CN207414710U - A kind of welding pairing device of embedded pressure inlet for Nuclear piping - Google Patents
A kind of welding pairing device of embedded pressure inlet for Nuclear piping Download PDFInfo
- Publication number
- CN207414710U CN207414710U CN201721554600.8U CN201721554600U CN207414710U CN 207414710 U CN207414710 U CN 207414710U CN 201721554600 U CN201721554600 U CN 201721554600U CN 207414710 U CN207414710 U CN 207414710U
- Authority
- CN
- China
- Prior art keywords
- supporting block
- pressure inlet
- welding
- upper supporting
- reversible deformation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Butt Welding And Welding Of Specific Article (AREA)
- Arc Welding In General (AREA)
Abstract
The utility model is related to a kind of welding pairing devices of the embedded pressure inlet for Nuclear piping,Including upper supporting block,Jack and lower supporting block and reversible deformation pad,The one side of upper supporting block is the cambered surface to fit with the inner surface of main pipeline,Opposite side is the plane being in contact for the screw rod with jack,The cambered surface that the one side of lower supporting block fits for the inner surface of main pipeline,Opposite side is the plane for placing jack,Annular groove is offered in the cambered surface of upper supporting block,The edge in the hole on main pipeline is located at the surface of annular groove,The through hole communicated with annular groove is offered in upper supporting block,The shape of reversible deformation pad is and the cambered surface of upper supporting block fitting and identical with the shape of the inner ring of annular groove,Area is less than the area of inner ring,Reversible deformation pad is placed in the cambered surface of upper supporting block,The edge of reversible deformation pad is located at immediately below the lower face of pressure inlet to be welded.Dimensional accuracy meets the standard of nuclear power system pipeline after the utility model ensure that welding.
Description
Technical field
The utility model is related to a kind of welding pairing devices of the embedded pressure inlet for Nuclear piping.
Background technology
Nuclear power station requires items of equipment very high to ensure nuclear safety.It has been generally designed and has been permitted on the pipeline of nuclear power station
It is chiefly used in measuring the pressure inlet of temperature and pressure.Main nuclear power pipeline is the pipeline connected between nuclear reactor and steam generator,
Belong to I grades of equipment of nuclear safety, so very high to the quality requirement of welding, do not allow that there are misalignment, overlap, root are prominent, interior
Recessed and metal oxidation etc..Simultaneously to the dimensional accuracy, positional precision, Geometrical Tolerance Principle of the stub (tube) after welding also all very
Height or even also very high to the inner surface entirety roughness requirements of final endoporus.
The embedded pressure inlet welding of magnificent dragon No.1 main nuclear power pipeline is that the pressure inlet of minor diameter is connected to major loop is big
On diameter pipes, interface irregularly causes group big to difficulty for the shape of a saddle and groove, and Figure of description 10 is typical Hua Longyi
The embedded pressure inlet of number main nuclear power pipeline, the China dragon No.1 a diameter of Φ 939.4mm of main pipe hot leg, thickness 76mm, cold section of master
Pipe diameter is Φ 836mm, and thickness 69mm, pressure inlet weight is about 70kg.Requirement after embedded pressure inlet welding is to take over
Mouth axis should ensure that vertical, angle tolerance ± 0.3 ° with main pipeline axis, and after pressure inlet welding, pressure inlet root should be with main pipeline
It flushes, does not allow raised or sunken.The method of the prior art cannot reach above-mentioned requirements, because can not accurately ensure pressure inlet group
To height, and pressure inlet can be made to sink to pipeline center because of welding deformation after pressure inlet welding, the variation tendency of sinking is complicated,
Cause post welding distortion size very poor, the size requirement of product cannot be met completely；Again because pipe diameter size it is big, pressure inlet with
Pipe fitting welding groove is in irregular shape, and the imperial No.1 main pipeline material of China is austenitic stainless steel, and when welding needs back side inertia
Gas shield, inert gas shielding effect in the back side is poor in the welding process for the method for the prior art, seriously affects welding quality.
Since nuclear power system pipeline interior media is highly pressurised liquid, first welding quality cannot be guaranteed, it may appear that leakage
Situation, influences safe operations in 60 years of nuclear power station, so must assure that the quality of welding meets designing quality requirement, does not allow
What incumbent leakage.
The content of the invention
The purpose of this utility model is to provide a kind of welding pairing device of the embedded pressure inlet for Nuclear piping, solution
Pressure inlet determined with the technical issues of cannot meeting product size requirement and welding groove in irregular shape, being protected after pipe fitting welding
Dimensional accuracy meets the standard of nuclear power system pipeline after card welding.
The purpose of this utility model is achieved through the following technical solutions：
A kind of welding pairing device of embedded pressure inlet for Nuclear piping, including upper supporting block, jack is under
Supporting block and reversible deformation pad, the one side of the upper supporting block are the cambered surface to fit with the inner surface of main pipeline, and opposite side is
For the plane that the screw rod with jack is in contact, arc that the one side of the lower supporting block fits for the inner surface of main pipeline
Face, opposite side offer annular groove to place the plane of jack, in the cambered surface of upper supporting block, the edge in the hole on main pipeline
Positioned at the surface of annular groove, the through hole communicated with annular groove, the shape of the reversible deformation pad are offered in upper supporting block
Shape be with the cambered surface of upper supporting block fitting and identical with the shape of the inner ring of annular groove, area is less than the area of inner ring, contravariant
Shape pad is placed in the cambered surface of upper supporting block, and the edge of reversible deformation pad is located at immediately below the lower face of pressure inlet to be welded.
The utility model more preferably technical solution, the material of the reversible deformation pad is stainless steel.
The utility model more preferably technical solution, the thickness of the reversible deformation pad is 1.5-2.5mm.
The utility model more preferably technical solution, the thickness of the reversible deformation pad is 2.0mm.
More preferably technical solution, the jack are 5 tons of jack to the utility model.
The utility model more preferably technical solution, the depth of the annular groove are 20~30mm, width for 50~
60mm。
The beneficial effects of the utility model are as follows：
Welding pairing device provided by the utility model is larger to difficulty especially suitable for heavier-weight, group, and after welding
The group pair of the stringent embedded pressure inlet of requirement for height, it is ingenious in design and highly practical, it accurately ensure that pressure inlet group to height
Degree prevents pressure inlet after welding because welding deformation can make pressure inlet sink to pipeline center, and basic surface flushes after welding, also full
The foot requirement of angle tolerance ± 0.3 ° of pressure inlet, ensure that welding precision and quality, so the utility model is to ensureing core
The security of electric system is of great importance.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the structure diagram of each component of the utility model；
Fig. 3 is the schematic diagram of the course of work of the utility model；
Fig. 4 is to adjust schematic diagram before utility model works；
Fig. 5 is the top view of adjustment schematic diagram before utility model works；
Fig. 6 is the A-A sectional views of adjustment schematic diagram before utility model works；
Fig. 7 is the B-B sectional views of adjustment schematic diagram before utility model works；
Fig. 8 is the utility model welded condition schematic diagram；
Fig. 9 is the K portions enlarged drawing of the utility model welded condition schematic diagram；
Figure 10 is the structure diagram of cold section of voltage-stablizer injection spray pipe pressure inlet of magnificent imperial No.1；
Wherein：Reversible deformation pad 1；Upper supporting block 2；Jack 3；Lower supporting block 4；Pressure inlet 5；Main pipeline 6；Protective gas pipe
7；Annular groove 8.
Specific embodiment
The utility model is described in further detail below in conjunction with the example that attached drawing provides.
As illustrated in fig. 1 and 2, the utility model provides a kind of welding group of embedded pressure inlet for Nuclear piping to dress
It puts, including upper supporting block 2, jack 3 and lower supporting block 4 and reversible deformation pad 1, the one side of the upper supporting block 2 are and supervisor
The cambered surface that the inner surface in road 6 fits, opposite side are for the plane that is in contact with the screw rod of jack 3, the lower support
The cambered surface that the one side of block 4 fits for the inner surface of main pipeline 6, opposite side are the plane for placing jack 3, upper supporting block 2
Offer annular groove 8 in cambered surface, the edge in the hole on main pipeline 6 is located at the surface of annular groove 8, is opened in upper supporting block 2
Equipped with the through hole communicated with annular groove 2, the shape of the reversible deformation pad 1 is identical with the cambered surface of upper supporting block 2 and is affixed
It closes and identical with the shape of the inner ring of annular groove 8, area is less than the area of inner ring, and reversible deformation pad 1 places upper supporting block 2
In cambered surface.The material of the reversible deformation pad 1 is stainless steel.The jack 3 is 5 tons of jack.The annular groove 8
Depth for 20~30mm, width is 50~60mm.
The application method of the welding pairing device of the utility model includes the following steps：
Before embedded pressure inlet welding pairing device work provided by the utility model, it is necessary to match somebody with somebody by line size and finish
Into suitable for same caliber difference group to the embedded pressure inlet group of height to using, being adjusted and very heavy risen according to welding requirements
Degree ensures postwelding requirement.
As shown in figure 4, lower supporting block 4 is mounted on immediately below 6 internal diameter groove of pipeline first, the cambered surface patch of lower supporting block 4
Tube wall is closed, jack 3 is mounted on lower 4 planar central position of supporting block, and jack 3 is adjusted to appropriate location, group to upper support
Block 2 is installed to 6 groove of pipeline, and groove is made after group is in upper 2 crown face groove of supporting block, jack 3 to be made to withstand on group completely
Upper 2 planar central position of supporting block is held out against, after installation as shown in Fig. 5,6 and 7.
It is bonded as shown in figure 8, reversible deformation pad 1 is placed on upper 2 arc surface of supporting block, pressure inlet 5 is put completely finally
It is bonded completely on reversible deformation pad 1, pressure inlet 5 and tube groove distance adjustment is consistent rear fixed, welding protection flue 7
Road is connected to group in upper 2 one side through hole of supporting block, making in annular groove 8 of the argon gas full of upper supporting block 2, and argon gas can be from welding
When groove outflow play a protective role, will be played when soldering stainless steel needs the back side to rush argon gas, in annular groove 8 as rushing
The effect of the gas chamber of argon gas, the use state of the utility model are as shown in Figure 3.
As shown in figure 9, the thickness of the reversible deformation pad is 1.5-2.5mm.Reversible deformation pad reserves one for welding deflection
Fixed surplus, for example, welding deflection be 2mm, it is necessary to prepare about 2mm reversible deformation pad, group pair when pass through reversible deformation pad will
Pressure inlet padded 2mm can just accomplish that surface flushes after welding, otherwise after pressure inlet welding, pipe surface will be stayed there are one 2mm
Recess.
Comparison in the practical operation prior art and the utility model welding result draws following result：
After existing method welding stub (tube)：Dimensional accuracy ± 1 °, positional precision ± 3mm, geometric tolerance are coaxial for 1.5mm
Degree, 12.5 μm of inner surface entirety roughness Ra.
After stub (tube) being welded using this method：Dimensional accuracy ± 0.3 °, positional precision ± 1.5mm, geometric tolerance are
0.25mm concentricities, 3.2 μm of inner surface entirety roughness Ra.
The reason for result above, can not accomplish the accurate positionin of circumferential direction and height by artificial and routine side, especially without
Method is that pressure inlet welding sinks to reserving a fixed height, and welding, which is followed by ozzle, can not meet wanting for angular deviation ± 0.3 °
Ask, and exist can not subsequent processing pipe surface recess；Welding is repeatedly grouped using the soldering appliance of the utility model
After experiment, meet the requirement of angular deviation ± 0.3 °, and welding groove is in irregular shape.
Claims (6)
1. a kind of welding pairing device of embedded pressure inlet for Nuclear piping, it is characterised in that：Including upper supporting block, thousand
Jin top and lower supporting block and reversible deformation pad, the one side of the upper supporting block are the cambered surface to fit with the inner surface of main pipeline,
Opposite side is the plane being in contact for the screw rod with jack, and the one side of the lower supporting block is the inner surface phase of main pipeline
The cambered surface of fitting, opposite side offer annular groove to place the plane of jack, in the cambered surface of upper supporting block, on main pipeline
The edge in hole is located at the surface of annular groove, and the through hole communicated with annular groove, the contravariant are offered in upper supporting block
The shape of shape pad be with the cambered surface of upper supporting block fitting and identical with the shape of the inner ring of annular groove, area is less than the face of inner ring
Product, reversible deformation pad are placed in the cambered surface of upper supporting block, under the edge of reversible deformation pad is located at the lower face of pressure inlet to be welded just
Side.
2. a kind of welding pairing device of embedded pressure inlet for Nuclear piping as described in claim 1, feature exist
In：The material of the reversible deformation pad is stainless steel.
3. a kind of welding pairing device of embedded pressure inlet for Nuclear piping as described in claim 1, feature exist
In：The thickness of the reversible deformation pad is 1.5-2.5mm.
4. a kind of welding pairing device of embedded pressure inlet for Nuclear piping as described in claim 1, feature exist
In：The thickness of the reversible deformation pad is 2.0mm.
5. a kind of welding pairing device of embedded pressure inlet for Nuclear piping as described in claim 1, feature exist
In：The jack is 5 tons of jack.
6. a kind of welding pairing device of embedded pressure inlet for Nuclear piping as described in claim 1, feature exist
In：The depth of the annular groove is 20~30mm, and width is 50~60mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721554600.8U CN207414710U (en) | 2017-11-20 | 2017-11-20 | A kind of welding pairing device of embedded pressure inlet for Nuclear piping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721554600.8U CN207414710U (en) | 2017-11-20 | 2017-11-20 | A kind of welding pairing device of embedded pressure inlet for Nuclear piping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207414710U true CN207414710U (en) | 2018-05-29 |
Family
ID=62303417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721554600.8U Active CN207414710U (en) | 2017-11-20 | 2017-11-20 | A kind of welding pairing device of embedded pressure inlet for Nuclear piping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207414710U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107745222A (en) * | 2017-11-20 | 2018-03-02 | 吉林中意核管道制造有限公司 | A kind of welding pairing device of embedded pressure inlet for Nuclear piping |
| CN112719657A (en) * | 2020-12-03 | 2021-04-30 | 珠海瑞凌焊接自动化有限公司 | Multi-station nozzle welding workstation |
-
2017
- 2017-11-20 CN CN201721554600.8U patent/CN207414710U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107745222A (en) * | 2017-11-20 | 2018-03-02 | 吉林中意核管道制造有限公司 | A kind of welding pairing device of embedded pressure inlet for Nuclear piping |
| CN112719657A (en) * | 2020-12-03 | 2021-04-30 | 珠海瑞凌焊接自动化有限公司 | Multi-station nozzle welding workstation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207414710U (en) | A kind of welding pairing device of embedded pressure inlet for Nuclear piping | |
| CN206811393U (en) | A kind of flange welding positioning tooling | |
| CN208713482U (en) | A kind of workbench for positioning and fixing for low rigid three-dimensional curved slab workpiece | |
| CN103791953B (en) | High-precision integrative core level Venturi tube | |
| CN106949315B (en) | The installation method of main steam line in AP1000 nuclear power stations | |
| CN109746633B (en) | Manufacturing process of vacuum chamber support welding block assembly | |
| CN107745222A (en) | A kind of welding pairing device of embedded pressure inlet for Nuclear piping | |
| CN110039233A (en) | The positioning device and its application method of Nozzle Zone of Vessels flange | |
| CN106695213B (en) | A kind of frock clamp and assembly method of large size spherical shell structure horizontal automatic welding | |
| CN205004678U (en) | Transmission line iron tower hydraulic pressure is assembled and is dismantled convenient device of salvageing fast | |
| CN207746623U (en) | The positioning device of Nozzle Zone of Vessels flange | |
| CN202391478U (en) | Static blade embedded type welding partition plate for impulse turbine | |
| CN106271404A (en) | A kind of manufacture method of large-scale Water distribution circular pipe | |
| CN211876906U (en) | Appearance detection device for casting product | |
| CN206513986U (en) | Three-way pipe with compensation pressure and decompression function | |
| CN206140052U (en) | Elbow welding jig frock is responsible for to nuclear power | |
| CN104385170B (en) | A kind of can 90 degree rotate valve body of safety valve fixtures | |
| CN203931520U (en) | A kind of nuclear reactor pressure container O-ring seal producing device | |
| CN204692832U (en) | A kind of dismountable size rotary head | |
| CN207009093U (en) | A kind of reactor protection tube assembly position adjustment workbench | |
| CN209792598U (en) | Ladle nozzle pocket brick mounting and positioning device | |
| CN206356797U (en) | 90 degree of union elbow welding toolings | |
| CN213053549U (en) | Convenient installation frock structure of mouth of pipe | |
| CN209754402U (en) | High nuclear waste glass solidification jar mouth of pipe and upper cover welding shape frock of preapring for an unfavorable turn of events of putting | |
| CN208276412U (en) | A kind of welding tooling of burner inner liner discharge ring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |