CN206356792U - A kind of steam turbine stator blade lagging edge defect REPAIR WELDING frock - Google Patents
A kind of steam turbine stator blade lagging edge defect REPAIR WELDING frock Download PDFInfo
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- CN206356792U CN206356792U CN201621372632.1U CN201621372632U CN206356792U CN 206356792 U CN206356792 U CN 206356792U CN 201621372632 U CN201621372632 U CN 201621372632U CN 206356792 U CN206356792 U CN 206356792U
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Abstract
The utility model discloses a kind of steam turbine stator blade lagging edge defect REPAIR WELDING frock, including back of the body argon box and blade liner.Carry on the back argon box has argon gas receiving space for hollow structure, inside；Argon box is carried on the back provided with argon filling mouthful；The top surface for carrying on the back argon box is more than stator blade lagging edge restoring area to be welded, and top surface with it is multiple go out argon hole in the form of provided with welding argon gas protection zone；The securing bracket that back of the body argon box can extend to above back of the body argon box top provided with least two pairs, per pair securing bracket on be equipped with least one to lower feeding, fastening bolt for clamping stator blade.Blade liner is copper laminated structure, and the top surface molded line of blade liner is matched with back side profile molded line of the stator blade in REPAIR WELDING；Blade liner is laid on back of the body argon box top, and is provided with the welding argon gas protection zone corresponding with back of the body argon box on blade liner in the form of multiple logical argon holes.It effectively reduces the technical difficulty of REPAIR WELDING, improves remediation efficiency, it is ensured that repairing quality.
Description
Technical field
The utility model is related to the defect repair equipment of steam turbine stator blade, specifically a kind of steam turbine stator blade lagging edge
Defect REPAIR WELDING frock.
Background technology
The stator blade of steam turbine is fixed on partition body circumference, and the two composition partition board of steam turbine, dividing plate is used in cylinder
Portion is divided into multiple acting steam chests.Steam turbine is after operation some cycles, the blade on dividing plate（That is stator blade）Surface can go out
The defects such as existing burn into crackle, it is necessary to repaired in time, the working surface of stator blade otherwise can be caused to damage, be even broken and
Scrap.
The surface defect of partition board of steam turbine blade（That is surface corrosion, crackle etc.）Reparation is mainly realized in a welding manner
's.During the whole REPAIR WELDING of stator blade surface defect, technical difficulty coefficient highest position be thickness only 0.5~
0.8mm lagging edge.
At present, the lagging edge defect REPAIR WELDING of stator blade realizes that is, dividing plate is not dismantled and integrated straight on dividing plate
Connect implementation repair welding.Due to lacking effective REPAIR WELDING frock, the welding measure being usually taken is in stator blade lagging edge
The two-sided of defect area carries out repair by welding respectively, and specific REPAIR WELDING process is：First weld lagging edge a surface, after will
The correspondence back side（That is another surface of lagging edge）The oxidation weld grinding formed falls, then welds what the oxidation weld grinding fell
Surface.During the whole REPAIR WELDING of stator blade lagging edge defect, dividing plate not only needs frequently, hanging for high safety hidden danger is turned over
Operation, in order to REPAIR WELDING；Moreover, so thin stator blade lagging edge also easily occur during REPAIR WELDING undercut and
Post welding distortion, repairs and has to that by the strong type processing of pincers worker progress application requirement can be met after shaping.As can be seen here, steam turbine
The existing Welding Repair Technology of stator blade lagging edge defect has that difficulty is big, efficiency is low, quality is difficult to ensure the technical problem underlyings such as card.
The content of the invention
Technical purpose of the present utility model is：For the special of above-mentioned steam turbine stator blade lagging edge defect REPAIR WELDING
Property and not enough welded there is provided a kind of effective ground steam turbine stator blade lagging edge defect of existing Welding Repair Technology repair
Return to work dress, connect the technical difficulty of reparation to reduce, improve remediation efficiency, ensure repairing quality.
The utility model realizes its technical purpose the technical scheme adopted is that a kind of partition board of steam turbine back edge lacks
Fall into REPAIR WELDING frock, it is characterised in that the REPAIR WELDING frock includes：
- back of the body argon box, the back of the body argon box is hollow structure, inside with argon gas receiving space；The back of the body argon box be provided with
The argon filling mouthful that argon gas receiving space is communicated；The top surface of the back of the body argon box is more than the lagging edge restoring area to be welded of dividing plate blade, and
The back of the body argon box top being provided with the top surface of back of the body argon box in welding argon gas protection zone, the welding argon gas protection zone is offered
It is multiple communicated with argon gas receiving space go out argon hole；The back of the body argon box can extend on back of the body argon box top provided with least two pairs
Side securing bracket, per pair securing bracket on Screw assembly have at least one to lower feeding, for the tight of gripping diaphragm blade
Fixing bolt；
- blade liner, the blade liner is copper laminated structure, the top surface molded line of the blade liner be matched with every
Back side profile molded line of the plate leaf piece in REPAIR WELDING；The blade liner is laid on the top surface of back of the body argon box, and institute by bottom surface
State and the welding argon gas protection zone corresponding with the welding argon gas protection zone on back of the body argon box, the leaf are provided with blade liner
The logical argon hole of multiple through-hole structures is offered in the welding argon gas protection zone of piece pad.
Preferably, it is respectively equipped with the pad card bent inwards at the length direction two ends top surface of the back of the body argon box
Plate, the pad clamp bottom surface often held constitutes the pad slot for matching blade liner thickness between the top surface with carrying on the back argon box.Further
, every end liner pad clamp of the back of the body argon box is provided with the securing bracket for upwardly extending and bending deformation.Further, it is described
Securing bracket arranges that the top bending segment of the securing bracket is tight provided with assembling at the top of correspondence pad clamp in inverted L-shaped
The screwed hole of fixing bolt, the securing bracket is threadedly coupled the fastening spiral shell to lower feeding by the screwed hole on the bending segment of top
Bolt.
Preferably, the bottom of the fastening bolt is provided with copper sparkproof pad, and the fastening bolt is in clamping
Blade is contacted by the sparkproof pad of bottom during dividing plate blade.
Preferably, the logical argon hole for going out argon hole and blade liner of the back of the body argon box top is respectively with rectangular array side
Formula arrangement is molded, and the argon hole that respectively goes out of the back of the body argon box top is corresponded in each logical argon hole on blade liner.Further,
Logical argon hole aperture on the blade liner, which is less than on back of the body argon box top, goes out argon hole aperture.
Preferably, the aperture in the logical argon hole on the blade liner is 1~3mm；On the back of the body argon box top
The aperture for going out argon hole is 2~4mm.
Preferably, cable of the bottom surface provided with garter spring structure of the back of the body argon box collects snap ring.
Advantageous effects of the present utility model are：
1. the utility model is devised for the arrangement of steam turbine stator blade and the particularity of blade profile molded line
Match the support structure of stator blade lagging edge profile molded line（Carry on the back argon box and blade liner）, and the support structure can effectively,
Comprehensively, protective gas-argon gas of welding fully, is controllably sprayed；Stator blade on to partition board of steam turbine carries out welding and repaiied
When multiple, one side welding operation is carried out to stator blade lagging edge defect by the utility model, stator blade just can be made effectively
Lagging edge defect is two-sided, and reliably REPAIR WELDING is molded, and had both avoided and frequently hanging for partition board of steam turbine is turned over, and effectively dropped
Deformation that is low, even preventing stator blade REPAIR WELDING, makes the lagging edge repairing quality of welded stator blade significantly be changed
It is kind, the technical difficulty of stator blade lagging edge defect REPAIR WELDING is greatly reduced, remediation efficiency is improved, it is ensured that matter is repaired
Amount；The utility model have it is simple in construction, easy to operate, be easy to carry, security is good, stability is high, reliability is high, economy
Good and practical the features such as；
2. back of the body argon box structure of the present utility model can make back of the body argon box self structure densification, assembling can be made again thereon
Blade liner is light, easily realizes and accurately and reliably assembles, and is conducive to the technology of further reduction REPAIR WELDING operation difficult
Degree, is also conducive to further improving the operating efficiency of REPAIR WELDING；
3. fastening bolt structure of the present utility model can effectively ensure that its reliability clamped to stator blade clamping,
It can be effectively prevented from, even prevent because of clamping again and to the secondary damage caused by stator blade surface, good reliability is conducive to pair
The surface of stator blade forms good protection；
4. the cable in the utility model back of the body argon cassette bottom face collects Snap ring structure, can be linear to the cable in welding process
Management is put in order into orderly, specification, it is to avoid these cables scaling loss stator blade because of contact electricity fire, be conducive to REPAIR WELDING operation suitable
Profit is carried out.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present utility model.
Code name implication in figure：1-back of the body argon box；2-pad clamp；3-pad slot；4-go out argon hole；5-blade liner；
6-lead to argon hole；7-securing bracket；8-fastening bolt；9-sparkproof pad；10-argon filling mouthful；11-cable collects snap ring.
Embodiment
The utility model is the lagging edge defect REPAIR WELDING frock of steam turbine stator blade, and the stator blade can be monomer knot
Structure or the dividing plate blade being fixed on partition body.With reference to multiple embodiments to technology contents of the present utility model
It is described in detail.Wherein, the control of embodiment 1 accompanying drawing is described in detail, and other embodiments do not draw accompanying drawing individually but can be with
Illustrated referring generally to the accompanying drawing of embodiment 1.
Embodiment 1
Shown in Figure 1, the utility model includes back of the body argon box 1 and blade liner 5.
Wherein, back of the body argon box 1 is hollow rectangular parallelepiped structure, and it is internal with argon gas receiving space, it is generally the case that the back of the body
The exterior contour length of argon box 1 respectively may be about 120mm, 50mm and 8mm.
It is support fitting surface to carry on the back the bottom surface of argon box 1.The argon filling extended downwardly is provided with bottom surface one end end of back of the body argon box 1
Mouth 10, argon filling mouthful 10 is communicated with the argon gas receiving space on back of the body argon box 1, and for connecting argon delivery lines, i.e., argon gas is by filling
Argon mouthful 10 enters in the argon gas receiving space of back of the body argon box 1.The bottom surface other end end of back of the body argon box 1 is provided with the cable extended downwardly
Snap ring 11 is collected, the cable collects the detachable garter spring structure that snap ring 11 is mode connects for screw.
The top surface for carrying on the back argon box 1 is weld job face；The top surface area for carrying on the back argon box 1 is to be welded at least above the lagging edge of stator blade
The area of restoring area.Welding argon gas protection zone is provided with the side region of top surface one of back of the body argon box 1, i.e., the protection zone is in weldering
Be used to be passed through argon gas when connecing, thus the top surface of back of the body argon box 1 in the welding argon gas protection zone offer it is multiple go out argon hole 4, this
Go out argon hole 4 a bit and arrange in rectangular array mode to take shape in the welding argon gas protection zone of back of the body argon box 1, and these go out 4 points of argon hole
Not with the back of the body argon box 1 on argon gas receiving space communicate, each go out argon hole 4 pore diameter range be 2~4mm, such as 2mm, 3mm or
4mm etc..
The pad clamp 2 bent inwards is respectively equipped with the two ends end top surface of the length direction of back of the body argon box 1, the two linings
Pad clamp 2 is in the non-solder argon gas protection zone of the top surface of back of the body argon box 1, that is, is in the top surface of back of the body argon box 1 and is not provided with out argon hole
Overlying regions；Each pad clamp 2 can be with carrying on the back the box body integrated formed structure of argon box 1 or being set up by fastener
Structure.It is in accumbency U-shaped that the pad bottom surface of clamp 2 that the top surface of back of the body argon box 1 is often held is constituted between the corresponding top surface areas with carrying on the back argon box 1
The pad slot 3 of shape, that is to say, that the two ends pad clamp 2 of the top surface of back of the body argon box 1 is formd out at the two ends of the back of the body top surface of argon box 1
The opposite U-shape pad slot 3 of mouth, the height of each pad slot 3 should be matched with following thickness of blade liner 5, generally, often
The height of individual pad slot 3 is about 2.2mm, and two pad slots 3 of the top surface of back of the body argon box 1 are used for the following blade liner 5 of clamping.
In addition, being additionally provided with the securing bracket 7 for upwardly extending and bending deformation on the pad clamp 2 that the foregoing top surface of back of the body argon box 1 is often held, often hold
Securing bracket 7 be in inverted l-shaped structure, its top bending segment is extended to above the welding argon gas protection zone of back of the body argon box 1；Together
Manage, each securing bracket 7 can be and the corresponding knot for padding the integrated formed structure of clamp 2 or being set up by fastener
Structure.The top bending segment of each securing bracket 7 is provided with a screwed hole, in the tight of the oriented lower feeding of screwed hole screw-internal thread fit
The fastening bolt 8 to lower feeding on fixing bolt 8, securing bracket 7 is used for the welding argon gas guarantor that clamping is placed on the top surface of back of the body argon box 1
The stator blade protected in region, makes stator blade carry on the back the correspondence position stabilization of the top surface of argon box 1, reliably clamp clamping.In order to prevent
Damage is caused on the surface of the stator blade of 8 pairs of institute's clampings of fastening bolt, and the bottom terminal ends of every fastening bolt 8 are provided with sparkproof pad 9,
The sparkproof pad 9 is made of copper, i.e., in 8 clamping stator blade of fastening bolt, the sparkproof pad that fastening bolt 8 passes through bottom
The surface of 9 contact stator blades.
Blade liner 5 is the copper laminated structure being made, and the length and width of its profile, thickness respectively may be about 110mm, 50mm, 2mm.
The top surface molded line of blade liner 5 is matched with back side profile molded line of the stator blade in REPAIR WELDING, in REPAIR WELDING, is arranged in
Blade liner 5 on the stator blade welding back side is laid on the top surface of back of the body argon box 1 by the bottom surface of itself, specifically, blade liner 5
Blade liner 5 is gripped by the pad slot 3 for carrying on the back the top surface of argon box 1, the blade liner 5 gripped is used further to coordinate
The back side clamping of stator blade.Argon gas during in order to ensure REPAIR WELDING can be efficiently acted against on stator blade, likewise, blade
Also welding argon gas protection zone is provided with pad 5, and argon gas protection zone is welded with carrying on the back on argon box 1 on blade liner 5
Weld argon gas protection zone corresponding；Specifically, be provided with a side region of blade liner 5 it is multiple welding when be used for be passed through
The logical argon hole 6 of argon gas, these logical argon holes 6 are arranged on blade liner 5 in rectangular array mode, the pitch of holes of rectangular array and whole
Body arrangement Line Integral is not matched with the pitch of holes for going out argon hole 4 and overall arrangement area in the welding argon gas protection zone of back of the body argon box 1,
These logical argon holes 6 are taken shape on blade liner 5 with through-hole structure respectively, and the aperture in each logical argon hole 6 is less than on the top surface of back of the body argon box 1
The aperture for each going out argon hole 4, the pore diameter range in each logical argon hole 6 is 1~3mm, such as 1mm, 1.5mm, 2mm or 3mm, when
When blade liner 5 is laid on back of the body argon 1 top surface of box by carrying on the back the pad slot 3 of the top surface of argon box 1, each logical argon hole 6 on blade liner 5
One-to-one relationship is formed with the argon hole 4 that respectively goes out on the back of the body top surface of argon box 1, i.e., each goes out the argon gas discharged in argon hole 4 through correspondence
Logical argon hole 6 act on the back side of institute's clamping stator blade.
Above-mentioned blade liner 5 can be formed for the progress of specific stator blade profile molded line is special, can also basis
The profile molded line of different stator blades carries out molded line to same blade liner and slightly corrects and realize.
Embodiment 2
Other contents of the present embodiment are same as Example 1, and difference is：Each securing bracket is provided with three spiral shells
Pit, each screwed hole internal thread is connected with a fastening bolt.
Embodiment 3
Other contents of the present embodiment are same as Example 1, and difference is：It is four to carry on the back the securing bracket on argon box
Individual, they are one group with two, taken shape in respectively on the two ends end face of back of the body argon box, i.e., two securing brackets often held are directly from the back of the body
Upwardly extended and bending forming on the end face wall of argon box, without the pad clamp by carrying on the back argon box top.
Various embodiments above is only to illustrate the utility model, rather than its limitations.Although with reference to the various embodiments described above pair
The utility model is described in detail, it will be understood by those within the art that：It still can be to above-mentioned each reality
The concrete technical scheme applied in example is modified, or carries out equivalent substitution to which part technical characteristic；And these modification or
Person replaces, and the essence of appropriate technical solution is departed from spirit and scope of the present utility model.
Claims (9)
1. a kind of steam turbine stator blade lagging edge defect REPAIR WELDING frock, it is characterised in that the REPAIR WELDING frock includes：
- back of the body argon box（1）, the back of the body argon box（1）There is argon gas receiving space for hollow structure, inside；The back of the body argon box（1）On set
There is the argon filling mouthful communicated with argon gas receiving space（10）；The back of the body argon box（1）Top surface be more than stator blade lagging edge treat repair welding
Multiple region, and in back of the body argon box（1）Top surface be provided with back of the body argon in welding argon gas protection zone, the welding argon gas protection zone
Box（1）Top surface offer it is multiple communicated with argon gas receiving space go out argon hole（4）；The back of the body argon box（1）It is secondary provided with least two
It can extend to back of the body argon box（1）The securing bracket of top face（7）, per pair securing bracket（7）Upper Screw assembly has at least one
To lower feeding, fastening bolt for clamping stator blade（8）；
- blade liner（5）, the blade liner（5）For copper laminated structure, the blade liner（5）Top surface molded line
Back side profile molded line assigned in stator blade in REPAIR WELDING；The blade liner（5）Back of the body argon box is laid on by bottom surface（1）'s
Top surface, and the blade liner（5）On be provided with the back of the body argon box（1）On the corresponding welding argon gas in welding argon gas protection zone
Protection zone, the blade liner（5）Welding argon gas protection zone in offer the logical argon holes of multiple through-hole structures（6）.
2. steam turbine stator blade lagging edge defect REPAIR WELDING frock according to claim 1, it is characterised in that the back of the body argon
Box（1）Length direction two ends top surface at be respectively equipped with the pad clamp bent inwards（2）, the pad clamp often held（2）Bottom surface
With back of the body argon box（1）Top surface between constitute matching blade liner（5）The pad slot of thickness（3）.
3. steam turbine stator blade lagging edge defect REPAIR WELDING frock according to claim 1 or claim 2, it is characterised in that described
Carry on the back argon box（1）Every end liner pad clamp（2）Provided with the securing bracket for upwardly extending and bending deformation（7）.
4. steam turbine stator blade lagging edge defect REPAIR WELDING frock according to claim 3, it is characterised in that the fastening
Support（7）Clamp is padded in correspondence（2）Top in inverted L-shaped arrange, the securing bracket（7）Top bending segment provided with dress
With fastening bolt（8）Screwed hole, the securing bracket（7）It is threadedly coupled by the screwed hole on the bending segment of top to lower feeding
Fastening bolt（8）.
5. the steam turbine stator blade lagging edge defect REPAIR WELDING frock according to claim 1 or 4, it is characterised in that described
Fastening bolt（8）Bottom be provided with copper sparkproof pad（9）, the fastening bolt（8）Pass through bottom when clamping stator blade
Sparkproof pad（9）Contact stator blade.
6. steam turbine stator blade lagging edge defect REPAIR WELDING frock according to claim 1, it is characterised in that the back of the body argon
Box（1）Top surface goes out argon hole（4）And blade liner（5）Logical argon hole（6）Shaping is arranged in rectangular array mode respectively, and it is described
Carry on the back argon box（1）Top surface respectively goes out argon hole（4）Correspond in blade liner（5）On each logical argon hole（6）.
7. steam turbine stator blade lagging edge defect REPAIR WELDING frock according to claim 6, it is characterised in that the blade
Pad（5）On logical argon hole（6）Aperture is less than back of the body argon box（1）Go out argon hole on top surface（4）Aperture.
8. the steam turbine stator blade lagging edge defect REPAIR WELDING frock according to claim 1,6 or 7, it is characterised in that institute
State blade liner（5）On logical argon hole（6）Aperture be 1~3mm；The back of the body argon box（1）Go out argon hole on top surface（4）Aperture
For 2~4mm.
9. the steam turbine stator blade lagging edge defect REPAIR WELDING frock according to claim 1,2 or 6, it is characterised in that institute
State back of the body argon box（1）Bottom surface provided with garter spring structure cable collect snap ring（11）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621372632.1U CN206356792U (en) | 2016-12-14 | 2016-12-14 | A kind of steam turbine stator blade lagging edge defect REPAIR WELDING frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621372632.1U CN206356792U (en) | 2016-12-14 | 2016-12-14 | A kind of steam turbine stator blade lagging edge defect REPAIR WELDING frock |
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| Publication Number | Publication Date |
|---|---|
| CN206356792U true CN206356792U (en) | 2017-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621372632.1U Active CN206356792U (en) | 2016-12-14 | 2016-12-14 | A kind of steam turbine stator blade lagging edge defect REPAIR WELDING frock |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108672961A (en) * | 2018-05-17 | 2018-10-19 | 江苏理工学院 | A kind of multi-functional frock clamp of blade class irregular surface thin-wall part laser remanufacturing |
-
2016
- 2016-12-14 CN CN201621372632.1U patent/CN206356792U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108672961A (en) * | 2018-05-17 | 2018-10-19 | 江苏理工学院 | A kind of multi-functional frock clamp of blade class irregular surface thin-wall part laser remanufacturing |
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