Method and device for mounting a winding
First Claim
1. A method of mounting a winding on a stator for a generator comprising the steps:
- a) using cable for the winding, the winding being wound with a number of cables of predetermined lengths for the intended winding of the stator, b) placing the ,enter of the cable of about half the predetermined length at a location in a slot of the stator representing the middle of the intended coil arc, c) starting from the center of the coil arc, winding the first half cable length onto the stator to form a first coil arc half and part of a complete stator winding turn, and d) winding the remaining half cable length onto the stator starting from the said center of the coil arc and in the opposite direction relative to the winding of the first half cable length so as to form the other half of the coil arc on the stator and another part of the complete stator winding, wherein the cable is a high voltage cable.
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Accused Products
Abstract
In a method for mounting a cable winding, cable by cable, on a stator (S) for a generator a number of cables (K) of predetermined lengths are used for the intended winding. The method implies mounting each such cable starting at the stator slot representing the middle of an intended coil arc, the first cable half being mounted according to a winding diagram in one direction from the said center slot and other cable half being mounted according to the winding diagram in the opposite direction starting from the same center slot. The method is carried out by means of a device comprising a drum means, for instance in the form of a capstan machine (2), which originally supports the entire predetermined cable length of a cable. Further, there are two cable feeders (A, B) disposed on either side of the stator (S), which alternatively lay the cable (k) in the stator slots according to the winding diagram by means of intermediate storage means (3, 4).
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Citations
21 Claims
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1. A method of mounting a winding on a stator for a generator comprising the steps:
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a) using cable for the winding, the winding being wound with a number of cables of predetermined lengths for the intended winding of the stator, b) placing the ,enter of the cable of about half the predetermined length at a location in a slot of the stator representing the middle of the intended coil arc, c) starting from the center of the coil arc, winding the first half cable length onto the stator to form a first coil arc half and part of a complete stator winding turn, and d) winding the remaining half cable length onto the stator starting from the said center of the coil arc and in the opposite direction relative to the winding of the first half cable length so as to form the other half of the coil arc on the stator and another part of the complete stator winding, wherein the cable is a high voltage cable.
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2. A method of mounting a winding on a stator for a generator comprising the steps:
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a) using cable for the winding, the winding being wound with a number of cables of predetermined lengths for the intended winding of the stator, b) placing the center of the cable of about half the predetermined length at a location in a slot of the stator representing the middle of the intended coil arc, c) starting from the center of the coil arc, winding the first half cable length onto the stator to form a first coil arc half and part of a complete stator winding turn, d) winding the remaining half cable length onto the stator starting from the said center of the coil arc and in the opposite direction relative to the winding of the first half cable length so as to form the other half of the coil arc on the stator and another part of the complete stator winding where the cable is delivered wound onto a delivery drum, unwinding the cable from the delivery drum a predetermined length, and coiling the cable onto a drum means, marking the center of the cable at half the predetermined length, and cutting the cable at the predetermined length, carrying out step a) and b), the first half cable length up to the center being uncoiled from the drum means using intermediate storage means, and carrying out step c), the remaining half cable length being uncoiled from the drum means using said intermediate storage means.
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3. A method of mounting a winding on a stator for a generator comprising the steps:
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a) using cable for the winding, the winding being wound with a number of cables of predetermined lengths for the intended winding of the stator, b) placing the center of the cable of about half the predetermined length at a location in a slot of the stator representing the middle of the intended coil arc, c) starting from the center of the coil arc, winding the first half cable length onto the stator to form a first coil arc half and part of a complete stator winding turn, d) winding the remaining half cable length onto the stator starting from the said center of the coil arc and in the opposite direction relative to the winding of the first half cable length so as to form the other half of the coil arc on the stator and another part of the complete stator winding A) mounting a cable guide on one free end of the cable, B) inserting the one free end of the cable in a first cable feeder located at the upper side of the stator frame and at the stator slot representing the middle of the intended coil arc, C) running the one free end of the cable with the cable guide through the stator slot, which extends between the first cable feeder and the under side of the stator frame, D) inserting the one free end of the cable with the cable guide in a second cable feeder disposed at the under side of the stator frame and running it through a following stator slot according to a predetermined winding diagram, E) thereafter running the free end of the cable with the cable guide alternatively by means of the first cable feeder and the second cable feeder through the stator slots according to the winding diagram until the cable center marking is just opposite the stator slot representing the middle of the intended coil arc, and F) thereafter repeating steps A)-E) for the other free end of the cable. - View Dependent Claims (4)
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5. A method of mounting a winding on a stator for a generator comprising the steps:
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a) using cable for the winding, the winding being wound with a number of cables of predetermined lengths for the intended winding of the stator, b) placing the center of the cable of about half the predetermined length at a location in a slot of the stator representing the middle of the intended coil arc, c) starting from the center of the coil arc, winding the first half cable length onto the stator to form a first coil arc half and part of a complete stator winding turn, d) winding the remaining half cable length onto the stator starting from the said center of the coil arc and in the opposite direction relative to the winding of the first half cable length so as to form the other half of the coil arc on the stator and another part of the complete stator winding A1) mounting a pull wire to one free end of the cable, B1) inserting the pullwire at one side of the stator frame in the stator slot representing the middle of the intended coil arc, so as to emerge from the stator slot at the other, opposite side of the stator frame, C1) inserting the pull wire in a first cable feeder provided at the other, opposite side of the stator frame, D1) thereafter pulling the pull wire with the cable through the stator slot and inserting it in a following stator slot according to the predetermined winding diagram, D2) when a sufficient length of the pull wire is fed from the following stator slot at one side of the stator frame, inserting it in a second cable feeder provided at the said one side of the stator frame and pulling the cable up therethrough to be taken over by the first cable feeder, which is directed towards the following stator slot according to the winding diagram, E1) running the cable feeders alternately for pulling the cable into the stator slots according to the winding diagram until the center marking of the cable is just opposite the stator slot representing the middle of the intended coil arc, and F1) thereafter repeating steps A1)-E1) for the other half of the cable.
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6. A device for mounting a winding in slots of a stator for a generator, wherein the device is arranged to be used for winding with cable formed of a number of predetermined lengths of cable for the stator winding, comprising:
- drum means arranged to initially support the entire predetermined length of a cable, a first and a second cable feeder adjustable relative to the stator slots, which cable feeders are arranged to alternately lay the cable in successive stator slots according to a predetermined winding diagram by means of intermediate storage means, so that first mounting of a first half of the said predetermined cable length is to be carried out starting from the stator slot representing the middle of an intended coil arc and when winding of a first winding portion is completed, mounting of the other winding portion is to be carried out starting also from said stator slot.
- View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of mounting a winding on a stator for a generator comprising the steps:
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a) using cable for the winding, the winding being wound with a number of cables of predetermined lengths for the intended winding of the stator, b) placing the center of the cable of about half the predetermined length at a location in a slot of the stator representing the middle of the intended coil arc, c) starting from the center of the coil arc, winding the first half cable length onto the stator to form a first coil arc half and part of a complete stator winding turn, and d) winding the remaining half cable length onto the stator starting from the said center of the coil arc and in the opposite direction relative to the winding of the first half cable length so as to form the other half of the coil arc on the stator and another part of the complete stator winding wherein the high-voltage cable comprises a core with a plurality of conductive wires, an inner semiconducting layer surrounding the core, an insulating layer surrounding the inner semiconductive layer and an outer semiconductive layer surrounding the insulating layer.
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21. A method of mounting a winding on a stator for a generator comprising the steps:
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a) using cable for the winding, the winding being wound with a number of cables of predetermined lengths for the intended winding of the stator, b) placing the center of the cable of about half the predetermined length at a location in a slot of the stator representing the middle of the intended coil arc, c) starting from the center of the coil arc, winding the first half cable length onto the stator to form a first coil arc half and part of a complete stator winding turn, and d) winding the remaining half cable length onto the stator starting from the said center of the coil arc and in the opposite direction relative to the winding of the first half cable length so as to form the other half of the coil arc on the stator and another part of the complete stator winding wherein the high-voltage cable has a diameter of about 20 mm to about 200 mm and a conductor area of about 80 mm2 to about 3000 mm2.
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Specification