, which are used for reducing the swing of a pump impeller (3), ensuring the stirring effect of the pump impeller (3) and reducing the failure rate of the stirring device. The stirring device comprises a sleeve (6), a driving part (1), a stirring shaft (2) and a pump wheel (3). The sleeve (6) is fixed on the shielding layer of the equipment room (4), and the bottom end of the sleeve (6) penetrates through the shielding layer of the equipment room (4) and then extends to the top end of the mixer-settler (5). The driving part (1) is arranged in the sleeve (6) and is positioned at the bottom of the sleeve (6). The stirring shaft (2) is positioned in the equipment room (4), and one end of the stirring shaft is connected with the driving component (1). The other end of the stirring shaft (2) penetrates out of the bottom of the sleeve (6) and enters the mixer-settler (5) to be connected with the pump wheel (3).
Description
Technical Field
The invention particularly relates to a stirring device, a spent fuel post-treatment system and a stirring method.
Background
The extraction separation is a core process link of a nuclear fuel post-treatment plant, the mixer-settler is one of main equipment for realizing a continuous extraction separation process of nuclear fuel post-treatment, and a stirring device in the mixer-settler is a key equipment for realizing full mixing of two-phase feed liquid of the mixer-settler.
In the related art, as shown in fig. 1, a stirring device generally includes a driving part 1, a stirring shaft 2, and a pump impeller 3. The driving part 1 is arranged outside the equipment room 4, and drives the pump wheel 3 to work through the stirring shaft 2 so as to stir the materials in the mixer-settler 5.
However, the above arrangement will result in a longer distance (about 3 m) between the driving part 1 and the pump wheel 3, and a longer stirring shaft 2 is required to transmit power, resulting in more power loss of the driving part 1; and the end of the stirring shaft 2 can generate radial swing due to the arrangement, the pump wheel 3 is driven to swing, the stirring effect of the pump wheel 3 is affected, after a period of time, the stirring device is blocked, so that the mixer-settler 5 is not planned to stop, the mixer-settler 5 needs to be overhauled, the mixer-settler 5 needs to be cleaned in the overhauling process, and the emission of radioactive waste liquid and the illuminated dose of personnel can be greatly increased. In order to ensure that the maintenance personnel are not at risk of dose exposure, measures for preventing radioactive aerosols are required in the maintenance process, and the corresponding production of radioactive solid wastes is increased by the measures. In addition, since the single stirring device is expensive, if the frequency of faults is high, the annual maintenance and replacement costs are high.
Disclosure of Invention
The invention aims to solve the technical problems of the related art, and provides a stirring device, a spent fuel aftertreatment system and a stirring method, which are used for reducing the swing of a pump impeller, ensuring the stirring effect of the pump impeller and reducing the failure rate of the stirring device.
In a first aspect, an embodiment of the present invention provides a stirring device including a sleeve, a drive member, a stirring shaft, and a pump impeller. The sleeve is fixed on the shielding layer of the equipment room, and the bottom end of the sleeve penetrates through the shielding layer of the equipment room and then extends to the top end of the mixer-settler. A drive member is disposed within the sleeve at a bottom of the sleeve. The stirring shaft is positioned in the equipment chamber, and one end of the stirring shaft is connected with the driving component. The other end of the stirring shaft penetrates out of the bottom of the sleeve and enters the mixer-settler to be connected with the pump wheel.
According to the stirring device provided by the embodiment of the invention, the sleeve is fixed on the shielding layer of the equipment room, the bottom end of the sleeve penetrates through the shielding layer of the equipment room and then extends to the top end of the mixer-settler, so that the stability of the sleeve can be kept through the equipment room and the mixer-settler, and further after the driving part is arranged in the sleeve, the stability of the driving part can be kept, the running stability of the driving part is improved, and the driving part can stably output power to the pump wheel. By arranging the driving part at the bottom of the sleeve, the distance between the driving part and the pump wheel can be reduced, compared with the related art, the length of the stirring shaft can be reduced, so that the loss of the power of the driving part when being transmitted to the pump wheel can be reduced, and the energy consumption can be reduced; and through above-mentioned setting, can also reduce the terminal radial swing that produces of (mixing) shaft, be favorable to guaranteeing the stirring stability and the stirring effect of pump impeller, reduced agitating unit's fault rate to reduce the probability that the mixing and clarifying tank takes place the unplanned parking, can avoid increasing the emission and the personnel of the radioactive waste liquid that overhauls the in-process to the mixing and clarifying tank and receive the dose, and avoid increasing the required cost of maintenance after the parking.
In some embodiments, the sleeve has a length ranging from: 1-5 m, and/or the inner ring size range of the sleeve is: 0.1 to 0.5m.
In some embodiments, the distance between the center of the drive member and the bottom end of the sleeve is less than or equal to one third of the sleeve length, and/or the length of the stirring shaft is less than or equal to 1m.
In some embodiments, the stirring device further comprises a first sealing member, a shielding cover plate, and a second sealing member. The first sealing component is sleeved on the sleeve and is used for sealing a gap between the sleeve and the shielding layer of the equipment room. The shielding cover plate is arranged at one end of the sleeve, which is positioned outside the equipment chamber, and is used for sealing one end of the sleeve, which is positioned outside the equipment chamber; and the outgoing line of the driving component passes through the shielding cover plate to be communicated with the outside. The second sealing component is sleeved on the outgoing line of the driving component and is used for sealing a gap between the outgoing line of the driving component and the shielding cover plate.
In some embodiments, the stirring device further comprises a cooling tube and a third sealing member. The cooling pipe passes through the shielding cover plate and stretches into the sleeve to convey cooling medium into the sleeve. And the third sealing component is sleeved on the cooling pipe and is used for sealing a gap between the cooling pipe and the shielding cover plate.
In some embodiments, the cooling medium comprises compressed air. The pressure range of the compressed air is as follows: 0.1MPa to 0.3 MPa; and/or, the temperature range of the compressed air is as follows: 10 ℃ to 30 ℃.
In some embodiments, the drive component comprises a short axis variable frequency motor.
In a second aspect, the embodiment of the invention also provides a spent fuel post-treatment system, which comprises a heavy phase storage tank, a light phase storage tank, a mixer-settler and the stirring device, wherein the mixer-settler is respectively communicated with the heavy phase storage tank and the light phase storage tank and is used for clarifying after mixing two-phase materials.
In a third aspect, an embodiment of the present invention further provides a method for stirring a mixture in a mixer-settler, including: fixing the sleeve on the shielding layer of the equipment room, and enabling the bottom end of the sleeve to extend to the top end of the mixer-settler after penetrating through the shielding layer of the equipment room; mounting a drive member at a bottom portion within the sleeve; installing a stirring shaft, wherein one end of the stirring shaft is connected with the driving part, and the other end of the stirring shaft penetrates out of the bottom of the sleeve and enters the mixer-settler to be connected with a pump wheel; and starting the driving part, and driving the pump wheel to operate through the stirring shaft.
In some embodiments, after installing the stirring shaft, before activating the drive member, the stirring method further comprises: installing a cooling pipe, and enabling the cooling pipe to extend into the sleeve; and conveying a cooling medium into the cooling pipe.
The spent fuel aftertreatment system and the stirring method of the mixture in the mixer-settler provided by the embodiment of the invention have the same beneficial effects as the stirring device, and are not described in detail herein.
Drawings
Fig. 1: is a structural diagram of a stirring device in the related art;
fig. 2: the structure diagram of the stirring device is provided;
fig. 3: is a partial structure diagram of a stirring device in an embodiment of the invention.
Description of the embodiments
The present invention will be described in further detail below with reference to the drawings and examples for better understanding of the technical scheme of the present invention to those skilled in the art.
Example 1
As shown in fig. 2, an embodiment of the present invention provides a stirring device for a mixer-settler 5, which comprises a sleeve 6, a driving part 1, a stirring shaft 2 and a pump wheel 3. The sleeve 6 is fixed on the shielding layer of the equipment room 4, and the bottom end of the sleeve 6 penetrates through the shielding layer of the equipment room 4 and then extends to the top end of the mixer-settler 5. The drive member 1 is arranged within the sleeve 6 and at the bottom of the sleeve 6. The stirring shaft 2 is located in the equipment room 4, and one end thereof is connected with the driving part 1. The other end of the stirring shaft 2 passes through the bottom of the sleeve 6 and enters the mixer-settler 5 to be connected with the pump wheel 3.
In some embodiments, the drive component 1 comprises a short axis variable frequency motor.
The motor shaft of the short-shaft variable frequency motor is shorter, so that the power output by the motor shaft is stable, and the power is transmitted to the pump impeller 3 through the stirring shaft 2, so that the running stability of the pump impeller 3 is maintained, and the stirring effect of the pump impeller 3 is improved.
The rotation speed of the short-shaft variable frequency motor is adjustable, and the rotation speed of the short-shaft variable frequency motor can be flexibly adjusted according to the types or states of materials in the mixer-settler 5, so that the rotation speed of the pump wheel 3 is adjusted, and the application scene of the stirring device can be improved.
The device chamber 4 may be a hot chamber, for example.
Illustratively, the material of the sleeve 6 includes a corrosion resistant material.
For example, the material of the sleeve 6 may be corrosion resistant stainless steel, which may facilitate handling and decontamination of the sleeve 6.
By fixing the sleeve 6 to the shielding layer of the equipment room 4 and extending the bottom end of the sleeve 6 to the top end of the mixer-settler 5 after passing through the shielding layer of the equipment room 4, the stability of the sleeve 6 can be maintained by the equipment room 4 and the mixer-settler 5, and further after the driving part 1 is arranged in the sleeve 6, the stability of the driving part 1 can be maintained, the running stability of the driving part 1 can be improved, and the driving part 1 can stably output power to the pump wheel 3. By disposing the driving part 1 at the bottom of the sleeve 6, the distance between the driving part 1 and the pump impeller 3 can be reduced, and compared with the above-described related art, the length of the stirring shaft 2 can be reduced, and thus the loss of the power of the driving part 1 when being transmitted to the pump impeller 3 can be reduced, which is advantageous in reducing the power consumption; moreover, through the arrangement, radial swing generated by the tail end of the stirring shaft 2 can be reduced, stirring stability and stirring effect of the pump wheel 3 are guaranteed, and the failure rate of the stirring device is reduced, so that the probability of unplanned parking of the mixer-settler 5 is reduced, the discharge amount of radioactive waste liquid and personnel illuminated dose in the process of overhauling the mixer-settler 5 can be prevented from being increased, and the cost required for overhauling after the parking is prevented from being increased.
In some embodiments, the length of sleeve 6 ranges from: 1 to 5m.
For example, the sleeve 6 may have a length of 1m, 3m, 5m, or the like.
It will be appreciated that the shorter the length of the sleeve 6, the greater the fixing strength of the sleeve 6 and the greater the stability, and the vibration of the sleeve 6 due to the operation of the driving part 1 can be avoided, and therefore, the driving part 1 provided in the sleeve 6 can be ensured to stably output power to the pump impeller 3.
In some embodiments, the distance between the centre of the drive member 1 and the bottom end of the sleeve 6 is less than or equal to one third of the length of the sleeve 6.
Illustratively, in the case of a sleeve 6 of length 3m, the distance between the centre of the driving member 1 and the bottom end of the sleeve 6 is less than or equal to 1m; in the case where the length of the sleeve 6 is 4.5m, the distance between the center of the driving part 1 and the bottom end of the sleeve 6 is less than or equal to 1.5m. Of course, the length of the sleeve 6 may be other lengths, which are not illustrated here.
Through the arrangement, the position of the driving part 1 can be ensured to be close to the bottom end of the sleeve 6, thus the distance between the driving part 1 and the pump wheel 3 can be reduced, the length of the stirring shaft 2 can be reduced, the radial swing generated by the tail end of the stirring shaft 2 is reduced, the stirring stability and stirring effect of the pump wheel 3 are ensured, the failure rate of the stirring device is reduced, the probability of unplanned parking of the mixer-settler 5 is reduced, the discharge amount of radioactive waste liquid and personnel illuminated dose in the overhaul process of the mixer-settler 5 can be prevented from being increased, and the cost required by overhaul after parking is prevented from being increased.
In some embodiments, the inner ring size range of the sleeve 6 is: 0.1 to 0.5m.
The inner ring size of the sleeve 6, i.e. the size of the diameter of the inner ring of the sleeve 6, may be 0.1m, 0.3m or 0.5m etc.
It will be appreciated that in the case of a smaller inner ring size of the sleeve 6, the strength of the sleeve 6 may be ensured, avoiding deformation of the sleeve 6 and thus ensuring stability of the drive member 1 located within the sleeve 6 during operation.
In some embodiments, the length of the stirring shaft 2 is less than or equal to 1m.
Illustratively, the length of the stirring shaft 2 may be 1m, 0.6m or 0.4m.
Through the arrangement, the length of the stirring shaft 2 is ensured to be smaller, the power transmission loss of the component 1 can be driven, radial swing generated at the tail end of the stirring shaft 2 is reduced, the stirring stability and the stirring effect of the pump wheel 3 are ensured, and the failure rate of the stirring device is reduced.
In some embodiments, as shown in fig. 2 and 3, the stirring device further comprises a first sealing member 7, a shielding cover plate 8 and a second sealing member 9. A first sealing member 7 is fitted over the sleeve 6 for sealing a gap between the sleeve 6 and the shielding layer of the device chamber 4. The shielding cover plate 8 is arranged at one end of the sleeve 6 outside the equipment room 4 in a covering manner and is used for sealing one end of the sleeve 6 outside the equipment room 4; the lead wires 11 of the driving part 1 pass through the shield cover 8 to communicate with the outside. The second sealing member 9 is sleeved on the outgoing line 11 of the driving member 1, and is used for sealing a gap between the outgoing line of the driving member 1 and the shielding cover plate 8.
The first sealing member 7 may comprise a sealing ring, for example.
Illustratively, the material of the first sealing member 7 may include high density silicone, polyethylene, or the like.
By providing the first sealing member 7, leakage of the substance in the device chamber 4 from the gap between the sleeve 6 and the shielding layer of the device chamber 4 can be avoided.
By providing the shielding cover plate 8, leakage of the substance in the device chamber 4 from the sleeve 6 can be avoided.
The outlet 11 of the drive component 1 can be connected to the main body of the drive component 1 by means of a quick-connect plug, for example.
The second sealing member 9 may comprise a sealing ring, for example.
Illustratively, the material of the second sealing member 9 may include high density silicone, polyethylene, or the like.
By providing the second sealing member 9, it is possible to avoid leakage of the substance in the equipment room 4 from the gap between the shield cover 8 and the lead-out wire 11 of the driving member 1 while ensuring communication between the lead-out wire 11 of the driving member 1 and the outside.
By the above arrangement, good sealing performance of the device chamber 4 can be ensured, and leakage of the substance in the device chamber 4 to the outside can be avoided.
In some embodiments, as shown in fig. 2 and 3, the stirring device further comprises a cooling tube 10 and a third sealing member 20. The cooling tube 10 passes through the shielding cover 8 and protrudes into the sleeve 6 for feeding a cooling medium into the sleeve 6. The third sealing member 20 is sleeved on the cooling pipe 10, and is used for sealing a gap between the cooling pipe 10 and the shielding cover plate 8.
Illustratively, the end of the cooling tube 10 outside the sleeve 6 may be connected to an external pipe by a quick-connect plug, which facilitates disassembly of the cooling tube 10 for servicing the drive member 1 and extraction of the cooling tube 10 outside the equipment room 4.
Illustratively, the outside diameter dimensions of the cooling tube 10 range from: DN 10-DN 20, so that the inner diameter of the cooling pipe 10 is large enough, and sufficient cooling medium can be conveyed to cool the driving part 1.
Illustratively, the material of the cooling tube 10 includes a corrosion resistant material, such as corrosion resistant stainless steel, to facilitate handling and decontamination of the cooling tube 10.
The third sealing member 20 may include a sealing ring, for example.
Illustratively, the material of the third sealing member 20 may include high density silicone, polyethylene, and the like.
Through setting up cooling tube 10, can dispel the heat for drive part 1 through the coolant that carries in the cooling tube 10, be favorable to keeping the stability when drive part 1 operates, reduce the probability that drive part 1 breaks down, prolong drive part 1's life. By providing the third sealing member 20, leakage of the substance in the equipment room 4 from the gap between the cooling pipe 10 and the shield cover plate 8 can be avoided.
In some embodiments, as shown in fig. 2, the outlet 10A of the cooling tube 10 is directed towards the drive member 1.
Illustratively, the upper end surface of the driving part 1 is provided with an annular bracket, and a circular expansion pipe head is arranged outside the outlet 10A of the cooling pipe 10 (or the shape of the outer side of the outlet 10A of the cooling pipe 10 is not limited, but is matched with the inner structural dimension of the annular bracket of the upper end surface of the driving part 1), so that the cooling pipe 10 is conveniently inserted on the annular bracket of the upper end surface of the driving part 1 in a long distance.
By the arrangement, the cooling medium conveyed in the cooling pipe 10 can directly blow the driving part 1, and the effect of radiating and cooling the driving part 1 by the cooling medium conveyed in the cooling pipe 10 can be improved.
In some embodiments, the cooling medium comprises compressed air.
As shown in fig. 2, the sleeve 6 is provided with ventilation holes 6A at a portion between the driving member 1 and the pump impeller 3.
After the cooling of the driving part 1, the compressed air in the cooling pipe 10 can enter the equipment room 4 through the air holes 6A, so that air convection is formed in the sleeve 6, the radioactive aerosol in the sleeve 6 flows into the equipment room 4, and substances in the equipment room 4 are further prevented from leaking out of the equipment room 4 through the sleeve 6.
In some examples, the pressure range of the compressed air is: 0.1-0.3 MPa.
The pressure of the compressed air may be, for example, 0.1MPa, 0.2MPa, 0.3MPa, or the like.
By the above arrangement, after the compressed air is sprayed out from the outlet 10A of the cooling pipe 10, the volume of the compressed air expands and absorbs part of heat, and the compressed air can form high air pressure above the driving part 1, so that the air above the driving part 1 flows into the equipment room 4, the substances in the sleeve 6 are driven to flow into the equipment room 4, and the substances in the equipment room 4 can be prevented from leaking to the outside of the equipment room 4 through the sleeve 6.
In some examples, the temperature range of the compressed air is: 10 ℃ to 30 ℃.
The temperature of the compressed air may be 10 ℃, 20 ℃, 30 ℃ or the like.
Through the arrangement, the low-temperature compressed air can cool the air around the driving part 1, and further improve the cooling and heat dissipation effects on the driving part 1.
In some embodiments, as shown in fig. 2, the bottom inside the sleeve 6 has a mount 61, and the driving member 1 is fixed on the mount 61.
Illustratively, the mounting 61 may be a raised structure within the sleeve 6, with the drive member 1 being secured to the mounting 61 by a connector.
With the above arrangement, the driving part 1 can be positioned by the mounting seat 61, and the driving part 1 and the sleeve 6 can be fixed conveniently.
In some examples, the side of the drive member 1 facing the mount 61 has a protrusion, and the side of the mount 61 facing the drive member 1 has a recess, the protrusion being located in the recess.
Illustratively, the boss mates with and is disposed in correspondence with the recess.
For example, the shape of the protruding portion may be rectangular, and correspondingly, the shape of the recess may be rectangular. The number of the protruding parts can be three, and correspondingly, the number of the grooves is also three.
With the above arrangement, positioning of the driving member 1 and the mount 61 can be achieved by the projections and the grooves.
In some embodiments, as shown in fig. 2, the mounting seat 61 is annular in shape, and the outer race of the drive member 1 is sized larger than the inner bore of the mounting seat 61.
Through the above arrangement, after the driving part 1 is mounted on the mounting seat 61, the inner hole of the mounting seat 61 can be shielded by the driving part 1, so that the tightness of the sleeve 6 at the mounting seat 61 is improved to a certain extent, and the leakage of substances in the equipment room 4 through the mounting seat 61 is avoided to a certain extent.
It will be appreciated that a gap is also left between the drive member 1 and the mounting seat 61 to facilitate the passage of compressed air within the cooling tube 10 into the interior of the equipment compartment 4 through the gap.
In some embodiments, the dimensions of the outer ring of the drive member 1 are matched to the dimensions of the inner ring of the sleeve 6.
The size of the outer ring of the driving member 1 and the size of the inner ring of the sleeve 6 are mutually matched, and the size of the outer ring of the driving member 1 is equal to or approximately equal to the size of the inner ring of the sleeve 6.
Through the arrangement, the gap between the driving part 1 and the inner ring of the sleeve 6 can be reduced, and the shaking of the driving part 1 relative to the sleeve 6 can be reduced in the working process of the driving part 1, so that the vibration transmitted to the pump impeller 3 by the driving part 1 is reduced, the working stability of the pump impeller 3 is improved, and the failure rate of the pump impeller 3 is reduced.
Example 2
As shown in fig. 2, the embodiment of the present invention further provides a spent fuel post-treatment system, which includes a heavy phase storage tank 30, a light phase storage tank 40, a mixer-settler 5 and a stirring device as in the above embodiment 1. The mixer-settler 5 is respectively communicated with the heavy phase storage tank 30 and the light phase storage tank 40 and is used for clarifying the two-phase materials after mixing.
It will be appreciated that because the distance between the driving member 1 and the impeller 3 in the stirring apparatus is relatively short, the length of the stirring shaft 2 can be reduced, and thus the radial swing generated at the end of the stirring shaft 2 can be reduced, which is advantageous in ensuring the stirring effect of the impeller 3. After the stirring device is used for the mixer-settler 5, the probability of unplanned parking of the mixer-settler 5 can be reduced, so that the discharge amount of radioactive waste liquid and the personnel illuminated dose in the process of overhauling the mixer-settler 5 can be reduced, and the cost required for overhauling the mixer-settler 5 after parking can be reduced.
Example 3
The embodiment of the invention also provides a method for stirring the mixture in the mixer-settler, which comprises the following steps: s100 to S400.
And S100, fixing the sleeve 6 on the shielding layer of the equipment room 4, and enabling the bottom end of the sleeve 6 to extend to the top end of the mixer-settler 5 after penetrating through the shielding layer of the equipment room 4.
S200, the driving member 1 is mounted at the bottom inside the sleeve 6.
And S300, installing the stirring shaft 2, wherein one end of the stirring shaft is connected with the driving component 1, and the other end of the stirring shaft penetrates out of the bottom of the sleeve 6 and enters the mixer-settler 5 to be connected with the pump wheel 3.
S400, starting the driving part 1, and driving the pump wheel 3 to operate through the stirring shaft 2.
Thereby, after the driving part 1 is mounted at the bottom in the sleeve 6, the distance between the driving part 1 and the pump wheel 3 can be reduced, so that the radial swing generated at the tail end of the stirring shaft 2 can be reduced, which is beneficial to ensuring the stirring effect of the pump wheel 3. And reduces the probability of unplanned stoppage of the mixer-settler 5, thereby reducing the discharge amount of radioactive waste liquid and personnel illuminated dosage in the process of overhauling the mixer-settler 5, and reducing the cost required for overhauling the mixer-settler 5 after stopping.
In some embodiments, after installation of the stirring shaft 2, before starting the driving member 1, the stirring method further comprises: S310-S320.
S310, installing the cooling pipe 10, and enabling the cooling pipe 10 to extend into the sleeve 6.
S320, conveying the cooling medium into the cooling pipe 10.
After the cooling medium is conveyed into the cooling pipe 10, the cooling medium can be used for radiating and cooling the driving part 1, so that the stability of the driving part 1 during operation is maintained, and the service life of the driving part 1 is prolonged.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.
Claims (10)
1. A stirring device, characterized by comprising:
the sleeve (6) is fixed on the shielding layer of the equipment room (4), and the bottom end of the sleeve (6) penetrates through the shielding layer of the equipment room (4) and then extends to the top end of the mixer-settler (5);
a driving part (1) arranged in the sleeve (6) and positioned at the bottom of the sleeve (6);
a stirring shaft (2) positioned in the equipment room (4), one end of which is connected with the driving component (1); and, a step of, in the first embodiment,
a pump wheel (3);
the other end of the stirring shaft (2) penetrates out of the bottom of the sleeve (6) and enters the mixer-settler (5) to be connected with the pump wheel (3);
the length range of the sleeve (6) is as follows: 1 to 5m; the distance between the centre of the driving part (1) and the bottom end of the sleeve (6) is less than or equal to one third of the length of the sleeve (6).
2. Stirring device according to claim 1, characterized in that the inner ring size of the sleeve (6) ranges from: 0.1 to 0.5m.
3. Stirring device according to claim 2, characterized in that the stirring shaft (2) has a length of less than or equal to 1m.
4. The stirring device of claim 1, further comprising:
a first sealing member (7) which is provided on the sleeve (6) in a sleeved manner and seals a gap between the sleeve (6) and the shielding layer of the equipment room (4);
a shielding cover plate (8) which is arranged at one end of the sleeve (6) positioned outside the equipment room (4) in a covering way and is used for sealing one end of the sleeve (6) positioned outside the equipment room (4); the outgoing line of the driving component (1) passes through the shielding cover plate (8) to be communicated with the outside; and, a step of, in the first embodiment,
and the second sealing component (9) is sleeved on the outgoing line of the driving component (1) and is used for sealing a gap between the outgoing line of the driving component (1) and the shielding cover plate (8).
5. The stirring device of claim 4, further comprising:
a cooling tube (10) which passes through the shielding cover plate (8) and extends into the sleeve (6) for conveying cooling medium into the sleeve (6); and, a step of, in the first embodiment,
and a third sealing component (20) sleeved on the cooling pipe (10) and used for sealing a gap between the cooling pipe (10) and the shielding cover plate (8).
6. The stirring device of claim 5, wherein the cooling medium comprises compressed air;
the pressure range of the compressed air is as follows: 0.1MPa to 0.3 MPa; and/or the number of the groups of groups,
the temperature range of the compressed air is as follows: 10 ℃ to 30 ℃.
7. Stirring device according to any one of claims 1 to 6, characterized in that the drive means (1) comprise a short-axis variable-frequency motor.
8. A spent fuel aftertreatment system, comprising:
a heavy phase storage tank (30);
a light phase storage tank (40);
the mixing and clarifying tank (5) is respectively communicated with the heavy phase storage tank (30) and the light phase storage tank (40) and is used for mixing and clarifying the two-phase materials respectively coming out of the heavy phase storage tank and the light phase storage tank; and, a step of, in the first embodiment,
a stirring device as set forth in any one of claims 1 to 7.
9. A method of stirring a mixture in a mixer-settler using a stirring device as set forth in any one of claims 1-8, comprising:
fixing a sleeve (6) on a shielding layer of the equipment room (4), and enabling the bottom end of the sleeve (6) to extend to the top end of the mixer-settler (5) after penetrating through the shielding layer of the equipment room (4);
-mounting a drive member (1) at the bottom inside the sleeve (6);
a stirring shaft (2) is arranged, one end of the stirring shaft is connected with the driving component (1), and the other end of the stirring shaft penetrates out of the bottom of the sleeve (6) and enters the mixer-settler (5) to be connected with the pump wheel (3);
and starting the driving part (1), and driving the pump wheel (3) to operate through the stirring shaft (2).
10. The stirring method according to claim 9, wherein,
after the installation of the stirring shaft (2), before the actuation of the drive member (1), the stirring method further comprises:
-mounting a cooling tube (10) such that the cooling tube (10) extends into the sleeve (6);
a cooling medium is fed into the cooling pipe (10).
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101310843A (en) * | 2008-02-03 | 2008-11-26 | 合肥华升泵阀有限责任公司 | Reaction kettle bottom agitation system |
| CN102939153A (en) * | 2010-05-18 | 2013-02-20 | 恩维罗利亚股份有限公司 | Thermal processing reactor for mixtures, fabrication of the reactor, processes using the reactors and uses of the products obtained |
| CN110042046A (en) * | 2019-05-07 | 2019-07-23 | 南京工业大学 | The built-in stirring mocromembrane of continuous immobilization is aerated internal circulation gas-lift type bioreactor |
| CN111992116A (en) * | 2020-08-18 | 2020-11-27 | 中国核电工程有限公司 | Magnetic stirring device and stirring mixing apparatus |
| CN116351274A (en) * | 2023-05-08 | 2023-06-30 | 中核四0四有限公司 | Stirring device and mixing system of mixing clarifying tank |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8268131B2 (en) * | 2009-03-24 | 2012-09-18 | Amt International, Inc. | Apparatus and method for recovery of acetic acid from an aqueous solution thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101310843A (en) * | 2008-02-03 | 2008-11-26 | 合肥华升泵阀有限责任公司 | Reaction kettle bottom agitation system |
| CN102939153A (en) * | 2010-05-18 | 2013-02-20 | 恩维罗利亚股份有限公司 | Thermal processing reactor for mixtures, fabrication of the reactor, processes using the reactors and uses of the products obtained |
| CN110042046A (en) * | 2019-05-07 | 2019-07-23 | 南京工业大学 | The built-in stirring mocromembrane of continuous immobilization is aerated internal circulation gas-lift type bioreactor |
| CN111992116A (en) * | 2020-08-18 | 2020-11-27 | 中国核电工程有限公司 | Magnetic stirring device and stirring mixing apparatus |
| CN116351274A (en) * | 2023-05-08 | 2023-06-30 | 中核四0四有限公司 | Stirring device and mixing system of mixing clarifying tank |
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