CN107804787B - Guide cylinder lifting tool - Google Patents
Guide cylinder lifting tool Download PDFInfo
- Publication number
- CN107804787B CN107804787B CN201710993164.2A CN201710993164A CN107804787B CN 107804787 B CN107804787 B CN 107804787B CN 201710993164 A CN201710993164 A CN 201710993164A CN 107804787 B CN107804787 B CN 107804787B
- Authority
- CN
- China
- Prior art keywords
- sleeve
- outer sleeve
- guide cylinder
- middle sleeve
- grippers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention belongs to the technical field of assembly tools for parts in nuclear reactors, and discloses a guide cylinder lifting tool which comprises an outer sleeve, a middle sleeve and an inner circular shaft, wherein the middle sleeve is sleeved in the outer sleeve, the outer wall of the middle sleeve is in clearance fit with the inner wall of the outer sleeve, the inner circular shaft is arranged in the middle of the outer sleeve, the outer diameter of the inner circular shaft is smaller than the inner diameter of the middle sleeve, the inner circular shaft is relatively fixed with the outer sleeve, lifting lugs are arranged above the outer sleeve, at least one pair of grippers are arranged below the middle sleeve through cylindrical pins, corresponding gripper channels are arranged on the side walls of the outer sleeve and the middle sleeve, the grippers can outwards open through the gripper channels, the lower end of the inner circular shaft is in a conical shape with the upper part being large and the lower part being small, and an operating rod is arranged at the upper end of the middle sleeve. The invention can safely and stably integrally withdraw the whole guide cylinder assembly from the interior of the internal pile component at one time.
Description
Technical Field
The invention belongs to the technical field of assembly tools for parts in nuclear reactors, and particularly relates to a guide cylinder hoisting tool.
Background
The guide cylinder assembly is an extremely important component in the nuclear reaction pressurized water reactor internal components, and the manufacturing precision requirement is high. The guide cylinder assembly is an integral part of the upper internals of the reactor, the guide cylinder is a guide assembly for the insertion of control rods into the core, and the upper part of the guide cylinder assembly is composed of a certain number of perforated flanges and square cylinders which have the same shape as the control rod assembly. The lower part is welded together by a plurality of C-shaped pipes and double-hole pipes through flanges. In the internals, a lower guide cylinder is mounted below the upper core support assembly, an upper guide cylinder is mounted above the upper core support assembly and below the IGA assembly, and the upper and lower guide cylinders are integrally connected by an intermediate flange through holes in an upper core support plate.
The guide cylinders need to be removed from the upper internals and transferred to the guide cylinder storage rack during assembly and maintenance of the internals. Above the guide cylinder is an instrumentation grid assembly (IGA assembly), and the operator cannot access the core to remove the lower guide cylinder without removing the IGA assembly and the upper core support assembly. Therefore, the guide cylinder assembly is long in disassembly and assembly work, complex in working procedure, easy to collide and fall into the reactor core due to fasteners in the disassembly and assembly process, high in maintenance cost and seriously affects the construction period.
When the guide cylinder is dismounted from the interior of the internal pile component, the existing method generally uses an upper guide cylinder lifting tool and a lower guide cylinder lifting tool, and the lower guide cylinder lifting tool can only lift the upper guide cylinder component or the lower guide cylinder component respectively and independently and cannot lift the whole guide cylinder component at the same time. When the upper guide cylinder and the lower guide cylinder are used for hoisting, workers are required to enter the interior of the internal pile member for operation. And when the lower guide cylinder is dismantled, the lower guide cylinder assembly can be lifted out by using the lower guide cylinder lifting tool after the IGA assembly, the upper guide cylinder assembly and the upper reactor core supporting assembly are all dismantled.
Disclosure of Invention
In order to solve the technical problems, the invention provides a guide cylinder lifting tool which can safely and stably integrally withdraw the whole guide cylinder assembly from the interior of a pile inner member.
The technical scheme adopted by the invention is as follows:
The utility model provides a guiding tube lifting device, its characterized in that includes outer sleeve, well sleeve and interior spindle, well sleeve cover is in the outer sleeve, well sleeve outer wall is clearance fit with the outer sleeve inner wall, interior spindle sets up the centre in the outer sleeve, the external diameter of interior spindle is less than well telescopic internal diameter, interior spindle is fixed with the outer sleeve relatively, the top of outer sleeve sets up the lug, well telescopic below sets up at least a pair of tongs through the cylindric lock, sets up corresponding tongs passageway at outer sleeve and well telescopic lateral wall, the tongs can pass tongs passageway outwards opens, interior spindle lower extreme is big-end-up's toper well telescopic upper end position sets up the action lever, when the action lever drives well sleeve upwards and removes, the conical effect of interior spindle lower extreme is received on the top of tongs, when the action lever drives well sleeve down, the tongs passageway lower extreme of outer sleeve is inwards drawn in to interior sleeve.
Further, the upper end of the middle sleeve is lower than the upper end of the outer sleeve by a distance, and the distance is that when the middle sleeve moves upwards until the grip is opened, the upper end of the middle sleeve is located below the upper end of the outer sleeve.
Further, the number of the grippers is four, and the grippers are arranged in a cross shape when the four grippers are opened.
Further, the operating rod passes through the vertical grooves on the outer sleeve and the inner circular shaft to be matched with the middle sleeve, and when the operating rod moves up and down in the vertical grooves, the operating rod drives the middle sleeve to move up and down.
Further, pin holes are formed in the operating rod, the outer sleeve and the inner circular shaft, and the operating rod can be fixed at a certain position in the middle of the vertical groove on the outer sleeve through the locking pin.
Further, the inner shaft is fixed in the outer sleeve through two locking pins, the two locking pins are arranged in a cross shape, and the inner shaft is fixed through pin holes in the outer sleeve and the inner shaft.
Further, the locking lock is connected to the outer sleeve by a flexible cord.
Further, the upper end of the outer sleeve is connected with the lifting lug through a flange.
Further, scale marks are arranged on the outer diameter of the outer sleeve.
Further, the lower part of the outer sleeve is sealed by a bottom block, and the bottom block is of a conical structure with a large upper part and a small lower part.
The beneficial effects of the invention are as follows:
(1) The disassembly and assembly are convenient, and the operation can be carried out on an operation platform at the upper part of the reactor core in a long distance;
(2) The upper guide cylinder assembly and the lower guide cylinder assembly can be separately lifted, and the guide cylinder assembly can be integrally lifted, so that the operation is simple, the occupied space is small, and the practicability is high;
(3) By arranging the rope, the parts are prevented from falling, the condition that the locking pin is adjusted into the reactor core in the operation process can be prevented, the maintainability of the guide cylinder assembly is improved, and the possibility that foreign matters fall into the reactor core is reduced;
(4) Under the condition that the IGA assembly and the upper reactor core supporting assembly are not dismounted, the guide cylinder assembly is directly lifted or inserted, so that the maintainability of the guide cylinder assembly is improved, the maintenance time is shortened, and the maintenance cost is reduced.
Drawings
FIG. 1 is a cross-sectional view of the structure of the grip of the present invention in its collapsed state;
FIG. 2 is a cross-sectional view of the structure of the present invention in the open state of the grip;
FIG. 3 is a cross-sectional view A-A of FIG. 1;
fig. 4 is a partial enlarged view of B in fig. 3.
The reference numerals in the drawings are respectively:
1. an outer sleeve; second, middle sleeve;
3. an inner circular shaft; fourth, lifting lugs;
5. a flange; sixthly, a locking pin;
7. hanging buckle; eighthly, a steel wire rope;
9. a grip; a cylindrical pin;
11. A gripper channel; 12, taper;
13. An operation lever; 14, a vertical groove;
15. a pin hole; 16, bottom block;
17. Graduation marks.
Detailed Description
The following describes the specific embodiments of the guide cylinder lifting tool according to the present invention in detail with reference to the accompanying drawings.
Referring to fig. 1, the guide cylinder lifting tool comprises an outer sleeve 1, a middle sleeve 2 and an inner circular shaft 3, wherein the middle sleeve 2 is sleeved in the outer sleeve 1, the outer wall of the middle sleeve 2 is in clearance fit with the inner wall of the outer sleeve 1, the inner circular shaft 3 is arranged in the middle of the outer sleeve 1, the outer diameter of the inner circular shaft 3 is smaller than the inner diameter of the middle sleeve 2, and the inner circular shaft 3 and the outer sleeve 1 are relatively fixed. The whole guide cylinder lifting tool is made of stainless steel, and has the total height of about 2700mm and the diameter phi 56mm so as to adapt to the assembly and disassembly of the guide cylinder.
And a lifting lug 4 is arranged above the outer sleeve 1, and the lifting lug 4 is connected with the crane and is used for lifting. The flange 5 is welded at the upper end of the outer sleeve 1, and the lifting lug 4 is fixedly connected with the flange 5. The inner shaft 3 and the outer sleeve 1 are fixed in the outer sleeve 1 through two locking pins 6, the two locking pins 6 are arranged in a cross shape, and the inner shaft 3 is fixed through pin holes 15 on the outer sleeve 1 and the inner shaft 3. The two locking pins 6 are staggered up and down. The upper part of the inner circular shaft 3 is flush with or slightly higher than the upper end part of the outer sleeve 1, the locking pin 6 and the flange 5 are welded with the hanging buckle 7, and the locking pin 6 is connected to the flange 5 through the soft steel wire rope 8 so as to prevent accidental falling.
Referring to fig. 1 and 4, at least one pair of grippers 9, two pairs in the drawing, are arranged below the middle sleeve 2 through a cylindrical pin 10. The two pairs of grippers 9 are rotatably arranged by respective cylindrical pins 10. The four cylindrical pins 10 are arranged in a square shape, and the upper four grippers 9 are arranged in a cross shape when opened. After the cylindrical pins 10 are arranged, the cylindrical pins are fixed in a spot welding mode so as to prevent falling, and the spot welding position is shown as a point C in fig. 4. Corresponding grip passages 11 are provided in the side walls of the outer sleeve 1 and the middle sleeve 2, through which grip passages 11 the grips 9 can be opened outwards, the height of the grip passages 11 being slightly larger than the length of the grips 9.
The upper end of the middle sleeve 2 is lower than the upper end of the outer sleeve 1 by a distance that is the upper end of the middle sleeve 2 is below the upper end of the outer sleeve 1 when the middle sleeve 2 moves upwards until the handles 9 are opened. The lower end of the inner circular shaft 3 is a cone 12 with a large upper part and a small lower part, an operating rod 13 is arranged at the upper end of the middle sleeve 2, the operating rod 13 passes through the outer sleeve 1 and a vertical groove 14 on the inner circular shaft 3 to be matched with the middle sleeve 2, and the operating rod 13 drives the middle sleeve 2 to move up and down when moving up and down in the vertical groove 14. The operating rod 13, the outer sleeve 1 and the inner shaft 3 are provided with pin holes 15, and the operating rod 13 can be fixed at a certain position in the middle of the vertical groove 14 on the outer sleeve 1 through the locking pin 6. The locking pin 6 on the operating rod 13 is likewise connected to the flange 5 of the outer sleeve 1 by means of a flexible wire rope 8.
The lower part of the outer sleeve 1 is sealed by a bottom block 16, the bottom block 16 is of a conical structure with a big top and a small bottom, the bottom block 16 is used for supporting the middle sleeve 2, and a lifting tool is convenient to insert into the guide cylinder. The outer diameter of the outer sleeve 1 is provided with scale marks 17, and the inserting position and the moment for opening the grippers 9 are accurately controlled.
The hoisting process of the hoisting tool to the guide cylinder will be described below with reference to the accompanying drawings.
Referring to fig. 1, after the assembly of each component is completed, a lifting tool is formed, when the lifting tool is used, the operating rod 13 is locked, the lifting tool is slowly inserted into the guide cylinder after being lifted by the crane, and the equipment is kept stable in the lifting process. And determining the insertion position of the hoisting tool according to the scale marks 17 on the outer sleeve 1, so that the grip passage 11 of the outer sleeve 1 is positioned below the guide cylinder, and stopping hoisting after the position is reached.
Referring to fig. 2, the locking pin 6 on the operating lever 13 is released, the operating lever 13 moves upward, the operating lever 13 drives the middle sleeve 2 to move upward, when the grip 9 below the middle sleeve 2 moves upward, the grip 9 acts on the conical head 12 below the inner circular shaft 3, and is opened outward, at this time, the grip channels 11 of the middle sleeve 2 and the outer sleeve 1 gradually coincide, the grip 9 is opened from the grip channels 11, and the grip 9 is fixed when being opened to a horizontal position due to the blocking below the grip channels 11. At this time, the operation lever 13 is locked again, and the hoisting tool is hoisted by a crane, and the hoisting tool hoistes the guide cylinder by the grip 9.
After the guide cylinder is lifted, the next station is moved, the operating rod 13 is unlocked, the operating rod 13 is moved downwards, and the handle 9 is folded upwards and retracted into the middle sleeve 2 due to the action of the lower bottom edge of the handle channel 11 on the outer sleeve 1 and the handle 9. And (5) completing the primary guide cylinder hanging and detaching process.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (8)
1. A guiding tube lifting device, its characterized in that: the inner sleeve is sleeved in the outer sleeve, the outer wall of the middle sleeve is in clearance fit with the inner wall of the outer sleeve, the inner shaft is arranged in the middle of the outer sleeve, the outer diameter of the inner shaft is smaller than the inner diameter of the middle sleeve, the inner shaft is relatively fixed with the outer sleeve, a lifting lug is arranged above the outer sleeve, at least one pair of grippers are arranged below the middle sleeve through cylindrical pins, corresponding gripper channels are arranged on the side walls of the outer sleeve and the middle sleeve, the grippers can be outwards opened through the gripper channels, the lower end of the inner shaft is in a conical shape with the upper part of the middle sleeve, an operating rod is arranged at the upper end position of the middle sleeve, when the operating rod drives the middle sleeve to move upwards, the top end of the grippers is outwards opened from the gripper channels under the conical action of the lower end of the inner shaft, and when the operating rod drives the middle sleeve to move downwards, the lower end of the gripper channels acts on the outer walls of the grippers, and the grippers are inwards folded into the middle sleeve; the upper end of the middle sleeve is lower than the upper end of the outer sleeve by a distance, and the distance is that when the middle sleeve moves upwards until the grip is opened, the upper end of the middle sleeve is positioned below the upper end of the outer sleeve; the operating rod passes through the vertical grooves on the outer sleeve and the inner circular shaft to be matched with the middle sleeve, and when the operating rod moves up and down in the vertical grooves, the middle sleeve is driven to move up and down.
2. The guide cylinder lifting tool according to claim 1, wherein: the number of the grippers is four, and the grippers are arranged in a cross shape when opened.
3. The guide cylinder lifting tool according to claim 1, wherein: the operating rod, the outer sleeve and the inner circular shaft are provided with pin holes, and the operating rod can be fixed at a certain position in the middle of the vertical groove on the outer sleeve through the locking pin.
4. A guide cylinder lifting tool according to any one of claims 1 to 3, wherein: the inner circular shaft is fixed in the outer sleeve through two locking pins, the two locking pins are arranged in a cross manner, and the inner circular shaft is fixed through pin holes in the outer sleeve and the inner circular shaft.
5. The guide cylinder lifting tool according to claim 4, wherein: the locking pin is connected to the outer sleeve through a soft rope.
6. A guide cylinder lifting tool according to any one of claims 1 to 3, wherein: the upper end of the outer sleeve is connected with the lifting lug through a flange.
7. A guide cylinder lifting tool according to any one of claims 1 to 3, wherein: and scale marks are arranged on the outer diameter of the outer sleeve.
8. A guide cylinder lifting tool according to any one of claims 1 to 3, wherein: the lower part of the outer sleeve is sealed by a bottom block, and the bottom block is of a conical structure with a big top and a small bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710993164.2A CN107804787B (en) | 2017-10-23 | 2017-10-23 | Guide cylinder lifting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710993164.2A CN107804787B (en) | 2017-10-23 | 2017-10-23 | Guide cylinder lifting tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107804787A CN107804787A (en) | 2018-03-16 |
| CN107804787B true CN107804787B (en) | 2024-05-24 |
Family
ID=61584640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710993164.2A Active CN107804787B (en) | 2017-10-23 | 2017-10-23 | Guide cylinder lifting tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107804787B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109701788A (en) * | 2019-02-20 | 2019-05-03 | 东易日盛智能家居科技有限公司 | A kind of electrostatic powder coating line production capacity promotion lifting hanger |
| CN110176321B (en) * | 2019-06-19 | 2023-03-21 | 中广核研究院有限公司 | Method and device for replacing guide cylinder of reactor control rod |
| CN110767337B (en) * | 2019-10-29 | 2021-08-20 | 中国原子能科学研究院 | Flange connection structure |
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|---|---|---|---|---|
| US5320395A (en) * | 1992-09-25 | 1994-06-14 | Oceaneering International, Inc. | Microconical interface fitting and interface grasping tool |
| RU2224085C2 (en) * | 2002-01-15 | 2004-02-20 | Общество с ограниченной ответственностью "Научно-исследовательский институт природных газов и газовых технологий-ВНИИГАЗ" | Rope catching device |
| CN102241359A (en) * | 2011-07-13 | 2011-11-16 | 中国核电工程有限公司 | Hook claw-extending type unpowered automatic hoisting tool |
| CN103496629A (en) * | 2013-09-18 | 2014-01-08 | 张家港市沙洲钢绳有限公司 | Lifting hand grab of steel wire ring |
| CN105383925A (en) * | 2015-12-04 | 2016-03-09 | 广西农垦糖业集团柳兴制糖有限公司 | Cane grabbing device |
| CN205838354U (en) * | 2016-07-25 | 2016-12-28 | 江苏建筑职业技术学院 | Cartridge type pipe fitting vertical lifting fixture |
| CN206263862U (en) * | 2016-11-15 | 2017-06-20 | 三门核电有限公司 | A kind of pad instrument installed for upper-part in-reactor component control rod guide tubes and bundles |
| CN206427947U (en) * | 2016-11-29 | 2017-08-22 | 湖北三江航天红阳机电有限公司 | A kind of boom hoisting |
| CN207511684U (en) * | 2017-10-23 | 2018-06-19 | 上海第一机床厂有限公司 | Guide cylinder lifting device |
-
2017
- 2017-10-23 CN CN201710993164.2A patent/CN107804787B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5320395A (en) * | 1992-09-25 | 1994-06-14 | Oceaneering International, Inc. | Microconical interface fitting and interface grasping tool |
| RU2224085C2 (en) * | 2002-01-15 | 2004-02-20 | Общество с ограниченной ответственностью "Научно-исследовательский институт природных газов и газовых технологий-ВНИИГАЗ" | Rope catching device |
| CN102241359A (en) * | 2011-07-13 | 2011-11-16 | 中国核电工程有限公司 | Hook claw-extending type unpowered automatic hoisting tool |
| CN103496629A (en) * | 2013-09-18 | 2014-01-08 | 张家港市沙洲钢绳有限公司 | Lifting hand grab of steel wire ring |
| CN105383925A (en) * | 2015-12-04 | 2016-03-09 | 广西农垦糖业集团柳兴制糖有限公司 | Cane grabbing device |
| CN205838354U (en) * | 2016-07-25 | 2016-12-28 | 江苏建筑职业技术学院 | Cartridge type pipe fitting vertical lifting fixture |
| CN206263862U (en) * | 2016-11-15 | 2017-06-20 | 三门核电有限公司 | A kind of pad instrument installed for upper-part in-reactor component control rod guide tubes and bundles |
| CN206427947U (en) * | 2016-11-29 | 2017-08-22 | 湖北三江航天红阳机电有限公司 | A kind of boom hoisting |
| CN207511684U (en) * | 2017-10-23 | 2018-06-19 | 上海第一机床厂有限公司 | Guide cylinder lifting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107804787A (en) | 2018-03-16 |
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