CN109854527A - A kind of shielding main pump locking shielding tool - Google Patents
A kind of shielding main pump locking shielding tool Download PDFInfo
- Publication number
- CN109854527A CN109854527A CN201910088665.5A CN201910088665A CN109854527A CN 109854527 A CN109854527 A CN 109854527A CN 201910088665 A CN201910088665 A CN 201910088665A CN 109854527 A CN109854527 A CN 109854527A
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- Prior art keywords
- shielding
- main pump
- base station
- tool
- rotor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of shielding main pump locking shielding tool, belongs to Coolant Pump maintenance technique field.Inventive article includes rotor retaining mechanism, hoisting mechanism, shielding body；The shielding body is base station with a central hole, and the base station top and surrounding are made of barricade；The hoisting mechanism is set at the top of the shielding body, for cooperating lifting device lifting shielding main pump locking shielding tool；The rotor retaining mechanism is mounted at the top of the shielding body and is mounted in the centre bore；The shielding body is installed on main pump by fastener, and in the case where the shielding body shields high radioactivity component, the rotor retaining mechanism is for locking rotor part.The present invention remotely Fast Installation can shield tool and can shield high radioactivity well after installing, and can be convenient for rotor locking operation in the case where shielding, and can effectively seal raffinate.
Description
Technical field
The invention belongs to Coolant Pump maintenance technique fields more particularly to a kind of shielding main pump to lock shielding tool.
Background technique
Main pump is shielded after the long period runs, what the other components such as main pump thrust bearing and housing went wrong can
Energy property is also stepped up, just very necessary to main pump replacement and the exploitation of maintenance craft and tool under radioactive environment.And certain core
Using Coolant Pump, entire main pump is hung upside down in base of evaporator electric main pump, after the main pump of damage is removed, impeller and heat
Shield that contour radioactive component is exposed, the processes such as installation of locking and suspender to subsequent rotor part cause to seriously affect, it is necessary to
Exposed high radioactivity component is effectively shielded.By to field working conditions, impeller and heat shielding structure, rotor part locking
And the comprehensive analysis of hoisting, the factor for finding out restriction are mainly as follows: 1, pump housing weight is larger, about 70T or so；2, radial fixed
Position precision is higher；3, it is not easy to lock rotor part after screening arrangement installation；4, radioactive dosage is very big (about mSv)；5, turn
It is more difficult to the sealing of radioactivity raffinate during fortune.Therefore needing to invent one kind being capable of long-range Fast Installation and can be compared with after installing
Good shielding high radioactivity, rotor locking and the special hanger for sealing raffinate, safely and effectively hangs for the subsequent pump housing by replacement
Out and transhipment lays the foundation.
Summary of the invention
The present invention in view of the problems of the existing technology, can be long-range to provide one kind in Coolant Pump replacement maintenance process
The shielding main pump locking shielding work of high radioactivity, rotor locking and sealing raffinate can be shielded after Fast Installation and installation well
Tool.
The technical scheme is that:
A kind of shielding main pump of the present invention locks shielding tool, including rotor retaining mechanism, hoisting mechanism, shielding body；The screen
Covering mechanism is base station with a central hole, and the base station top and surrounding are made of barricade；The hoisting mechanism is set to described
At the top of shielding body, for cooperating lifting device lifting shielding main pump locking shielding tool；The rotor retaining mechanism is mounted on
At the top of the shielding body and it is mounted in the centre bore；The shielding body is installed on main pump by fastener, in institute
It states under shielding body shielding high radioactivity component, the rotor retaining mechanism is for locking rotor part.
Preferably, the rotor retaining mechanism includes rotor locking plate, rotor locking bolt components；The rotor locking
Disk is mounted in the centre bore of the shielding body, and the rotor locking bolt components are inserted into the rotor locking plate, is used for
Shielding body is mounted on main pump back spin and enters main pump impeller.
Preferably, the hoisting mechanism includes hanger and lifting lug；The hanger is installed at the top of base station, and with base station it
Between spaced distance；The lifting lug is installed on two heel post of base station.
Preferably, the shielding body is the base station that a side is equipped with column；Base station top circumference is equipped with upper screen
Shield plate, the base station lower circumference are equipped with lower barricade；Spaced distance between the upper barricade and the lower barricade.
Preferably, the barricade is made of double layer hollow stainless steel plate, the hollow space of the barricade fills lead.
Preferably, the base station centre bore is equipped with sealing ring close to the inner periphery of main pump.
Preferably, the base station centre bore has gradient close to the inner periphery of main pump, for being oriented to shielding body installation
On main pump.
Preferably, inventive article further includes positioning guide column, positioning and guiding end cap；The lower barricade axially opens up
There is guide through hole；The positioning guide column and the positioning and guiding end cap offer assembly through-hole；The positioning guide column holds
It is placed in the guide through hole and stretches out guide through hole, with radial positioning shielding main pump locking shielding tool in the installation on main pump
Position；The positioning and guiding end cap is set to the end for above the positioning guide column and being located at the guide through hole, the fastening
Part sequentially passes through the positioning and guiding end cap, shielding body is installed on main pump by the positioning guide column.
It is stretched preferably, the internal diameter that the positioning guide column protrudes into the guide through hole part is less than the positioning guide column
Become owner of the internal diameter of syringe pump method orchid bolt hole part.
Preferably, the lower part of the positioning and guiding end cap is equipped with skewed slot.
The invention has the following advantages:
A kind of shielding main pump of the present invention locks shielding tool, can preferably shield high radiation after the long-range Fast Installation of energy and installation
Property, the installation and removal of shielding tool can be rapidly completed, rotor part can be locked after the installation of shielding tool, and can have
Effect sealing raffinate.Inventive article effectively reduces operating personnel's radioactive dosage, increases substantially overhaul efficiency, while after being
It is continuous to lay the foundation to pump case overturning and transport.
Detailed description of the invention
Fig. 1 is the schematic perspective view that a kind of shielding main pump of the present invention locks shielding tool；
Fig. 2 is the hanger structure schematic diagram of hoisting mechanism in Fig. 1；
Fig. 3 is the shackle structure schematic diagram of hoisting mechanism in Fig. 1；
Fig. 4 is that the rotor of rotor retaining mechanism in Fig. 1 locks dish structure schematic diagram；
Fig. 5 is the assembling schematic diagram that rotor locking plate assembles rotor locking bolt components in Fig. 4；
Fig. 6 is the schematic perspective view of shielding body in Fig. 1；
Fig. 7 is Fig. 6 shielding body bottom enlarged diagram；
Fig. 8 is the sealed structural schematic diagram that a kind of shielding main pump of the present invention locks shielding tool；
Fig. 9 is that a kind of shielding main pump of the present invention locks positioning guide column, positioning and guiding end cap when shielding tool is installed on main pump
Structural schematic diagram；
Figure 10 is that a kind of shielding main pump of the present invention locks the structural schematic diagram after shielding tool and main pump assembly.
Specific embodiment
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
A kind of shielding main pump locking shielding tool includes the tight mechanism of rotor lock, hoisting mechanism, shielding body.The shield machine
Structure is base station with a central hole, and the base station top and surrounding are made of barricade.The hoisting mechanism is set to the shielding
At the top of mechanism, for cooperating lifting device, such as crane, lifting shielding main pump locks shielding tool to proper operation position.It is described
Rotor retaining mechanism is mounted at the top of the shielding body and is mounted in the centre bore.The shielding body passes through fastener
It is installed on main pump, in the case where the shielding body shields high radioactivity component, the rotor retaining mechanism is for locking rotor portions
Part.The present invention shields tool on main pump convenient for Remote Installation by the way that hoisting mechanism is arranged outside shielding body；And it is shielding
Rotor retaining mechanism is set on tool, can be moved with shielding body in the case where hoisting mechanism lifting is mobile, once shielding body is pacified
When loaded on main pump, the radioactivity of the water conservancy component locations of entire main pump shields substantially, and operating personnel can closely lean on early work
Industry locks rotor part using rotor retaining mechanism.
Such as Fig. 1,4,5, the rotor retaining mechanism includes rotor locking plate 1, rotor locking bolt components 2.The rotor
Locking plate 1 is mounted in the centre bore 13 of the shielding body, and the rotor locking bolt components 2 are inserted into the rotor locking plate
In 1, main pump back spin is mounted on for shielding body and enters main pump impeller.Bolt hole 12 is offered on the rotor locking plate 1, it is described
Rotor locking bolt components are several fasteners being made of bolt and screw, and the rotor bolt component is inserted into the rotor lock
In the bolt hole of tight disk 1.
Such as Fig. 1,6, the shielding body is the base station 5 that a side is equipped with column 6.Preferably, the side pair of the base station 5
Claiming distribution, there are four columns 6.The top of the base station 5 is equipped with top shield plate 53, and the 5 top circumference of base station is equipped with upper shielding
Plate 51,5 lower circumference of base station are equipped with lower barricade 52.Above-mentioned barricade is all made of double layer hollow stainless steel plate and is made,
The hollow space of barricade fills lead, can effectively shield the radiological dose of water conservancy component.It, can be according to difference in design installation process
Material radiation shield performance and specific gravity select the material optimized.Wherein, the upper barricade 51 and the lower barricade 52 it
Between spaced distance, can be installed on main pump by fastener convenient for the shielding body in this way.It is further easily installed tight
Firmware, the upper barricade 51 are set as tabular, are divided into muti-piece and are arranged around base station top circumference, the lower barricade 52 is set
It is set to arc-shaped, is divided into muti-piece and is arranged around base station lower circumference.Barricade 51 upper in this way will not stop fastener to assemble.
Such as Fig. 1,2,3, the hoisting mechanism includes hanger 3 and lifting lug 4.The hanger 3 is installed at the top of base station 5, and with
Spaced distance between base station 5 such as controls rotor locking bolt components and screws in back-out main pump leaf in order to operating personnel's operation
Wheel, the lifting lug 4 are installed on 5 liang of heel posts 6 of the base station.Specifically, the hanger 3 includes mounting portion and main part 32.
The main part 32 is set to 1 top of rotor locking plate, and the spaced distance between the rotor locking plate.The master
Body portion 32 is installed on 5 top of base station by the mounting portion.Preferably, the mounting portion and the base station are fixed by 4 points
Position formula installation connection.In figure as it can be seen that the main part 32 of the hanger be it is cross, the installation section be four installation branches,
Extend outwardly respectively from the cross bifurcation of the main part.There are two first symmetrical installation branches in the installation branch
311, two second symmetrical installation branches 312.Four installations branch is respectively arranged in the four of the base station side
A column 6.First installation branch 311 has mounting hole, is fixed on column 6 by screw.Second installation branch
312 open up U-shaped opening, so that second installation branch 312 has two branch portions, the two branch portions card insertion enters the column
Fluting 61 on 6, two branch portion side are respectively equipped with mounting hole, pass through mounting hole for second installation point by bolt
Portion is fixedly connected with column.The lifting lug 4 includes department of assembly, hanging ring portion 42, and the department of assembly includes end and column, described
Lifting lug is fixed on column by lifting lug by protruding into its column in the through-hole 62 of column, and by bolt.Wherein, the column
412 internal diameter of shape body is less than the end 411, and 411 internal diameter of end is greater than the radial dimension of 6 through-hole of column.It is described to hang
Ring portion 42 is fixed on the end of the department of assembly, is easy to lift tool lifting.
It is installed on main pump for that can be accurately positioned convenient for present invention shielding main pump locking shielding tool, 5 center of base station
Hole has gradient close to the inner periphery of main pump, is mounted on main pump for being oriented to shielding body.That is, the inner periphery
Radial dimension gradually becomes smaller at main pump, and similar tapered structure is installed on main pump convenient for guiding.In addition, described turn
Sub- locking plate 1 is equipped with disk seam allowance 11(referring to Fig. 5), and 5 bottom of base station of the shielding body also is provided with base station seam allowance 51(referring to figure
7), the disk seam allowance 11 is matched with the base station seam allowance 51, forms concaveconvex structure, fixed convenient for shielding main pump locking shielding tool
Position is installed on main pump.
In order to further increase positioning accuracy, the present invention shields main pump locking shielding tool and further includes positioning guide column 7, determines
Position guiding end cap 8.The lower barricade 52 is axial to offer guide through hole 521, and quantity, the position foundation of the guide through hole are main
The pilot hole of pump flange face is adapted, for example, respectively offering guide through hole, and four on the lower barricade 52 of column two sides in figure
Eight guide through hole are set under a column.The positioning guide column 7 and the positioning and guiding end cap 8 offer assembly through-hole
71,81.The positioning guide column 7 is placed in the guide through hole 521 and stretches out guide through hole 521, is shielded with radial positioning
Main pump locks shielding tool in the installation site on main pump.The positioning and guiding end cap 8 be set to 7 top of the positioning guide column and
Positioned at the end of the guide through hole 521, the fastener, such as super bolt or long spiro nail sequentially pass through the positioning and guiding
Shielding body is installed on main pump 10 by end cap 8, the positioning guide column 7.Wherein, the positioning and guiding end cap 8 includes nut cap
With the cylinder for being set to nut cap bottom.The internal diameter of the nut cap be greater than the guide through hole 521 internal diameter, the internal diameter of the cylinder with
The internal diameter of the guide through hole 521 is equal.The internal diameter that the positioning guide column 7 protrudes into 521 part of guide through hole is less than institute
State the internal diameter that positioning guide column 7 protrudes into main pump flange bolt bore portion.For convenient for the installation of positioning guide column 7, the positioning and guiding
The lower part of end cap 8 is equipped with skewed slot (not shown), i.e., the described post tips are equipped with skewed slot.
In addition, to improve the leakproofness of radioactivity raffinate, 5 centre bore of base station is equipped with close close to the inner periphery of main pump 10
Seal 14, such as O-ring seal.
First in the centre bore that rotor retaining mechanism is mounted on shielding body by low dosage hoisting area, and rotor is locked
Bolt assembly (7 rotor clamping screws are shown in figure) is inserted into the bolt hole of rotor locking plate 1.Hanger and lifting lug are installed again
On shielding body.It is sling suspender is shielded to proper height with crane, fastener is installed in shielding suspender, such as long spiro nail
Dismountable positioning guide column 7 and positioning and guiding end cap 8 is arranged in position.O-ring seal 14 is loaded onto the inner circle of shielding suspender.So
Afterwards, shielding suspender is moved into master, simultaneously slowly fallen right above 10, by positioning guide column 7 and positioning and guiding end cap 8 accurately into
Row radial positioning.Specifically position fixing process is as follows: after positioning guide column 7 installs, positioning and guiding end cap 8 being packed into shielding work
In the guide through hole 521 of tool, rotation adjustment shielding tool, when the bolt of shielding tool guide through hole and main pump kingbolt flange face
When on Kong Yi center line, the threaded hole both shown on one wire, then by fastener, such as super bolt or long spiro nail from
Guide through hole 521 connects the two if threaded hole screws in.After shielding suspender in place, the water conservancy component position of entire main pump
The radioactivity set shields substantially, and operating personnel can be closely close to operation；By job platform, operating personnel locks rotor
Bolt screws in the bolt hole at the top of main pump impeller, and gradually lifts rotor, is finally promoted to impeller and contacts with guide vane.It tears open
Except positioning guide column 7 and positioning and guiding end cap 8, suspender main pump pump bowl flange connection (ginseng will be shielded with super bolt or long spiro nail
See Figure 10).The present invention is organically combined shielding body with rotor retaining mechanism, is during the installation process carrying out operating personnel
It avoids causing to receive excessive radioactive dosage because of short distance operation during rotor part locking；And it is torn open in biological shielding closure plate
During unloading, then the sequence opposite with aforementioned mounting process carries out.
It should be understood by those skilled in the art that foregoing description and the embodiment of the present invention shown in the drawings are only used as illustrating
And it is not intended to limit the present invention.The purpose of the present invention completely effectively realizes.Function and structural principle of the invention is in reality
It applies and shows and illustrate in example, under without departing from the principle, embodiments of the present invention can have any deformation or modification.
Claims (10)
1. a kind of shielding main pump locks shielding tool, which is characterized in that including rotor retaining mechanism, hoisting mechanism, shielding body；
The shielding body is base station with a central hole, and the base station top and surrounding are made of barricade；The hoisting mechanism is set
At the top of the shielding body, for cooperating lifting device lifting shielding main pump locking shielding tool；The rotor retaining mechanism
It is mounted at the top of the shielding body and is mounted in the centre bore；The shielding body is installed on main pump by fastener
On, in the case where the shielding body shields high radioactivity component, the rotor retaining mechanism is for locking rotor part.
2. a kind of shielding main pump according to claim 1 locks shielding tool, which is characterized in that the rotor retaining mechanism
Including rotor locking plate, rotor locking bolt components；The rotor locking plate is mounted in the centre bore of the shielding body, institute
It states rotor locking bolt components to be inserted into the rotor locking plate, is mounted on main pump back spin for shielding body and enters main pump impeller.
3. a kind of shielding main pump according to claim 1 locks shielding tool, which is characterized in that the hoisting mechanism includes
Hanger and lifting lug；The hanger is installed at the top of base station, and the spaced distance between base station；The lifting lug is installed on described
On two heel post of base station.
4. a kind of shielding main pump according to claim 1 locks shielding tool, which is characterized in that the shielding body is one
Side is equipped with the base station of column；Base station top circumference is equipped with upper barricade, and the base station lower circumference is equipped with lower barricade；
Spaced distance between the upper barricade and the lower barricade.
5. a kind of shielding main pump according to claim 1 locks shielding tool, which is characterized in that the barricade is by bilayer
Hollow stainless steel plate is made, and the hollow space of the barricade fills lead.
6. a kind of shielding main pump according to claim 1 locks shielding tool, which is characterized in that the base station centre bore leans on
The inner periphery of nearly main pump is equipped with sealing ring.
7. a kind of shielding main pump according to claim 1 locks shielding tool, which is characterized in that the base station centre bore leans on
The inner periphery of nearly main pump has gradient, is mounted on main pump for being oriented to shielding body.
8. a kind of shielding main pump according to claim 4 locks shielding tool, which is characterized in that further include positioning and guiding
Column, positioning and guiding end cap；The lower barricade axially offers guide through hole；The positioning guide column and the positioning and guiding end
Lid offers assembly through-hole；The positioning guide column is placed in the guide through hole and stretches out guide through hole, with radial fixed
Bit mask main pump locks shielding tool in the installation site on main pump；The positioning and guiding end cap is set on the positioning guide column
Side and the end for being located at the guide through hole, the fastener sequentially pass through the positioning and guiding end cap, the positioning guide column
Shielding body is installed on main pump.
9. a kind of shielding main pump according to claim 8 locks shielding tool, which is characterized in that the positioning guide column is stretched
The internal diameter for entering the guide through hole part is less than the internal diameter that the positioning guide column protrudes into main pump flange bolt bore portion.
10. a kind of shielding main pump according to claim 8 locks shielding tool, which is characterized in that the positioning and guiding end
The lower part of lid is equipped with skewed slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910088665.5A CN109854527B (en) | 2019-01-30 | 2019-01-30 | Locking shielding tool for shielding main pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910088665.5A CN109854527B (en) | 2019-01-30 | 2019-01-30 | Locking shielding tool for shielding main pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109854527A true CN109854527A (en) | 2019-06-07 |
| CN109854527B CN109854527B (en) | 2023-09-08 |
Family
ID=66896998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910088665.5A Active CN109854527B (en) | 2019-01-30 | 2019-01-30 | Locking shielding tool for shielding main pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109854527B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111112939A (en) * | 2020-01-20 | 2020-05-08 | 三门核电有限公司 | Rotor support locking device for online maintenance of large-scale shielding main pump and operation process |
| CN111112960A (en) * | 2020-01-20 | 2020-05-08 | 三门核电有限公司 | Device and process for replacing locking cup at lower part of large shielding main pump |
| CN113526323A (en) * | 2021-07-02 | 2021-10-22 | 哈尔滨电气动力装备有限公司 | Nuclear main pump multi-component combined hoisting method |
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| CN103095023A (en) * | 2013-01-16 | 2013-05-08 | 大连理工大学 | Sealing structure for high-pressure seamless attach in nuclear main pump sartor shielding sleeve |
| KR101608487B1 (en) * | 2015-06-19 | 2016-04-01 | 동원펌프주식회사 | a stand for pump to a adjustable height |
| CN205331003U (en) * | 2016-01-25 | 2016-06-22 | 常州雷利电机科技有限公司 | Shielding formula is rotor subassembly for electronic pump |
| CN108412783A (en) * | 2017-02-10 | 2018-08-17 | 国核电站运行服务技术有限公司 | Nuclear power shielding main pump dismounting process test-bed |
| CN108673417A (en) * | 2018-07-03 | 2018-10-19 | 三门核电有限公司 | A kind of shielding main pump kingbolt dismantling device and assembly and disassembly methods |
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2019
- 2019-01-30 CN CN201910088665.5A patent/CN109854527B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103095023A (en) * | 2013-01-16 | 2013-05-08 | 大连理工大学 | Sealing structure for high-pressure seamless attach in nuclear main pump sartor shielding sleeve |
| KR101608487B1 (en) * | 2015-06-19 | 2016-04-01 | 동원펌프주식회사 | a stand for pump to a adjustable height |
| CN205331003U (en) * | 2016-01-25 | 2016-06-22 | 常州雷利电机科技有限公司 | Shielding formula is rotor subassembly for electronic pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111112939A (en) * | 2020-01-20 | 2020-05-08 | 三门核电有限公司 | Rotor support locking device for online maintenance of large-scale shielding main pump and operation process |
| CN111112960A (en) * | 2020-01-20 | 2020-05-08 | 三门核电有限公司 | Device and process for replacing locking cup at lower part of large shielding main pump |
| CN111112939B (en) * | 2020-01-20 | 2021-01-15 | 三门核电有限公司 | Rotor support locking device for online maintenance of large-scale shielding main pump and operation process |
| CN113526323A (en) * | 2021-07-02 | 2021-10-22 | 哈尔滨电气动力装备有限公司 | Nuclear main pump multi-component combined hoisting method |
| CN113526323B (en) * | 2021-07-02 | 2022-04-08 | 哈尔滨电气动力装备有限公司 | Nuclear main pump multi-component combined hoisting method |
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|---|---|
| CN109854527B (en) | 2023-09-08 |
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