CN114005673B - Oil immersed transformer winding integrated with optical fiber deformation sensor, mounting process and system - Google Patents
Oil immersed transformer winding integrated with optical fiber deformation sensor, mounting process and system Download PDFInfo
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- CN114005673B CN114005673B CN202111443184.5A CN202111443184A CN114005673B CN 114005673 B CN114005673 B CN 114005673B CN 202111443184 A CN202111443184 A CN 202111443184A CN 114005673 B CN114005673 B CN 114005673B
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 126
- 238000004804 winding Methods 0.000 title claims abstract description 113
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 133
- 238000003860 storage Methods 0.000 claims description 203
- 238000007493 shaping process Methods 0.000 claims description 63
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- 239000002131 composite material Substances 0.000 claims description 24
- 239000003973 paint Substances 0.000 claims description 21
- 238000004146 energy storage Methods 0.000 claims description 16
- 229910052802 copper Inorganic materials 0.000 claims description 14
- 239000010949 copper Substances 0.000 claims description 14
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- 230000001502 supplementing effect Effects 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 12
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/06—Coil winding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
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- Engineering & Computer Science (AREA)
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Abstract
The invention relates to an oil immersed transformer winding of an integrated optical fiber deformation sensor, an installation process and a system, which execute the following steps that S1, an optical fiber sensor is arranged at the outer side of each wire cake of the winding, wherein the length of a head end optical fiber sensor is reserved according to the wire outlet position of the transformer, and the reserved optical fiber sensor is coiled into a circular ring; then, in the winding process of the winding, at least the copper wire at the outermost layer and the optical fiber sensor are fixed by dispensing at a plurality of PVA dispensing positions; s2, arranging the optical fiber sensor in parallel in the middle of the surface of the copper wire, and bonding or binding the optical fiber sensor with the copper wire by using crepe paper; s3, winding the end of the optical fiber sensor into a circular ring after winding, and binding the end of the winding. The invention has reasonable design, compact structure and convenient use.
Description
Technical Field
The invention relates to an oil immersed transformer winding integrated with an optical fiber deformation sensor, an installation process and an installation system, and belongs to the technical field of power transformers.
Background
In a power system, an oil-immersed transformer is used as one of main equipment of the power system, and the operation reliability of the oil-immersed transformer is directly related to whether a power grid system can safely operate.
With the increasing capacity of the power grid, the damage accident of the transformer caused by the short circuit fault is in an ascending trend. The statistics of the national grid company show that the voltage class transformers of 110kV and above in the national grid in 2002-2006 have 162 accidents, wherein the damage accident rate caused by external short circuit is 36.4%. When the transformer suffers short-circuit impact in operation, permanent instability deformation such as winding distortion, inclination, collapse, bulge and displacement can be generated by the winding under the action of electrodynamic force. As the deformation is not found in time, the accumulated effect can further aggravate the deformation, thereby causing insulation damage and faults such as turn-to-turn short circuit, inter-cake breakdown, main insulation discharge or complete breakdown.
In the short-circuit state, the power transformer has a short-circuit current which is tens times larger than the normal operation in the winding, and generates huge electromagnetic force which comprises radial force, axial force and circumferential force. When the winding has insufficient short-circuit resistance, the electromagnetic force may damage the winding. After the transformer winding is deformed, some damage accidents can happen immediately, and more, the transformer winding can still continue to operate for a period of time. The main forms of short circuit damage of transformers include:
(1) Radial destabilization of windings
Radial destabilization means that all wires of the entire wire cake are protruded outwardly within a certain stay pitch in the circumferential direction of the winding, or all wires of the entire wire cake are recessed inwardly within an adjacent stay pitch, or both deformations exist simultaneously. This local deformation is not only asymmetrical in the circumferential direction, but not necessarily all the wire cakes over the axial height of the winding.
(2) Axial instability of windings
Some wire cakes of the winding are generally inclined to collapse under the combined action of axial dynamic short-circuit force and radial short-circuit force, and are called axial instability of the winding. Axial instability is the primary failure mode of windings that are subjected to both axial dynamic and radial shorting forces (whether radial tensile or radial compressive).
The short circuit current interacts with the radial leakage component to generate an axial dynamic short circuit force. If the axial precompaction force of the winding is smaller than the axial dynamic short-circuit force, under the action of the axial short-circuit force, gaps are formed between wire cakes and wire cakes, between wire cakes and cushion blocks and between cushion blocks at certain parts of the winding (such as winding end parts with larger radial magnetic flux leakage components and voltage regulating tapping areas); when the short-circuit current passes through zero, the gaps of all the parts disappear. The repeated appearance and disappearance of the gap in the short circuit process inevitably causes the violent collision between the wire cakes, the wire cakes and the cushion blocks and between the cushion blocks. As a result of such a severe collision, not only insulation breakage of the turns of the wire is caused, but also inter-turn short-circuit is formed, and the spacer is loosened and shifted and the wire is inclined and collapsed due to the combined action of radial short-circuit forces. If the axial pre-compression force of the winding is too large, the lead wire is easy to incline and collapse. In addition, the greater the ratio of axial height to radial width of a single wire, the more likely the wire will collapse.
In order to discover the winding deformation of the transformer on line in time, problems are discovered in advance, effective preventive measures are taken in time, the accident of the transformer is reduced, the service life of the transformer is prolonged, the winding deformation of the transformer in operation can be monitored in real time by installing the optical fiber winding deformation sensor on the oil-immersed transformer, the winding deformation of the transformer in different degrees can be discovered in time, and the operation reliability of the oil-immersed transformer is improved.
Disclosure of Invention
The invention aims to solve the technical problems of providing an oil immersed transformer winding, an installation process and a system of an integrated optical fiber deformation sensor, which can ensure that a distributed optical fiber strain sensor is tightly attached to the whole winding, ensure that the distributed optical fiber strain sensor and the winding deform synchronously, discover the winding deformation of the transformer in different degrees in time, and improve the operation reliability of the oil immersed transformer.
In order to solve the problems, the invention adopts the following technical scheme:
the installation process of the oil immersed transformer winding of the integrated optical fiber deformation sensor comprises the following steps of S1, firstly, arranging an optical fiber sensor on the outer side of each wire cake of the winding, wherein the length of a head end optical fiber sensor is reserved according to the wire outlet position of the transformer, and coiling the reserved optical fiber sensor into a circular ring; then, in the winding process of the winding, at least the copper wire at the outermost layer and the optical fiber sensor are fixed by dispensing at a plurality of PVA dispensing positions;
s2, arranging the optical fiber sensor in parallel in the middle of the surface of the copper wire, and bonding or binding the optical fiber sensor with the copper wire by using crepe paper;
s3, winding the end of the optical fiber sensor into a circular ring after winding, and binding the end of the winding.
An oil immersed transformer winding integrated with an optical fiber deformation sensor is used for being wound on a winding frame with a winding frame lead wire opening; the copper wire is provided with lead heads at two ends, wherein the lead heads are led out from corresponding lead openings of the winding frame; at least the middle part of the copper wire of the outermost layer wound by the winding frame is adhered with an optical fiber sensor; a crepe paper is arranged outside the optical fiber sensor,
at least the copper wire of the outermost layer is fixed with the optical fiber sensor through dispensing at a plurality of PVA dispensing positions.
As a further improvement of the above technical scheme:
the copper wire is arranged on the winding frame by adopting a cake-type winding;
copper wires are wound on the winding frame in a single layer or multiple layers.
The installation system of the oil immersed transformer winding of the integrated optical fiber deformation sensor comprises a loading storage device, a loading storage device and a loading storage device, wherein the loading storage device is used for loading outsourcing hollow copper wires;
the feeding mechanical arm comprises a feeding mechanical arm head with multi-axis control, wherein two or three feeding mechanical fingers are circumferentially distributed at the lower end of the feeding mechanical arm head, and the feeding mechanical fingers have radial and axial states;
a feeding power central shaft for transmitting rotary power is arranged in the inner cavity of the feeding manipulator head, a feeding fixing seat is rotatably arranged on the feeding power central shaft through a bearing, and the feeding fixing seat is arranged on the feeding manipulator head;
a feeding rotary bevel gear is arranged at the lower end of the feeding power central shaft;
the feeding mechanical finger comprises a feeding oblique support shaft which is obliquely arranged on the feeding mechanical finger at 45 degrees, a feeding oblique cross gear meshed with the feeding rotary bevel gear is sleeved on the feeding oblique support shaft, and a feeding rotary finger is arranged at the lower part of the feeding oblique cross gear; the included angle between the axial lead of the feeding rotating finger and the feeding oblique support shaft is 90 degrees or 135 degrees.
As a further improvement of the above technical scheme:
a storage rotating frame is rotatably arranged at the end of the travel of the feeding manipulator; the storage rotating frame is arranged in a hollow manner in the center, and a space for accommodating the swing reset of the feeding rotating finger is formed in the inner cavity at the lower part of the storage rotating frame; a storage disc line bearing table is coaxially arranged on the storage rotating frame; the inner ring of the storage disc line bearing table is provided with a storage support inner side wall, and storage indexing openings are axially and circumferentially equally distributed on the storage support inner side wall so that feeding mechanical fingers enter and descend; a storage process slot communicated with the storage graduation notch is arranged on the storage disc line bearing table;
the storage support is arranged in the through inner cavity of the inner side wall and is used for passing through the feeding manipulator head;
a plurality of storage radial guide grooves are distributed on the storage disc line bearing table, and storage guide racks are arranged on the side parts of the storage radial guide grooves in parallel;
at least three storage eccentric contact press rollers are circumferentially distributed on the outer side of the storage disc line bearing table, and a storage traveling gear shaft and a storage traveling guide seat are respectively arranged at the lower end of each storage eccentric contact press roller;
the storage walking gear shaft is used for being meshed with the storage guide rack;
the storage walking guide seat is used for walking in the storage radial guide groove;
a storage output station is arranged between two adjacent storage eccentric contact press rollers, a storage side swing output guide plate is fixedly arranged on the side part of the station, and the storage side swing output guide plate and the storage disc line bearing table are arranged in a split mode; the storage side swing output guide plate is hinged on a corresponding rack on the outer side of the storage rotating frame in a swing mode, and a storage reset spring seat is arranged on the rack so as to be hinged with the back face of the storage side swing output guide plate; the end head of the storage side swing output guide plate is contacted with the outer side wall of the coiled copper wire;
a storage lower shaft seat is arranged at the lower end of the storage walking guide seat, a storage energy storage spring and a storage spring fork head are arranged on the storage disc wire bearing table, and the storage energy storage spring is connected with the storage lower shaft seat so as to enable the storage eccentric contact press roller to radially move, and the storage eccentric contact press roller rotates in the moving process so as to enable fluff on the storage eccentric contact press roller to be in contact with a copper wire; the storage spring fork head is used for inserting the storage energy storage spring so as to block the reset traction of the storage energy storage spring.
The copper wire is single-stranded, and the cross section of the copper wire is rectangular or circular;
the shaping device comprises a plurality of linearly arranged shaping output paired rollers for linearly outputting the copper wire, and at least shaping cleaning brushes for cleaning the copper wire, shaping side paint brushing rollers for painting two side parts of the copper wire, shaping end paint brushing parts for painting upper and lower end parts of the copper wire, shaping drying parts for drying the surface paint of the copper wire and shaping output parts for outputting the copper wire to the next station are sequentially distributed on a shaping output paired roller conveying line.
The shaping output part is connected with a composite device which comprises a composite conveying pair roller and is used for forwarding the copper wire, and a composite lower supporting step is arranged at the lower part of a composite conveying pair roller channel so as to realize positioning and lifting of the lower side part of the copper wire;
an optical fiber feeding station of an optical fiber positioning carrier is arranged on the composite conveying pair roller, an optical fiber feeding pair roller set is arranged on the side part of the optical fiber feeding station, the optical fiber sensor is used for feeding the optical fiber sensor into an optical fiber feeding station, and is lifted and positioned by an optical fiber positioning carrier, and a corresponding straight column side roller and a side roller with a middle groove are arranged at the front side of the optical fiber feeding station; the optical fiber positioning carrier is positioned in the middle of the front side surface of the copper wire;
the straight column side roller is used for contacting with the back side surface of the copper wire, and the side roller with the middle groove is used for rolling contact with the front side surface of the copper wire and the optical fiber sensor, wherein the optical fiber sensor is positioned in the middle groove of the side roller with the middle groove;
a dispensing operation part, a glue supplementing part and a paper packaging part are sequentially arranged on a conveying line of the straight column side roller and the side roller with the middle groove;
a dispensing machine is arranged at the dispensing operation part and is used for dispensing and fixing the copper wire and the optical fiber sensor through a plurality of PVA dispensing positions;
the glue supplementing part is used for carrying out secondary glue supplementing on the opening and closing part of the PVA glue dispensing part;
a paper feeding pair roller set is arranged outside the paper packaging part, a glue spreader is arranged at the side part of the paper feeding pair roller set, and a forming side pressing roller is arranged at the output side of the paper feeding pair roller set;
the paper feeding pair roller set is used for feeding the crepe paper into the paper packaging part to be adhered to the front surface of the copper wire, the gumming machine is used for gumming the adhesive surface of the crepe paper, and the forming side pressing roller is used for forming and rolling the copper wire after the crepe paper is compounded.
An installation process of an oil immersed transformer winding of an integrated optical fiber deformation sensor is carried out by executing the following steps,
firstly, outsourcing coiled copper wires; then, the feeding manipulator head descends, and feeding mechanical fingers which are axially distributed are inserted into the central hole of the coiled copper wire; then, the feeding power central shaft drives the feeding rotary bevel gear to rotate, and the feeding oblique crossing gear is made to rotate, so that the feeding rotary finger swings upwards to hook the coiled copper wire central hole and lift the coiled copper wire central hole;
firstly, a feeding manipulator head comes into a storage rotating frame and enters an inner cavity of the inner side wall of a storage support; then, a feeding mechanical finger advances along the storage division opening and the storage process slotting, and the copper wire is sleeved on the inner side wall of the storage support; secondly, the feeding power central shaft drives the feeding rotary finger to swing back to an axial state and move reversely to be separated from the copper wire;
step three, firstly, loosening a storage spring fork head by a manipulator or a worker, loosening a storage energy storage spring, radially walking a storage walking guide seat towards the center along a storage radial guide groove, and simultaneously, meshing and rotating a storage walking gear shaft and a storage guide rack to ensure that a storage eccentric contact press roller is in pressure contact with the outer side wall of a coiled copper wire and continuously moves towards the center along with the shrinkage of the coiled copper wire; then, the storage rotating frame rotates, so that the copper wire ends are guided and output through the copper wires, and the storage rotating frame swings to be in contact with the outer side wall of the copper wires as the coiled copper wires shrink.
As a further improvement of the above technical scheme:
step four, firstly, outputting and straightening the output copper wire through a shaping output pair roller; then, cleaning the copper wire by using a shaping cleaning brush; secondly, painting the two side parts of the copper wire by a shaping side paint roller or a paint spraying part; thirdly, painting the upper end and the lower end of the copper wire by a shaping end painting part; then, the shaping and drying part dries the surface paint of the copper wire and outputs the paint to the next station through the shaping output part;
step five, firstly, outputting the end head of the optical fiber sensor to a reserved length through a shaping output part in advance by an optical fiber feeding pair roller set; then, the copper wire is forwarded by the composite conveying pair roller; secondly, at an optical fiber feeding station, an optical fiber sensor is bonded with the front surface of the copper wire and moves forwards, the optical fiber sensor is positioned and driven to move forwards through an optical fiber positioning carrier and a groove with a middle groove side roller, and the lower side part of the copper wire is positioned and lifted through a composite lower supporting step; thirdly, the roller is driven by the side roller with the middle groove to move forward to reach the roller; then, the dispensing operation part performs dispensing treatment on the optical fiber sensor and the copper wire and air-dries the optical fiber sensor and the copper wire; then, in the glue supplementing part, glue is secondarily supplemented to the unqualified positions of the optical fiber sensor and the copper wire;
step six, firstly, feeding the paper into a pair of roller sets to send the crepe paper into a paper packaging part to be bonded with the front surface of the copper wire; then, the glue spreader glues the bonding surface of the crepe paper; secondly, the copper wire after the compound crepe paper is formed and rolled by a forming side pressing roller.
The invention has reasonable design, low cost, firmness, durability, safety, reliability, simple operation, time and labor saving, fund saving, compact structure and convenient use. In order to discover the winding deformation of the transformer on line in time, problems are discovered in advance, effective preventive measures are taken in time, the accident of the transformer is reduced, the service life of the transformer is prolonged, the winding deformation of the transformer in operation can be monitored in real time by installing the optical fiber winding deformation sensor on the oil-immersed transformer, the winding deformation of the transformer in different degrees can be discovered in time, and the operation reliability of the oil-immersed transformer is improved. The process can ensure that the distributed optical fiber strain sensor is tightly attached to the whole winding, ensure that the distributed optical fiber strain sensor and the winding deform synchronously, discover the deformation of the winding of the transformer at different degrees in time, and improve the operation reliability of the oil immersed transformer.
Drawings
Fig. 1 is a schematic view of a winding structure of the present invention, in which 8 wires are wound in parallel.
Fig. 2 is a schematic view of the adhesive dispensing structure of PVA for the optical fiber sensor and the outermost layer of the lead wire according to the present invention.
FIG. 3 is a schematic view of the present invention at a shift position.
Fig. 4 is a schematic diagram of the explosive structure of a single guide winding of the present invention.
Fig. 5 is a schematic diagram of a wire mounting and use structure of the present invention.
Fig. 6 is a schematic diagram of a feeding structure of the present invention.
Fig. 7 is a schematic view of the storage structure of the present invention.
Fig. 8 is a schematic diagram of the shaping structure of the present invention.
FIG. 9 is a schematic diagram of the synthetic usage structure of the present invention.
Wherein: 1. a winding frame; 2. a winding frame lead opening; 3. a copper wire; 4. a lead; 5. an optical fiber sensor; 6. crepe paper; 7. PVA glue dispensing positions; 8. a loading storage device; 9. shaping device; 10. a compounding device; 11. a feeding manipulator head; 12. feeding mechanical fingers; 13. a feeding power central shaft; 14. a feeding fixing seat; 15. feeding a rotary bevel gear; 16. feeding oblique crossing dividing gears; 17. feeding oblique support shafts; 18. feeding and rotating the finger; 19. a storage rotating frame; 20. a storage wire carrying table; 21. a storage support inner sidewall; 22. storing the division notch; 23. grooving the storage process; 24. storing eccentric contact press rolls; 25. storing a walking gear shaft; 26. storing a guide rack; 27. storing the walking guide seat; 28. storing spring fork heads; 29. storing radial guide grooves; 30. a storage side swing output guide plate; 31. storing a reset spring seat; 32. storing the lower shaft seat; 33. shaping and outputting a pair of rollers; 34. shaping and cleaning a hairbrush; 35. shaping side paint brushing rollers; 36. a shaping end painting part; 37. shaping and drying parts; 38. a shaping output unit; 39. a composite conveying pair roller; 40. compounding a lower supporting step; 41. feeding optical fibers into a pair roller set; 42. an optical fiber feeding station; 43. a straight column side roller; 44. side roller with middle groove; 45. a dispensing operation part; 46. a dispensing machine; 47. a glue supplementing part; 48. a gumming machine; 49. feeding the paper into a pair of roller sets; 50. forming a side press roller; 51. and storing the energy storage spring.
Detailed Description
As shown in fig. 1 to 9, as an embodiment, the oil immersed transformer winding of the integrated optical fiber deformation sensor of the present embodiment is used for winding on a winding frame 1 having a frame lead wire opening 2; comprising copper wires 3 with wire leads 4 led out from corresponding wire openings 2 of the winding frame at two ends; an optical fiber sensor 5 is adhered to the middle part of the copper wire 3 at least at the outermost layer wound by the winding frame 1; a crepe paper 6 is arranged outside the optical fiber sensor 5,
at least the copper wire 3 at the outermost layer and the optical fiber sensor 5 are fixed by dispensing at 7 positions of a plurality of PVA dispensing positions.
The copper wire 3 is arranged on the winding frame 1 by adopting a cake-type winding;
the copper wire 3 is wound on the winding frame 1 in a single layer or in multiple layers.
As shown in fig. 1 to 9, as an embodiment, the installation system of the oil immersed transformer winding of the integrated optical fiber deformation sensor of the present embodiment includes a loading storage device 8 for loading the outsourced hollow copper wire 3;
the feeding mechanical arm comprises a feeding mechanical arm head 11 with multi-axis control, wherein two or three feeding mechanical fingers 12 are circumferentially distributed at the lower end of the feeding mechanical arm head 11, and the feeding mechanical fingers 12 have radial and axial states;
a feeding power central shaft 13 for transmitting rotary power is arranged in the inner cavity of the feeding manipulator head 11, a feeding fixing seat 14 is rotatably arranged on the feeding power central shaft 13 through a bearing, and the feeding fixing seat 14 is arranged on the feeding manipulator head 11;
a feeding rotary bevel gear 15 is arranged at the lower end of the feeding power central shaft 13;
the feeding mechanical finger 12 comprises a feeding oblique support shaft 17 which is obliquely arranged on the feeding mechanical hand head 11 at 45 degrees, a feeding oblique dividing gear 16 which is meshed with the feeding rotary bevel gear 15 is sleeved on the feeding oblique support shaft 17, and a feeding rotary finger 18 is arranged at the lower part of the feeding oblique dividing gear 16; the included angle between the axial lead of the feeding rotary finger 18 and the feeding inclined support shaft 17 is 90 degrees or 135 degrees.
A storage rotating frame 19 is rotatably arranged at the stroke end of the feeding manipulator head 11; the storage rotating frame 19 is arranged in a hollow manner in the center, and the lower inner cavity is provided with a space for accommodating the swing reset of the feeding rotating finger 18; a storage disc line bearing table 20 is coaxially arranged on the storage rotary frame 19; a storage support inner side wall 21 is arranged in the inner ring of the storage disc line bearing table 20, and storage graduation openings 22 are axially and circumferentially equally distributed on the storage support inner side wall 21 so that the feeding mechanical fingers 12 enter and descend; a storage process slot 23 communicated with the storage index notch 22 is arranged on the storage disc line bearing table 20;
the storage support inner side wall 21 is arranged in the through cavity and used for passing through the feeding manipulator head 11;
a plurality of storage radial guide grooves 29 are distributed on the storage disc line bearing table 20, and storage guide racks 26 are arranged on the side parts of the storage radial guide grooves 29 in parallel;
at least three storage eccentric contact press rollers 24 are circumferentially distributed on the outer side of the storage disc line bearing table 20, and a storage traveling gear shaft 25 and a storage traveling guide seat 27 are respectively arranged at the lower end of the storage eccentric contact press rollers 24;
a storage traveling gear shaft 25 for meshing with the storage guide rack 26;
a storage travel guide 27 for traveling in a storage radial guide groove 29;
a storage output station is arranged between two adjacent storage eccentric contact press rollers 24, a storage side swing output guide plate 30 is fixedly arranged on the side part of the station, and the storage side swing output guide plate 30 and the storage disc line bearing table 20 are arranged in a split mode; the storage side swing output guide plate 30 is hinged on a corresponding rack on the outer side of the storage rotating frame 19 in a swing mode, and a storage reset spring seat 31 is arranged on the rack so as to be hinged with the back face of the storage side swing output guide plate 30; the end of the storage side swing output guide plate 30 is contacted with the outer side wall of the coiled copper wire 3;
a storage lower shaft seat 32 is arranged at the lower end of the storage walking guide seat 27, a storage energy storage spring 51 and a storage spring fork 28 are arranged on the storage disc wire bearing table 20, the storage energy storage spring 51 is connected with the storage lower shaft seat 32 so as to enable the storage eccentric contact press roller 24 to radially move, and the storage eccentric contact press roller 24 rotates in the moving process so as to enable fluff on the storage eccentric contact press roller to be in contact with the copper wire 3; the storage spring prongs 28 are used to insert the storage springs 51 to block the return pull of the storage springs 51.
The copper wire 3 is a single strand, and the cross section of the copper wire is rectangular or circular;
the output end of the storage side swing output guide plate 30 is provided with a shaping device 9 which comprises a plurality of linearly arranged shaping output pair rollers 33 for linearly outputting the copper wire 3, and at least a shaping cleaning brush 34 for cleaning the copper wire 3, shaping side paint rollers 35 for painting two side parts of the copper wire 3, shaping end paint brushing parts 36 for painting upper and lower end parts of the copper wire 3, shaping drying parts 37 for drying the surface paint of the copper wire 3 and shaping output parts 38 for outputting the copper wire 3 to the next station are sequentially distributed on the conveying line of the shaping output pair rollers 33.
The shaping output part 38 is connected with a composite device 10 which comprises a composite conveying pair roller 39 for advancing the copper wire 3, and a composite lower supporting step 40 is arranged at the lower part of the channel of the composite conveying pair roller 39 to realize positioning and lifting of the lower side part of the copper wire 3;
an optical fiber feeding station 42 of an optical fiber positioning carrier is arranged on the composite conveying pair roller 39, an optical fiber feeding pair roller group 41 is arranged on the side part of the optical fiber feeding station 42 and used for conveying the optical fiber sensor 5 into the optical fiber feeding station 42 and being lifted and positioned by the optical fiber positioning carrier, and a corresponding straight column side roller 43 and a side roller 44 with a middle groove are arranged on the front side of the optical fiber feeding station 42; the optical fiber positioning carrier is positioned in the middle of the front side surface of the copper wire 3;
a straight-column side roller 43 for contacting the back side of the copper wire 3, a side roller 44 with a middle groove for rolling contact with the front side of the copper wire 3 and the optical fiber sensor 5, wherein the optical fiber sensor 5 is positioned in the middle groove of the side roller 44 with the middle groove;
a dispensing operation section 45, a glue replenishing section 47, and a paper packaging section are provided in this order on the conveying line of the column side roller 43 and the belt intermediate groove side roller 44;
a dispensing machine 46 is arranged at the dispensing operation part 45 and is used for dispensing and fixing the copper wire 3 and the optical fiber sensor 5 through a plurality of PVA dispensing positions 7;
the glue supplementing part 47 is used for secondarily supplementing glue to the opening and closing part of the PVA glue dispensing part 7;
a paper feeding pair roller group 49 is provided outside the paper packaging part, a glue spreader 48 is provided on the side of the paper feeding pair roller group 49, and a forming side press roller 50 is provided on the output side of the paper feeding pair roller group 49;
the paper feeding pair roller group 49 is used for feeding the crepe paper 6 into the paper packaging part to be adhered to the front surface of the copper wire 3, the glue spreader 48 is used for gluing the adhesive surface of the crepe paper 6, and the forming side pressing roller 50 is used for forming and rolling the copper wire 3 after the crepe paper 6 is compounded.
As shown in fig. 1 to 9, as an embodiment, the installation process of the oil immersed transformer winding of the integrated optical fiber deformation sensor of the present embodiment performs the following steps, S1, firstly, the optical fiber sensor 5 is arranged at the outer side of each wire cake of the winding, wherein the length of the head optical fiber sensor 5 is reserved according to the wire outlet position of the transformer, and the reserved optical fiber sensor 5 is coiled into a ring; then, in the winding process of the winding, at least the copper wire 3 at the outermost layer and the optical fiber sensor 5 are fixed by dispensing 7 at a plurality of PVA dispensing positions;
s2, the optical fiber sensor 5 is placed in the middle of the surface of the copper wire 3 in parallel, and is bonded or bound with the copper wire 3 by using the crepe paper 6;
s3, winding the tail end of the optical fiber sensor 5 into a circular ring after winding is completed, and binding the tail end of the winding.
As a conventional process, it may be configured with a cutting portion and a corresponding deburring process to cut a desired length for a subsequent winding process. The drawings of the present invention omit details and other conventional technical features of the rack carrier.
As shown in fig. 1 to 9, as an embodiment, the installation process of the oil immersed transformer winding of the integrated optical fiber deformation sensor of the present embodiment, the following steps are performed,
firstly, outsourcing coiled copper wire 3; then, the feeding manipulator head 11 descends, and the feeding manipulator fingers 12 which are axially distributed are inserted into the central hole of the coiled copper wire 3; then, the feeding power central shaft 13 drives the feeding rotary bevel gear 15 to rotate, and the feeding oblique-crossing gear 16 is made to rotate, so that the feeding rotary finger 18 swings upwards to hook the central hole of the coiled copper wire 3 and lift the coiled copper wire;
firstly, feeding the manipulator head 11 to the storage rotating frame 19 and entering the inner cavity of the storage supporting inner side wall 21; then, the feeding mechanical finger 12 moves forward along the storage division notch 22 and the storage process slot 23 to sleeve the copper wire 3 on the storage support inner side wall 21; secondly, the feeding power central shaft 13 drives the feeding rotary finger 18 to swing back to an axial state and move reversely to be separated from the copper wire 3;
step three, firstly, the storage spring fork head 28 is loosened by a manipulator or a worker, the storage energy storage spring 51 is loosened, the storage walking guide seat 27 radially walks towards the center along the storage radial guide groove 29, and meanwhile, the storage walking gear shaft 25 and the storage guide rack 26 are meshed and rotated, so that the storage eccentric contact press roller 24 is in pressure contact with the outer side wall of the coiled copper wire 3, and continuously moves towards the center along with the shrinkage of the coiled copper wire 3; then, the storage rotating frame 19 is rotated so that the end of the copper wire 3 is guided and output by the copper wire 3, and as the coiled copper wire 3 is contracted, the storage reset spring seat 31 swings the storage rotating frame 19 to be in contact with the outer side wall of the copper wire 3.
Step four, firstly, the output copper wire 3 is output and straightened through a shaping output pair roller 33; then, the shaping cleaning brush 34 cleans the copper wire 3; secondly, painting the two side parts of the copper wire 3 by a shaping side paint roller 35 or a paint spraying part; thirdly, the upper and lower end parts of the copper wire 3 are painted by the shaping end painting part 36; then, the shaping and drying part 37 dries the surface paint of the copper wire 3 and outputs the paint to the next station through the shaping and outputting part 38;
step five, firstly, the optical fiber feeding pair roller group 41 outputs the end head of the optical fiber sensor 5 to a reserved length through the shaping output part 38 in advance; then, the composite transfer pair roller 39 advances the copper wire 3; secondly, at an optical fiber feeding station 42, an optical fiber sensor 5 is attached to the front surface of the copper wire 3 and moves forward, the optical fiber sensor is positioned and driven to move forward through an optical fiber positioning carrier and a groove with a middle groove side roller 44, and the lower side part of the copper wire 3 is positioned and lifted through a composite lower supporting step 40; again, the roller 43 is driven to advance and reach the belt middle groove side roller 44; then, the dispensing operation section 45 performs dispensing treatment on the optical fiber sensor 5 and the copper wire 3 and air-dries; then, in the glue supplementing part 47, glue is supplemented for the second time to the unqualified positions of the glue dropping of the optical fiber sensor 5 and the copper wire 3;
step six, firstly, the paper feeding pair roller group 49 feeds the crepe paper 6 into the paper packaging part to be bonded with the front surface of the copper wire 3; then, the glue coater 48 glues the bonding surface of the crepe paper 6; next, the copper wire 3 after the composite crepe paper 6 is formed and rolled by the forming side pressure roller 50.
As shown in fig. 1-9, the present invention, as an embodiment, employs a distributed fiber optic strain sensor, which is suitable for use with pancake windings (e.g., spiral windings, continuous windings, etc.). The sensor needs to be synchronously wound with the outermost layer of wires in the winding process of the winding, and meanwhile, attention needs to be paid to the treatment of the optical fibers at the outlet position and the transposition position of the head end of the winding.
The specific scheme is as follows:
1) The optical fiber sensor is arranged on the outer side of each wire cake of the winding, the length of the optical fiber at the head end is reserved according to the outgoing line position of the transformer, and in order to prevent the damage of the optical fiber inside the winding caused by pulling, part of the optical fiber needs to be coiled into a ring with the diameter of 200mm, and the optical fiber is bound on the head end of the winding by using a shrink tape.
2) The fiber sensor was placed in parallel in the middle of the surface of the outermost wire and was banded with a half stack of 22HCC crepe paper and the outermost wire, see fig. 1 (figure).
3) In the winding process, the optical fiber sensor and the outermost layer of wires are glued once by PVA glue every 100mm, as shown in figure 2.
As an example of an implementation of the method,
4) At the transposition locations of the windings, the optical fibers transition with the last transposition of the wire, and the transposition locations are intermittently bound with 22HCC crepe paper and the wire, as shown in fig. 3.
5) During winding, the optical fibers cannot be bent or crossed, and are wound together with the winding.
As an example of an implementation of the method,
6) After winding, winding the end of the optical fiber sensor into a ring with the diameter of 200mm, and binding the ring on the end of the winding.
As an embodiment, an installation process of an optical fiber winding deformation sensor of an oil immersed transformer adopts a distributed optical fiber strain sensor, and is suitable for cake windings (such as spiral windings, continuous windings, etc.). The sensor needs to be synchronously wound with the outermost layer of wires in the winding process of the winding, and meanwhile, attention needs to be paid to the treatment of the optical fibers at the outlet position and the transposition position of the head end of the winding.
The process can ensure that the distributed optical fiber strain sensor is tightly attached to the whole winding, ensure that the distributed optical fiber strain sensor and the winding deform synchronously, discover the deformation of the winding of the transformer at different degrees in time, and improve the operation reliability of the oil immersed transformer.
The various embodiments of the invention may be reasonably combined or used alone.
The invention has the advantages that the feeding storage device 8 realizes the feeding of coiled wires, the shaping device 9 realizes the shaping of the wires, the compounding device 10 realizes the compounding of optical fibers, the feeding is driven by the feeding manipulator head 11 to operate the feeding manipulator finger 12, the feeding power central shaft 13 realizes the rotary driving, the feeding fixing seat 14 is a conventional fixed supporting part, the feeding rotary bevel gear 15 realizes the simultaneous working of a plurality of feeding oblique cross gears 16, the feeding oblique supporting shaft 17 realizes the rotation of the feeding rotary finger 18, the storage rotary frame 19 rotates by the driving of a motor, the storage disc wire bearing table 20 realizes the coiling bearing, the storage supporting inner side wall 21 realizes the coiling supporting, the storage indexing notch 22, the storage process slotting 23 realizes the feeding of coils, the storage eccentric contact compression roller 24 is guided to walk through the storage walking guide seat 27 when being meshed by the storage walking gear shaft 25 and the storage guiding rack 26, realizing the butt joint with the outer side wall of the coil by utilizing eccentricity, realizing the energy storage clamping position after the storage energy storage spring 51 is stretched by the storage spring fork head 28, realizing the guidance of the storage radial guide groove 29, realizing the butt joint between the guide plate and the coil by utilizing the swing distance difference and the storage reset spring seat 31, realizing the traction of the storage lower shaft seat 32 by the energy storage spring 51, realizing the shaping output of the shaping output pair roller 33, cleaning dust and the like by the shaping cleaning brush 34, optimizing the shaping side paint roller 35 and the shaping end paint brushing part 36, being other paint brushing processes, adding other drying processes in the middle, integrally drying and releasing stress by the shaping drying part 37, realizing the heat post shaping by the shaping output part 38, realizing the continuous transmission by the composite transmission pair roller 39, realizing the vertical positioning by the composite lower support step 40, feeding the optical fibers to the pair roller group 41, the optical fiber feeding station 42 realizes continuous input of optical fibers, the optical fiber feeding station can be manually drawn in advance and lengthened at the rear end, the straight column side roller 43 and the side roller 44 with the middle groove realize profiling driving, the dispensing operation part 45 and the dispensing machine 46 realize conventional operation, the glue supplementing part 47 carries out secondary glue supplementing, the glue coater 48 is adopted in the invention, the paper is fed into the pair roller group 49 to realize adhesion, of course, the wrapping paper is carried out in a winding mode, the extrusion adhesion after the bonding is realized by the forming side roller 50, the automatic feeding, shaping, compounding and the like of winding are realized, and the invention is an improvement of part of stations, wherein the conventional processes of inspection, measurement, deviation correction, shearing, thorn removal and the like can be increased and decreased.
The present invention is fully described for more clarity of disclosure and is not set forth in the prior art.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents; it is obvious to a person skilled in the art to combine several embodiments of the invention. Such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention. The technical content that is not described in detail in the invention is known in the prior art.
Claims (3)
1. An installation system of an oil immersed transformer winding of an integrated optical fiber deformation sensor is characterized in that: comprises a feeding storage device (8) for feeding outsourcing hollow copper wires (3);
the feeding mechanical arm comprises a feeding mechanical arm head (11) with multi-axis control, wherein two or three feeding mechanical fingers (12) are circumferentially distributed at the lower end of the feeding mechanical arm head (11), and the feeding mechanical fingers (12) are in radial and axial states;
a feeding power central shaft (13) for transmitting rotary power is arranged in the inner cavity of the feeding manipulator head (11), a feeding fixing seat (14) is rotatably arranged on the feeding power central shaft (13) through a bearing, and the feeding fixing seat (14) is arranged on the feeding manipulator head (11);
a feeding rotary bevel gear (15) is arranged at the lower end of the feeding power central shaft (13);
the feeding mechanical finger (12) comprises a feeding oblique support shaft (17) which is obliquely arranged on the feeding mechanical hand head (11) at 45 degrees, a feeding oblique cross gear (16) which is meshed with the feeding rotary bevel gear (15) is sleeved on the feeding oblique support shaft (17), and a feeding rotary finger (18) is arranged at the lower part of the feeding oblique cross gear (16); the included angle between the axial lead of the feeding rotary finger (18) and the feeding oblique support shaft (17) is 90 degrees or 135 degrees;
a storage rotating frame (19) is rotatably arranged at the stroke end of the feeding manipulator head (11); the storage rotating frame (19) is arranged in the center in a hollow way, and the inner cavity at the lower part is provided with a space for accommodating the swing reset of the feeding rotating finger (18); a storage disc line bearing table (20) is coaxially arranged on the storage rotary frame (19); a storage support inner side wall (21) is arranged in the inner ring of the storage disc line bearing table (20), and storage graduation openings (22) are axially and circumferentially equally distributed on the storage support inner side wall (21) so that the feeding mechanical fingers (12) enter and descend; a storage process slot (23) communicated with the storage graduation notch (22) is arranged on the storage disc line bearing table (20);
the storage support is arranged in a through inner cavity of the inner side wall (21) and is used for passing through the feeding manipulator head (11);
a plurality of storage radial guide grooves (29) are distributed on the storage disc line bearing table (20), and storage guide racks (26) are arranged on the side parts of the storage radial guide grooves (29) in parallel;
at least three storage eccentric contact press rollers (24) are circumferentially distributed on the outer side of the storage disc line bearing table (20), and a storage traveling gear shaft (25) and a storage traveling guide seat (27) are respectively arranged at the lower end of each storage eccentric contact press roller (24);
a storage traveling gear shaft (25) for meshing with the storage guide rack (26);
a storage walking guide seat (27) for walking in a storage radial guide groove (29);
a storage output station is arranged between two adjacent storage eccentric contact press rollers (24), a storage side swing output guide plate (30) is fixedly arranged on the side part of the station, and the storage side swing output guide plate (30) and the storage disc line bearing table (20) are arranged in a split mode; the storage side swing output guide plate (30) is arranged on a rack on the outer side of the corresponding storage rotating frame (19) in a swing hinge manner, and a storage reset spring seat (31) is arranged on the rack so as to be hinged with the back surface of the storage side swing output guide plate (30); the end of the storage side swing output guide plate (30) is contacted with the outer side wall of the coiled copper wire (3);
a storage lower shaft seat (32) is arranged at the lower end of the storage walking guide seat (27), a storage energy storage spring (51) and a storage spring fork head (28) are arranged on the storage disc line bearing table (20), the storage energy storage spring (51) is connected with the storage lower shaft seat (32) so that the storage eccentric contact press roller (24) moves radially, and the storage eccentric contact press roller (24) rotates in the moving process so that fluff is contacted with the copper wire (3); the storage spring fork head (28) is used for inserting the storage energy storage spring (51) so as to block the storage energy storage spring (51) from resetting and pulling;
the device comprises a storage side swing output guide plate (30), a shaping device (9), a shaping and drying device and a shaping and drying device, wherein the shaping device comprises a plurality of linearly arranged shaping and output pair rollers (33) for linearly outputting copper wires (3), shaping and cleaning brushes (34) for cleaning the copper wires (3), shaping side paint rollers (35) for painting two side parts of the copper wires (3), shaping end paint brushing parts (36) for painting the upper end part and the lower end part of the copper wires (3), shaping and drying parts (37) for drying surface paint of the copper wires (3) and shaping and outputting parts (38) for outputting the output copper wires (3) to a next station are sequentially distributed on a conveying line of the shaping and output pair rollers (33);
the shaping output part (38) is connected with a composite device (10), and the composite device comprises a composite conveying pair roller (39) for advancing the copper wire (3), and a composite lower supporting step (40) is arranged at the lower part of a channel of the composite conveying pair roller (39) to realize positioning and lifting of the lower side part of the copper wire (3).
2. The mounting system for an oil immersed transformer winding of an integrated optical fiber deformation sensor according to claim 1, wherein: the copper wire (3) is single-stranded, and the cross section of the copper wire is rectangular or circular.
3. The mounting system for an oil immersed transformer winding of an integrated optical fiber deformation sensor according to claim 2, wherein:
an optical fiber feeding station (42) of an optical fiber positioning carrier is arranged on the composite conveying counter-roll (39), an optical fiber feeding counter-roll set (41) is arranged on the side part of the optical fiber feeding station (42) and used for conveying an optical fiber sensor (5) into the optical fiber feeding station (42) and being lifted and positioned by the optical fiber positioning carrier, and a corresponding straight column side roll (43) and a side roll (44) with a middle groove are arranged on the front side of the optical fiber feeding station (42); the optical fiber positioning carrier is positioned in the middle of the front side surface of the copper wire (3);
the straight column side roller (43) is used for contacting with the back side surface of the copper wire (3), and the middle groove side roller (44) is used for rolling contact with the front side surface of the copper wire (3) and the optical fiber sensor (5), wherein the optical fiber sensor (5) is positioned in a middle groove of the middle groove side roller (44);
a dispensing operation part (45), a glue supplementing part (47) and a paper packaging part are sequentially arranged on a conveying line of the straight column side roller (43) and the side roller (44) with the middle groove;
a dispensing machine (46) is arranged at the dispensing operation part (45) and is used for dispensing and fixing the copper wire (3) and the optical fiber sensor (5) through a plurality of PVA dispensing positions (7);
the glue supplementing part (47) is used for secondarily supplementing glue to the opening and closing part of the PVA glue dispensing part (7);
a paper feeding pair roller set (49) is arranged outside the paper packaging part, a glue spreader (48) is arranged at the side part of the paper feeding pair roller set (49), and a forming side pressing roller (50) is arranged at the output side of the paper feeding pair roller set (49);
the paper feeding pair roller group (49) is used for feeding the crepe paper (6) into the paper packaging part to be bonded with the front surface of the copper wire (3), the gumming machine (48) is used for gumming the bonding surface of the crepe paper (6), and the forming side pressing roller (50) is used for forming and rolling the copper wire (3) after the crepe paper (6) is compounded.
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| CN202111443184.5A CN114005673B (en) | 2021-11-30 | 2021-11-30 | Oil immersed transformer winding integrated with optical fiber deformation sensor, mounting process and system |
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| CN202111443184.5A CN114005673B (en) | 2021-11-30 | 2021-11-30 | Oil immersed transformer winding integrated with optical fiber deformation sensor, mounting process and system |
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| CN114005673B true CN114005673B (en) | 2023-12-22 |
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