JP4722547B2 - Winding device for voltage transformer coil - Google Patents

Description

  The present invention relates to a voltage transformer coil winding device for winding a voltage transformer coil used in a gas insulated switchgear.

The voltage transformer used for the gas insulated switchgear is configured as shown in FIGS. 5 and 6, for example. FIG. 5 is a partially transparent structural view, and FIG. 6 is a coil structural view showing a part of the coil in cross section.
The coil 1 having this configuration has an insulating coated electric wire 3 having a small diameter around a winding core 2 formed of an insulating cylinder, and has a tightly wound multilayer structure. It is formed in a trapezoidal shape, and a shield 5 is attached to the outer peripheral portion so that electric field concentration does not occur. The shield 5 is disposed in a sealed container 6 as shown in FIG. Is provided.
The winding device for the voltage transformer coil according to the present invention is a device for winding the coil 1 of the voltage transformer as shown in FIG.
As a winding apparatus for winding a coil having a trapezoidal cross section as shown in FIG. 6, for example, Patent Document 1 discloses a method for manufacturing a trapezoidal coil.
The manufacturing method of the trapezoidal coil of patent document 1 cut | disconnects both sides so that the width | variety of the insulating film of an interlayer insulation may become narrow corresponding to the winding width | variety which becomes narrow as a coil is wound and a diameter becomes large, and it is on the coil surface. The supply method is taken.

  In this configuration, by supplying an insulating film with a reduced width as the outer diameter of the coil portion increases, the coil end surface is wound up in a tapered shape, and can be finished in a trapezoidal shape without performing post-winding processing. Is.

In addition, when supplying insulating tape for interlayer insulation, each layer to be wound must be supplied to a predetermined position in a direction perpendicular to the axis of the coil core, but supplied correctly to a predetermined position of the coil. For example, Patent Document 2 discloses a method for supplying interlayer insulation.
The method of supplying the insulating tape disclosed in Patent Document 2 includes a method in which the end of the insulating tape is attached to the surface of the coil that has been wound for each layer by a single-sided adhesive tape piece with a sticking roller, the winding core is rotated, and the insulating tape is wound. It is shown.
In general, interlayer insulation of solenoid-type coils is achieved by attaching the end of a tape-like insulating film to the surface of the coil being wound with adhesive tape or the like, and rotating the end of the insulating tape a predetermined number of times with an adhesive. The method of sticking on the outer diameter surface is taken.

Japanese Patent Laid-Open No. 04-337615 Japanese Utility Model Publication No. 05-072122

A conventional voltage transformer coil winding device is configured as described above. In the configuration of Patent Document 1, the coil cross section has a trapezoidal shape, and the width of an interlayer insulating material to be inserted between winding layers is predetermined before insertion. Since it is cut into a width of, it is finished in a predetermined shape without performing processing after winding.
However, since the method for inserting the interlayer insulating material is not shown, it is assumed that it is a method of attaching and winding by an operator, and there is a difficulty in productivity.
Regarding the insertion of the interlayer insulating material, the method disclosed in Patent Document 2 employs a method in which the tip of the insulating tape of the interlayer insulating material is attached to each layer of the coil with a single-sided adhesive tape and wound. The use of the tape has a problem that the insulating performance of the interlayer insulating material may change over time.

  The present invention has been made to solve the above-described problems, and the voltage transformer coil can be wound without setting the first winding condition and without using manual adhesive tape. An object of the present invention is to provide a coil winding device for a voltage transformer.

A winding device for a voltage transformer coil according to the present invention is:
A coil winding mechanism for winding the coil wire around the outer periphery of the core;
An interlayer insulating material roll support that supports an interlayer insulating material roll obtained by rolling an interlayer insulating material;
Supply table for passing the interlayer insulating material in a horizontal state and supplying it to the coil winding mechanism, a pair of width-cutting cutters for cutting the interlayer insulating material passing through the upper surface of the supply table to a predetermined width, and the layered insulating layer A cross-cutting cutter for cutting the material into a predetermined length, an interlayer insulation material supply means comprising a delivery roll for delivering the interlayer insulation material to the winding mechanism,
An adsorption member that adsorbs the leading end of the layered interlayer insulating material and guides it to the surface of the coil being wound, a heating unit that heat-bonds the leading end of the interlayer insulating material to the outer surface of the coil, and drives the heating unit Interlayer insulating material insertion means having a heating means drive mechanism;
An interlayer insulating material supply means is attached to the upper part, an interlayer insulating material insertion means is attached to the lower part of the interlayer insulating material supply means, and includes a movable carriage that can move back and forth in the interlayer insulating material supply direction.
Each time the coil winding mechanism finishes winding one layer of the coil wire, the coil winding mechanism stops, and the tip of the interlayer insulating material that is cut out from the interlayer insulating material supply means is sucked by the suction member. The coil is lowered to the height of the coil being wound, the moving carriage is brought close to the outer surface of the coil being wound, the tip of the interlayer insulating material is heated and bonded by heating means, and the interlayer insulating material is combined with the coil wire. A control device for performing a control to repeat the operation of winding the coil wire material of the next layer when winding the predetermined number of turns and finishing the interlayer insulating material ;
The upper surface of the supply table through which the interlayer insulating material passes is formed such that a plurality of V grooves are provided in the passing direction of the interlayer insulating material so that the contact area with the interlayer insulating material is reduced .

  When the winding device of the voltage transformer coil is configured as described above, the winding condition of the voltage transformer coil to be wound around the control device is input, and by attaching the coil wire material and the interlayer insulating material to the winding device, The voltage transformer coil that satisfies the design conditions can be automatically wound, which greatly improves productivity.

Embodiment 1 FIG.
FIG. 1 is a structural diagram of a winding device for a voltage transformer coil. For example, the coil 1 of the voltage transformer shown in FIG. 6 is wound.
As the coil wire 3, an insulation-coated electric wire having a small diameter is used, and as the interlayer insulation 4, for example, a polyester film coated with an adhesive that adheres to one surface when disclosed in JP 2004-193410 A is used.
The winding device of FIG. 1 includes a coil winding mechanism 10, an interlayer insulating material supply means 30, an interlayer insulating material insertion means 40, and a scrap discharge means 50.

  The coil winding mechanism 10 includes a coil support base 11 on which the winding core 2 is mounted and the coil wire 3 is wound, a coil wire support base 13 that supports a drum around which the coil wire 3 is wound, and the coil wire 3. The guide wheel 15 is guided in the direction of the coil support 11 and the wire guide mechanism 16 guides the coil wire 3 to the winding position of the outer diameter portion of the coil 1 during winding.

  The interlayer insulating material supply mechanism 30 moves the interlayer insulating material 4 to the coil winding mechanism 10 and supplies it to the surface of the coil 1 being wound, and the interlayer insulation suspended on the interlayer insulating material roll support 14. A guide roll 32 for supplying the interlayer insulating material 4 from the material roll onto the supply table 31, a brake roll 33 for adjusting the feeding speed of the supplied interlayer insulating material 4 and stopping at a predetermined position as necessary, and an interlayer insulating material A width cutting cutter 34 that cuts 4 into a predetermined width, a guide roll 35 that guides the cut interlayer insulating material 4 through a predetermined position of the supply table 31, and an interlayer insulating material 4. A feed roll 36 for feeding a certain amount of feed, a turning roll 37 for turning the tip end of the delivered interlayer insulating material 4 downward, a transverse cutter 38 for cutting the interlayer insulating material 4 by a predetermined length, and a feed And a spray nozzle 39 for blowing compressed air to the distal end portion of the interlayer insulating material 4 issued.

  When the supply table 31 is formed in a flat plate shape, the passing interlayer insulating material 4 generates static electricity due to friction, the supply table 31 and the interlayer insulating material 4 are attracted, and the interlayer insulating material 4 cannot be supplied smoothly. As shown in FIG. 2, a plurality of V grooves are formed in the supply direction of the interlayer insulating material 4. If comprised in this way, the friction between the upper surface of the supply table 31 and the interlayer insulation material 4 will decrease, generation | occurrence | production of static electricity can be suppressed, and the interlayer insulation material 4 can be supplied smoothly.

  The interlayer insulating material inserting means 40 heat-bonds the tip of the interlayer insulating material 4 to the surface of the coil 1 being wound with the suction member 41 that sucks and guides the tip of the interlayer insulating material 4 to a predetermined position. A heating means 42 composed of a heating roll, a crank 43 that supports the heating means 42 so as to be movable back and forth, and a pressing cylinder 44 that presses the heating means 42 against the surface of the coil 1 being wound with appropriate pressure are provided. Yes.

As shown in FIG. 3, the suction member 41 is formed in a hollow shape, and a plurality of suction holes 41 a are provided in the suction surface at equal intervals in the lateral direction, and a vacuum suction port 41 b for vacuuming is provided.
When the inside of the adsorbing member 41 is in a vacuum state, the adsorbing member 41 adsorbs when the interlayer insulating material 4 comes close to the adsorbing hole 41a, and pulls the adsorbing member 41 downward to apply tension to the interlayer insulating material 4.

The scrap discharging means 50 is for discharging scrap generated when the interlayer insulating material 4 is cut to a predetermined width by the width cutting cutter 34. The scrap discharging duct 51 and the scrap are guided into the scrap discharging duct 51. Compressed air blowing means 52 for blowing compressed air and a scrap container 53 for storing scrap.
The scrap container 53 is disposed at a position where disposal is easy, and the scrap discharge duct 51 is bifurcated in two directions so that one end can be disposed at the upper part of each of the pair of left and right width-cutting cutters. A side opening is provided, each inlet side opening is disposed at the upper part of each of the width-cutting cutters 34 on both the left and right sides, and the other end is disposed as an outlet side opening so as to open into the scrap container 53. The compressed air is blown by the compressed air blowing means 52 from the side opening.

  If the scrap is discharged like the scrap discharging means 50, the scrap generated by the width cutting can be discharged without staying.

In the voltage transformer coil winding device configured as described above, each part operates by inputting the specification value and winding condition of the coil 1 to be wound into a control device (not shown).
First, the winding specifications of the voltage transformer coil are input to the control device, and the coil wire material of the winding material is suspended on the coil wire support 13 and the interlayer insulation roll is suspended on the interlayer insulation roll support 14. Then, the winding core 2 is mounted on the coil support 11 and the winding operation is started.
In the coil winding mechanism 10, the wire guide mechanism 16 moves at a pitch corresponding to the wire diameter for tightly winding the coil wire 3 and guides it to the winding position. When the number of turns of each layer is wound, the coil winding mechanism 10 stops.
Next, the front end portion of the interlayer insulating material 4 cut into a predetermined width is supplied from the interlayer insulating material supply mechanism 30 to the suction portion of the suction member 41. The interlayer insulating material 4 operates according to the procedure shown in FIG. 4, and the interlayer insulating material 4 is wound a predetermined number of turns together with the coil wire 3, so that the next layer is tightly wound. This operation is repeated for each layer, and the coil 1 is wound.

Next, the operation when the interlayer insulating material 4 is inserted will be described with reference to FIG.
(1) During winding of the coil 1 portion, as shown in FIG. 4A, the adsorbing member 41 of the interlayer insulating material inserting means 40 is located below the turning roll 37 of the interlayer insulating material supplying means 30, and the width The front end of the cut interlayer insulating material 4 is supplied to the position of the suction surface of the suction member 41 and is on standby.
(2) When the tight winding is finished for each layer in the coil winding mechanism 10, the coil winding mechanism 10 stops, and the interlayer insulating material 4 cut into a predetermined width from the interlayer insulating material supply means 30. 4 is supplied to the height shown in FIG. 4B to stop feeding, and the inside of the suction member 41 is evacuated.
(3) When compressed air is instantaneously blown from the blowing nozzle 39 in the state of FIG. 4B, the tip of the interlayer insulating material 4 is adsorbed by the adsorbing member 41 and becomes the state of FIG. 4C.
(4) When the interlayer insulating material 4 is fixed and the adsorption member 41 is moved downward in a state where the tip of the interlayer insulating material 4 is adsorbed by the adsorption member 41, the interlayer insulation material 4 is tensioned by the adsorption member 41. As a result, the wrinkles and looseness of the interlayer insulating material 4 are extended to the state shown in FIG.
(5) In the state shown in FIG. 4D, the movable carriage 20 is moved to the side of the coil 1 being wound, and the portion to which the tension of the interlayer insulating material 4 is applied is brought close to the outer surface of the coil 1 as shown in FIG. As shown in e), the tip of the interlayer insulating material 4 is pressed against the outer surface of the coil 1 for a predetermined time by the heating means 42 and heat bonded.
(6) The adsorption member 41 in the state of FIG. 4 (e) is moved downward to be separated from the tip of the interlayer insulating material 4, and in the state of FIG. 4 (f), the coil winding mechanism 10 is further rotated to produce a coil. The wire 3 and the interlayer insulating material 4 are wound at the same time, and the position where the interlayer insulating material 4 is in contact with the surface of the coil 1 just before the predetermined number of turns of the interlayer insulating material 4 and the transverse cutter 38 of the interlayer insulating material supplying means 30 The cross-cutting cutter 38 is operated at a rotational angle corresponding to the distance between them to cut the interlayer insulating material 4, and the interlayer insulating material 4 having a predetermined length is completely inserted in the state shown in FIG.
(7) When the insertion of the interlayer insulating material 4 is completed, the movable carriage 20 is retracted, and the tip of the interlayer insulating material 4 of the next layer is supplied to the state of FIG.
(8) When the insertion of the interlayer insulating material 4 is completed, the next layer of the coil 1 is tightly wound. When the tight winding is completed, the above operations (1) to (7) are repeated to continue the winding.

  By inserting the interlayer insulating material according to the procedure of FIG. 4, it is possible to insert the interlayer insulating material 4 without causing wrinkles or sagging due to an appropriate tension applied to the interlayer insulating material 4.

  As described above, the voltage transformer coil winding device is configured as shown in FIG. 1, and the coil winding specifications are input to the control device and the control conditions are determined, so that the voltage transformation matching the winding specifications is achieved. A winding device can be constructed in which the coil can be wound automatically without bothering humans.

3 is a structural diagram of a winding device for a voltage transformer coil according to Embodiment 1. FIG. It is explanatory drawing which shows the supply table which supplies the interlayer insulation of the winding apparatus of FIG. 1, and the both-sides width cut state of an interlayer insulation. It is explanatory drawing of the supply state of an interlayer insulation material. It is explanatory drawing of the state which inserts an interlayer insulation stand in the coil in winding. FIG. 3 is a partial perspective view of a voltage transformer used in an insulated switchgear. FIG. 6 is a structural diagram of a coil portion in FIG. 5.

Explanation of symbols

1 coil, 2 core, 3 coil wire, 4 interlayer insulation, 10 coil winding mechanism,
11 Coil support base, 13 Coil wire support base, 14 Interlayer insulating material roll support base,
15 guide wheels, 16 wire guide mechanism, 20 moving carriage, 21 rails,
22 moving mechanism, 30 interlayer insulating material supply means, 31 supply table, 32 guide roll,
33 Brake roll, 34 Width cutting cutter, 35 Guide roll, 36 Feed roll,
37 turning rolls, 38 cross-cutting cutters, 39 spray nozzles,
40 interlayer insulating material insertion means, 41 adsorption member, 42 heating means, 43 crank,
44 pressing cylinder, 50 scrap discharging means, 51 scrap discharging duct,
52 Compressed air blowing means, 53 scrap container.

Claims (6)

Winding a coil of a voltage transformer with an insulating layer between each layer with a plastic film coated with an adhesive that adheres when heated on one side. A winding device for rotating,
A coil winding mechanism for winding the coil wire around the outer periphery of the core;
An interlayer insulation roll support for supporting an interlayer insulation roll obtained by rolling the interlayer insulation;
A supply table that passes the interlayer insulating material and supplies it to the coil winding mechanism, a pair of width-cutting cutters that cut the interlayer insulating material that passes through the upper surface of the supply table into a predetermined width, and the interlayer that has been cut into widths A cross-cutting cutter for cutting the insulating material into a predetermined length, an interlayer insulating material supply means comprising a delivery roll for sending the interlayer insulating material to the coil winding mechanism;
An adsorption member that adsorbs the leading end of the interlayer insulating material that has been cut and guides it to the surface of the coil being wound, a heating unit that heat-bonds the leading end of the interlayer insulating material to the outer surface of the coil, and the heating unit Interlayer insulating material insertion means having a heating means driving mechanism for driving
The interlayer insulating material supply means is attached to the upper part, the interlayer insulating material insertion means is attached to the lower part thereof, and a movable carriage that can move back and forth in the interlayer insulating material supply direction is provided.
Each time the coil winding mechanism finishes winding one layer of the coil wire, the coil winding mechanism stops, and the tip of the interlayer insulating material that is cut out from the interlayer insulating material supply means is sent to the adsorption member. Adsorbed and pulled down to the height of the coil being wound, the moving carriage is brought close to the outer surface of the coil being wound, and the tip of the interlayer insulating material is heated and bonded by the heating means, A control device that performs a control to repeat the operation of winding the coil wire material of the next layer when the interlayer insulation material is wound a predetermined number of times together with the coil wire material and winding of the interlayer insulation material is completed ,
The upper surface of the supply table through which the interlayer insulating material passes is provided with a plurality of V grooves in the passing direction of the interlayer insulating material so that the contact area with the interlayer insulating material is reduced. Transformer coil winding device. The interlayer insulating material supply means includes a spray nozzle that instantaneously blows compressed air in the direction of the adsorbing member of the interlayer insulating material insertion means toward the leading end of the layered interlayer insulating material. The winding device for a voltage transformer coil according to claim 1. The adsorption member of the interlayer insulating material insertion means is formed in a hollow shape, and a plurality of adsorption holes are provided in a row in the horizontal direction on the adsorption surface, and the interlayer insulation material is adsorbed by making the inside a vacuum state , claims stop feeding of the interlayer insulating material in a state of sucking the tip of the interlayer insulating material, and slid the interlayer insulating material surface and performing an operation to lower the suction member in a predetermined position 1. A winding device for a voltage transformer coil according to 1 . When the interlayer insulating material is bonded to the outer surface of the coil and wound, the interlayer insulating material is in contact with the interlayer insulating material on the outer surface of the coil with respect to the position where the predetermined number of turns is performed, The cross- sectional cutter provided in the inter-layer insulating material supply means is operated to cut the inter-layer insulating material at a position just before the rotation angle corresponding to the distance between the cross-cutting cutter position of the inter- layer insulating material supply means. winding apparatus of the voltage transformer coil according to any one of claims 1 to 3, wherein the controller controls so. One end side opening is disposed above each of the scrap container for storing scrap generated by the width cutting of the interlayer insulating material and the pair of width cutting cutters of the interlayer insulating material supply means, and the other end side opening is the above-mentioned A scrap discharge means comprising a scrap discharge duct arranged so as to be opened in a scrap container and a compressed air blowing means for blowing compressed air from the width-cutting cutter side opening of the scrap discharge duct is provided. A winding device for a voltage transformer coil according to any one of claims 1 to 4. The scrap container ejected scrap accumulated in the scrap within the container, blown windings apparatus of the voltage transformer coil according to claim 5, wherein the compressed air is formed in a cage blowing through.

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