CN208729670U - A kind of steam generator closure plate removal tool - Google Patents
A kind of steam generator closure plate removal tool Download PDFInfo
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- CN208729670U CN208729670U CN201821184109.5U CN201821184109U CN208729670U CN 208729670 U CN208729670 U CN 208729670U CN 201821184109 U CN201821184109 U CN 201821184109U CN 208729670 U CN208729670 U CN 208729670U
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- steam generator
- gas source
- closure plate
- piston cylinder
- triple valve
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Abstract
A kind of steam generator closure plate removal tool belongs to nuclear power station steam generator service technique field.Tool includes gas source, gas source switch, triple valve, two gas source branch lines；The one end of the gas source through gas source switch connection triple valve, the another both ends of triple valve are separately connected two gas source branch lines；The gas source branch line includes the source gas line of piston cylinder and connection triple valve and piston cylinder；The gas source provides kinetic energy for the piston cylinder, and one end of the piston cylinder is equipped with the locating piece to be installed on steam generator, and the other end of the piston cylinder is piston rod, to act on steam generator inner wall.The utility model solves the problems, such as that steam generator closure plate removes difficulty, reduces the dose level of radiation of personnel, improves overhaul efficiency, fast implements the dismounting of steam generator closure plate, effectively reduce the maintenance duration of nuclear power plant's main line important process.
Description
Technical field
The utility model relates to nuclear power station steam generator service technique fields, more particularly to a kind of three generations's nuclear power that is used for steam
Vapour generator closure plate removal tool.
Background technique
Steam generator is one of nuclear power station important equipment, and function is by the heat transfer of primary Ioops coolant to two times
Road water supply, makes it be heated to form steam.During the overhaul of nuclear power station, steam is installed at the hot and cold side nozzle of steam generator
Generator closure plate, to guarantee that steam generator is isolated with pressure vessel.After steam generator closure plate is installed, allow power station multinomial
Important turnover job can carry out simultaneously, such as dress reloads, steam generator EDDY CURRENT, to effectively reduce the overhaul life.
The time that steam generator closure plate is mounted on steam generator nozzle is fortnight or so, persistently bears the one of 10m
Hydrostatic circuit causes the rubber gasket of closure plate to be bonded with tube wall very secured.It is attached due to closure plate rubber gasket and tube wall
Put forth effort very greatly, to cause to remove job very difficult.Meanwhile the working environment that closure plate is removed is high radioactivity workspace, personnel
It requires control in 3 minutes into the internal working time, therefore several staff occurs and enter inside steam generator all
It is unable to complete closure plate dismounting.In order to remove closure plate, personnel enter inside using percussions tools such as sledge hammers, after constantly beaing closure plate
Just smoothly closure plate is removed from steam generator card slot, but the method is easy to damage steam generator and closure plate tool.Cause
This needs to develop and a kind of can be realized what steam generator closure plate was quickly removed in order to facilitate the dismounting of steam generator closure plate
Specific purpose tool.
Utility model content
The utility model in view of the problems of the existing technology, propose one kind can quickly, safety remove steam generation
The steam generator closure plate removal tool of device closure plate.
The utility model has the technical scheme that
A kind of steam generator closure plate removal tool of the utility model, including gas source, gas source switch, triple valve, two gas
Source branch line；The one end of the gas source through gas source switch connection triple valve, the another both ends of triple valve are separately connected two gas sources
Branch line；The gas source branch line includes the source gas line of piston cylinder and connection triple valve and piston cylinder；The gas source is
The piston cylinder provides kinetic energy, and one end of the piston cylinder is equipped with the locating piece to be installed on steam generator, the piston
The other end of cylinder is piston rod, to act on steam generator inner wall.
Preferably, the piston cylinder includes piston shell and stretches in the piston rod of piston shell；The piston cylinder
One end connects triple valve through source gas line at piston shell.
Preferably, the locating piece is positioning pin, the location hole for being installed on closure plate.
Preferably, the positioning pin is cylindrical type positioning pin.
Preferably, the source gas line is flexible pipe line.
The utility model has the following beneficial effects:
A kind of steam generator closure plate removal tool of the utility model solves steam generator closure plate and removes difficult ask
Topic reduces the dose level of radiation of personnel, improves overhaul efficiency, fast implements the dismounting of steam generator closure plate, effectively reduce
The maintenance duration of nuclear power plant's main line important process.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of steam generator closure plate removal tool of the utility model；
Fig. 2 is steam generator blind structure schematic diagram；
Fig. 3 is that a kind of steam generator closure plate removal tool of the utility model is installed on the mounting structure on steam generator
Schematic diagram.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
It is that closure plate and pipe friction are big that steam generator closure plate, which removes difficult key problem, can not rotate and cause, thus
The dismounting of closure plate is realized in selection using Pneumatic rotary tools.Such as Fig. 1-3, a kind of steam generator closure plate of the utility model is removed
Tool includes 3, two gas source 1, gas source switch 2, triple valve gas source branch lines.The gas source 1 connects threeway through gas source switch 2
One end of valve 3, the another both ends of triple valve 3 are separately connected two gas source branch lines.Two gas source branch lines are connected in parallel.Institute
State the source gas line 10 that gas source branch line includes piston cylinder and connection triple valve 3 and piston cylinder.
The gas source 1 is provided by compressed air system in factory or air compressor machine, provides kinetic energy for the piston cylinder.
The gas source switch 2 has two functions on and off, does not need adjustment effect, to guarantee the reliable of switch
Property.
The source gas line 10 is flexible pipe line, is placed using its flexibility convenient for pipeline, and then convenient for pacifying dismantling device
Loaded on steam generator.Gas source line branches where the gas source, gas source switch, the triple valve are at two-way parallel connection
Source gas line 10, source gas line are connected with the piston cylinder on every road, guarantee two piston cylinder energy synchronization actions in parallel.
The piston cylinder includes piston shell 5 and stretches in the piston rod 6 of piston shell 5.One end of the piston cylinder exists
Triple valve 3 is connected through source gas line 7 at piston shell 5, the other end of the piston cylinder is that piston rod acts on end.Wherein, in work
The piston shell 5 that plug cylinder connects one end of triple valve 3 is equipped with locating piece 4, and the locating piece can be cylindrical type positioning pin, uses
In the location hole 9 for being installed to steam generator closure plate, the piston rod 6 of piston cylinder acts on steam generator inner wall, sufficiently benefit
Use steam generator inner wall as the fulcrum of reaction force, when steam generator closure plate removal tool is enterprising mounted in steam generator
When row operation, closure plate is realized rotation under the synchronous effect of two piston cylinders in parallel and is disengaged with steam generator card slot, thus real
The smooth dismounting of existing closure plate.
The utility model is removed using above-mentioned steam generator closure plate removal tool.Method for dismounting includes:
The piston cylinder of each gas source branch line is installed on upper steam generator by step S01 by locating piece 4,
And pass through piston rod 6 and steam generator inner wall contact action；Wherein, the piston cylinder installation direction phase of two gas source branch lines
Instead；
Step S02, opens gas source switch 2, piston cylinder movement, and piston rod 6 drives closure plate rotation until disengaging steam generation
Device；
Step S03 closes gas source switch 2, takes out steam generator closure plate removal tool and closure plate.
Specifically, before step S01, whether personnel inspection scene gas source 1 be can be used, if available, execution step S01 ~
S03.Then, personnel enter inside steam generator, confirm closure plate installation site.Then, specific purpose tool is installed to steam hair
On raw device, specifically, the piston cylinder of each gas source branch line is installed to the positioning of steam generator closure plate by positioning pin 4
In hole 9,11 contact action of card slot of piston rod 6 and steam generator.Wherein the installation direction of two actuating rods is on the contrary, to guarantee
Closure plate can clockwise or counterclockwise, installation direction as shown in Figure 3.Later, gas source switch 2 is opened, piston cylinder movement is living
Stopper rod 6 drive closure plate ontology 8 rotate, closure plate seam allowance 7 by the card slot 11 of steam generator rotate to opening 12 when, the closure plate
Disengage the steam generator card slot 11.Finally, closing gas source switch 2, steam generator closure plate removal tool and closure plate are taken out,
The dismounting work of closure plate is rapidly completed.
It should be understood by those skilled in the art that foregoing description and the embodiments of the present invention shown in the drawings are only used as
It illustrates and is not intended to limit the utility model.The purpose of this utility model completely effectively realizes.The function of the utility model
And structural principle shows and illustrates in embodiment, under without departing from the principle, the embodiments of the present invention can
To have any deformation or modification.
Claims (5)
1. a kind of steam generator closure plate removal tool, which is characterized in that including gas source, gas source switch, triple valve, two gas sources
Branch line；The one end of the gas source through gas source switch connection triple valve, the another both ends of triple valve are separately connected two gas sources point
Bye-pass；The gas source branch line includes the source gas line of piston cylinder and connection triple valve and piston cylinder；The gas source is institute
It states piston cylinder and kinetic energy is provided, one end of the piston cylinder is equipped with the locating piece to be installed on steam generator, the piston cylinder
The other end be piston rod, to act on steam generator inner wall.
2. a kind of steam generator closure plate removal tool according to claim 1, which is characterized in that the piston cylinder includes
It piston shell and stretches in the piston rod of piston shell；One end of the piston cylinder is at piston shell through source gas line connection three
Port valve.
3. a kind of steam generator closure plate removal tool according to claim 1, which is characterized in that the locating piece is fixed
Position pin, the location hole for being installed on closure plate.
4. a kind of steam generator closure plate removal tool according to claim 3, which is characterized in that the positioning pin is
Cylindrical type positioning pin.
5. a kind of steam generator closure plate removal tool according to claim 1, which is characterized in that the source gas line is
Flexible pipe line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821184109.5U CN208729670U (en) | 2018-07-25 | 2018-07-25 | A kind of steam generator closure plate removal tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821184109.5U CN208729670U (en) | 2018-07-25 | 2018-07-25 | A kind of steam generator closure plate removal tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208729670U true CN208729670U (en) | 2019-04-12 |
Family
ID=66028346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821184109.5U Active CN208729670U (en) | 2018-07-25 | 2018-07-25 | A kind of steam generator closure plate removal tool |
Country Status (1)
| Country | Link |
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| CN (1) | CN208729670U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108747962A (en) * | 2018-07-25 | 2018-11-06 | 三门核电有限公司 | A kind of steam generator closure plate removal tool and method |
-
2018
- 2018-07-25 CN CN201821184109.5U patent/CN208729670U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108747962A (en) * | 2018-07-25 | 2018-11-06 | 三门核电有限公司 | A kind of steam generator closure plate removal tool and method |
| CN108747962B (en) * | 2018-07-25 | 2023-09-08 | 三门核电有限公司 | Tool and method for removing blocking plate of steam generator |
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