CN105448499A - Large transformer body compression device and compression technology - Google Patents
Large transformer body compression device and compression technology Download PDFInfo
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- CN105448499A CN105448499A CN201510934715.9A CN201510934715A CN105448499A CN 105448499 A CN105448499 A CN 105448499A CN 201510934715 A CN201510934715 A CN 201510934715A CN 105448499 A CN105448499 A CN 105448499A
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- screw rod
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Abstract
The invention discloses a large transformer body compression device and compression technology, and relates to the technical field of transformers. The large transformer body compression device comprises a pulling plate connection structure, pull stripe structures and press nail structures, wherein the press nail structures are separately arranged at the left side and the right side of a transformer body and the front side and the rear side of the transformer body; each press nail structure comprises a screw rod, a compression nut, a support sleeve and a spring; each spring is arranged in each support sleeve; a polish rod is arranged at one end of each screw rod, is arranged on the spring in each support sleeve, and can be in sliding fit with each support sleeve; a locking nut is arranged on each screw rod; and an air hole is formed in the side wall of each support sleeve. According to the large transformer body compression device and compression technology, the compression degree of the transformer body can be improved, so that safe operation of an overall power grid is improved.
Description
Technical field
The present invention relates to transformer technology field, specifically a kind of Hold Down Gag of Active Part of Large Transformer and pressing process.
Background technology
Transformer is part important in electric power system, the normal operation of the reliability direct relation electrical network of transformer, and the compression degree of transformer body decides the ability that transformer can bear short circuit in a short-circuit situation, at present, because the design of device body compressing structure is unreasonable, device body pressing process is lack of standardization and the transformer anti-short circuit capability that causes declines and the example that damages transformer happens occasionally.Therefore, for the accident of existing transformer in compression is unreliable, to compressing structure and the constantly improvement of pressing process needs of transformer body, effectively could ensure the assembly quality of whole transformer body, also could improve the anti-short circuit capability of transformer to greatest extent, and then ensure the safe operation of whole electrical network.
The compressing structure of current transformer body exists that iron core clamping is unreliable, device body compresses that compressing structure in insecure, core window is unreasonable, the problems such as cushion block easily loosens in core window.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of Hold Down Gag of Active Part of Large Transformer and pressing process, can improve the compression degree of device body, and then improve the safe operation of whole electrical network.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of Hold Down Gag of Active Part of Large Transformer, comprises arm-tie syndeton and pulling belt structure, also comprises nail pressing structure, and nail pressing structure is divided into both sides before and after the device body left and right sides and device body; Nail pressing structure comprises screw rod, clamp nut, support set and spring, and spring is placed in support set, and one end of screw rod is polished rod, this polished rod is placed in above the spring in support set, and can be slidably matched with support set, screw rod is provided with locking nut, and the sidewall of support set is provided with pore.
Further technical scheme, the sidewall of support set is also provided with lateral threaded holes, is combined with the lock-screw for clenching screw rod in lateral threaded holes.
Further technical scheme, the lower end of support set is provided with the shoulder that external diameter is greater than support set outer wall.
Further technical scheme, screw rod and polished rod are Split type structure, and screw rod is threaded with polished rod, and on screw rod, the below of clamp nut is also provided with locking nut.
Further technical scheme, the nail pressing structure that A phase arranges six nail pressing structures, B phase is arranged of transformer is 4, and the nail pressing structure that C phase is arranged is 6.
Further technical scheme, pulling belt structure divide be located at upper yoke top, in core window, folder from top to bottom both sides and lower yoke bottom, the steel drawstring that drawstring wherein adopts high strength steel to make.
A kind of high-power transformer device body pressing process, comprises the following steps:
One, support set put into by spring, extend in support set by the polished rod of screw rod lower end, makes lower surface and the spring contact of screw rod, and screw rod upper end screws in the screw of folder, then clamp nut is screwed into screw rod; For the structure of polished rod and screw rod split, spring is put into support set, and support set put into by polished rod, and locking nut screws in screw rod, and then screw rod is through the screw of folder, then clamp nut is screwed into;
Two, slim jack is placed on the otch place that folder pre-sets, every phase bilateral symmetry arranges slim jack and quantity is identical;
Three, primer fluid press pump, with jack by folder back-pressure winding pressing plate, take out the lock-screw of support set sidewall, and then symmetrically screw each clamp nut, each clamp nut adjustment screws, locking nut is locked to folder simultaneously, in lock-screw precession lateral threaded holes, make the tip of lock-screw mark closely on polished rod wall;
Four, cushion block is put between upper yoke lower surface and pressing plate, then with adjusting pressboard padding consolidation.
The beneficial effect adopting technique scheme to produce is: the present invention compresses position and the layout of point by adjustment, makes iron core clamp location layout compacter, better can clamp iron core, improve the compression degree of whole device body; By nail pressing structure, each compression point is compressed simultaneously.
Accompanying drawing explanation
Fig. 1 is complete layout of the present invention;
Fig. 2 is the structural representation of nail pressing constructive embodiment one of the present invention;
Fig. 3 is the structural representation of nail pressing constructive embodiment two of the present invention;
In figure: 1, nail pressing structure; 2, pulling belt structure; 3, folder; 4, iron core; 5, polished rod; 6, lock-screw; 7, pore; 8, spring; 9, support set; 10, shoulder; 11, locking nut; 12, clamp nut; 13, screw rod.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
High-power transformer device body pressing system is made up of folder from top to bottom, steel drawstring, arm-tie, nail pressing, nail pressing seat, inverse-locking nut screw etc., and wherein, it is overall that folder from top to bottom, steel drawstring, arm-tie form an effective steel.
The version that compressing structure adopts surrounding nail pressing to be connected with upper lower pulling plate, arm-tie syndeton connects folder from top to bottom, device body is made to become an overall steel body, pulling belt structure 2 makes its silicon steel sheet in device body compaction process not be shifted up and down for stationary transformer iron core, and nail pressing structure is used for compactor body.
The effect of arm-tie syndeton is folder from top to bottom to couple together the steel body that formation one is firm, plays support and the effect of clamping when device body compresses.Therefore must first the securing member that upper lower pulling plate is connected with folder be carried out fastening reliably before device body compresses.At arm-tie longitudinal grooved, flux leakage is reduced, thus reduce eddy current loss.
The present invention is the improvement to existing Hold Down Gag of Active Part of Large Transformer, the technical scheme taked is as follows: shown in Figure 2, comprise arm-tie syndeton and pulling belt structure 2, also comprise nail pressing structure 1, nail pressing structure 1 is divided into both sides before and after the device body left and right sides and device body; Nail pressing structure 1 comprises screw rod 13, clamp nut 12, support set 9 and spring 8, spring 8 is placed in support set 9, one end of screw rod 13 is polished rod 5, this polished rod 5 is placed in above the spring 8 in support set 9, and can be slidably matched with support set 9, screw rod 13 is provided with locking nut 11, and the sidewall of support set 9 is provided with pore 7.The setting of spring 8 is beneficial to compactor body, and the setting of pore 7 is that the air pressure moment in compaction process in support set 9 and the external world are consistent, and avoids the air of the inside to be compressed to polished rod 5 to a certain degree and can not press down and problem that device body does not press tightly.Wherein, pore 7 can circumferential uniform 1-4, and also can layering arrange, the gas be convenient to like this in support set 9 is discharged in time, avoids occurring that problem not in place pressed by polished rod 5, and the effect that impact compresses.
The sidewall of support set 9 is also provided with lateral threaded holes, is combined with the lock-screw 6 for clenching screw rod 13 in lateral threaded holes.The effect of the setting of lock-screw 6 is: screw rod 13 and support set 9 are coupled together, can on the symmetrical two side of polished rod 5, vertically bore a row blind hole, or the hole of roundlet point-type, the tip of lock-screw 6 can be screwed in blind hole, screw rod 13 and support set 9 are connected as a single entity, be easy to carry like this and take, avoid each parts scattered, and easily omit, when seated, first lock-screw 6 to inner rotary, make lock-screw 6 depart from polished rod 5 to be convenient to polished rod 5 and to press down, and simultaneously because lock-screw 6 and support set 9 are for being threaded, so it also avoid the problem dropped when mounted, simultaneously when compactor after one's death, lock-screw 6 can be screwed in support set 9 to clenching with polished rod 5 again, also the effect of locking positioning polished rod 5 is played, make the compression of device body more reliable.
The lower end of support set 9 is provided with the shoulder 10 that external diameter is greater than support set 9 outer wall.The setting of shoulder 10 makes support more firm and stable, further improves the effect compressed.
Shown in Figure 3, screw rod 13 and polished rod 5 are Split type structure, and screw rod 13 is threaded with polished rod 5, and on screw rod 13, the below of clamp nut 12 is also provided with locking nut 11.The structure of split, also use is more flexible, makes easily, is also convenient to dismounting simultaneously, also further can arranges nut in the both sides up and down of folder 3, further improve the compression effect of device body.
Shown in Figure 1, the nail pressing structure 1 that A phase arranges six nail pressing structures 1, B phase is arranged of transformer is 4, and the nail pressing structure 1 that C phase is arranged is 6.Add the some position of compression in the present invention, and some position is arranged symmetrically, can ensure effectively to be compressed in transformer body both sides and between upper yoke and pressing plate, make transformer whole uniform stressed, improve stability, meanwhile, more effectively defend short-circuit force when the short circuit of device body.。Pressing plate adopts the version of every overall pressing plate mutually, and on each pressing plate, fluting is convenient to correcting wedge installation.Wedge shape interworking epoxy resin bonded fiber is installed additional to increase the degree of packing of iron core 4 the window's position between upper yoke and pressing plate.
Pulling belt structure 2 points is located at upper yoke top, in iron core 4 window, folder from top to bottom 3 both sides and lower yoke bottom, the steel drawstring that drawstring wherein adopts high strength steel to make, makes whole device body reliable and stable.
The pressing process of this transformer body is:
(1) dried device body is winched to specify place, suck device dust with it and foreign matter with dust catcher, then with clean one time of hair-dryer.(2) carry out fastening to lower yoke unshakable in one's determination on platform, order is arm-tie axle sleeve, lower yoke upper and lower end face drawstring, other drawstring.
(3) whether inspection insulating part, wooden piece have damage, and damage in insulation should mend bag.
(4) with clean cloth, the space of upper yoke top, lower yoke and lower oil tank and the upper end that goes between all are covered in, in case foreign matter falls into device body inside and lower yoke bottom.
(5) put the insulation on positive drawstring, successively fastening arm-tie axle sleeve, upper yoke upper and lower end face drawstring, other drawstring, all bolt and nuts all should be locked, and are coated with thread locking agent during locking.
(6) arrange upper and lower core insulation, iron yoke cushion block and coil cushion block, each cushion block is alignd in the axial direction, and upper lower deviation meets the requirements.
(7) sufficient coil axial height is padded.Cardboard, cushion block that preliminary drying is crossed, increase pad at coil upper end, inner-outer coil effectively can be compressed, avoid because inner-outer coil insulation shrinkage amount difference in dry run causes axial difference in height.
(8) support set 9 put into by spring, extend in support set 9 by the polished rod 5 of screw rod 13 lower end, and the lower surface of screw rod 13 is contacted with spring 8, and screw rod 13 upper end screws in the screw of folder 3, then clamp nut 12 is screwed into screw rod 13; For the structure of polished rod 5 with screw rod 13 split, spring 8 is put into support set 9, and support set 9 put into by polished rod 5, and locking nut 11 screws in screw rod 13, and then screw rod 13 is through the screw of folder 3, then clamp nut 12 is screwed into;
(9) slim jack is placed on the otch place that folder 3 pre-sets, every phase bilateral symmetry arranges slim jack and quantity is identical, places temporary support plate make jack be in stressed position placed in the middle in each jack bottom; Primer fluid press pump, with jack by upper clamping piece 3 back-pressure winding pressing plate;
(10) primer fluid press pump, folder 3 is increased with the spacing of pressing plate, notes the stroke of jack, exceed after stroke then needs to add temporary cushion block support and discharge jack, below jack, cushioning temporary support plate continues to compress, until be forced into required pressure again;
(11) lock-screw 6 of support set 9 sidewall is taken out, and then symmetrically screw each clamp nut 12, each clamp nut 12 adjustment screws, locking nut 11 is locked to upper clamping piece 3 simultaneously, in lock-screw 6 precession lateral threaded holes, make the tip of lock-screw 6, adjustment nail pressing makes nail pressing bolt align with nail pressing seat center, and diagonal angle symmetry tightens nail pressing.Cushion block is put between upper yoke lower surface and pressing plate, then with adjusting pressboard padding consolidation; (12) discharge hydraulic jack, other two-phase compresses in the same way;
Add the use of slim jack, the use of this technological equipment considerably increases compression efficiency, and also obviously increase and compress effect, the cushion block simultaneously between upper yoke lower surface and pressing plate is put into and is also more prone to, and compresses also consolidation more.
Adopt slim jack, because slim jack is separated type hydraulic jack, volume is little, larger ability to work can be produced, particularly narrow in locus place uses, and has light and flexible, function that top power is large, can increase the effect of compression, cushion block simultaneously between upper yoke lower surface and pressing plate is more easily put into, and compresses also consolidation more.
Claims (7)
1. a Hold Down Gag of Active Part of Large Transformer, comprise arm-tie syndeton and pulling belt structure (2), it is characterized in that, also comprise nail pressing structure (1), nail pressing structure (1) is divided into both sides before and after the device body left and right sides and device body; Nail pressing structure (1) comprises screw rod (13), clamp nut (12), support set (9) and spring (8), spring (8) is placed in support set (9), one end of screw rod (13) is polished rod (5), this polished rod (5) is placed in above the spring (8) in support set (9), and can be slidably matched with support set (9), screw rod (13) is provided with locking nut (11), and the sidewall of support set (9) is provided with pore (7).
2. Hold Down Gag of Active Part of Large Transformer according to claim 1, is characterized in that, the sidewall of support set (9) is also provided with lateral threaded holes, is combined with the lock-screw (6) for clenching screw rod (13) in lateral threaded holes.
3. Hold Down Gag of Active Part of Large Transformer according to claim 1, is characterized in that, the lower end of support set (9) is provided with the shoulder (10) that external diameter is greater than support set (9) outer wall.
4. Hold Down Gag of Active Part of Large Transformer according to claim 1, it is characterized in that, screw rod (13) and polished rod (5) are Split type structure, and screw rod (13) is threaded with polished rod (5), are also provided with locking nut (11) in the below of the upper clamp nut (12) of screw rod (13).
5. Hold Down Gag of Active Part of Large Transformer according to claim 1, is characterized in that, the A phase of transformer arranges that the nail pressing structure (1) that six nail pressing structures (1), B phases are arranged is 4, and the nail pressing structure (1) that C phase is arranged is 6.
6. Hold Down Gag of Active Part of Large Transformer according to claim 1, it is characterized in that, pulling belt structure (2) point to be located in upper yoke top, iron core (4) window, folder from top to bottom both sides and lower yoke bottom, the steel drawstring that drawstring wherein adopts high strength steel to make.
7. a high-power transformer device body pressing process, is characterized in that, comprise the following steps:
One, support set (9) put into by spring (8), the polished rod (5) of screw rod (13) lower end is extend in support set (9), the lower surface of screw rod (13) is contacted with spring (8), screw rod (13) upper end screws in the screw of folder, then clamp nut (12) is screwed into screw rod (13); For the structure of polished rod (5) with screw rod (13) split, spring (8) is put into support set (9), and support set (9) put into by polished rod (5), and locking nut (11) screws in screw rod (13), then screw rod (13) is through the screw of folder, then clamp nut (12) is screwed into;
Two, slim jack is placed on the otch place that folder (3) pre-sets, every phase bilateral symmetry arranges slim jack and quantity is identical;
Three, primer fluid press pump, with jack by folder (3) back-pressure winding pressing plate, take out the lock-screw (6) of support set (9) sidewall, and then symmetrically screw each clamp nut (12), each clamp nut (12) adjustment screws, locking nut (11) is locked to folder (3) simultaneously, in lock-screw (6) precession lateral threaded holes, make the tip of lock-screw (6) mark closely on polished rod (5) wall;
Four, cushion block is put between upper yoke lower surface and pressing plate, then with adjusting pressboard padding consolidation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510934715.9A CN105448499A (en) | 2015-12-15 | 2015-12-15 | Large transformer body compression device and compression technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510934715.9A CN105448499A (en) | 2015-12-15 | 2015-12-15 | Large transformer body compression device and compression technology |
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| Publication Number | Publication Date |
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| CN105448499A true CN105448499A (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510934715.9A Pending CN105448499A (en) | 2015-12-15 | 2015-12-15 | Large transformer body compression device and compression technology |
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| CN2935409Y (en) * | 2006-07-31 | 2007-08-15 | 特变电工衡阳变压器有限公司 | Compressing apparatus for body of transformer or reactor |
| CN101339842A (en) * | 2008-05-07 | 2009-01-07 | 正泰电气股份有限公司 | Method for preventing rebound of coil when iron core sheet inserting |
| CN101477888A (en) * | 2008-09-16 | 2009-07-08 | 卧龙电气集团股份有限公司 | Body pressing device of transformer |
| CN201278299Y (en) * | 2008-09-16 | 2009-07-22 | 卧龙电气集团股份有限公司 | Body pressing device of transformer |
| CN202384152U (en) * | 2011-12-29 | 2012-08-15 | 广东广特电气有限公司 | Compressing structure of transformer body |
| CN102723179A (en) * | 2012-07-12 | 2012-10-10 | 山东华驰变压器股份有限公司 | Transformer clamp unit |
| CN102903476A (en) * | 2012-10-18 | 2013-01-30 | 西电济南变压器股份有限公司 | Novel elastic device body compacting device |
| CN202930175U (en) * | 2012-10-29 | 2013-05-08 | 无锡市联达电器有限公司 | Transformer elastic pressing nail |
-
2015
- 2015-12-15 CN CN201510934715.9A patent/CN105448499A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2935409Y (en) * | 2006-07-31 | 2007-08-15 | 特变电工衡阳变压器有限公司 | Compressing apparatus for body of transformer or reactor |
| CN101339842A (en) * | 2008-05-07 | 2009-01-07 | 正泰电气股份有限公司 | Method for preventing rebound of coil when iron core sheet inserting |
| CN101477888A (en) * | 2008-09-16 | 2009-07-08 | 卧龙电气集团股份有限公司 | Body pressing device of transformer |
| CN201278299Y (en) * | 2008-09-16 | 2009-07-22 | 卧龙电气集团股份有限公司 | Body pressing device of transformer |
| CN202384152U (en) * | 2011-12-29 | 2012-08-15 | 广东广特电气有限公司 | Compressing structure of transformer body |
| CN102723179A (en) * | 2012-07-12 | 2012-10-10 | 山东华驰变压器股份有限公司 | Transformer clamp unit |
| CN102903476A (en) * | 2012-10-18 | 2013-01-30 | 西电济南变压器股份有限公司 | Novel elastic device body compacting device |
| CN202930175U (en) * | 2012-10-29 | 2013-05-08 | 无锡市联达电器有限公司 | Transformer elastic pressing nail |
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Application publication date: 20160330 |
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