CN207009095U - A kind of biological shielding device that can be remotely dismounted under high radioactivity environment - Google Patents
A kind of biological shielding device that can be remotely dismounted under high radioactivity environment Download PDFInfo
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- CN207009095U CN207009095U CN201720738484.9U CN201720738484U CN207009095U CN 207009095 U CN207009095 U CN 207009095U CN 201720738484 U CN201720738484 U CN 201720738484U CN 207009095 U CN207009095 U CN 207009095U
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- closure plate
- biological shielding
- round platform
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Abstract
The utility model belongs to nuclear power station Coolant Pump maintenance domain technology field, and in particular to the biological shielding device that can be remotely dismounted under a kind of high radioactivity environment.Including：Biological shielding closure plate and closure plate support, biological shielding closure plate is supported in above closure plate support, the closure plate support is to be remotely controlled from elevator closure plate support, there are position and the posture of the closure plate support of biological shielding closure plate by remote control upper support, realize the dress group of biological shielding closure plate and nuclear reactor main pump pump case and separate.The utility model passes through biological shielding closure plate, effective radioactive shield can be realized to main pump pump case bottom opening, can remotely, be rapidly completed the installation and dismounting of biological shielding closure plate, effectively reduce operating personnel's radioactive dosage, overhaul efficiency is increased substantially, is also the subsequently cutting to pump case residual C-shaped ring and the installation of fix tool, implements to lay the foundation.
Description
Technical field
The utility model belongs to nuclear power station Coolant Pump maintenance domain technology field, and in particular to a kind of high radioactivity ring
The biological shielding device that can be remotely dismounted under border.
Background technology
Nuclear power station is after the long period is run, possibility that the miscellaneous part such as main pump thrust bearing and housing goes wrong
Property can be stepped up, therefore under radioactive environment to main pump change and maintenance craft and instrument exploitation it is just very necessary.
By taking AP1000 main pumps as an example, AP1000 main pumps are hung upside down in evaporator bottom using Coolant Pump, whole main pump
Portion, after the main pump of damage is removed, pump case bottom opening, environmental dose is very high, has a strong impact on and subsequently remains c-type to pump case end face
Ring, the reparation of weld seam and inspection work, it is therefore necessary to effectively blocked to opening.
By the comprehensive analysis to field working conditions, pump shell structure and dismounting process, the factor of closure is restricted in the prior art
It is main as follows：(1) weight is larger, and (effective shielding selection to reach to evaporator high dose should consider screen to about 2T or so
Cover effect and weight)；(2) drop is larger, and pump case is apart from ground about 6m；(3) radial positioning precision is higher；(4) require to be easy to pair
The subsequent operation such as the cutting of remaining C-shaped ring and the reparation of pump case end face；(5) radioactive environment dosage is high.Therefore a kind of energy is needed badly
It is enough quickly under high radioactivity environment remote control biological shielding device and its installation tool, by axial direction, radial direction
Precise positioning, the long-range quick despatch of biological shielding device is realized, while remain the cutting of C-shaped ring for follow-up pump case and repair work
The installation of tool, implement to lay the foundation.
Utility model content
The utility model technical issues that need to address are：Being there is provided for nuclear reactor main pump can under a kind of high radioactivity environment
The biological shielding device remotely dismounted.
The technical solution of the utility model is as described below：
The biological shielding device that can be remotely dismounted under a kind of high radioactivity environment, including biological shielding closure plate and closure plate branch
Frame, biological shielding closure plate are supported in above closure plate support, it is characterised in that：The closure plate support is to be remotely controlled from elevator closure plate branch
Frame, there are position and the posture of the closure plate support of biological shielding closure plate by remote control upper support, realize biological shielding closure plate
With the dress group of nuclear reactor main pump pump case and separate.
The biological shielding closure plate is integrally stepped round table-like, i.e., biological shielding closure plate is made up of two round platforms, roundlet
Platform is located above big round platform, and two round platforms are stacked with one heart；The center of circle of the center of biological shielding closure plate, i.e., small round platform and big round platform
Place, provided with mandrel.
At the ladder that the small round platform of the biological shielding closure plate and big round platform are formed, O-ring is placed.
Fixed support plate is set in the side wall of the big round platform of biological shielding closure plate, and fixed support plate is provided with fixed support
Crab bolt hole.
The quantity of the fixed support plate is two or more.
The fixed support plate is uniformly distributed along the big round platform side wall circumferencial direction of biological shielding closure plate.
The connected mode of the fixed support plate and the big round platform of biological shielding closure plate is as described below：It is big in biological shielding closure plate
Round platform radially digs several grooves, a fixed support plate part insert it is in big round platform groove and fixed, fixed support plate remaining
Outside big round platform side wall, fixed support plate bolt hole is arranged on the part that fixed support plate is located at outside big round platform side wall for part
On.
The fixed support plate inserts the part of big round platform groove, is mutually fixed by alignment pin and big round platform.
The top of the closure plate support is designed in truncated cone-shaped, and the round platform center of closure plate support is provided with and biological shielding closure plate
The through hole that mandrel size matches, for passing through mandrel.
The round platform side wall of the closure plate support is radially even to be provided with several platy structures protruded, is set on platy structure
There is guide-localization elevator bolt hole, the quantity of the platy structure of the closure plate support is two or more, the guide-localization lifting
The steel wire rope of windlass hoisting structure being connected with guide-localization elevator bolt is provided with below bolt hole.
The beneficial effects of the utility model are：
(1) the biological shielding device that can be remotely dismounted under a kind of high radioactivity environment of the present utility model, shielded by biology
Closure plate is covered, effective radioactive shield can be realized to main pump pump case bottom opening；
(2) the biological shielding device that can be remotely dismounted under a kind of high radioactivity environment of the present utility model, by remote control certainly
Elevator closure plate support, remote control can be implemented to the position of biological shielding closure plate, can remotely, be rapidly completed biological shielding closure plate
Installation and dismounting, effectively reduce operating personnel's radioactive dosage, increase substantially overhaul efficiency；
(3) the biological shielding device that can be remotely dismounted under a kind of high radioactivity environment of the present utility model, utilizes pump case footpath
To the machining accuracy with axial direction, by being remotely controlled from elevator closure plate support, precise positioning is realized to biological shielding closure plate；
(4) the biological shielding device that can be remotely dismounted under a kind of high radioactivity environment of the present utility model, can be follow-up
The installation of cutting and fix tool to pump case residual C-shaped ring, implement to lay the foundation.
Brief description of the drawings
Fig. 1 is the assembling signal that the biological shielding closure plate of biological shielding device of the present utility model is arranged on below pump case
Figure；
Fig. 2 is the remote control of biological shielding device of the present utility model from elevator closure plate supporting structure schematic diagram；
Fig. 3 is the biological shielding closure plate of biological shielding device of the present utility model and is remotely controlled the assembling from elevator closure plate support
Schematic diagram；
Fig. 4 is the assembling schematic diagram that biological shielding device of the present utility model is arranged on below pump case.
In figure, 1- fixing bolts；2- fixed support plates；3- biological shielding closure plates；4- mandrels；5- alignment pins；6-O shapes
Circle；7-C V-shaped rings；8- closure plate supports；9- guide-localization elevator bolts；10- guide-localization elevator bolts hole；11- pump case spiral shells
Keyhole；12- pump cases.
Embodiment
Biology to can remotely be dismounted under a kind of high radioactivity environment of the present utility model with reference to the accompanying drawings and examples
Screening arrangement is described in detail.
As shown in figure 3, the biological shielding device that can be remotely dismounted under a kind of high radioactivity environment in the present embodiment, including
Biological shielding closure plate 3 and closure plate support 8, biological shielding closure plate 3 are supported in the top of closure plate support 8；The closure plate support 8 is remote control
From elevator closure plate support, there are position and the posture of the closure plate support 8 of biological shielding closure plate 3 by remote control upper support, it is real
Show the dress group of biological shielding closure plate 3 and nuclear reactor main pump pump case 12 and separate.
As shown in figures 1 and 3, the entirety of biological shielding closure plate 3 is stepped round table-like, and its sectional view is " convex " word
Shape, i.e. biological shielding closure plate 3 are made up of two round platforms, and small round platform is located above big round platform, and two round platforms are stacked with one heart.Biology screen
The circle centre position at the center of closure plate 3, i.e., small round platform and big round platform is covered, provided with mandrel 4, the C on follow-up precisely installation cutting pump case
The instrument of V-shaped ring 7.At the ladder that small round platform and big round platform are formed, O-ring 6 can be placed, for dress group biological shielding
When closure plate 3 and nuclear reactor main pump pump case 12, the sealing between biological shielding closure plate 3 and pump case 12.
As shown in figures 1 and 3, fixed support plate 2, fixed support are set in the side wall of 3 big round platform of biological shielding closure plate
Plate 2 is provided with fixed support plate bolt hole.The quantity of the fixed support plate 2 can be 2,3 or more, layout type
It is preferred that several fixed support plates 2 are uniformly distributed along the big round platform side wall circumferencial direction of biological shielding closure plate 3.The fixed support plate
2 is as described below with the connected mode of 3 big round platform of biological shielding closure plate：Several are radially dug in 3 big round platform of biological shielding closure plate
Groove, the part of fixed support plate 2 is inserted in big round platform groove, and is fixed by technological means such as alignment pins 5, fixed support
The remainder of plate 2 is located at outside big round platform side wall, and fixed support plate bolt hole is arranged on fixed support plate 2 and is located at outside big round platform side wall
Part on.
As shown in Fig. 2 the closure plate support 8 can be remotely controlled for remote control from elevator closure plate support, position and posture.
The top of closure plate support 8 is designed in truncated cone-shaped, and round platform center is provided with to be led to what the size of mandrel 4 of biological shielding closure plate 3 matched
Hole, for passing through mandrel 4；Round platform side wall is radially provided with the platy structure of several protrusions, and platy structure, which is provided with, to be oriented to
Position elevator bolt hole 10.The quantity of the platy structure can be 2,3 or more, layout type preferably several plates
Round platform side wall circumferencial direction of the shape structure along closure plate frame upper is uniformly distributed.The lower section of guide-localization elevator bolt hole 10 is set
The steel wire rope of windlass hoisting structure being connected with guide-localization elevator bolt 9 is equipped with, closure plate support is remotely controlled for lifting.
As shown in figure 4, given birth to using the biological shielding device dress group that can be remotely dismounted under the high radioactivity environment of the present embodiment
When thing shields closure plate 3 and nuclear reactor main pump pump case 12, operation is as follows：Biological shielding closure plate 3 is supported on closure plate support 8
Side, the two is bolted；Before main pump does not remove and main pump disassembling bolts to it is only surplus four when, be directed to positioning lifting spiral shell
The priority of bolt 9 passes through guide-localization elevator bolt hole 10 and the pump case bolt hole 11 of closure plate support 8, realizes the guiding of closure plate support 8
Positioning；After removing main pump, the position of Remote closure plate support 8 and posture, make which support biological shielding closure plate 3 to be moved to pump
The lower section of shell 12, makes the small round platform of biological shielding closure plate 3 block the bottom opening of pump case 12；The priority of fixing bolt 1 is shielded through biology
Cover the fixed support plate bolt hole and pump case bolt hole 11 of closure plate 3；Remove for fixing biological shielding closure plate 3 and closure plate support 8
Bolt, put down closure plate support 8, and remove the guide-localization elevator bolt 9 between closure plate support 8 and pump case 12, complete biology
Shield the assembling of closure plate 3 and pump case 12.
Biological shielding closure plate 3 is separated using the biological shielding device that can be remotely dismounted under the high radioactivity environment of the present embodiment
During with nuclear reactor main pump pump case 12, operation is as follows：Before main pump installation, it is directed to the positioning priority of elevator bolt 9 and passes through closure plate
The guide-localization elevator bolt hole 10 of support 8 and pump case bolt hole 11；By closure plate support 8 sling to the phase of biological shielding closure plate 3
Contact, is fixed biological shielding closure plate 3 and the phase of closure plate support 8 with bolt；Remove for fixing biological shielding closure plate 8 and pump case 12
Fixing bolt, Remote closure plate support 8 supports biological shielding closure plate 3 and slowly falls and remove.
Claims (10)
1. the biological shielding device that can be remotely dismounted under a kind of high radioactivity environment, including biological shielding closure plate (3) and closure plate branch
Frame (8), biological shielding closure plate (3) are supported in above closure plate support (8), it is characterised in that：The closure plate support (8) is to be remotely controlled certainly
Elevator closure plate support, there are position and the posture of the closure plate support (8) of biological shielding closure plate (3) by remote control upper support,
Realize the dress group of biological shielding closure plate (3) and nuclear reactor main pump pump case (12) and separate.
2. the biological shielding device that can be remotely dismounted under a kind of high radioactivity environment according to claim 1, its feature exist
In：The biological shielding closure plate (3) is integrally stepped round table-like, i.e., biological shielding closure plate (3) is made up of two round platforms, roundlet
Platform is located above big round platform, and two round platforms are stacked with one heart；The circle of the center of biological shielding closure plate (3), i.e., small round platform and big round platform
At the heart, provided with mandrel (4).
3. the biological shielding device that can be remotely dismounted under a kind of high radioactivity environment according to claim 2, its feature exist
In：At the ladder that the small round platform of the biological shielding closure plate (3) and big round platform are formed, O-ring (6) is placed.
4. the biological shielding device that can be remotely dismounted under a kind of high radioactivity environment according to claim 2, its feature exist
In：Fixed support plate (2) is set in the side wall of the big round platform of the biological shielding closure plate (3), and fixed support plate (2) is provided with solid
Determine supporting plate bolt hole.
5. the biological shielding device that can be remotely dismounted under a kind of high radioactivity environment according to claim 4, its feature exist
In：The quantity of the fixed support plate (2) is two or more.
6. the biological shielding device that can be remotely dismounted under a kind of high radioactivity environment according to claim 5, its feature exist
In：The fixed support plate (2) is uniformly distributed along the big round platform side wall circumferencial direction of biological shielding closure plate (3).
7. the biological shielding device that can be remotely dismounted under a kind of high radioactivity environment according to claim 4 or 5 or 6, its
It is characterised by：The fixed support plate (2) and the connected mode of the big round platform of biological shielding closure plate (3) are as described below：Shield in biology
To cover the big round platform of closure plate (3) and radially dig several grooves, fixed support plate (2) part is inserted in big round platform groove and fixed,
Fixed support plate (2) remainder is located at outside big round platform side wall, and fixed support plate bolt hole is arranged on fixed support plate (2) and is located at
On part outside big round platform side wall.
8. the biological shielding device that can be remotely dismounted under a kind of high radioactivity environment according to claim 7, its feature exist
In：The fixed support plate (2) inserts the part of big round platform groove, is mutually fixed with big round platform by alignment pin (5).
9. the biological shielding device that can be remotely dismounted under a kind of high radioactivity environment according to claim 2, its feature exist
In：The top of the closure plate support (8) is designed in truncated cone-shaped, and the round platform center of closure plate support (8) is provided with and biological shielding closure plate
(3) through hole that mandrel (4) size matches, for passing through mandrel (4).
10. the biological shielding device that can be remotely dismounted under a kind of high radioactivity environment according to claim 9, its feature exist
In：The radially even platy structure provided with several protrusions of round platform side wall of the closure plate support (8), platy structure are provided with
Guide-localization elevator bolt hole (10), the quantity of the platy structure of the closure plate support (8) are two or more, the guide-localization
The steel wire rope of windlass hoisting structure being connected with guide-localization elevator bolt (9) is provided with below elevator bolt hole (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720738484.9U CN207009095U (en) | 2017-06-23 | 2017-06-23 | A kind of biological shielding device that can be remotely dismounted under high radioactivity environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720738484.9U CN207009095U (en) | 2017-06-23 | 2017-06-23 | A kind of biological shielding device that can be remotely dismounted under high radioactivity environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207009095U true CN207009095U (en) | 2018-02-13 |
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ID=61448172
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720738484.9U Active CN207009095U (en) | 2017-06-23 | 2017-06-23 | A kind of biological shielding device that can be remotely dismounted under high radioactivity environment |
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| CN (1) | CN207009095U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111649006A (en) * | 2020-06-09 | 2020-09-11 | 三门核电有限公司 | Large-scale shielding main pump integral reloading device and reloading process in radioactive environment |
-
2017
- 2017-06-23 CN CN201720738484.9U patent/CN207009095U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111649006A (en) * | 2020-06-09 | 2020-09-11 | 三门核电有限公司 | Large-scale shielding main pump integral reloading device and reloading process in radioactive environment |
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