CN113830655A - Hoisting device and hoisting method for reactor control rod position detector - Google Patents
Hoisting device and hoisting method for reactor control rod position detector Download PDFInfo
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- CN113830655A CN113830655A CN202111155235.4A CN202111155235A CN113830655A CN 113830655 A CN113830655 A CN 113830655A CN 202111155235 A CN202111155235 A CN 202111155235A CN 113830655 A CN113830655 A CN 113830655A
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- rod position
- position detector
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- base
- hoisting
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 3
- 210000003128 head Anatomy 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention discloses a hoisting device and a hoisting method of a reactor control rod position detector, wherein the hoisting device comprises a base, at least two lifting lugs and a plurality of bolts, wherein the base is sleeved at the top end of the rod position detector; the base is provided with a plurality of connecting holes which are oppositely communicated with screw holes on the top end of the rod position detector, the head of each bolt is provided with a driving part, and a connecting rope is connected between the driving part and the lifting lug; the bolt is locked in the connecting hole and the screw hole which are communicated oppositely through rotation, and the base is fixed on the rod position detector. According to the hoisting device for the reactor control rod position detector, the bolt is arranged through the driving part, so that the bolt can be loosened and tightened by direct manual rotation without using tools such as a spanner, the operation is convenient, the bolt can be quickly disassembled and assembled, and the efficiency is improved; the bolt is connected on hoist device through connecting the rope, has also eliminated the bolt and has taken place the risk that falls at the dismouting in-process.
Description
Technical Field
The invention relates to the technical field of hoisting of nuclear power equipment, in particular to a hoisting device and a hoisting method for a reactor control rod position detector.
Background
In a nuclear power station, a reactor control Rod Position detector (hereinafter referred to as an RPI detector: Rod Position Indicator) is used as an important item of reactor composition, and plays an important role in safe and stable operation of the nuclear power station. The RPI detector is a part of a reactor pressure vessel top cover, and the assembly of the pressure vessel top cover is completed in a top cover assembly storage room special for a reactor factory building (hereinafter referred to as RX factory building); the installation process of the RPI probe is performed on a 20-meter platform in the RX plant.
During installation, firstly, the lifting appliance and the RPI detector are connected and fixed under the condition that the lifting appliance and the RPI detector are horizontally placed by using bolts, then the RPI detector is lifted by using a ring crane of an RX workshop and is placed between the top covers, after the placement is completed, the detector fixing bolt which is in place and in a vertical state needs to be detached from the lifting appliance, and the next RPI detector is lifted, and the process is repeated.
Because the RPI detector is installed in the top cover of the reactor pressure vessel, the installation space is narrow, the installation requirement is high, the installation time window is limited, the requirements on strict foreign matter control and the like are met, the lifting appliance of the RPI detector needs to be repeatedly disassembled and assembled, the efficiency is low, and meanwhile, the risk of falling (if the fixing bolt falls into the top cover) exists in the disassembling and assembling process.
Disclosure of Invention
The invention aims to provide a lifting device and a lifting method of a reactor control rod position detector, which improve efficiency and eliminate bolt falling risks.
The technical scheme adopted by the invention for solving the technical problems is as follows: the hoisting device comprises a base, at least two lifting lugs and a plurality of bolts, wherein the base is used for being sleeved at the top end of the reactor control rod position detector, the lifting lugs are connected to the base and are used for being connected with hoisting equipment, and the bolts are respectively hoisted on at least one lifting lug through connecting ropes;
the base is provided with a plurality of connecting holes which are oppositely communicated with screw holes on the top end of the rod position detector, the head of each bolt is provided with a driving part which is used for holding the bolt to rotate, and the connecting rope is connected between the driving part and the lifting lug; the bolt is locked in the connecting hole and the screw hole which are communicated oppositely through rotation, and the base is fixed on the top end of the rod position detector.
Preferably, the base comprises a bottom plate and a central hole which is arranged on the bottom plate and penetrates through two opposite surfaces of the bottom plate; the base is sleeved at the top end of the rod position detector through the central hole;
the connecting holes are arranged on the bottom plate and distributed at intervals around the central hole.
Preferably, the bottom plate is a rectangular plate with two arc-shaped wide edges.
Preferably, the lifting lug comprises a vertical plate vertically connected to the base and a lifting hole arranged at the upper end of the vertical plate;
one end of the connecting rope is connected to the driving part of the bolt, and the other end of the connecting rope penetrates through the lifting hole to be connected to the vertical plate.
Preferably, the driving part is a ring body vertically connected to the head of the bolt.
Preferably, the driving part is a plate vertically connected to the head of the bolt, and a through hole is formed in the plate and used for penetrating the connecting rope.
Preferably, the plate member is a circular plate, an elliptical plate, or a polygonal plate.
Preferably, the reactor control rod position detector hoisting device comprises four bolts; the four bolts are respectively connected to the two lifting lugs in a hanging mode through the connecting ropes.
The invention also provides a hoisting method of the reactor control rod position detector, which adopts any one of the hoisting devices of the reactor control rod position detector; the hoisting method comprises the following steps:
s1, under the condition that the reactor control rod position detector is horizontally placed, sleeving the base of the hoisting device at the top end of the rod position detector, and enabling the connecting holes in the base to be in one-to-one opposite communication with the screw holes in the top end of the rod position detector;
s2, respectively penetrating and locking a plurality of bolts of the hoisting device into the connecting holes and the screw holes which are communicated oppositely, and fixing the base on the top end of the rod position detector;
s3, connecting the lifting equipment with the lifting lugs on the base;
s4, the hoisting device and the rod position detector are hoisted by the hoisting equipment to be turned from a horizontal state to a vertical state, and the hoisting equipment is placed on a top cover of the pressure vessel;
s5, manually rotating a driving part on the bolt to drive the bolt to rotate and disengage from the connecting hole and the screw hole, and hanging the disengaged bolt on the lifting lug through a connecting rope;
and S6, the hoisting device is hoisted by the hoisting equipment to be separated from the rod position detector.
Preferably, steps S1-S6 are repeated several times to hoist all of the rod position detectors onto the top lid of the pressure vessel.
The hoisting device of the reactor control rod position detector is used for being installed at the top end of the reactor control rod position detector (RPI detector) and being matched with hoisting equipment to hoist the rod position detector to the top cover of a pressure vessel; the locking bolt is arranged through the driving part, so that the locking bolt can be assembled and disassembled without using tools such as a spanner and the like, the tightness of the locking bolt can be realized by directly manually rotating the locking bolt, the locking bolt is convenient and fast to operate, the locking bolt can be rapidly assembled and disassembled, and the efficiency is improved; the bolt is connected on hoist device through connecting the rope, has also eliminated bolt and instrument and has taken place the risk that falls in the dismouting in-process.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a schematic structural diagram of a hoisting device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of the hoisting device of the embodiment of the invention installed on a reactor control rod position detector.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
The hoisting device of the reactor control rod position detector is used for being installed at the top end of the reactor control rod position detector (RPI detector) and is matched with hoisting equipment to realize that the rod position detector is hoisted to the top cover of a pressure vessel.
As shown in fig. 1 and 2, the lifting device according to an embodiment of the present invention may include a base 10, at least two lifting eyes 20 connected to the base 10, and a plurality of bolts 30 respectively suspended on at least one lifting eye 20 by a connecting rope 40.
The base 10 is used for being sleeved on the top end of a rod position detector 100 of a reactor control rod, and is provided with a plurality of connecting holes 13. After the base 10 is sleeved to the top end of the rod position detector 100, the connection holes 13 are in opposite communication with the screw holes on the top end of the rod position detector 100. The bolt 30 is matched with the connecting hole 13 and the screw hole and is used for being locked in the connecting hole 13 and the screw hole which are communicated oppositely, so that the base 10 is fixed on the top end of the rod position detector 100, and the whole hoisting device is fixed on the rod position detector 100.
In particular, the head of each bolt 30 is provided with a driving portion 31 for holding by hand to rotate the bolt 30, so that the bolt 30 can be rotated without a wrench or other tools to assemble and disassemble the bolt 30.
The lifting lugs 20 are preferably located on at least opposite sides of the base 10 for connection to a lifting apparatus so that the lifting apparatus and the rod position detector 100 on which it is located can be lifted or lowered. The connection string 40 is connected between the driving portion 31 of the bolt 30 and the shackle 20. When the bolt 30 is in a free state or is released from the connecting hole 13 and the screw hole, the bolt is still connected with the lifting lug 20 through the connecting rope 40 and cannot fall off the whole hoisting device.
Specifically, the base 10 may further include a bottom plate 11, and a central hole 12 disposed on the bottom plate 11 and penetrating opposite surfaces thereof. The central hole 11 of the bottom plate 11 is arranged to form a ring structure, and the base 10 is sleeved on the top end of the rod position detector 100 through the central hole 12. The central hole 12 is disposed corresponding to the top end of the rod position detector 100, and the inner diameter thereof is larger than or equal to the outer diameter of the top end thereof.
The rod position detector 100 is a cylindrical structure, and the bottom plate 11 may be a circular plate. Because the top cover installation space of the pressure container is narrow and small, the interval between the rod position detectors 100 is small, in order to avoid the interference between the bottom plate 11 and the adjacent rod position detectors 100, the bottom plate 11 can be arranged on the basis of a circular plate, two opposite sides are set to be straight edges, two wide edges are formed to be arc-shaped rectangular plates, and the size of the bottom plate 11 is reduced.
A plurality of attachment holes 13 are provided in the base plate 11 and are spaced around the central hole 12.
In this embodiment, two lifting lugs 20 are provided, and may be vertically connected to the bottom plate 11 by welding or the like, and are located on two opposite sides of the central hole 12.
Each lifting lug 20 may include a vertical plate 21 vertically connected to the base 10, and a lifting hole 22 provided at an upper end of the vertical plate 21. When the hoisting equipment is connected with the hoisting device, the hoisting equipment is fastened with the hoisting hole 22 through the shackle at the end part of the hoisting belt.
In addition, the hanging hole 22 is also used for connecting the threading of the rope 40. One end of the connecting string 40 is connected to the driving portion 31 of the bolt 30, and the other end is connected to the vertical plate 21 through the hanging hole 22. The bolt 30 is hung on the lifting lug 20 through the connecting rope 40, and the bolt 30 can freely rotate relative to the lifting lug 20, can be locked in a hole and the like, and is not influenced by the hanging limitation.
Alternatively, in the embodiment shown in fig. 1, the driving part 31 is a ring body vertically attached to the head of the bolt 30. The setting of this ring body not only conveniently connects 40 cross-under of rope, still makes things convenient for the staff to hold behind this ring body through rotating the ring body and then rotate bolt 30, need not with the help of instruments such as spanner.
Of course, the driving portion 31 is not limited to the ring body, as long as it can drive the rotation of the bolt 30 and conveniently pass through the connecting rope 40. For example, the driving portion 31 may be a plate vertically connected to the head of the bolt 30, and a through hole is formed in the plate for the connection cord 40 to pass through. The plate can be a circular plate, an elliptical plate, a polygonal plate, a saddle-shaped plate, a drop-shaped plate and other special-shaped plates.
Further, preferably, the hoisting device comprises four bolts 30; the four bolts 30 are respectively hung on the two lifting eyes 20 through the connecting ropes 40. Four connecting holes 13 are uniformly distributed at intervals on the base 10, the four connecting holes 13 are respectively and oppositely communicated with four evenly distributed screw holes on the top end of the rod position detector 100, and the balance hoisting of the rod position detector 100 is realized after the connecting holes 13 and the screw holes which are oppositely communicated are locked through bolts 30.
The connection cord 40 is preferably a flexible cord such as hemp, nylon, or cotton, and can be deformed in various ways such as bending.
With reference to fig. 1 and 2, when the hoisting device of the invention is applied to hoisting a reactor control rod position detector, the hoisting device can comprise the following steps:
and S1, mounting the hoisting device on the rod position detector 100 under the condition that the rod position detector 100 is horizontally placed.
The installation operation is as follows: the base 10 of the hoisting device is sleeved on the top end of the rod position detector 100, and the connecting holes 13 on the base 10 are communicated with the screw holes on the top end of the rod position detector 100 in a one-to-one opposite mode.
And S2, respectively penetrating and locking a plurality of bolts 30 of the hoisting device into the connecting holes 12 and the screw holes which are communicated oppositely, and fixing the base 10 on the top end of the rod position detector 100.
When the bolt 30 is locked, a worker can directly rotate the driving part 31 on the bolt 30 without using tools such as a wrench, and the whole bolt 30 can be driven to rotate.
And S3, connecting the hoisting equipment with the lifting lugs 20 on the base 10.
When the lifting device is connected, the shackle at the end of the lifting belt of the lifting device is buckled with the lifting hole 22 of the lifting lug 20.
And S4, hoisting the hoisting device and the rod position detector 100 by hoisting equipment, so that the rod position detector 100 is turned to a vertical state from a horizontal state and falls on the top cover of the pressure vessel.
S5, after the rod position detector 100 is located, a worker directly and manually rotates the driving portion 31 of the bolt 30 of the lifting device on a high platform (usually 20 m high platform) corresponding to the top of the rod position detector 100 to drive the bolt 30 to rotate and disengage from the connecting hole 13 and the screw hole, and the disengaged bolt 30 is hung and connected on the lifting lug 20 through the connecting rope 40.
And S6, hoisting the hoisting device by hoisting equipment to separate the hoisting device from the rod position detector 100.
The steps S1-S6 are repeated several times to hoist all the rod position detectors 100 to the top lid of the pressure vessel.
According to the hoisting method, the rod position detector 100 is hoisted to the top cover of the pressure vessel through the hoisting device, tools such as a spanner are not needed for dismounting the hoisting device, a worker directly rotates the bolt 30 manually, the operation is convenient and fast, and the efficiency is improved; the bolt 30 is connected with the lifting lug 20 through the connecting rope 40, so that the risk that the bolt 30 falls off in the dismounting process is eliminated.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The hoisting device for the reactor control rod position detector is characterized by comprising a base, at least two lifting lugs and a plurality of bolts, wherein the base is used for being sleeved at the top end of the reactor control rod position detector, the at least two lifting lugs are connected to the base and are used for being connected with hoisting equipment, and the bolts are respectively hung on the at least one lifting lug through connecting ropes;
the base is provided with a plurality of connecting holes which are oppositely communicated with screw holes on the top end of the rod position detector, the head of each bolt is provided with a driving part which is used for holding the bolt to rotate, and the connecting rope is connected between the driving part and the lifting lug; the bolt is locked in the connecting hole and the screw hole which are communicated oppositely through rotation, and the base is fixed on the top end of the rod position detector.
2. The lift system for a reactor control rod position detector as recited in claim 1, wherein the base comprises a bottom plate, a central hole disposed in the bottom plate and extending through opposite surfaces thereof; the base is sleeved at the top end of the rod position detector through the central hole;
the connecting holes are arranged on the bottom plate and distributed at intervals around the central hole.
3. The hoisting device of the reactor control rod position detector as recited in claim 2, wherein the bottom plate is a rectangular plate with two wide sides in an arc shape.
4. The hoisting device of the reactor control rod position detector as recited in claim 1, wherein the lifting lug comprises a riser vertically connected to the base, and a lifting hole disposed at an upper end of the riser;
one end of the connecting rope is connected to the driving part of the bolt, and the other end of the connecting rope penetrates through the lifting hole to be connected to the vertical plate.
5. The hoisting device of the reactor control rod position detector as recited in claim 1, wherein the driving part is a ring body vertically connected to a head of the bolt.
6. The hoisting device of the reactor control rod position detector as recited in claim 1, wherein the driving part is a plate vertically connected to the head of the bolt, and the plate is provided with a through hole for the connection rope to pass through.
7. The hoisting device of reactor control rod position detector as recited in claim 6, wherein the plate is a circular plate, an elliptical plate or a polygonal plate.
8. The hoisting device of the reactor control rod position detector as recited in any one of claims 1 to 7, wherein the hoisting device of the reactor control rod position detector comprises four bolts; the four bolts are respectively connected to the two lifting lugs in a hanging mode through the connecting ropes.
9. A method for hoisting a reactor control rod position detector, which is characterized in that the hoisting device of the reactor control rod position detector as claimed in any one of claims 1 to 8 is adopted; the hoisting method comprises the following steps:
s1, under the condition that the reactor control rod position detector is horizontally placed, sleeving the base of the hoisting device at the top end of the rod position detector, and enabling the connecting holes in the base to be in one-to-one opposite communication with the screw holes in the top end of the rod position detector;
s2, respectively penetrating and locking a plurality of bolts of the hoisting device into the connecting holes and the screw holes which are communicated oppositely, and fixing the base on the top end of the rod position detector;
s3, connecting the lifting equipment with the lifting lugs on the base;
s4, the hoisting device and the rod position detector are hoisted by the hoisting equipment to be turned from a horizontal state to a vertical state, and the hoisting equipment is placed on a top cover of the pressure vessel;
s5, manually rotating a driving part on the bolt to drive the bolt to rotate and disengage from the connecting hole and the screw hole, and hanging the disengaged bolt on the lifting lug through a connecting rope;
and S6, the hoisting device is hoisted by the hoisting equipment to be separated from the rod position detector.
10. The method for hoisting the reactor control rod position detectors as recited in claim 9, wherein the steps S1-S6 are repeated several times to hoist all the rod position detectors to the top cover of the pressure vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111155235.4A CN113830655A (en) | 2021-09-29 | 2021-09-29 | Hoisting device and hoisting method for reactor control rod position detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111155235.4A CN113830655A (en) | 2021-09-29 | 2021-09-29 | Hoisting device and hoisting method for reactor control rod position detector |
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| Publication Number | Publication Date |
|---|---|
| CN113830655A true CN113830655A (en) | 2021-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111155235.4A Pending CN113830655A (en) | 2021-09-29 | 2021-09-29 | Hoisting device and hoisting method for reactor control rod position detector |
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| CN (1) | CN113830655A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005024091A (en) * | 2003-06-12 | 2005-01-27 | Taiyo Seiki Kogyo Kk | Shackle |
| KR20140141900A (en) * | 2013-06-03 | 2014-12-11 | 대우조선해양 주식회사 | Releasing tool for eye bolt and method for releasing using the same |
| CN204714310U (en) * | 2015-06-25 | 2015-10-21 | 山西阳煤化工机械（集团）有限公司 | Main equipment lifting auxiliary mould |
| CN208308241U (en) * | 2018-05-21 | 2019-01-01 | 中国能源建设集团湖南火电建设有限公司 | Power station indirect air cooling tower cooler triangle tool special for hoisting and Special lifting device |
| CN208916591U (en) * | 2018-09-30 | 2019-05-31 | 中交二公局第二工程有限公司 | A kind of steel truss girder assembled steel lifting lug device |
| CN210528234U (en) * | 2019-08-28 | 2020-05-15 | 山东电力工程咨询院有限公司 | Device for hoisting tower of wind generating set |
| CN211769817U (en) * | 2020-01-19 | 2020-10-27 | 中国化学工程第十一建设有限公司 | Lifting appliance for chemical tower sections |
-
2021
- 2021-09-29 CN CN202111155235.4A patent/CN113830655A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005024091A (en) * | 2003-06-12 | 2005-01-27 | Taiyo Seiki Kogyo Kk | Shackle |
| KR20140141900A (en) * | 2013-06-03 | 2014-12-11 | 대우조선해양 주식회사 | Releasing tool for eye bolt and method for releasing using the same |
| CN204714310U (en) * | 2015-06-25 | 2015-10-21 | 山西阳煤化工机械（集团）有限公司 | Main equipment lifting auxiliary mould |
| CN208308241U (en) * | 2018-05-21 | 2019-01-01 | 中国能源建设集团湖南火电建设有限公司 | Power station indirect air cooling tower cooler triangle tool special for hoisting and Special lifting device |
| CN208916591U (en) * | 2018-09-30 | 2019-05-31 | 中交二公局第二工程有限公司 | A kind of steel truss girder assembled steel lifting lug device |
| CN210528234U (en) * | 2019-08-28 | 2020-05-15 | 山东电力工程咨询院有限公司 | Device for hoisting tower of wind generating set |
| CN211769817U (en) * | 2020-01-19 | 2020-10-27 | 中国化学工程第十一建设有限公司 | Lifting appliance for chemical tower sections |
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