CN111804970B - Translation type shearing assembly for dismantling nuclear reactor detector assembly - Google Patents
Translation type shearing assembly for dismantling nuclear reactor detector assembly Download PDFInfo
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- CN111804970B CN111804970B CN202010717586.9A CN202010717586A CN111804970B CN 111804970 B CN111804970 B CN 111804970B CN 202010717586 A CN202010717586 A CN 202010717586A CN 111804970 B CN111804970 B CN 111804970B
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- cutter
- main shaft
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- shearing
- nuclear reactor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D33/00—Accessories for shearing machines or shearing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D33/00—Accessories for shearing machines or shearing devices
- B23D33/02—Arrangements for holding, guiding, and/or feeding work during the operation
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- Mechanical Engineering (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
The invention discloses a translation type shearing assembly for disassembling a nuclear reactor detector assembly, which comprises a rotating motor, a left main shaft and a right main shaft, wherein the left main shaft is connected with the left main shaft through a connecting rod; the left main shaft is provided with a left cutter, the right main shaft is provided with a right cutter in a sliding manner, the left cutter and the right cutter are respectively arranged on two sides of the detector assembly during shearing, the right cutter is connected with a power output shaft of the driving mechanism, and the outer walls of the left main shaft and the right main shaft are respectively provided with a straight gear assembly I and a straight gear assembly II; the output of rotating electrical machines is provided with many output reduction gear I, many output reduction gear I's horizontal end and vertical end are provided with telescopic transmission shaft and first vertical transmission shaft respectively, first vertical transmission shaft is connected with straight-teeth gear assembly II, telescopic transmission shaft's tip passes through the vertical transmission shaft of second and is connected with straight-teeth gear assembly I. The invention realizes the dismantling and separation of the high-activity section and the low-activity section of the detector assembly.
Description
Technical Field
The invention relates to the technical field of refueling and overhauling of pressurized water reactor nuclear power plants, in particular to a translation type shearing assembly for disassembling a nuclear reactor detector assembly.
Background
Detectors for core measurement systems in second-generation and second-generation pressurized water reactor nuclear power stations are divided into thermocouples for measuring temperature and neutron flux detectors for measuring flux. The thermocouple is led in from the top cover of the pressure vessel, guided by the thermocouple column assembly and positioned at a specified measuring point position, and the lower end of the thermocouple is positioned at the core outlet of the upper core plate. The flux detector is led in from the bottom end socket of the pressure vessel, and is guided by the instrument sleeve and the finger sleeve when needed to enter the guide pipe in the fuel assembly at a specified measuring point. The design life of both detector assemblies is the plant's full life, not considering replacement except for special cases. Power plants at home and abroad have been replaced precedently, and an underwater shearing tool is adopted to replace the damaged flux detector individually.
The detector for the third-generation nuclear power station reactor core measuring system is changed into a detector which is completely introduced from a pressure vessel top cover, and the detector assembly is guided to a specified measuring point position through a guide structure arranged on an in-reactor component until the detector assembly is inserted into a guide pipe in the middle of a fuel assembly for a certain depth. The detector assembly inserted into the core has a housing of type 304 stainless steel with neutron detection elements and thermocouples inside. The probe assembly is typically installed after the reactor is installed in the fuel assembly and inserted into the fuel assembly during operation until the useful life of the probe assembly is reached. Due to burnup and irradiation effects, the life of the detector generally does not reach 60 years in a nuclear power plant, and therefore, after the detector assembly reaches a certain service life, the detector assembly needs to be removed to the life during refueling. The detector assembly is divided into a high-radioactivity section and a low-radioactivity section, and the high-radioactivity section and the low-radioactivity section are separated in the dismantling work, so that later-stage transportation, storage and disposal are facilitated.
Disclosure of Invention
The invention provides a translation type shearing assembly for removing a nuclear reactor detector assembly, which realizes the removal and separation of a high-activity section and a low-activity section of the detector assembly.
The invention is realized by the following technical scheme:
a translation type shearing assembly for disassembling a nuclear reactor detector assembly comprises a rotating motor, a left main shaft and a right main shaft;
the left main shaft is provided with a left cutter, the right main shaft is provided with a right cutter in a sliding manner, the left cutter and the right cutter are respectively arranged on two sides of the detector assembly during shearing, the right cutter is connected with a power output shaft of the driving mechanism, and the outer walls of the left main shaft and the right main shaft are respectively provided with a straight gear assembly I and a straight gear assembly II;
the output of rotating electrical machines is provided with many output reduction gear I, many output reduction gear I's horizontal end and vertical end are provided with telescopic transmission shaft and first vertical transmission shaft respectively, first vertical transmission shaft is connected with straight-teeth gear assembly II, telescopic transmission shaft's tip passes through the vertical transmission shaft of second and is connected with straight-teeth gear assembly I.
The left spindle and the right spindle are arranged oppositely, and preferably, the left spindle and the right spindle are arranged on the same horizontal line.
The telescopic transmission shaft is in the prior art, can be extended or shortened, and realizes the adjustment of the relative position between the left main shaft and the right main shaft.
The rotating motor of the invention generates two same rotating outputs under the action of the multi-output reducer I, and the two same rotating outputs respectively act on the left main shaft and the right main shaft, and then the left main shaft and the right main shaft drive the left cutter and the right cutter to synchronously rotate, thereby ensuring the rotating synchronism of the left cutter and the right cutter.
The left side cutter and the right side cutter form a shearing cutter, the right side cutter is driven by the driving mechanism to translate along the direction of the left side cutter, and the shearing function is realized.
In conclusion, the shearing knife is formed by arranging the left cutter and the right cutter, and the shearing of the detector is realized by the opposite translation motion of the left cutter and the right cutter.
Further, still include the shear motor, the output of shear motor connects gradually multi-output reduction gear II, switching-over reduction gear II, flexible hinge and transmission shaft, the transmission shaft is connected with actuating mechanism and is changed rotary motion into linear motion.
The shear motor rotates, and after passing through the multi-output reducer II, the reversing reducer II, the flexible hinge and the transmission shaft, the rotary motion is transmitted to the electric cylinder, so that the rotary motion is converted into linear motion.
The right side cutter translates along the left side cutter direction under the drive of the shearing motor, so that the shearing function is realized. The shearing speed and the shearing force can be freely adjusted, and the shearing method is very simple and reliable; appropriate parameter adjustments may be made for the different detectors.
Further, the left-side cutter and the right-side cutter have a certain gap in the installation vertical direction.
Avoid the cutter to bump when cuting, improved the reliability of cutter.
Furthermore, the left side cutter and the right side cutter are respectively and detachably arranged inside the left main shaft and the right main shaft.
The cutter is arranged inside the main shaft, so that the mounting space is saved. The cutter can not interfere with the outside when shearing under the protection of the main shaft, and effectively avoids the phenomenon of clamping grooves caused by sundries entering the cutter moving groove.
Further, the inside first logical groove that is provided with of left side main shaft, first logical groove is parallel with the axial of left side main shaft, left side cutter one end is installed on the handle of a knife of left side, the detachable setting of left side handle of a knife is in first logical groove.
When the left side cutter is damaged due to the arrangement, the tail part (the end far away from the left side cutter) of the left side main shaft can be pulled out, and the quick replacement is realized.
Further, the left side handle of a knife passes through the cutter preforming and sets up on the left side main shaft.
The cutter preforming is rectangular plate, be provided with 2 screw through-holes on the rectangular plate, 2 screw through-holes are respectively in left side handle of a knife both sides, fix the cutter preforming on the left side main shaft through the screw.
Further, the inside second through groove that is provided with of right side main shaft, the second leads to the groove and is parallel with the axial of right side main shaft, right side cutter one end is installed on the right side handle of a knife, the right side handle of a knife sets up at the logical inslot of second, be provided with the shearing pin on the handle of a knife of right side perpendicularly, be provided with the spout that is used for realizing shearing pin along axial displacement on the main shaft of right side, the tip protrusion in the spout of shearing pin, the outer wall of right side main shaft slides and is provided with the cutter push rod, the cutter push rod sets up between shearing pin and actuating mechanism.
When the right side cutter is damaged due to the arrangement, the tail portion (the end far away from the right side cutter) of the right side main shaft can be pulled out, and quick replacement is achieved.
Furthermore, the end parts of the left main shaft and the right main shaft are provided with clamping grooves matched with the detector assembly.
The main shaft has a clamping function, can clamp the detector before the cutter is cut, and ensures that the cut lower detector cannot fall off.
Further, the edges of the left side cutter and the right side cutter are provided with chamfers.
The shear life of left side cutter and right side cutter can effectively be improved to above-mentioned setting.
Furthermore, the end part of the telescopic transmission shaft is connected with the second vertical transmission shaft through a reversing speed reducer I.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the cutting tool has a simple and reliable cutting mode; the shearing of the detector assembly is realized by the opposite translation motion of the left and right cutters, and the operation is simple; the edges of the left and right cutters are slightly chamfered, so that the cutting life of the cutters is effectively prolonged; the left and right cutters have a tiny gap in the vertical direction, so that the cutters are prevented from colliding during shearing, and the reliability of the cutters is improved; the shearing force and the shearing speed of the cutter can be controlled, and the proper parameter adjustment can be carried out on different detectors.
2. The translational shearing mode greatly reduces the size of the cutter, and meanwhile, the cutter is arranged in the main shaft, so that the installation space required by the cutter is saved. The cutter can not interfere with the outside when shearing under the protection of the main shaft, and the phenomenon of clamping grooves caused by sundries entering the cutter moving groove is avoided to a great extent.
3. The main shaft has a clamping function, can clamp the detector before the cutter is cut, and ensures that the cut lower detector cannot fall off.
4. The cutter can rotate along with the main shaft, the rotation of the cutters at two sides is realized by the same motor, and the synchronism of the cutters at two sides is ensured; the cutter can be taken out from the tail of the main shaft, so that the quick replacement is realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a cross-sectional view of a translating shear assembly;
fig. 2 is an overall schematic view of a translating shear assembly.
Reference numbers and corresponding part names in the drawings:
1-a reversing reducer I; 2-a telescopic transmission shaft; 3-a multi-output reducer I; 4-a rotating electrical machine; 5-tabletting by a cutter; 6-straight gear component I; 7-left spindle; 8-left side tool shank; 9-left side cutter; 10-a shear motor; 11-multiple output reducer II; 12-a commutation reducer II; 13-a flexible hinge; 14-a drive shaft; 15-spur gear assembly II; 16-right side cutter; 17-right side shank; 18-right spindle; 19-shear pins; 20-a cutter pusher; 21-a drive mechanism.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1:
as shown in fig. 1 and 2, a translational shearing assembly for removing a nuclear reactor detector assembly comprises a rotating motor 4, a left main shaft 7 and a right main shaft 18;
the left main shaft 7 is provided with a left cutter 9, the right main shaft 18 is provided with a right cutter 16 in a sliding manner, the left cutter 9 and the right cutter 16 are respectively arranged at two sides of the detector assembly during shearing, the right cutter 16 is connected with a power output shaft of the driving mechanism 21, the outer walls of the left main shaft 7 and the right main shaft 18 are respectively provided with a straight gear assembly I6 and a straight gear assembly II15, and the driving mechanism 21 is an electric cylinder;
the output of rotating electrical machines 4 is provided with many output reduction gear I3, many output reduction gear I3's horizontal end and vertical end are provided with telescopic transmission shaft 2 and first vertical transmission shaft respectively, first vertical transmission shaft is connected with straight-teeth gear subassembly II15, telescopic transmission shaft 2's tip is connected with the vertical transmission shaft of second through switching-over reduction gear I1, and the vertical transmission shaft of second is connected with straight-teeth gear subassembly I6.
The working process of the embodiment is as follows:
after the detector assembly is clamped between the left spindle 7 and the right spindle 18, an electric cylinder is driven, the electric cylinder pushes the right cutter 16 to translate towards the left cutter, so that the shearing function can be realized, after the shearing is finished, the rotating motor 4 rotates, after the shearing passes through a multi-output speed reducer I3, the rotating motion is respectively transmitted to a straight gear assembly I6 and a straight gear assembly II15 through a reversing speed reducer I1 and the like, the straight gear assembly I6 and the straight gear assembly II15 respectively drive the left spindle 7 and the right spindle 18 to rotate, and the cutter arranged inside the spindles also rotates along with the rotation.
Example 2:
as shown in fig. 1 and fig. 2, the present embodiment is based on embodiment 1, and further includes a shear motor 10, an output end of the shear motor 10 is sequentially connected with a multi-output speed reducer II11, a reversing speed reducer II12, a flexible hinge 13, and a transmission shaft 14, and the transmission shaft 14 is connected with a driving mechanism 21.
In this embodiment, after the probe assembly is clamped between the left spindle 7 and the right spindle 18, the shear motor 10 rotates, and after passing through the multi-output reducer II11, the reversing reducer II12, the flexible hinge 13, and the drive shaft 14, the rotational motion is transmitted to the drive structure 21, thereby converting the rotational motion into linear motion.
Example 3:
as shown in fig. 1 and fig. 2, in the present embodiment, based on embodiment 1, the left-side tool 9 and the right-side tool 16 are detachably mounted inside the left-side spindle 7 and the right-side spindle 18, respectively, specifically:
a first through groove is formed in the left spindle 7 and is parallel to the axial direction of the left spindle 7, one end of a left cutter 9 is mounted on a left cutter handle 8, and the left cutter handle 8 is arranged on the left spindle 7 through a cutter pressing sheet 5;
the inside second through groove that is provided with of right side main shaft 18, the second leads to groove and the axial direction parallel of right side main shaft 18, 16 one end of right side cutter are installed on right side handle of a knife 17, right side handle of a knife 17 sets up in the second through groove, be provided with shearing pin 19 on the right side handle of a knife 17 perpendicularly, be provided with the spout that is used for realizing shearing pin 19 along axial displacement on the main shaft 18 of right side, shearing pin 19's tip protrusion in spout, the outer wall of right side main shaft 18 slides and is provided with cutter push rod 20, cutter push rod 20 sets up between shearing pin 19 and actuating mechanism 21.
In the embodiment, the left side cutter 9 and the left side cutter handle 8 are arranged inside the left side spindle 7 through the cutter pressing sheet 5, and the right side cutter 16 and the right side cutter handle 17 are arranged inside the right side spindle 18 through the shearing pin 19; after the left main shaft 7 and the right main shaft 18 clamp the detector, the shearing motor 10 rotates, and after passing through the multi-output speed reducer II11, the reversing speed reducer II12, the flexible hinge 13 and the transmission shaft 14, the rotary motion is transmitted to the driving mechanism 21, so that the rotary motion is converted into linear motion; after the driving mechanism 21 is connected with the cutter push rod 20, the right cutter 16 is driven by the shearing pin 19 to translate towards the left cutter 9, and the shearing function can be realized.
When the cutter needs to be replaced, the cutter pressing sheet 5 is taken down, and the left cutter handle 8 and the left cutter 9 are drawn out together from the tail part of the left spindle 7, so that the replacement of the left cutter is completed; similarly, the shear pin 19 is pulled out, and the right shank 17 and the right cutter 16 are pulled out together from the tail of the right spindle 18, thereby completing the replacement of the right cutter.
Example 4:
as shown in fig. 1 and 2, in the present embodiment, based on any one of embodiment 1 to embodiment 3, the left-hand tool 9 and the right-hand tool 16 have a certain gap in the installation vertical direction; the end parts of the left main shaft 7 and the right main shaft 18 are respectively provided with a clamping groove matched with the detector component; the edges of the left side cutter 9 and the right side cutter 16 are provided with chamfers.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A translation type shearing assembly for removing a nuclear reactor detector assembly is characterized by comprising a rotating motor (4), a left main shaft (7) and a right main shaft (18);
a left side cutter (9) is arranged on the left side main shaft (7), a right side cutter (16) is arranged on the right side main shaft (18) in a sliding mode, the left side cutter (9) and the right side cutter (16) are arranged on two sides of the detector assembly respectively during shearing, the right side cutter (16) is connected with a power output shaft of the driving mechanism (21), and a straight gear assembly I (6) and a straight gear assembly II (15) are arranged on the outer walls of the left side main shaft (7) and the right side main shaft (18) respectively;
the output of rotating electrical machines (4) is provided with many output reduction gear I (3), the level end and the vertical end of many output reduction gear I (3) are provided with scalable transmission shaft (2) and first vertical transmission shaft respectively, first vertical transmission shaft is connected with straight-teeth gear subassembly II (15), the tip of scalable transmission shaft (2) is passed through the vertical transmission shaft of second and is connected with straight-teeth gear subassembly I (6).
2. The translational shearing assembly for disassembling the nuclear reactor detector assembly according to claim 1, further comprising a shearing motor (10), wherein an output end of the shearing motor (10) is sequentially connected with a multi-output reducer II (11), a reversing reducer II (12), a flexible hinge (13) and a transmission shaft (14), and the transmission shaft (14) is connected with a driving mechanism (21).
3. A nuclear reactor detector assembly removal translational shear assembly as claimed in claim 1, wherein the left hand cutter (9) and the right hand cutter (16) have a clearance in the vertical direction of installation.
4. Translational shear assembly for the removal of a nuclear reactor probe assembly according to claim 1, characterized in that said left (9) and right (16) cutters are removably mounted inside a left (7) and right (18) main shaft, respectively.
5. The translational shearing assembly for dismantling the nuclear reactor detector assembly as recited in claim 4, wherein a first through groove is formed in the left main shaft (7), the first through groove is axially parallel to the left main shaft (7), one end of the left cutter (9) is mounted on the left cutter handle (8), and the left cutter handle (8) is detachably arranged in the first through groove.
6. The translational shear assembly for removing the probe assembly of a nuclear reactor as recited in claim 5, wherein the left-hand shank (8) is disposed on the left-hand spindle (7) by means of a cutter blade (5).
7. The translational shearing assembly for dismantling the nuclear reactor detector assembly according to claim 4, wherein a second through groove is formed in the right main shaft (18), the second through groove is axially parallel to the right main shaft (18), one end of the right cutter (16) is mounted on the right cutter handle (17), the right cutter handle (17) is arranged in the second through groove, the right cutter handle (17) is vertically provided with a shearing pin (19), the right main shaft (18) is provided with a sliding groove for realizing the axial movement of the shearing pin (19), the end of the shearing pin (19) protrudes out of the sliding groove, the outer wall of the right main shaft (18) is provided with a cutter push rod (20) in a sliding manner, and the cutter push rod (20) is arranged between the shearing pin (19) and the driving mechanism (21).
8. The translational shear assembly for removing the probe assembly of a nuclear reactor as claimed in claim 1, characterized in that the ends of the left main shaft (7) and the right main shaft (18) are provided with a slot cooperating with the probe assembly.
9. Translational shear assembly for the removal of nuclear reactor detector assemblies according to claim 1, characterized in that the edges of the left (9) and right (16) cutters are provided with chamfers.
10. Translational shear assembly for the removal of a nuclear reactor probe assembly according to any one of claims 1 to 9, characterized in that the end of the telescopic drive shaft (2) is connected to the second vertical drive shaft by means of a reversing reducer I (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010717586.9A CN111804970B (en) | 2020-07-23 | 2020-07-23 | Translation type shearing assembly for dismantling nuclear reactor detector assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010717586.9A CN111804970B (en) | 2020-07-23 | 2020-07-23 | Translation type shearing assembly for dismantling nuclear reactor detector assembly |
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| Publication Number | Publication Date |
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| CN111804970A CN111804970A (en) | 2020-10-23 |
| CN111804970B true CN111804970B (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010717586.9A Active CN111804970B (en) | 2020-07-23 | 2020-07-23 | Translation type shearing assembly for dismantling nuclear reactor detector assembly |
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| CN111014799A (en) * | 2019-11-19 | 2020-04-17 | 常德鑫睿新材料有限公司 | Non ferrous metal material cuts device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101126426B1 (en) * | 2010-01-26 | 2012-03-28 | 박영근 | Apparatus for forming groove |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2584333Y (en) * | 2002-09-13 | 2003-11-05 | ***电子第二研究所 | Driving device of liquid crystal filleting machine |
| DE202004004104U1 (en) * | 2003-04-14 | 2004-05-13 | I.M.B. S.R.L., Busseto | Tool for cutting bars |
| CN103962624A (en) * | 2014-05-13 | 2014-08-06 | 苏州亘富机械科技有限公司 | Self-adaptive full-automatic pipe cutting machine |
| CN106378485A (en) * | 2016-11-24 | 2017-02-08 | 无锡市伟丰印刷机械厂 | Quick iron rod cut-off equipment for sintered neodymium iron boron production |
| CN108687396A (en) * | 2017-04-07 | 2018-10-23 | 米沃奇电动工具公司 | Cutting tool |
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