CN103500647A - Manufacturing method of coil - Google Patents

Abstract

The invention discloses a method for manufacturing a coil, in particular to a method for manufacturing a high-strength and high-insulation coil. It is characterized in that: the wire and the reinforced insulating tape are wound on the frame synchronously in the same direction, and the wire and the reinforced insulating tape are always arranged in an orderly and staggered order. Compared with the prior art, the present invention adopts a very simple and economical method, on the premise of ensuring the performance requirements of the pulse power coil, so that the coil can withstand greater electromagnetic force without spreading under the working condition of high current, and at the same time The improvement of turn-to-turn and layer-to-layer insulation also enables the coil to withstand higher voltages without breakdown. Compared with traditional coils, the coil structure proposed by the present invention is not much complicated, and the materials used are very common. The combined winding of reinforced insulating tape and coil can greatly improve the coil strength and insulation performance, which can be described as It is a coil manufacturing method that is very effective and worthy of reference for similar scientific research work and production practice.

Description

A method of making a coil

technical field

The invention belongs to the field of pulse power coils, in particular to a method for manufacturing a coil, in particular to a method for manufacturing a high-strength and high-insulation coil.

the

Background technique

Pulse power coils play an indispensable role in the fields of contemporary military, scientific research, and space launch, and their performance is directly related to the working efficiency of the equipment. For example, the coils used in pulsed strong magnetic fields must meet the requirements of high strength, small temperature rise, and concentrated magnetic field. , good insulation characteristics and other requirements, while the coil in the coil gun must first meet the characteristics of high strength, concentrated magnetic field, and high insulation performance, and the temperature rise requirement is relatively small. Although selecting high-quality materials for coil optimization design is also a way to improve coil performance, but before that, the improvement of coil manufacturing technology and methods can do more with less and should be considered first.

The traditional coil winding method is very simple and direct, that is, from the first end of the fixing device, the turns and layers are tightly wound, and after one layer is wound, the direction is directly reversed, and so on, until the completion. There are some problems with such a structure:

(1) Since the coil is wound in sequence and the direction is alternately reciprocating, the voltage between the layers at the end of the coil is very large, which may cause breakdown of the interlayer insulation. Therefore, the problem of overvoltage is the traditional winding of the coil. A major difficulty of the method;

(2) The coil works in the environment of high current and strong magnetic field, and the electromagnetic force it receives is very huge. If only relying on the structure of close winding between turns and close contact between layers, the coil is easy to collapse, scatter and be destroyed under huge force.

The above are the ubiquitous problems that must be faced and solved along with the design and manufacture of pulse transmitting coils. At the same time, they are difficult problems to solve under the traditional single wire winding method. They are always a pair of contradictions with large current and strong magnetic field.

the

Contents of the invention

Based on the above two outstanding problems, the present invention proposes a method for manufacturing high-strength, high-insulation coils. In the winding process, the coils are no longer just a single wire that is tightly arranged and sequentially wound, but also reinforced insulation The tape is wound synchronously and in the same direction with the wire, so that the final coil has a reinforced insulating tape between turns and between layers, and it can also provide a strong fixing effect to prevent the coil from being caused by electromagnetic force during operation. destroyed.

The technical solution adopted in the present invention is: a coil manufacturing method, which is characterized in that the wires and the reinforced insulating tape are wound on the frame synchronously in the same direction, and the wires and the reinforced insulating tape are always arranged in an orderly and staggered order.

Preferably, the width of the reinforced insulating tape is twice or three times the diameter of the wire, so that the coil itself has a clean and beautiful structure under the conditions of high strength and high insulation.

Preferably, each turn of the reinforcing insulating tape is wound with N turns of the wire at the same time, where N≧1.

As a preference, the reinforced insulating tape is either continuously wound on the skeleton, or each turn is intermittently wound on the skeleton, or according to the number of turns of the wire wound, the same The number is intermittently wound on the skeleton, or wound on the skeleton from the disconnected place according to the situation, so that the coil structure is more compact and uniform.

Preferably, the reinforced insulating tape is made of scotch tape, insulating tape, aramid cloth or kevlar.

Preferably, the coil includes a single-layer coil and a multi-layer coil, and for the single-layer coil, at least one layer of reinforced insulating tape is wound around the head end of the coil for each turn.

As a preference, the coil includes a single-layer coil and a multi-layer coil. For a multi-layer coil, after each layer is wound, a layer of the reinforced insulating tape is wound on the layer to further enhance the insulation performance of the coil and improve The ability of a coil to withstand damage from electromagnetic forces.

Preferably, after one turn of wire is wound on the reinforced insulating tape of the previous layer, the end of the wire is fixed with adhesive tape or glue, and then the next turn of reinforced insulating tape is wound.

Preferably, when the reinforced insulating tape is made of scotch tape or insulating tape material, epoxy resin is used to reinforce the coil by vacuum impregnation after the coil is wound and formed, and the coil is completed after being left to dry. It is used to improve the insulation properties of the coil and enhance the structural strength.

As a preference, when the reinforced insulating tape is made of aramid cloth or kevlar cloth, it is reinforced by wet impregnation during the winding process, and epoxy resin material is applied after each layer of coil is wound, and then Continue to wind the lower layer coil, re-apply epoxy, and continue until the coil winding is completed, and finally continue to wind the outer layer of the coil with a reinforced insulating tape, apply epoxy, and further strengthen the coil. After standing and drying, it is completed Coil production, used to improve the insulation properties of the coil and enhance the structural strength.

Compared with the prior art, the manufacturing method of the high-strength and high-insulation coil proposed by the present invention uses a very simple and economical method, and on the premise of ensuring the performance requirements of the pulse power coil, the coil can withstand It can withstand greater electromagnetic force without spreading, and the improvement of inter-turn and interlayer insulation performance also enables the coil to withstand higher voltage without being broken down. Compared with traditional coils, the coil structure proposed by the present invention is not much complicated, and the materials used are very common. The combined winding of reinforced insulating tape and coil can greatly improve the coil strength and insulation performance, which can be described as It is a coil manufacturing method that is very effective and worthy of reference for similar scientific research work and production practice.

the

Description of drawings

Figure 1: A coil and a skeleton with a first turn of wire wound around it according to an embodiment of the present invention.

Fig. 2: The coil and skeleton with the first turn of reinforced insulating tape wound around it according to the embodiment of the present invention.

Fig. 3: Coil and skeleton wound with a second turn of wire according to an embodiment of the present invention.

Fig. 4: Coil and skeleton with a second turn of reinforced insulating tape wound around it according to an embodiment of the present invention.

Fig. 5 is a cross-sectional view of the coil crossing the axis after twenty turns of wire and twenty turns of reinforced insulating tape are wound.

Fig. 6: It is the effect diagram of the coil after winding 20 turns of wire and 20 turns of reinforced insulating tape according to the embodiment of the present invention.

the

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments of the specification.

The present invention proposes a manufacturing method of a high-strength, high-insulation coil. In the coiling process, the coil is no longer just a single wire 2 tightly arranged and sequentially wound, but a reinforced insulating tape 3 is also wound synchronously and in the same direction with the wire 2. system, so that there is a reinforced insulating tape 3 between turns and between layers of the final coil, and it can also provide a strong fixing effect to prevent the coil from being damaged by electromagnetic force during operation.

Please refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the technical solution adopted in the present invention is: a manufacturing method of a coil, the wire 2 and the reinforced insulating tape 3 are synchronously wound on the skeleton in the same direction 1, and ensure that the wires 2 and the reinforced insulating tape 3 are always arranged in an orderly and staggered order, and the width of the reinforced insulating tape 3 is twice or three times the diameter of the wire 2 described above.

Please see Figure 1, the skeleton 1 around which the wire 2 is wound is cylindrical, and its material can be PE pipe, etc., and the outer wall is required to be smooth and have a certain thickness. It is required to have sufficient strength to support the coil wound on it, and to withstand the force exerted by the coil when it is subjected to electromagnetic force.

The wire 2 wound on the skeleton 1 in Fig. 1 is the first turn of the overall coil. In order to show the winding process of the coil more clearly, the drawing starts from the first turn. The following Fig. 2 to Fig. 4 show the process of synchronous winding of the two wires 2 and the reinforced insulating tape 3 in the order of winding respectively. Among them, Figure 2 is the effect diagram of winding the first layer of reinforced insulating tape 3, Figure 3 is the effect diagram of winding the second turn of wire on the basis of the previous one, and Figure 4 is a schematic diagram of the coil after winding the second turn of reinforced insulating tape 3 . Figures 5 and 6 illustrate a 20-turn wire wound by this method, wherein Figure 5 is a cross-sectional view in the middle of the bobbin, and Figure 6 is an overall rendering.

When the coil of this embodiment is manufactured, the wire 2 is wound first for each turn, and after completion, the edge of the reinforced insulating tape 3 is aligned with the edge of the corresponding wire 2, so that the edge of the reinforced insulating tape 3 just completely covers the wire 2 , and then when the next turn of the wire 2 is wound, the wire 2 is placed on the previous turn of the reinforced insulating tape 3 and is wound close to the previous turn of the wire 2, and then a turn of the reinforced insulating tape 3 is wound after completion. In addition, It is also possible to wrap several turns of wire 2 with reinforced insulation 3 tapes per turn as required, because the voltage between turns is relatively small, which can also achieve a good reinforcement effect and is easier to manufacture. By analogy, until the coils of this layer are successively wound tightly and all winding is completed. If you want to go back and continue winding the second layer of coils on this basis, you can consider winding a layer of reinforced insulating tape 3 between the layers to further improve the structure and insulation performance of the coil, and improve the ability of the coil to withstand electromagnetic force damage.

In this embodiment, the reinforcing insulating tape 3 can be wound on the skeleton 1 continuously or wound on the skeleton 1 intermittently for each turn according to actual needs, or the wire turns wound as required number, the same number is intermittently wound on the skeleton 1, or wound on the skeleton 1 from the disconnected place according to the situation, so that the coil structure is more compact and uniform.

The reinforced insulating tape 3 of this embodiment can be selected to be made of transparent tape, insulating tape, aramid cloth or kevlar cloth; when the reinforced insulating tape 3 is made of transparent tape or insulating tape material, if there is a If necessary, the epoxy resin can be used to strengthen the coil by vacuum impregnation after the coil is wound and formed. After the tape is left to dry, the coil is completed, the insulation properties of the coil are improved, and the structural strength is enhanced. When the reinforced insulating tape 3 is made of aramid cloth or kevlar material, if there is a special need, it can be reinforced by wet impregnation during the winding process, and epoxy resin material is applied after each layer of coil is wound. Then continue to wind the lower layer coil, re-apply epoxy, and continue until the coil winding is completed, and finally continue to wind the outer layer of the coil with a reinforced insulating tape, apply epoxy to further strengthen the coil, and let it stand to dry Finally, the coil production is completed, which can improve the insulation properties of the coil and enhance the structural strength.

For a single-layer coil, due to the inherent characteristics of the winding method, the head end of the coil is slightly thinner than the rear part, and the number of layers per turn at the beginning of the coil can be appropriately increased according to the width of the reinforced insulating tape 3, that is, each turn is wound at the head end Multi-layer reinforced insulation tape3. But for the multi-layer coil, since the latter layer is used to wind back from the tail end of the previous layer, the thinner structural feature of the reinforcing insulating tape 3 at the beginning of each layer can be offset, so it is not necessary to consider eliminating it. In addition, if multiple layers of reinforced insulating tape 3 are to be used at the ends, it is necessary to individually select an appropriate width of the reinforced insulating tape 3 according to the situation, so as to achieve a uniform thickness of the entire coil.

The winding of each turn of wire 2 in this embodiment can be assisted by scotch tape, that is, after winding a turn of wire 2 on the reinforced insulating tape of the previous layer, the position of the end of wire 2 can be fixed with tape or glue, etc. , and then carry out the winding of the next turn of the reinforced insulating tape 3 to avoid loosening of the wound wire 2 due to the winding of the reinforced insulating tape 3 .

The above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in this within the scope of protection of the invention.

Claims (10)

1. the manufacture method of a coil is characterized in that: wire (2) and reinforce insulating tape (3) synchronously to be wound in the same way skeleton (1) upper, and guarantee wire (2) and reinforcing insulating tape (3) orderly staggered proper alignment all the time.

2. the manufacture method of coil according to claim 1 is characterized in that: the twice that the width of described reinforcing insulating tape (3) is described wire (2) diameter or three times.

3. the manufacture method of coil according to claim 1, it is characterized in that: the described reinforcing insulating tape of every circle (3) is wound around the described wire of N circle (2), wherein N >=1 simultaneously.

4. according to the manufacture method of claim 1,2 or 3 described coils, it is characterized in that: described reinforcing insulating tape (3) or continuously be wound on described skeleton (1), or being wound on described skeleton (1) of all being interrupted of every circle, or the wire number of turn of coiling as required, adopt being wound on described skeleton (1) of identical quantity interruption, or from the place disconnected, start to be wound on described skeleton (1) again after according to circumstances disconnecting, make described loop construction compacter and even.

5. the manufacture method of coil according to claim 4 is characterized in that: described reinforcing insulating tape (3) adopts adhesive tape, insulating tape, aramid fiber cloth or Kraft granny rag material to be made.

6. the manufacture method of coil according to claim 1, it is characterized in that: described coil comprises single layer coil and lattice coil, for single layer coil, at the coil head end, insulating tape (3) is reinforced in every circle coiling at least one deck.

7. the manufacture method of coil according to claim 1, it is characterized in that: described coil comprises single layer coil and lattice coil, for lattice coil, at every layer of described reinforcing insulating tape of coiling one deck (3) on layer again after complete, further the insulation property of intensifier coil, improve coil and bear the ability that electromagnetic force is destroyed.

8. the manufacture method of coil according to claim 1, it is characterized in that: after the upper complete circle wire (2) of coiling of the reinforcing insulating tape (3) of front one deck, the wire secured the above with adhesive tape or glue (2) end, then carry out the coiling that next circle is reinforced insulating tape (3).

9. the manufacture method of coil according to claim 5, it is characterized in that: when described reinforcing insulating tape (3) adopts adhesive tape or insulating tape material to be made, after turning to type, coil adopts used for epoxy resin vacuum impregnation technology consolidate coil, after standing and drying, completing coil makes, for improving the insulation characterisitic of coil, strengthen structural strength.

10. the manufacture method of coil according to claim 5, it is characterized in that: when described reinforcing insulating tape (3) adopts aramid fiber cloth or Kraft granny rag material to be made, in winding process, adopt the wet dip method to reinforce, often around complete one deck coil, smear epoxide resin material, then continue the coiling inner coil, again smear epoxy, so continue to carry out, until coil winding completes, finally continue to carry out coiling at the outer reinforcing insulating tape that adopts of coil, smear epoxy, further consolidate coil, until after putting drying, completing coil makes, for improving the insulation characterisitic of coil, strengthen structural strength.

Images