CN110299212B - Target cutting and solving device for irradiating uranium foil target - Google Patents
Target cutting and solving device for irradiating uranium foil target Download PDFInfo
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- CN110299212B CN110299212B CN201910508461.2A CN201910508461A CN110299212B CN 110299212 B CN110299212 B CN 110299212B CN 201910508461 A CN201910508461 A CN 201910508461A CN 110299212 B CN110299212 B CN 110299212B
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
- G21C3/02—Fuel elements
- G21C3/04—Constructional details
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21G—CONVERSION OF CHEMICAL ELEMENTS; RADIOACTIVE SOURCES
- G21G1/00—Arrangements for converting chemical elements by electromagnetic radiation, corpuscular radiation or particle bombardment, e.g. producing radioactive isotopes
- G21G1/02—Arrangements for converting chemical elements by electromagnetic radiation, corpuscular radiation or particle bombardment, e.g. producing radioactive isotopes in nuclear reactors
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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 target cutting and target solving device for irradiating uranium foil target pieces, which comprises a rotating table frame, a rotating table, target piece clamps, a longitudinal guide rail, a positioning frame, a cutting tool fixing frame and a cutting tool, wherein the rotating table frame is arranged on the rotating table frame; the target piece clamp is arranged on the rotating platform and can rotate along with the rotating platform to drive the target piece to rotate; the cutting tool fixing frame is arranged on the positioning frame; the cutting tool is arranged on the cutting tool fixing frame and can generate extrusion force on the target; the positioning frame can move along the longitudinal guide rail to enable the cutting tool on the cutting tool fixing frame to move relative to the target; the rotating table is arranged on the rotating rack, and the rotating rack and the longitudinal guide rail are relatively fixed in position; the cutting tool is a gearless tool. The invention has the following beneficial effects: the cutter is a toothless cutter, and the extrusion force of the cutter on the target is matched with the target to rotate, extrude and shear the target cladding or other cylindrical objects, so that dust and debris are avoided, and the risk of radioactive pollution is reduced.
Description
Technical Field
The invention relates to the field of nuclear chemical industry, in particular to a target cutting and target solving device for irradiating a uranium foil target.
Background
99Mo is an artificial radionuclide with a half-life of 66h, obtained by decay99mTc。99mTc drugs are the most widely used radiodiagnostic drugs in modern nuclear medicine.
Although there are many ways and techniques to produce, the primary way to obtain high specific activity products is reactor irradiation of uranium-235 by fission reaction99Mo and other products of the reaction, and the like,99mo accounts for 6.1 mass% of the fission product. Uranium target (235U) can generate fission reaction under the action of thermal neutrons after the reactor is placed, and the reaction section is 586 b. The fission reaction equation is:
235U+n→236U+99Mo+134Sn+3n
fission production using low-enriched uranium targets and high-enriched uranium targets99The main difference between Mo and Mo is to maintain99Mo yield and purity, economic benefit is guaranteed, and the increase of U amount brings difficulties to the target making and target solving work. The uranium foil target is a target formed from LEU (235U enrichment of 19.75%) is wrapped between the inner and outer annular aluminum cylinders. During the preparation of the uranium foil target, the uranium foil is expanded and connected with the inner target cylinder and the outer target cylinder, so that the inner target cylinder is deformed to be connected with the uranium foil and the outer target cylinder in a sealing and fastening mode, and good heat conductivity is kept. After irradiation, the target piece with tight expansion joint needs special target-releasing equipment to quickly remove the outer cylinder and the inner cylinder, take out the uranium foil, enter the dissolving process and obtain fission for subsequent separation and purification99And laying a foundation for Mo.
The radionuclide is prepared by loading irradiation raw materials such as U, Te into a cladding to obtain a target, placing into a nuclear reactor or an accelerator for irradiation for a certain time, taking out the target from the nuclear reactor or the accelerator, placing into a shielding lead tank, transferring into a radioactive hot chamber, performing target decomposition, taking out the irradiated raw materials, and extracting the required radionuclide. In terms of economy of thermal neutrons in a reactor, the target cladding generally uses aluminum or zirconium as the cladding material of the target, and in order to ensure the heat release requirement during irradiation in the reactor and the requirement of radioactive operation, the target cladding is made into a cylindrical form, irradiation raw materials are filled into the cylindrical cladding, and the cylindrical cladding is welded and sealed to make the target.
The irradiated target has strong radioactive radiation dose, and must be put into a shielding lead tank and transferred into a radioactive heat chamber, and the target is cut, taken out, irradiated and subjected to chemical process treatment. The target detacking of the irradiated target must be performed in a hot chamber. The radioactive hot chamber is a chamber for carrying out high-radioactivity tests and operations, is shielded by lead, cast iron or heavy concrete and is hermetically isolated from the surrounding environment, and the operations in the chamber are completed by a manipulator. Since radioactive aerosols are generated by operation of certain radionuclides and radioactive contamination of the hot room environment occurs once they leak out of the hot room, the hot room exhaust air must be purified by hot room exhaust filters, and radioactive tests and operations in the cabinet are required to reduce the generation of radioactive aerosols in the hot room without generating dust and debris. Therefore, a special cutting device suitable for the operation of a thermal indoor manipulator and the remote control outside the thermal indoor is required to be installed in the thermal chamber.
The cutting device consists of a hot-chamber internal target device, a hot-chamber external PLC program automatic controller, a compressed air pump and the like. The cutting target solving device in the hot chamber is provided with driving force by a compression air pump outside the hot chamber, and an operator sets and controls each power unit to provide driving force by setting a PLC program automatic controller outside the hot chamber. The cutting device may be used for cutting of a target or other radioactive article, such as a cladding for a radioactive target, radioactive metal or non-metal cutting. According to the economy and thermal safety of thermal neutrons, target cladding materials mainly adopt aluminum A1, magnesium Mg and zirconium Zr, and the tensile strength of A1 is 205MPa, the tensile yield strength is 55.2MPa and the Brinell hardness is HB126 at normal temperature; the tensile strength of the metal Mg is 250MPa, the tensile yield strength is 150MPa, the Brinell hardness is HB80, the tensile strength of the zirconium Zr is 533MPa, the tensile yield strength is 361MPa, and the Brinell hardness is HB 210. The target cutter may also be used to cut other radioactive containment, such as 304 stainless steel (tensile strength 620MPa, tensile yield strength 310MPa, Brinell hardness HB 187); 316 stainless steel (tensile strength 520MPa, tensile yield strength 205MPa, Brinell hardness HB200), therefore, for the harder metallic sheath of will cutting, the cutting blade chooses the material to be the circular blade of no gear of tungsten W carbide cemented carbide of titanium carbide base reduces the production of aerosol in the hot chamber, requires not to produce dust and piece during the cutting, avoids producing radioactive clastic substance in the hot chamber and causes radioactive pollution, guarantees hot indoor environmental safety as far as possible.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a target cutting and target dissolving device for irradiating a uranium foil target, which solves the problems that dust and debris are easily generated in the target dissolving process by using a saw cutting or gear cutting, so that radioactive aerosol and radioactive waste in a hot chamber are caused.
The technical scheme of the invention is as follows:
a target cutting and target solving device for irradiating uranium foil target pieces comprises a rotary table frame, a rotary table, target piece clamps, a longitudinal guide rail, a positioning frame, a cutting tool fixing frame and a cutting tool; the target piece clamp is arranged on the rotating platform and can rotate along with the rotating platform so as to drive the target piece to rotate; the cutting tool fixing frame is arranged on the positioning frame; the cutting tool is arranged on the cutting tool fixing frame and can generate extrusion force on the target; the positioning frame can move along the longitudinal guide rail to enable the cutting tool on the cutting tool fixing frame to move relative to the target; the rotating table is arranged on the rotating rack, and the rotating rack and the longitudinal guide rail are relatively fixed in position; the cutting tool is a gearless tool.
Further, in the target cutting and target releasing device for irradiating the uranium foil target, the cutting tool is made of tungsten carbide-based cemented tungsten carbide.
Further, foretell a cutting target drone for irradiating uranium foil target spare, the cutting tool is two, the symmetry set up in cutting tool mount both sides.
Further, in the target cutting and target releasing device for irradiating the uranium foil target, the positioning frame is mounted on the longitudinal guide rail through a bearing.
Further, the top of the longitudinal guide rail is provided with a limiting plate.
Further, in the target cutting and target releasing device for irradiating the uranium foil target, the rotating table, the target clamp, the positioning frame and the cutting tool fixing frame are respectively connected with a power cylinder to respectively provide operation power.
Further, in the target cutting and target removing device for irradiating the uranium foil target, a compressed air source is connected with the power cylinder through a controller.
Further, the controller is a PLC modular controller.
Further, according to the target cutting and target releasing device for irradiating the uranium foil target, the PLC outputs different power air pressures according to different target cladding materials so as to control the rotating speed of the rotating table and the clamping force of the cutting tool.
The invention has the following beneficial effects:
the cutter is a toothless cutter, and the extrusion force of the cutter on the target is matched with the target to rotate, extrude and shear the target cladding or other cylindrical objects, so that dust and debris are avoided, and the risk of radioactive pollution is reduced.
Drawings
Fig. 1 is a schematic structural view of a target cutting and drone for irradiating a uranium foil target according to the present invention.
Fig. 2 is another perspective view of the target-cutting drone for irradiating a uranium foil target according to the present disclosure.
Fig. 3 is a schematic drive diagram of a target-cutting and target-dissolving device for irradiating a uranium foil target according to the present invention.
In the above drawings, 1, a fixed bottom plate; 2. a rotating stand; 3. a rotating table; 4. a target clamp; 5. a rotating table power cylinder; 6. cutting a cutter; 7. a cutting tool holder; 8. a positioning frame; 9. a longitudinal guide rail; 10. a target; 11. a positioning frame power cylinder; 12. a target clamp power cylinder; 13. a cutting tool power cylinder; 14. a bearing; 15. and a limiting plate.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
As shown in fig. 1 and 2, the invention provides a target cutting and target removing device for irradiating uranium foil targets, which comprises a rotary table frame 2, a rotary table 3, a target clamp 4, a longitudinal guide rail 9, a positioning frame 8, a cutting tool fixing frame 7 and a cutting tool 6; the target clamp 4 is mounted on the rotary table 3 and can rotate along with the rotary table 3 to drive the target 10 to rotate; the cutting tool fixing frame 7 is arranged on the positioning frame 8; the cutting tool 6 is mounted on the cutting tool fixing frame 7 and can generate extrusion force on the target 10; the positioning frame 8 can move along the longitudinal guide rail 9 to move the cutting tools 6 on the cutting tool fixing frame 7 relative to the target 10; the rotating table 3 is mounted on the rotating table frame 2, and the rotating table frame 2 and the longitudinal guide rail 9 are relatively fixed in position; the cutting tool 6 is a gearless tool. Through the extrusion force of cutter effect on target 10, cooperate target 10 rotatory extrusion shearing target cladding or other cylindrical article to cold extrusion's mode provides cutting power, and the cutter adopts the toothless cutter simultaneously, avoids dust and piece, reduces the radioactive contamination risk. The cutting tools 6 are symmetrically arranged on two sides of the cutting tool fixing frame 7. In this manner, the shear forces acting on the target 10 can be balanced, resulting in efficient cutting.
The rotating platform 3, the target piece clamp 4, the positioning frame 8 and the cutting tool fixing frame 7 are respectively connected with a power cylinder to respectively provide operation power. In this embodiment, the power cylinders include a turntable power cylinder 5, a spacer power cylinder 11, a target holder power cylinder 12, and a cutting tool power cylinder 13. A compressed air source is connected to the power cylinder through a controller. The controller is a PLC modular controller. The PLC modular controller outputs different power air pressure according to different target piece cladding materials so as to control the rotating speed of the rotating platform 3 and the clamping force of the cutting tool 6.
Specifically, the rotating table frame 2 and the vertical guide rail 9 are fixedly mounted on the fixed base plate 1, the rotating table is fixedly mounted on the upper surface of the rotating table frame 2, and the rotating table power cylinder 5 and the target holder power cylinder 12 are mounted on the lower surface. The side surface of the rotating platform 3 is provided with a rotating platform power cylinder 5 for providing power for the rotation of the rotating platform 3. The target clamp is fixedly arranged on the rotating platform 3 and is used for fixedly clamping the target 10 and rotationally cutting the target 10 along with the rotating platform. The bottom of the rotating stand 2 is provided with a target clamp power cylinder 12 for providing power to the target clamp 4 to clamp the target 10 and other cut objects. The target piece clamp 4 is assembled on the rotary table 3, rotates the longitudinal guide rail 9 together with the rotary table 3 into two symmetrical round stainless steel columns with the diameter of 3cm, is arranged on one side close to the edge of the cutter, longitudinally passes through the rotary table frame 2 to be fixed on the fixed bottom plate 1 for installing the positioning frame 8, and the two ends of the positioning frame 8 are sleeved on the longitudinal guide rail 9 by using sliding bearings 14 and can freely move up and down to adjust the upper position and the lower position. The upper end of the longitudinal guide rail 9 is provided with a limiting plate 15 which plays a role in limiting the position. The power of the positioning frame 8 moving up and down freely is provided by a power cylinder 11 of the cutting tool positioning frame arranged on the positioning frame 8, and the up-and-down position of the positioning frame 8 is adjusted and determined. The cutting tool 6 and the cutting tool power cylinder 13 are arranged on the cutting tool fixing frame 7, are arranged on the positioning frame 8 along with the cutting tool fixing frame 7, and are adjusted by the up-and-down movement of the positioning frame 8 to determine the cutting position of the cutting tool 6. The cutter 6 is powered by a cutter power cylinder 13 so that the cutting blade grips the target 10 and the object to be cut.
In order to obtain better cutting effect, the cutting tool 6 adopts tungsten carbide-based hard alloy, namely hard alloy taking TiC as a main component, and has very high hardness, and the Brinell hardness HB810 is second to diamond; the hot hardness is good, and the hardness is still maintained at HB600 at 1000 ℃; high bending strength of 5100MPa, good impact toughness and extremely high chemical inertness of corrosion resistance. The two cutting tools 6 are arranged in bilateral symmetry, and the two cutting tools are symmetrically cut in a relatively cold extrusion mode during cutting. The cut object is placed on the rotary table 3 by the manipulator and clamped by the target clamp 4 arranged on the rotary table 3, and the cut object rotates along with the rotary table 3 to finish cutting.
In order to solve the problems of high radioactive radiation dose in operation in a shielding hot chamber and interference of radiation ionization field intensity on the driving of electric equipment, the driving power for rotation, clamping and movement is provided by adopting pneumatic power. The controlled multi-cylinder is controlled by a hot-chamber external compression air pump through a PLC program automatic control instrument to provide each power unit with driving force, and the control is accurate, so that the operations such as clamping, rotating and the like are completed. The rotary table 3 is powered by a rotary table power cylinder 5 to rotate, the target piece clamp 4 and the cutting tool 6 are respectively powered by respective power cylinders to clamp the target piece 10, and the cutting tool 6 is powered by a positioning frame power cylinder 11 to move up and down to determine the longitudinal position of the cutting tool 6.
After the target 10 is transferred into the hot chamber, the target is vertically placed into the rotating platform 3 of the target cutting device by using a hot chamber manipulator, compressed air is introduced into the target clamp power cylinder 12, and the target clamp 4 is powered by a hot chamber compressed air pump to clamp the target 10; compressed air is introduced into the positioning frame power cylinder 11 to provide power to move the positioning frame 8 and adjust the cutting tool 6 to a cutting position; compressed air is introduced into the cutting tool power cylinder 13 to provide power to enable the cutting tool 6 to clamp the target 10; after the clamping of each part and the position adjustment of the cutting tool 6 are finished, the compressed air introduced into the rotary table cylinder is adjusted according to the requirement of the cutting rotation speed, power is provided to enable the rotary table 3 and the target 10 clamped by the target clamp 4 on the rotary table 3 to rotate together, and the target 10 is gradually cut by the cutting tool 6 along with the continuous rotation of the rotary table 3.
In this embodiment, the driving air pressures required for clamping, moving and cutting the respective branch cylinders are different, and the clamping forces required for clamping hollow objects to be cut of different materials and different thicknesses, such as aluminum Al or zirconium Zr, are different, so that if the clamping forces are too large, the objects to be cut deform and cannot be cut. The cutting is that the cutting blade clamps the cutting object, and to cutting object application shear stress extrusion cutting target 10, the metal that is cut takes place local deformation under the shear stress effect and produces solid plastic flow, if the metal is out of shape in the twinkling of an eye, the deformation degree is high, the time is short can produce a large amount of heats, leads to being cut target 10 temperature rise very high, makes the target 10 that is cut warp, causes unfavorable influence to irradiation thing in the target 10, also can produce the aerosol simultaneously. Too fast a rotational cutting speed, the friction of the cutting blade against the metal being cut also causes a high temperature rise of the target 10 being cut, which adversely affects the cutting operation. Therefore, the cutting rotation speed is set in accordance with the object to be cut, and it is preferable that the surface temperature of the object to be cut is maintained at room temperature during cutting, so that the cutting target 10 is cold-pressed by applying shear stress to the object to be cut. When the target 10 is cut through, the cutting needs to be stopped in time to avoid damaging the irradiation in the target 10.
The target cutting and target dissolving device for irradiating the uranium foil target piece of the embodiment operates as follows:
starting a compressed air pump 17 as a compressed air source outside the shielded hot room, and supplying compressed air to the PLC modular controller 16 (fig. 3 shows a connection manner between the compressed air pump and the modular controller in this embodiment); a shielding hot chamber mechanical arm is used for grabbing a target 10 or an object to be cut and placing the object to the center of the rotating platform 3, the power air pressure required by the power air cylinder 12 of the target clamp is set to be sent to the PLC modular controller 16, one path of power air pressure is output to the power air cylinder 12 of the target clamp, and the target clamp 4 is driven to clamp the target. And the PLC (programmable logic controller) modular controller 16 sets and outputs another path of power air pressure to provide power for the positioning frame power cylinder 11, moves the positioning frame 8 up and down, and adjusts and determines the cutting position of the cutting tool 6. The PLC 16 is set according to the cut material, and outputs a path of power air pressure to the power cylinder 13 of the cutting tool, so as to provide power to enable the cutting tool 6 to clamp the target or the cut object. And finally, setting a PLC (programmable logic controller) modular controller 16, outputting one path of power air pressure to a power cylinder 5 of the rotating platform, and providing power to rotate the rotating platform 3 to cut the target.
The target to be cut is cylindrical in shape, the material and wall thickness vary, the clamping force applied varies, for example, the aluminum or target cladding is thin, and excessive clamping force may cause the cladding to deform, making cutting difficult. The PLC modular controller 16 is set according to different target cladding materials and wall thicknesses, so that the output power air pressure of one path of the target clamp power cylinder 12 meets the clamping force and the target cladding cannot be deformed. Such as aluminum cladding or thinner target cladding, the PLC modular controller 16 is set to output no more than 3 atm, and if zirconium or stainless steel, the PLC modular controller 16 is set to output 7 atm based on wall thickness adjustment to clamp the target. When cutting solid cutting objects, the air pressure of 7a tm-10a tm needs to be output to the power cylinder 12 of the target clamp to clamp the objects.
The target object cladding of different materials is cut, the clamping force to be applied to the cutting tool 6 is different, and the PLC (programmable logic controller) 16 is set to output the power air pressure of one path of the power cylinder 13 of the cutting tool according to the target object cladding material to be cut, so that the cutting tool 6 clamps the target object or the object to be cut for cutting. If cutting an aluminum clad, the PLC modular controller 16 is set to output 3 atm, and if cutting zirconium or stainless steel, the PLC modular controller 16 is adjusted to output no more than 5 atm. In the cutting process, because the high temperature is avoided due to the friction between the cutting tool 6 and the cut object, the power air pressure output to the cutting tool power cylinder 13 cannot be too large, and the cutting is carried out by adopting a cold extrusion mode for controlling proper cutting time.
After the cutting tool 6 is driven by the cutting tool power cylinder 13 to clamp the target or the cut object, the PLC module controller 16 is set to output one path of power air pressure of the rotary table 3 to the rotary table power cylinder 5, and power is provided to enable the rotary table 3 to drive the cut object to rotate together for cutting. In order to avoid the generation of high temperature caused by the friction between the cutting tool 6 and the cut object in the cutting process, the clamping force of the cutting tool 6 is controlled; secondly, controlling the cutting rotating speed; the rotating speed of the rotating platform 3 is controlled at 20-60/min by adjusting and setting the output of the power air pressure of the PLC modular controller 16 according to different target piece cladding materials.
The power air pressure of the up-and-down movement of the positioning frame 8 is set to output 3 atm to the positioning frame power cylinder 11 by the PLC modular controller 16, so that the up-and-down movement of the positioning frame 8 can be guaranteed.
The PLC modular controller 16 adopts a Siemens high-end control system S7-1500 system, controls PID output through logic programming, and controls the power air pressure output by each path. The cutting tool fixing frame 7 is provided with a sensor which automatically senses that the cut object is not stressed any more when the cutting is finished, and the PLC modular controller 16 responds quickly to cut off the power air pressure of each path and stop cutting. The response time of the S7-1500 system is 192ns, the response time of the sensor is 1us, and cutting can be stopped in time after cutting is finished, so that damage to the irradiated material in the target is avoided. Each power cylinder is provided with an air inlet valve and an air outlet valve which can buffer air pressure, and the working air pressure of each power cylinder can be automatically adjusted by setting the setting of the PLC (programmable logic controller) modular controller 16.
The technical scheme of the invention has the following characteristics:
1. compact structure and is suitable for operation in radioactive hot rooms.
The invention has compact structure and is suitable for working in a radioactive heat chamber. The method is simple to operate, is suitable for the target cutting and target dissolving process of the target after irradiation, ensures that the outer target cylinder of the target is reasonably cut, and is also suitable for cutting other radioactive products.
2. Toothless cutter, pneumatic cutting and reduction of radioactive contamination risk
The remote operation, the pneumatic power operation toothless cutter, the cold extrusion mode is adopted to extrude and cut the target piece cladding or other cylindrical objects, the dust and the debris are avoided, and the radioactive pollution risk is reduced
3. Accurate positioning and ensuring the realization of the cutting process requirement
The cutting work is completed by driving a cylinder to provide power, clamping, moving and rotating by adopting compressed air. The cutter is provided with a plurality of cylinders which are respectively used for clamping and rotating the cut object; and each cylinder is controlled by a PLC (digital operation programmable logic) modular controller outside the shielding hot chamber to input different working air pressures respectively to complete the cutting work. The cutting of the target or other articles to be cut is ensured, the safety requirement of the cutting process is met, and radioactive pollution to a hot chamber is avoided.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.
Claims (5)
1. A target cutting and target dissolving device for irradiating uranium foil target pieces is characterized in that: comprises a rotary rack (2), a rotary table (3), a target fixture (4), a longitudinal guide rail (9), a positioning rack (8), a cutting tool fixing rack (7) and a cutting tool (6); the target piece clamp (4) is arranged on the rotating platform (3) and can rotate along with the rotating platform (3) to drive the target piece (10) to rotate; the cutting tool fixing frame (7) is arranged on the positioning frame (8); the cutting tool (6) is arranged on the cutting tool fixing frame (7) and can generate extrusion force on the target (10); the positioning frame (8) can move along the longitudinal guide rail (9) to move the cutting tool (6) on the cutting tool fixing frame (7) relative to the target (10); the rotating table (3) is arranged on the rotating table frame (2), and the rotating table frame (2) and the longitudinal guide rail (9) are relatively fixed in position; the cutting tool (6) is a gearless tool;
the rotating table (3), the target piece clamp (4), the positioning frame (8) and the cutting tool fixing frame (7) are respectively connected with a power cylinder to respectively provide operation power;
the compressed air source is connected with the power cylinder through a controller;
the PLC modular controller outputs different power air pressure according to different target piece cladding materials so as to control the rotating speed of the rotating platform (3) and the clamping force of the cutting tool (6).
2. The target-cutting decoy for irradiating a uranium foil target according to claim 1, wherein: the cutting tool (6) is made of tungsten carbide-based hard alloy.
3. The target-cutting decoy for irradiating a uranium foil target according to claim 2, wherein: the number of the cutting tools (6) is two, and the two cutting tools are symmetrically arranged on two sides of the cutting tool fixing frame (7).
4. The target-cutting decoy for irradiating a uranium foil target according to claim 1, wherein: the positioning frame (8) is arranged on the longitudinal guide rail (9) through a bearing (14).
5. The target-cutting decoy for irradiating a uranium foil target according to claim 1, wherein: and a limiting plate (15) is arranged at the top of the longitudinal guide rail (9).
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| CN105436616A (en) * | 2016-01-13 | 2016-03-30 | 中国工程物理研究院核物理与化学研究所 | Chipless irradiation capsule cutting machine |
| CN105499686A (en) * | 2016-01-13 | 2016-04-20 | 中国工程物理研究院核物理与化学研究所 | Target cutting device |
| WO2018212942A1 (en) * | 2017-05-16 | 2018-11-22 | Westinghouse Electric Company Llc | Radioisotope production target insert design and target harvesting methodology for long term irradiation in commercial nuclear reactors |
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