CN113370136B - Radioactive storage tank dismantling method and device - Google Patents
Radioactive storage tank dismantling method and device Download PDFInfo
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- CN113370136B CN113370136B CN202110704270.0A CN202110704270A CN113370136B CN 113370136 B CN113370136 B CN 113370136B CN 202110704270 A CN202110704270 A CN 202110704270A CN 113370136 B CN113370136 B CN 113370136B
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- storage tank
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention discloses a radioactive storage tank dismantling method, which comprises the following steps: a through hole is formed in the top of the storage tank, and the dismantling unit is hoisted and placed in the storage tank through the through hole; removing the metal part inside the storage tank by using a removing unit; and hanging the detached metal waste out of the through hole. The invention also discloses a radioactive storage tank dismantling device. The radioactive storage tank dismantling method can dismantle the storage tank, is simple to operate, and can meet the dismantling requirement of the storage tank in retirement.
Description
Technical Field
The invention particularly relates to a radioactive storage tank dismantling method and a radioactive storage tank dismantling device.
Background
In the field of nuclear industry, a storage tank needs to be dismantled when a radioactive storage tank is out of service. At present, a tank body of a radioactive storage tank is usually made of carbon steel, and the inner surface and the outer surface of the tank body are both covered with concrete, wherein the concrete on the outer surface of the tank body is poured on section steel welded on the outer surface of the tank body and used for fixing the tank body made of the carbon steel. However, due to the large tank size, the accessibility of the remote cutting tool carrier platform is limited, and the remote loading capability after full extension is limited, which is detrimental to tank disassembly.
Disclosure of Invention
The invention aims to solve the technical problem of providing a radioactive storage tank dismantling method and a device aiming at the defects in the prior art, wherein the radioactive storage tank dismantling method can dismantle a storage tank, is simple to operate and can meet the dismantling requirement of the storage tank during retirement.
In order to solve the technical problems, the invention adopts the following technical scheme:
a method of radioactive storage tank removal, comprising the steps of:
a through hole is formed in the top of the storage tank, and the dismantling unit is hoisted and placed in the storage tank through the through hole;
dismantling the metal part in the storage tank by adopting a dismantling unit;
and hanging the detached metal waste out of the through hole.
Preferably, the removing of the metal part inside the tank using a removing unit includes:
and the metal part of the storage tank body is firstly cut and removed by adopting the removing unit, and then the anchor bars are removed.
Preferably, the rib avoiding cutting and dismantling specifically comprises: the cutting robot in the dismantling unit avoids the anchor bars in the storage tank, and sequentially cuts and dismantles the top plate, the side wall and the bottom plate of the storage tank body;
dismantling the anchor bars specifically comprises: the auxiliary robot in the demolition unit uses a hydraulic hammer to impact the concrete around the anchor bars of the tank body to separate the anchor bars from the concrete, and separates the remaining metal part of the tank body connected with the anchor bars from the concrete, and then the auxiliary robot uses a hydraulic shear to shear the anchor bars and the remaining metal part of the tank body.
Preferably, in the process of cutting and dismantling the rib avoiding, the distance between the cutting point for cutting and the anchor rib is more than or equal to 50 mm.
Preferably, after the detached metal waste is lifted out of the through hole, the method further comprises: collecting cuttings and concrete dust in the storage tank body by adopting a dust collector; and loading the lifted metal waste into a steel box, carrying out dose rate detection on the steel box after the steel box is covered, and sending the metal waste to a corresponding waste treatment facility according to a detection result.
The invention also provides a radioactive storage tank dismantling device which comprises a dismantling unit, wherein the dismantling unit comprises a cutting robot, an auxiliary robot and a dismantling assembly,
the cutting robot is used for cutting the metal part of the storage tank body through the dismantling assembly;
the auxiliary robot is used for dismantling the anchor bars and the residual metal parts of the storage tank body through the dismantling assembly.
Preferably, the dismantling assembly comprises a circular saw, a hydraulic hammer and a hydraulic shear,
the cutting robot comprises a wall climbing assembly and a first operating assembly,
the first operation assembly is arranged on the wall climbing assembly and comprises a first mechanical arm, and the first mechanical arm is used for cutting the metal part of the storage tank body by operating the circular saw;
the wall climbing assembly is used for driving the first operation assembly to climb on a top plate, a side wall and a bottom plate of the storage tank body;
the auxiliary robot comprises a motion assembly and a second operation assembly,
the second operation assembly is arranged on the motion assembly and comprises a second mechanical arm, the second mechanical arm is used for impacting concrete around the anchor bars by operating the hydraulic hammer and shearing the anchor bars and the residual metal parts of the storage tank body by operating the hydraulic shears;
the moving assembly is used for driving the second operating assembly to move at the bottom of the storage tank body.
Preferably, the radioactive storage tank dismantling device further comprises a hoisting unit,
the hoisting unit comprises a hanging basket and a crane, wherein the hanging basket is used for loading metal waste;
the crane is arranged outside the storage tank and used for transporting the hanging basket from the interior of the storage tank to the exterior of the storage tank.
Preferably, the radioactive storage tank removing apparatus further comprises a cleaning unit,
the cleaning unit includes a dust collector for collecting cuttings and concrete dust in the tank body of the storage tank.
Preferably, the radioactive storage tank dismantling device further comprises a control unit, the control unit is arranged outside the storage tank, and the control unit is electrically connected with the cutting robot and the auxiliary robot respectively and used for controlling the cutting robot and the auxiliary robot to work respectively.
The radioactive storage tank dismantling method and the device thereof can avoid the problem of limitation of accessibility of a remote cutting tool carrier tape platform in the prior art by adopting the dismantling unit to dismantle the storage tank from the storage tank, and do not have the problem of limitation of remote end load capacity after the remote cutting tool carrier tape platform is completely extended.
Drawings
Fig. 1 is a schematic structural view of a radioactive storage tank dismantling device in an embodiment of the present invention.
In the figure: 1-a cutting robot; 2-an auxiliary robot; 3, hanging baskets; 4, a crane; and 5-steel box.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of the present invention.
In the description of the present invention, it should be noted that the indication of orientation or positional relationship, such as "on" or the like, is based on the orientation or positional relationship shown in the drawings, and is only for convenience and simplicity of description, and does not indicate or imply that the device or element referred to must be provided with a specific orientation, constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected," "disposed," "mounted," "fixed," and the like are to be construed broadly, e.g., as being fixedly or removably connected, or integrally connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.
The invention provides a radioactive storage tank dismantling method, which comprises the following steps:
a through hole is formed in the top of the storage tank, and the dismantling unit is hoisted and placed in the storage tank through the through hole;
removing the metal part inside the storage tank by using a removing unit;
and hanging the detached metal waste out of the through hole.
The invention also provides a radioactive storage tank dismantling device which comprises a dismantling unit, wherein the dismantling unit comprises a cutting robot, an auxiliary robot and a dismantling assembly,
the cutting robot is used for cutting the metal part of the storage tank body through the dismantling assembly;
the auxiliary robot is used for dismantling the anchor bars and the residual metal parts of the storage tank body through the dismantling assembly.
Example 1:
the embodiment discloses a radioactive storage tank dismantling method, which comprises the following steps:
as shown in fig. 1, a through hole is formed at the top of the storage tank, and the demolition unit is hoisted and placed in the storage tank through the through hole.
Specifically, from the storage tank outside, set up the through-hole at the top of storage tank, usually, the through-hole adopts squarely, and the length of side is 500 ~ 1500mm, is convenient for demolish the unit and can enter into in the storage tank through this through-hole.
The metal parts inside the tank are then removed using a removal unit.
Specifically, the metal part of the storage tank body is firstly cut and removed by the rib avoiding unit, and then the anchor rib is removed.
Wherein, keep away the muscle cutting and demolish, specifically include: and the cutting robot 1 in the dismantling unit avoids the anchor bars in the storage tank, and sequentially cuts and dismantles the top plate, the side wall and the bottom plate of the storage tank body.
The position of the anchor bar of the storage tank can be determined through the fixed marker in the storage tank body, in the embodiment, the fixed marker comprises a liquid pouring pipe, an outer manhole, an inner manhole, a sampling hole, an instrument hole, a washing hole and an inspection hole, and the position of the anchor bar can be accurately determined through the fixed marker.
In the embodiment, in the rib avoiding cutting and removing process, the distance between the cutting point for cutting and the anchor bar is more than or equal to 50mm, so that the problem that the removing unit for cutting fails due to damage of the anchor bar to the removing unit for cutting is solved.
Dismantling the anchor bars, and specifically comprising: the auxiliary robot 2 in the demolition unit strikes the concrete around the anchor bars of the tank body using a hydraulic hammer to separate the anchor bars from the concrete, to expose the anchor bars from the concrete, and to separate the remaining metal parts of the tank body connected to the anchor bars from the concrete, and then the auxiliary robot 2 shears the anchor bars and the remaining metal parts of the tank body using hydraulic shears.
Finally, the removed metal waste is lifted out of the through hole.
Specifically, the auxiliary robot 2 can load the metal waste into the basket 3 and then lift the metal waste in the basket 3 out of the receptacle from the through hole using the hoist 4.
In this embodiment, the metal waste that is hung out is loaded into steel case 5, carries out dose rate detection to it after steel case 5 closing cap, sends it to corresponding waste treatment facility according to the testing result again.
In this embodiment, after the metal waste that will demolish is hung out from the through-hole, can also adopt the dust catcher to collect storage tank jar internal smear metal and concrete dust, wherein, storage tank jar internal smear metal and concrete dust's collection can adopt auxiliary robot to operate, also can adopt staff direct operation.
In the embodiment, after the storage tank is dismantled, hot spot investigation can be performed on the concrete layer in the storage tank by workers, and if hot spots exist, the hot spots are removed by using the auxiliary robot so as to meet the requirement of subsequent storage tank backfilling.
The radioactive storage tank dismantling method of this embodiment is through demolising the unit and demolising the storage tank from the storage tank in, can avoid the problem of the limitation of the reachability of remote cutting tool carrier band platform among the prior art, and there is not the problem of the distal end bearing capacity restriction after remote cutting tool carrier band platform extends completely, in addition, the radioactive storage tank dismantling method and device of this embodiment are simple, high durability and convenient operation, can directly demolish the storage tank through demolising the unit, the storage tank not only can be quick demolishd, save the time of demolising and the manpower and materials among the operation process, can also carry out thorough demolishment to the radioactive storage tank, satisfy the demand of demolishment when the storage tank is retired.
Example 2:
the embodiment discloses a radioactive storage tank dismantling device, which comprises a dismantling unit as shown in fig. 1, wherein the dismantling unit comprises a cutting robot 1, an auxiliary robot 2 and a dismantling assembly.
Wherein the cutting robot 1 is used to cut the metal part of the tank body of the tank by means of a dismantling assembly.
The auxiliary robot 2 is used to remove the anchor bars and the remaining metal parts of the tank body by means of a removal assembly.
Specifically, the demolition assembly includes a circular saw, a hydraulic hammer, and a hydraulic shear.
The cutting robot 1 comprises a wall climbing assembly and a first operating assembly, wherein the first operating assembly is arranged on the wall climbing assembly and comprises a first mechanical arm, and the first mechanical arm is used for cutting a metal part of the storage tank body by operating a circular saw.
The wall climbing assembly is used for driving the first operation assembly to climb on the top plate, the side wall and the bottom plate of the storage tank body. Typically, wall climbing assemblies employ magnetic attraction.
The auxiliary robot 2 comprises a movement assembly and a second operation assembly, wherein the second operation assembly is arranged on the movement assembly and comprises a second mechanical arm, the second mechanical arm is used for impacting concrete around the anchor bars by operating a hydraulic hammer, and shearing the anchor bars and the residual metal parts of the storage tank body by operating a hydraulic shear.
The moving assembly is used for driving the second operating assembly to move at the bottom of the storage tank body.
Furthermore, the auxiliary robot 2 can also be used to carry the demolition assembly, facilitating the use of the demolition assembly by the cutting robot 1 and the auxiliary robot 2.
In this embodiment, the radioactive storage tank dismantling device further comprises a hoisting unit, wherein the hoisting unit comprises a basket 3 and a crane 4, the basket 3 is used for loading metal waste, and in this embodiment, the basket 3 is placed below the through hole at the top of the storage tank.
A crane 4 is then provided outside the tank for transporting the baskets 3 from inside the tank to outside the tank.
In this embodiment, the crane 4 adopts a gantry crane, and the gantry crane has a small load, so that the influence on the safety of the old wall of the plant caused by the heavy load brought by the factory building crane 4 can be reduced.
In the embodiment, the hanging basket 3 is hung out of the storage tank through a crane 4 and is placed into a steel box 5 with an open cover, after the steel box 5 is filled or the storage tank fragments are filled, the steel box 5 is sealed and subjected to radioactive dose rate detection, then the steel box 5 is placed into a shielding transport vehicle, and the steel box 5 is sent to a corresponding waste treatment facility for further treatment according to the result of the monitored radioactive dose rate.
Preferably, after the tank body of the storage tank is removed, the concrete layer in the storage tank is subjected to decontamination removal operation, wherein the decontamination removal operation comprises hot spot searching, hot spot removal by using a breaking pick or a hydraulic hammer, and the reduction of the radioactivity of the concrete. And respectively sending the concrete waste generated by the dismantled concrete to a corresponding waste treatment facility for further treatment according to the radioactive level.
In this embodiment, the radioactive storage tank dismantling device further comprises a cleaning unit, and specifically, the cleaning unit comprises a dust collector for collecting cuttings and concrete dust in the storage tank body.
The collection of the cuttings and concrete dust in the storage tank body can be carried out by adopting the auxiliary robot 2 to carry a dust collector, and if the radioactivity level allows, workers can directly operate the dust collector to collect the cuttings and the concrete dust.
In the embodiment, the tank body of the storage tank is dismantled by the operation of the cutting robot 1 and the auxiliary robot 2.
Wherein, cutting robot 1 carries on the circular saw, through its wall subassembly of climbing, can follow the bottom plate of basin and remove to the lateral wall, removes to the roof by the lateral wall again, cuts roof, lateral wall, the bottom plate to the basin in proper order and demolishs.
The auxiliary robot 2 moves at the bottom of the storage tank, and the anchor bars and the residual metal parts of the storage tank body are detached through the hydraulic hammer and the hydraulic shear. In addition, the auxiliary robot 2 is also used to carry a demolition assembly such as a circular saw, a hydraulic hammer, and a hydraulic shear, and also can carry a carrying clamp, wherein the carrying clamp is used for carrying, loading, unloading, and large-size waste. The auxiliary robot can also finish the carrying work of the metal waste after the storage tank body is dismantled.
Specifically, the metal part of the storage tank body is firstly cut and removed by the rib avoiding unit, and then the anchor rib is removed.
Wherein, keep away the muscle cutting and demolish, specifically include: and the cutting robot 1 in the dismantling unit avoids the anchor bars in the storage tank, and sequentially cuts and dismantles the top plate, the side wall and the bottom plate of the storage tank body. And the position of the anchor bar is determined by taking a fixed marker in the storage tank as a reference, and cutting path planning is carried out according to the welding position of the storage tank body and the anchor bar embedded in the concrete layer so as to avoid the area where the anchor bar is located. The cut metal waste is loaded into a basket 3 by an auxiliary robot 2 and hoisted to the outside of the tank body by a crane 4.
Preferably, the lighting device is arranged in other passages such as an inner manhole, a washing hole, an inspection hole and the like of the storage tank, so that the condition in the storage tank can be monitored when the storage tank is detached, and the position of the fixed marker can be determined more quickly.
Preferably, the auxiliary robot 2 can carry the circular saw to perform the supplementary cutting at a specific position, which is usually a position where the cut piece is not separated from the tank body or is difficult to separate, and the auxiliary robot 2 can carry the circular saw to perform the supplementary cutting, thereby ensuring that the cut piece avoiding the rib cutting can be smoothly separated from the tank body.
In addition, the anchor bars are removed after the rib avoiding cutting is finished, the auxiliary robot 2 in the removing unit impacts concrete around the anchor bars of the storage tank body by adopting a hydraulic hammer to separate the anchor bars from the concrete and expose the anchor bars from the concrete, the residual metal part of the storage tank body connected with the anchor bars is separated from the concrete, and then the auxiliary robot 2 shears the anchor bars and the residual metal part of the storage tank body by adopting hydraulic pressure. The sheared anchor bars and the rest part of the storage tank body are collected and then are loaded into a hanging basket 3, and are hoisted to the outside of the storage tank body through a crane 4.
Wherein, in the anchor bar dismantling process, the impact operation of the auxiliary robot 2 to the concrete and the shearing operation to the anchor bar can be carried out alternately as required, so as to be convenient for dismantling the storage tank body.
In this embodiment, the basket 3 is placed below the through hole at the top of the storage tank, which facilitates the operation of placing and removing the basket 3 into and out of the storage tank by the crane 4.
In this embodiment, if a sleeve is embedded in the concrete, the anchor bars are removed at the anchor bar removing stage.
The radioactive storage tank dismantling device in the embodiment is simple in structure, convenient to operate and capable of effectively achieving dismantling of the storage tank.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which 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 (10)
1. A method for removing a radioactive storage tank, comprising the steps of:
a through hole is formed in the top of the storage tank, and the dismantling unit is hoisted and placed in the storage tank through the through hole;
removing the metal part inside the storage tank by using a removing unit;
and hanging the detached metal waste out of the through hole.
2. A radioactive storage tank removal method according to claim 1, wherein removing metal portions of the interior of said storage tank with a removal unit comprises:
and the metal part of the storage tank body is firstly cut and removed by adopting the removing unit, and then the anchor bars are removed.
3. A method of removing a radioactive storage tank according to claim 2, wherein the rib-avoiding cutting removal specifically comprises: the cutting robot in the dismantling unit avoids the anchor bars in the storage tank, and sequentially cuts and dismantles the top plate, the side wall and the bottom plate of the storage tank body;
dismantling the anchor bars specifically comprises: the auxiliary robot in the demolition unit uses a hydraulic hammer to impact the concrete around the anchor bars of the tank body to separate the anchor bars from the concrete, and separates the remaining metal part of the tank body connected with the anchor bars from the concrete, and then the auxiliary robot uses a hydraulic shear to shear the anchor bars and the remaining metal part of the tank body.
4. A method for removing a radioactive storage tank according to claim 3, wherein the distance between the cutting point for cutting and the anchor bar is not less than 50mm during the rib-avoiding cutting and removing process.
5. A radioactive storage tank removal method according to claim 1, further comprising, after hanging the removed metal waste out of said through hole: collecting cuttings and concrete dust in the storage tank body by adopting a dust collector; and loading the lifted metal waste into a steel box, carrying out dose rate detection on the steel box after the steel box is covered, and sending the metal waste to a corresponding waste treatment facility according to a detection result.
6. A radioactive storage tank dismantling device is characterized by comprising a dismantling unit, wherein the dismantling unit comprises a cutting robot, an auxiliary robot and a dismantling assembly,
the cutting robot is used for cutting the metal part of the storage tank body through the dismantling assembly;
the auxiliary robot is used for dismantling the anchor bars and the residual metal parts of the storage tank body through the dismantling assembly.
7. A radioactive storage tank removal device according to claim 6, wherein the removal assembly comprises a circular saw, a hydraulic hammer and a hydraulic shear,
the cutting robot comprises a wall climbing assembly and a first operating assembly,
the first operation assembly is arranged on the wall climbing assembly and comprises a first mechanical arm, and the first mechanical arm is used for cutting the metal part of the storage tank body by operating the circular saw;
the wall climbing assembly is used for driving the first operation assembly to climb on a top plate, a side wall and a bottom plate of the storage tank body;
the auxiliary robot comprises a motion assembly and a second operation assembly,
the second operation assembly is arranged on the motion assembly and comprises a second mechanical arm, the second mechanical arm is used for impacting concrete around the anchor bars by operating the hydraulic hammer and shearing the anchor bars and the residual metal parts of the storage tank body by operating the hydraulic shears;
the moving assembly is used for driving the second operating assembly to move at the bottom of the storage tank body.
8. A radioactive reservoir removal apparatus according to claim 7, further comprising a lifting unit,
the hoisting unit comprises a hanging basket and a crane, wherein the hanging basket is used for loading metal waste;
the crane is arranged outside the storage tank and used for transporting the hanging basket from the interior of the storage tank to the exterior of the storage tank.
9. A radioactive reservoir removal apparatus according to claim 7, further comprising a cleaning unit,
the cleaning unit includes a dust collector for collecting cuttings and concrete dust in the tank body of the storage tank.
10. A radioactive storage tank removal apparatus according to any one of claims 7 to 9, further comprising a control unit, said control unit being disposed outside said storage tank and being electrically connected to said cutting robot and said auxiliary robot, respectively, for controlling the operation of said cutting robot and said auxiliary robot, respectively.
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| CN202110704270.0A CN113370136B (en) | 2021-06-24 | 2021-06-24 | Radioactive storage tank dismantling method and device |
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| CN202110704270.0A CN113370136B (en) | 2021-06-24 | 2021-06-24 | Radioactive storage tank dismantling method and device |
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| CN113370136B true CN113370136B (en) | 2022-05-17 |
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| CN111843417A (en) * | 2020-07-24 | 2020-10-30 | 中国核动力研究设计院 | Remote dismantling process for indoor equipment with strong heat release |
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2021
- 2021-06-24 CN CN202110704270.0A patent/CN113370136B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5518553A (en) * | 1993-04-27 | 1996-05-21 | Moulder; Jeffrey E. | Storage tank cleaning and stripping apparatus and method |
| CN104831947A (en) * | 2015-03-15 | 2015-08-12 | 青岛东卡环保工程技术有限公司 | Pool parts removing technology for swimming pool reactor decommissioning |
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