CN203002857U - Shape correcting device for correcting basket barrel circular degree - Google Patents
Shape correcting device for correcting basket barrel circular degree Download PDFInfo
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- CN203002857U CN203002857U CN 201220699244 CN201220699244U CN203002857U CN 203002857 U CN203002857 U CN 203002857U CN 201220699244 CN201220699244 CN 201220699244 CN 201220699244 U CN201220699244 U CN 201220699244U CN 203002857 U CN203002857 U CN 203002857U
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Abstract
A shape correcting device for correcting a basket barrel circular degree comprises a shape correcting tool and a supporting ring tool, wherein the shape correcting tool comprises a hydraulic jack, a plurality of square support heads and a circular jacking head arranged at the top end of the hydraulic jack, and the supporting ring tool comprises a plurality of supporting rings which are arranged in a laminated mode and connection rods arranged between the supporting rings. Rough correcting station arrangement is carried out firstly, then rough correction is carried out, secondly a vertical lathe is used for measuring the barrel circular degree, then fine correcting station arrangement is carried out, fine correction is carried out thirdly, the supporting ring tool is installed, and finally the size is stabilized and heating process is carried out on the size. The shape correcting device for correcting the basket barrel circular degree is strong in operability, convenient to construct, good in shape correcting effect, capable of enabling products to fully meet design requirements, short in shape correcting cycle, and capable of meeting schedule requirements.
Description
Technical field
The utility model relates to a kind of for the orthopedic orthopedic appliance of pressurized water reactor in-pile component cradle cylinder body circularity.
Background technology
Important component part as three generations's reactor core internals, cradle cylinder body is also the main load parts of reactor core internals, and all load such as the whipping load that the load that the deadweight of reactor core parts, thrust, ANALYSIS OF COOLANT FLOW are brought, seismic (seismal and pipeline breaking cause all are passed on pressure vessel hanging basket supporting surface by the hanging basket flange for upper shell.
As shown in Figure 1, more than three generations's reactor hanging basket upper shell internal diameter reached 3M, wall thickness is about 50mm only, and 1 road complete penetraction and fusion in welding circumferential weld, 1 road complete penetraction and fusion in welding longitudinal joint are arranged, and needed perforate and welded delivery port and take over, and circularity requires very strict.Cradle cylinder body be stainless steel (SA240, TP 304, SS), its rigidity is relatively poor, yield strength is not high, thermal conductivity factor little (approximately 1/3 of mild steel), linear expansion coefficient large (than mild steel large 50%), as easy as rolling off a log distortion during welding under free state.And three generations's reactor hanging basket upper shell assembly with two generation nuclear power heap type the hanging basket upper shell compare, it is larger that the aperture is taken in its diameter and water outlet, stricter to the requirement of cylindricity and wall thickness dimension tolerance.One of single cylindrical degree just need to reach 5.08mm.
Two generation the reactor cradle cylinder body manufacture process in, the event that barrel soldering distortion causes circularity over tolerance often appears.Serious welding deformation occurs as No. 3 heap cradle cylinder body of: Qinshan Phase II NPP second phase extension project (CPR heap type) reactor core internals in manufacture process, long and short axle departs from and reaches 26.5mm, causes project progress seriously to lag behind.
Place's internal diameter too small problem in the mouth of a river also appears in US Westinghouse company when making First three generations reactor hanging basket upper shell.Finally they have taked to be added with the method for the regional cylinder inboard wall of work delivery port, and product is met design requirement.Although the method has the designing and calculating support, the result of water outlet wall thickness reduction can appear after all.
Be badly in need of high and effective cylindrical shell shape righting tool and the technique of cover operability, cylindrical shell is finally met design requirement.
The utility model content
What the utility model provided is a kind of for the orthopedic orthopedic appliance of cradle cylinder body circularity, strong operability, and it is convenient to implement, and the duration is short, and orthopedic effect is good.
In order to achieve the above object, it is a kind of for the orthopedic orthopedic appliance of cradle cylinder body circularity that the utility model provides, and this device comprises shape righting tool and holds round the ring frock;
Described shape righting tool integral body is a disc inner support, and it comprises hydraulic jack and some square supporting members, also comprises the circle top that is arranged on the hydraulic jack top;
The described ring frock that holds round comprises holding round ring and being arranged on the connecting rod that holds round between ring of some layering settings.
Described square supporting member is removable, and can regulate the amount of ejecting.
Described circular top comprises large circle top and small circular comes directly towards, and the diameter of described large circular top is greater than the diameter of the delivery port on cradle cylinder body, and the diameter that described small circular comes directly towards is greater than the diameter of hydraulic cylinder.
The described ring frock that holds round also comprises hook and lower draw-bar, this on hook be fixed on the superiors to hold round ring peripheral, this lower draw-bar is fixed on the undermost ring periphery of holding round.
The described periphery that holds round ring arranges some tops bolt along radial direction, on the bolt of top, stainless steel is set and comes directly towards.
The utlity model has following advantage:
1, extremely strong operability is arranged;
2, implement conveniently;
3, orthopedic effect is good, and product is met design requirement fully;
4, the orthopedic duration short, can satisfy schedule requirement.
Description of drawings
Fig. 1 is the structural representation of cradle cylinder body;
Fig. 2 is the structural representation of shape righting tool;
Fig. 3 is the structural representation of jack;
Fig. 4 holds round the structure of rings top view;
Fig. 5 is the mounting structure schematic diagram that holds round ring;
Fig. 6 slightly rectifys the cutaway view that station is arranged;
Fig. 7 slightly rectifys the top view that station is arranged;
Fig. 8 and Fig. 9 are the barrel distortion tendency charts;
Figure 10 is that essence is rectified the schematic diagram that station is arranged;
Figure 11 is the local schematic diagram of correcting.
The specific embodiment
Following according to Fig. 2～Figure 11, illustrate preferred embodiment of the present utility model.
It is a kind of for the orthopedic orthopedic appliance of cradle cylinder body circularity that the utility model provides, and this device comprises shape righting tool 1 and holds round ring frock 2;
As shown in Figure 2, described shape righting tool 1 integral body is a disc inner support, and it comprises hydraulic jack 101 and some square supporting members 103, also comprises the circle top 102 that is arranged on hydraulic jack 101 tops;
As shown in Figure 3, described hydraulic jack (QF630T-20b) 101 EIAJs are 600T;
Described square supporting member 103 is removable, and can regulate the amount of ejecting, this square supporting member 103 when rectifying type as the fulcrum on the barrel of shape righting tool 1 in cradle cylinder body;
In the present embodiment, the surrounding of shape righting tool 1 10 the square supporting members 103 that distributed;
Described circular top 102 comprises large circular top and small circular comes directly towards, the diameter of described large circular top is greater than the diameter of the delivery port on cradle cylinder body, be used for the delivery port peripheral region of cradle cylinder body is slightly rectified, the power of jack can be passed to uniformly on the cylinder inboard wall of delivery port periphery when orthopedic, prevent that impression from appearring in cylinder inboard wall, described small circular top diameter is greater than the diameter of hydraulic cylinder, is used for that essence is carried out in the non-delivery port zone of cradle cylinder body strong;
As shown in Figure 4, the described ring frock 2 that holds round comprises holding round ring 201 and being arranged on the connecting rod 202 that holds round between ring 201 of some layering settings;
As shown in Figure 5, this holds round ring frock 2 and also comprises hook 203 and lower draw-bar 204, upward hook 203 is fixed on holding round of the superiors and encircles 201 peripheries, this lower draw-bar 204 is fixed on undermost holding round and encircles 201 peripheries, should upper hook 203 and lower draw-bar 204 make and hold round ring frock 2 and take into account the cylindrical shell hoisting function, and prevent coming off of heat treatment process support annulus frock 2;
The described periphery that holds round ring 201 arranges some tops bolt 2011 along radial direction, the screw thread distortion that causes for prevention heat treatment makes the dismounting difficulty, top bolt 2011 is chosen the larger screw thread grade of carbon steel bolt and gap, and stainless steel top 2012 is set on bolt 2011 in the top;
In the present embodiment, arrange 3 in the coaxial layering of inner barrel and hold round ring 201, be connected with connecting rod 202 each other, each holds round 20 top bolts 2011 is set on ring 201, this hold round ring frock 2 be used for circularity orthopedic after, before size stabilization heat treatment, during to the fine setting of cylinder roundness and size stabilization heat treatment, the constraint cylindrical shell, prevent its distortion; Be provided with connecting rod 202 between 201 respectively holding round ring, prevent the single ring 201 easy loose or dislocations that hold round.
Utilize orthopedic appliance of the present utility model to carry out orthopedic method to cylindrical shell and comprise following steps:
Step 1, slightly rectify station and arrange;
As shown in Figure 6 and Figure 7, slightly rectify the station layout and comprise following steps:
Step 1.1, measurement and mark cylinder internal diameter;
Measure the internal diameter of 8 equally divided positions in A, B in cylindrical shell, C three cross sections, be marked near measurement point;
Described A cross section is positioned at the delivery port upper end, and described B cross section is positioned at the delivery port lower end, and described C cross section is positioned at the cylindrical shell lower end;
Step 1.2, at the peripheral mounting bracket of cylindrical shell and dial gauge;
Four midline positions in the cylindrical shell outside, 4 place's supports (or block of wood) are installed, are being taken personnel's observation platform (observe support on dial gauge with) near support, the position in three cross sections of corresponding A, B, C on each support, a dial gauge is installed respectively, controlling dimension when being used for rectifying type;
The stroke of described dial gauge is 80mm;
Step 1.3, shape righting tool 1 is installed to inner barrel;
Lifting shape righting tool 1 is held on the cushion block in cylindrical shell to inner barrel;
Because cylindrical shell can't be out of shape greater than flange is arranged at blue place, the linear variation of cylindrical shell up and down deflection is so the setting height(from bottom) of shape righting tool 1 is than the slightly high 50 ~ 100mm of delivery port axis;
Step 2, thick rectifying;
Use the delivery port zone of 101 pairs of cylindrical shells of hydraulic jack to carry out alternately orthopedic, until the diameter in cylindrical shell A cross section is poor less than 15mm;
Because B, C cross section can change with the A changes of section, always and diameter poor poor less than the A diameter of section, so need not to judge B, C cross section;
Use hydraulic jack 101 to push up to the cylindrical shell plastic deformation, judge whether the one-sided distortion of cylindrical shell accumulative total surpasses 3mm, if, remeasure cylinder internal diameter (internal diameters of 8 equally divided positions in A, B, C three cross sections), with orthopedic before or orthopedic measurement data contrast last time, confirm by the vary in diameter that contrast draws whether vary in diameter conforms to the dial gauge reading, and seek deformation tendency by vary in diameter;
The registration that not only will monitor constantly each dial gauge of cylinder body outer wall in thick strong process changes, also need simultaneously to monitor constantly the exerting oneself of hydraulic pump of hydraulic jack, generation is only controlled deflection and ignore the strong accident of the stressed excessive mistake that causes in case the regional area strain is different with other zones with stressed relation;
Be diligent in analyzing the inner diameter measurement data, find out barrel distortion trend, if the deforming trend rhombus (as shown in Figure 8) of cylindrical shell, need not to install the square supporting member 103 in both sides when orthopedic, if the deforming trend of cylindrical shell square (as shown in Figure 9), when orthopedic, the square supporting member 103 in both sides need to be installed, and adjust the distance that ejects of each square supporting member 103 by actual conditions;
Step 3, use vertical lathe are measured the cylindrical shell cylindricity;
Step 4, essence are rectified station and are arranged;
As shown in figure 10, all processes that essence is rectified all carries out on vertical lathe, can the most effectively grasp the bulk deformation trend of cylindrical shell;
Need to proofread and correct smoothing on cylindrical shell after vertical lathe, this moment, better distortion was minimum due to shell flange end rigidity, can smooth with flange lower plane and symmetrical correction of flange excircle, concrete grammar is for respectively to seek a point in 4 angles in 0 °, 90 °, 180 °, 270 °, cross section of flange excircle sustained height, play table and measure the cylindrical shell drift condition, use subsequently the claw on the lathe floral disc to adjust cylindrical shell until tubular axis and lathe floral disc center superposition; Equally, respectively seek a point 0 °, 90 °, 180 °, 270 ° 4 angles on flange lower surface agreement diameter, play table and measure cylindrical shell inclination situation, adjust tubular axis until vertical with the lathe floral disc (the method common vertical lathe operative employee all know) by jack;
Step 5, essence are rectified;
Use the delivery port zone of 101 pairs of cylindrical shells of hydraulic jack to carry out alternately orthopedic, until the cylindricity of cylindrical shell is less than or equal to 6.5mm;
The method that essence is rectified is with thick strong identical, but its amount of ejecting need to be smaller than slightly rectifying, in case excessively strong;
Every top is once or by behind actual conditions top two to three times, measure the cylindricity in cylinder body outer wall A, B, C three cross sections with vertical lathe, grasp at any time the cylindricity data, constantly adjust the orthopedic amount of ejecting by these data, discovery has local deformation overproof, small circular top is installed part carried out in non-delivery port zone corrects (as shown in figure 11), guarantee that orthopedic general trend is circle;
Two delivery ports replace orthopedic alternately opportunity so that the cylindricity data results of measuring is as the criterion, and are when both sides radius accumulative total deflection is identical, alternately orthopedic;
When one side delivery port was rectified type, the opposite side delivery port also can deform because of stressed, but this distortion is less; Because cylindrical shell material yield strength is not identical everywhere, so (when being made as a) type of rectifying, the deflection of opposite side (being made as b) in this process is when rectifying type to opposite side delivery port (b), and the deflection that this side (b) occurs is different to a side delivery port; For example 90 ° of delivery ports are rectified type, make this side radial deformation 4mm, and 270 ° of side radial deformation 2mm; And when changing 270 ° of strong types, during 270 ° of side radial deformation 3mm, 90 ° of side radial deformation 1mm; In this case, both sides radius accumulative total deflection is identical, just should consider that side change at this moment rectifys type;
Step 6, installation hold round ring frock 2, and adjust the cylindricity of cylindrical shells to 4mm with holding round ring 201;
Install respectively three layers of A, B, C and hold round ring 201, with the final cylindricity of cylindrical shell of adjusting of top bolt 2011 to 4mm;
Step 7, size stabilization heat treatment.
After cylindrical shell was done size stabilization heat treatment, the cylindrical shell size finalized the design almost.Although with the circularity resilience to some extent that holds round the ring adjustment, still satisfy 5.08 cylindricity requirement.
Due to the former of hanging basket upper shell distortion because occur angular deformation during the delivery port welding, and showing as delivery port axis place internal diameter dwindles, and axis becomes the internal diameter in 90 ° of orientation bigger than normal therewith, and whole cylindrical shell becomes rule oval, so orthopedic mainly for the delivery port zone.
Need to adjust fulcrum orientation and the fulcrum amount of ejecting according to deformation tendency when orthopedic, thus the necessary easy disassembly of the bracing or strutting arrangement that contact with barrel around shape righting tool, and the amount of ejecting has certain adjusting leeway.
The hydraulic jack of shape righting tool must have enough exerting oneself, and satisfies and brings the stress that exceeds the cylinder material yield strength to cylindrical shell when orthopedic, makes it plastic deformation.
The each several part of orthopedic appliance is all installed independently hanger, the needs when satisfying station layout and frock self installation.
The utlity model has following advantage:
1, extremely strong operability is arranged;
The utility model comprises the station layout drawing of each orthopedic step, can complete predeterminated target within the limited duration;
Comprise the points for attention that a large amount of orthopedic experiences obtain, the operator is had extremely strong directiveness;
2, implement conveniently;
Except shape righting tool and general holding round ring, orthopedic other frocks that need not;
When orthopedic station is arranged, adopt the workshop to have slack resources now more;
The various sizes surveillance and control measure is set, and operating personnel can in time understand orthopedic effect;
3, orthopedic effect is good, and product is met design requirement fully;
Scheme is considered careful, estimates all problems that product may occur;
The super 20mm of the orthopedic front circularity of first three generations's nuclear power cradle cylinder body that makes, orthopedic rear circularity is 4.5mm approximately;
4, the orthopedic duration short, can satisfy schedule requirement;
Because the utility model has extremely strong operability, implements to facilitate this two characteristics, make it obtain again short advantage of duration;
Three generations's nuclear power generating sets cradle cylinder body is orthopedic only lasts 11 days for first that make.
Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.After those skilled in the art have read foregoing, for multiple modification of the present utility model with to substitute will be all apparent.Therefore, protection domain of the present utility model should be limited to the appended claims.
Claims (5)
1. one kind is used for the orthopedic orthopedic appliance of cradle cylinder body circularity, it is characterized in that, this device comprises shape righting tool (1) and holds round ring frock (2);
Described shape righting tool (1) integral body is a disc inner support, and it comprises hydraulic jack (101) and some square supporting members (103), also comprises the circle top (102) that is arranged on hydraulic jack (101) top;
The described ring frock (2) that holds round comprises holding round ring (201) and being arranged on the connecting rod (202) that holds round between ring (201) of some layering settings.
2. as claimed in claim 1ly it is characterized in that for the orthopedic orthopedic appliance of cradle cylinder body circularity, described square supporting member (103) is removable, and can regulate the amount of ejecting.
3. as claimed in claim 1 for the orthopedic orthopedic appliance of cradle cylinder body circularity, it is characterized in that, described circular top (102) comprises large circular top and small circular comes directly towards, the diameter of described large circular top is greater than the diameter of the delivery port on cradle cylinder body, and the diameter that described small circular comes directly towards is greater than the diameter of hydraulic cylinder.
4. as claimed in claim 1 for the orthopedic orthopedic appliance of cradle cylinder body circularity, it is characterized in that, the described ring frock (2) that holds round also comprises hook (203) and lower draw-bar (204), what should upper hook (203) be fixed on the superiors holds round ring (201) periphery, and this lower draw-bar (204) is fixed on undermost ring (201) periphery of holding round.
5. as claimed in claim 1 for the orthopedic orthopedic appliance of cradle cylinder body circularity, it is characterized in that, the described periphery that holds round ring (201) arranges some tops bolts (2011) along radial direction, and stainless steel top (2012) is set on top bolt (2011).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220699244 CN203002857U (en) | 2012-12-18 | 2012-12-18 | Shape correcting device for correcting basket barrel circular degree |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220699244 CN203002857U (en) | 2012-12-18 | 2012-12-18 | Shape correcting device for correcting basket barrel circular degree |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203002857U true CN203002857U (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220699244 Expired - Lifetime CN203002857U (en) | 2012-12-18 | 2012-12-18 | Shape correcting device for correcting basket barrel circular degree |
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| CN (1) | CN203002857U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102941251A (en) * | 2012-12-18 | 2013-02-27 | 上海电气核电设备有限公司 | Device and method for correcting roundness of hanging basket barrel body |
| CN109702048A (en) * | 2019-02-18 | 2019-05-03 | 张帝 | A kind of thin-wall metal staving apparatus for shaping |
-
2012
- 2012-12-18 CN CN 201220699244 patent/CN203002857U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102941251A (en) * | 2012-12-18 | 2013-02-27 | 上海电气核电设备有限公司 | Device and method for correcting roundness of hanging basket barrel body |
| CN109702048A (en) * | 2019-02-18 | 2019-05-03 | 张帝 | A kind of thin-wall metal staving apparatus for shaping |
| CN109702048B (en) * | 2019-02-18 | 2020-05-22 | 佛山市顺德区轩泰金属制品有限公司 | Thin-wall metal barrel body shaping device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130619 |
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| CX01 | Expiry of patent term |