JP4515322B2 - 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. 6 and 7, for example. FIG. 6 is a partially transparent structure diagram, and FIG. 7 is a coil structure diagram showing a part of the coil in cross section.
The coil 1 having this configuration has a coiled wire material 3 of an insulation-coated electric wire having a small diameter around a winding core 2 made of an insulating cylinder, and has a closely wound multilayer structure, and an interlayer insulating material 4 of an insulating film is inserted between each layer. The cross section is formed in a trapezoidal shape. A shield 5 is attached to the outer peripheral portion of the coil 1 so as not to cause electric field concentration, and is housed in a sealed container 6 as shown in FIG. 6, and an insulating spacer 7 is provided at a connection portion with the gas insulated switchgear. The inside is filled with an insulating gas.
As a winding apparatus for winding a coil having a trapezoidal cross section as shown in FIG. 7, 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 the cross section is finished in a trapezoidal shape without processing after winding. It is something that can be done.

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 is a method in which the end of the insulating tape is attached to the surface of the coil with a single-sided adhesive tape using a sticking roller every time one layer of winding is completed, and the insulating tape is wound by rotating the winding core. It is shown.

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

The amount of interlayer insulating material used as one insulating layer inserted between each winding layer of the voltage transformer coil varies depending on the type of coil to be wound. The unit of purchase of the interlayer insulating material is set to a size that can be easily mounted on the interlayer insulating material roll support base, and does not match the amount of one coil 1 used. Arise. When material runs out during winding, the winding operation needs to be temporarily stopped and replenished.
Patent Document 1 and Patent Document 2 do not disclose any method for replenishing the interlayer insulating material. However, when a material shortage actually occurs in the winding device, the operator temporarily stops the winding operation of the winding device. It is assumed that winding is continued by changing the interlayer insulating material.
When automating the winding operation of the voltage transformer coil, continuous operation without stopping the winding device is to obtain the best operating rate of the winding device. When the material of the interlayer insulating material is cut, the winding operation is automatically stopped temporarily, and there is a problem that the operating rate of the winding device is lowered.
The present invention has been made in order to solve the above-described problems. When the material of the interlayer insulating material runs out, it can be quickly replenished to minimize the decrease in the operating rate of the winding device. An object is to provide a wire device.

A winding device for a voltage transformer coil according to the present invention includes a coil winding mechanism that winds a coil wire around a winding core, an interlayer insulating material roll support that supports an interlayer insulating material roll, Interlayer insulating material supply means for cutting the width and length into the coil winding mechanism and the tip of the interlayer insulating material cut to a predetermined size are guided to the surface of the coil being wound to wind the coil. It is arranged between the interlayer insulating material inserting means for inserting between the rotating layers, the coil winding mechanism and the interlayer insulating material supplying means, and is supported on the upper part of the sliding frame so as to be movable up and down on the sliding frame. A dancer roller mechanism having a swing roll that moves up and down so as to have a predetermined tension on the interlayer insulation material, a coil winding mechanism, an interlayer insulation material supply means, an interlayer insulation material insertion means, and the dancer roller mechanism are controlled. A control device,
The interlayer insulation roll is mounted on the interlayer insulation roll support base, the interlayer insulation is inserted into the dancer roller mechanism and the interlayer insulation supply means, the inserted interlayer insulation is stopped, and the swing roll is lowered to a low position. The amount of change in the height of the swing roll when the interlayer insulation roll supported by the interlayer insulation roll support is reversed by one rotation is detected, and the control device detects the change in the detected height of the swing roll. The outer diameter of the interlayer insulating material roll is obtained from the amount, the remaining length of the interlayer insulating material roll is calculated, and the number of layers in which the coil can be wound is calculated and displayed.

When the voltage transformer coil winding device is configured as described above, the remaining length of the interlayer insulating material can be accurately grasped even if the interlayer insulating material roll is wound in an elliptical shape.
In addition, since the number of winding layers that will run out of material is clearly displayed in advance without mounting an interlayer insulating material for one voltage transformer coil to be wound first, When the material runs out, the material can be efficiently replenished to prevent a reduction in the operating rate of the winding device.
Furthermore, even an interlayer insulating material roll with a small remaining amount can be used up without any problem, and generation of an end material of the interlayer insulating material can be almost eliminated.

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 Japanese Patent Application Laid-Open No. 2004-193410 is used.
The winding device includes a coil winding mechanism 10, an interlayer insulating material supply means 30, an interlayer insulating material insertion means 40, a scrap discharging means 50, and a dancer roller mechanism 60.
The interlayer insulating material supply means 30 is arranged at the upper part of the moving carriage 20, and the interlayer insulating material insertion means 40 is arranged at the lower part of the interlayer insulating material supply means 30 of the moving carriage 20, and the moving carriage 20 supports the rail 21 on the coil 21. It is configured to be movable back and forth by the drive mechanism 22 in the direction of the table 11.

  The coil winding mechanism 10 includes a coil support base 11 for mounting the winding core 2 and winding the coil wire 3, a coil wire support base 13 for supporting the coil wire drum 3 a around which the coil wire 3 is wound, and a coil A guide wheel 15 that guides the wire 3 toward the coil support 11 and a wire guide mechanism 16 that 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 includes a supply table 31 that transfers the interlayer insulating material 4 to the coil winding mechanism 10 and supplies it to the surface of the coil 1 being wound, and an interlayer suspended on the interlayer insulating material roll support 14. A guide roll 32 that supplies the interlayer insulating material 4 from the insulating material roll 4a onto the supply table 31, a brake roll 33 that adjusts the feed speed of the supplied interlayer insulating material 4 and stops at a predetermined position if necessary, an interlayer A width cutting cutter 34 for cutting the insulating material 4 into a predetermined width, a guide roll 35 for guiding 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 that feeds a set length, a turning roll 37 that turns the tip of the delivered interlayer insulating material 4 downward, and a transverse cutter 3 that cuts the interlayer insulating material 4 by a predetermined length When, and a spray nozzle 39 for blowing fed compressed air at the tip portion of the interlayer insulator 4.

  When the supply table 31 is formed in a flat plate shape, the passing interlayer insulation material 4 generates static electricity due to friction, the supply table 31 and the interlayer insulation material 4 are adsorbed, and the interlayer insulation material 4 cannot be supplied smoothly. Therefore, 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 contact area between the upper surface of the supply table 31 and the interlayer insulation material 4 will decrease, generation | occurrence | production of static electricity will be suppressed, and the interlayer insulation material 4 will be able to 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 an appropriate pressure. ing.

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 41a 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, and guides the scrap discharging duct 51 and the scrap 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.

  The dancer roller mechanism 60 is disposed between the interlayer insulating material roll support 14 and the movable carriage 20 on which the interlayer insulating material supplying means 30 and the interlayer insulating material inserting means 40 are mounted, and is supplied to the interlayer insulating material supplying means 30. Appropriate tension is applied to the interlayer insulating material 4. The sliding frame 61, the turning roll 63 mounted on the upper portion of the sliding frame 61, and the swing mounted on the sliding frame 61 so as to be slidable up and down. The movable roll 62 is configured such that the swing roll 62 is adjusted to a weight that allows the interlayer insulating material 4 to be provided with an appropriate tension. The sliding frame 61 is equipped with a height detecting means so that the height position of the swing roll 62 can be detected.

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 specification of the voltage transformer coil is input to the control device, the coil wire drum 3a of the winding material is input to the coil wire support 13 and the interlayer insulating roll 4a is connected to the interlayer insulating roll support 14. The winding core 2 is mounted on the coil support base 11 and the end of the coil wire 3 is hung from the coil support base 13 so as to pass through the guide wheel 15 and the wire guide mechanism 16 and wound around the core 2. .
Next, the interlayer insulating material 4 is passed from the interlayer insulating material roll support 14 to the dancer roller mechanism 60, and passed through the guide roll 32, the brake roll 33, the guide roll 35, the feed roll 36, the crossing cutter 38, and the turning roll 37. It is inserted to the vicinity of the adsorption member 41.

Next, a method for obtaining the remaining amount of the interlayer insulating material roll 4a by the dancer roll mechanism 60 will be described. FIG. 4 is an explanatory view of the operation of the dancer roller mechanism 60 when the remaining amount of the interlayer insulating material roll 4a of the dancer roll mechanism 60 is measured.
The interlayer insulating material 4 is fixed so that the interlayer insulating material 4 does not move by the brake roll 33 while the interlayer insulating material 4 is inserted into the interlayer insulating material supply mechanism 30, and the swing roll 62 of the dancer roll mechanism 60 is lowered to the lowermost position. The inter-layer insulating material roll 4a of the material roll support 14 is reversed once and the height change amount H of the swing roll 62 is detected and input to the control device.
The control device calculates the outer diameter of the interlayer insulating material roll 4 a from the detected height change amount H of the swing roll 62, and calculates the interlayer from the outer diameter, the core diameter of the interlayer insulating material, and the thickness of the interlayer insulating material 4. Calculate the length of the insulating material, calculate the number of windable layers that can be wound with the calculated length of the interlayer insulating material, display it so that the operator can read it, and wind it when the number of windable layers is reached Pauses the operation and outputs an interlayer insulation material out warning.

  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. Further, when the coil wire 3 is disconnected during winding, the winding operation of the coil winding mechanism 10 is temporarily stopped at the disconnection position. When the winding operation is stopped due to the disconnection of the coil wire 3, the coil wire 3 is connected.

  In the interlayer insulating material supply mechanism 30, the front end portion of the interlayer insulating material 4 cut into a predetermined width supplies the suction portion of the suction member 41 to the proximity position. 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. 5A, the adsorption member 41 of the interlayer insulating material inserting means 40 is positioned 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 coil winding mechanism 10 finishes winding one layer of tightly wound winding, the coil winding mechanism 10 temporarily stops, and the interlayer insulating material 4 cut into a predetermined width from the interlayer insulating material supply means 30. 5 is supplied to the height shown in FIG. 5B, the feeding is stopped, 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. 5B, the tip of the interlayer insulating material 4 is adsorbed by the adsorbing member 41, and the state of FIG.
(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. When the adsorbing member 41 is lowered while sliding, the wrinkles and looseness of the interlayer insulating material 4 are extended and the state shown in FIG.
(5) In the state of FIG. 5 (d), the movable carriage 20 is moved to the coil 1 side 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 heating means 42 is pressed and the tip of the interlayer insulating material 4 is pressed against the outer surface of the coil 1 for a predetermined time to be heat bonded.
(6) The adsorption member 41 in the state of FIG. 5 (e) is moved downward to be separated from the tip of the interlayer insulating material 4, and in the state of FIG. 5 (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 the two to cut the interlayer insulating material 4, the interlayer insulating material 4 having a predetermined length is inserted, and the insertion is completed in the state of FIG. 5 (g). To do.
(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.

  In the winding device of the voltage transformer configured as described above, by calculating the remaining amount of the interlayer insulating material 4 at the beginning of the winding operation of the coil 1 and displaying the number of layers that can be wound, the interlayer insulating material in advance. Therefore, the interlayer insulating material can be replenished in a short time with good timing, and the voltage transformer coil can be wound without reducing the operating rate of the winding device. Moreover, generation | occurrence | production of the end material of the interlayer insulation material 4 can also be suppressed.

FIG. 3 is a structural diagram of a winding device for a voltage transformer coil according to the first embodiment. 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 operation | movement explanatory drawing of a dancer roller mechanism. 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. 7 is a structural diagram of a coil portion in FIG. 6.

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, 60 dancer roller mechanism,
61 sliding frame, 62 swing roll, 63 turning roll.

Claims (2)

A winding device for winding a voltage transformer coil in which a coil wire of an insulation-coated electric wire is tightly wound around a winding core and an insulating layer having an insulating film as an interlayer insulating material is provided between the layers,
A coil winding mechanism for winding the coil wire around a winding core, an interlayer insulating material roll support base for supporting the interlayer insulating material roll,
An interlayer insulating material supply means for cutting the interlayer insulating material into a predetermined width and length and supplying the same to the coil winding mechanism;
Interlayer insulating material insertion means for guiding the tip of the interlayer insulating material cut to a predetermined size to the surface of the coil being wound and inserting it between the wound layers of the coil,
Arranged between the coil winding mechanism and the interlayer insulating material supplying means, a sliding frame, a turning roll on the upper part of the sliding frame, and supported by the sliding frame so as to be movable up and down. A dancer roller mechanism with a rocking roll that gives the tension of
A control device for controlling the coil winding mechanism, the interlayer insulating material supply means, the interlayer insulating material insertion means and the dancer roller mechanism;
The interlayer insulation roll is mounted on an interlayer insulation roll support, the interlayer insulation is inserted into the dancer roller mechanism and the interlayer insulation supply means, the interlayer insulation is stopped, and the swing roll is The control unit detects the amount of change in the height of the swinging roll by lowering the sliding frame to a low position and rotating the interlayer insulating roll supported by the interlayer insulating roll support base one turn. The outer diameter of the interlayer insulating material roll is calculated from the amount of change in the height of the oscillating roll, and the remaining length of the interlayer insulating material roll is calculated, and the number of coils that can be wound is calculated and displayed. A winding device for a voltage transformer coil. The control device temporarily stops the coil winding mechanism when the coil winding mechanism is wound up to the number of wrappable layers corresponding to the remaining length of the interlayer insulating material, and the interlayer insulating material The winding device for a voltage transformer coil according to claim 1, wherein a break alarm is output.

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