Tin-plated phosphor bronze wire for transformers

Abstract

The utility model discloses a tinned phosphor bronze wire for transformer, including support core line, support core line is elastic wire, line body, the extension direction of line body is spiral, and the axis of spiral shape coincides with the axis of support core line, insulating sheath, the periphery of support core line and line body is sleeved in. The utility model discloses elastic support core line is used for supporting line body, makes it keep spiral shape structure, when the tensile force, support core line and line body can all pass through the tensile and reset of self and offset the tensile force received to reduce the probability that line body happens deformation or breaks down, promote tinned phosphor bronze wire's anti -vibration performance.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tinned phosphor bronze wire technical field especially relates to a tinned phosphor bronze wire for transformer. BACKGROUND

[0002] Tinned phosphor bronze wire is a kind of alloy material, it has excellent wear resistance, corrosion resistance and conductivity, is widely used in electronic communication, mechanical manufacturing etc. to improve the reliability and service life of product.

[0003] The existing tinned phosphor bronze wire is used on transformer, due to the vibration of transformer in the operation process because electromagnetic force etc. factor, lead to tinned phosphor bronze wire also vibrate, line body vibrates and needs to bear tensile force, and also can be worn with peripheral components, lead to line body deformation damage.

[0004] Therefore, it is necessary to improve the tinned phosphor bronze wire in prior art. UTILITY MODEL CONTENTS

[0005] The utility model is to overcome the defects in the prior art, provide a tinned phosphor bronze wire for transformer, has played the effect of improving tinned phosphor bronze wire vibration resistance.

[0006] To realize the above-mentioned purpose, the specific technical scheme of the tinned phosphor bronze wire for transformer of the utility model is as follows:

[0007] A tinned phosphor bronze wire for transformer, comprising:

[0008] Support core wire, the support core wire is elastic wire;

[0009] Line body, the extension direction of the line body is spiral, and the axis of the spiral shape is coincident with the axis of the support core wire;

[0010] Insulating sheath, the insulating sheath is sleeved on the periphery of the support core wire and the line body.

[0011] Preferably, in order to make support core wire have better elasticity and better heat conductivity, the support core wire has tubular structure made of heat-conducting insulating silicone rubber.

[0012] Preferably, in order to improve the wear resistance of the insulating sheath, the insulating sheath includes an insulating protective layer, and the outer surface of the insulating protective layer is uniformly distributed with wear-resistant particles.

[0013] Preferably, in order to improve the wear resistance of the insulating protective layer, wear-resistant particles are embedded in the interior of the insulating protective layer, and the wear-resistant particles are uniformly distributed.

[0014] Preferably, in order to improve the protection effect of the insulation protective layer on the wire body, the insulation protective layer is a cross-linked polyethylene layer, and the wear-resistant particles are aluminum oxide ceramic particles.

[0015] Preferably, in order to improve the tensile capacity of the insulation protective layer, an inner surface of the insulation protective layer is provided with a tensile layer.

[0016] Preferably, in order to improve the strength of the insulation protective layer, the tensile layer is a mesh structure woven by polyimide fibers.

[0017] Preferably, in order to slow down the wear speed of the insulation protective layer, an outer surface of the insulation protective layer and an inner surface of the tensile layer are both provided with a lubricating layer.

[0018] Preferably, in order to improve the wire conductivity and corrosion resistance of the wire body, the wire body comprises an inner core, and an outer surface of the inner core is sequentially provided with a nickel plating layer and a tin plating layer.

[0019] The tinned phosphor bronze wire for transformer has the following advantages: the elastic support core wire is used for supporting the wire body, so that the wire body maintains a spiral structure; when subjected to a tensile force, the support core wire and the wire body can offset the tensile force through their own stretching and resetting, thereby reducing the probability of deformation or rupture of the wire body and improving the vibration resistance of the tinned phosphor bronze wire. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 FIG. 1 is a structural schematic view of the tinned phosphor bronze wire of the present application;

[0021] Figure 2 FIG. 2 is an enlarged view of part A of FIG. 1; Figure 1

[0022] Figure 3 FIG. 3 is a layered structure schematic view of the wire body of the present application;

[0023] Figure 4 FIG. 4 is a connection structure schematic view of the support core wire and the wire body of the present application;

[0024] Marked in the figure: 1, wire body; 2, support core wire; 3, insulation sheath; 101, inner core; 102, nickel plating layer; 103, tin plating layer; 301, lubricating layer; 302, insulation protective layer; 303, wear-resistant particles; 304, tensile layer. DETAILED DESCRIPTION

[0025] The specific implementation of the present application will be further described below in combination with the drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present application, and cannot be used to limit the protection scope of the present application.

[0026] ​The "top surface", "bottom", and "bottom surface" are referenced to the normal use state of the tinned phosphor bronze wire, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model.

[0027] As shown in Figure 1 and 4 , a tinned phosphor bronze wire for a transformer includes a supporting core wire 2, the supporting core wire 2 being an elastic wire; a wire body 1, the extension direction of the wire body 1 being a spiral shape, the axis of the spiral shape coinciding with the axis of the supporting core wire 2; and an insulating sheath 3, the insulating sheath 3 being sleeved on the periphery of the supporting core wire 2 and the wire body 1.

[0028] The tinned phosphor bronze wire described above is suitable for use in a vibrating environment inside a transformer. The elastic supporting core wire 2 can support the wire body 1, so that the wire body 1 maintains a spiral structure. The insulating sheath 3 plays a role of insulation and protection of the wire body 1. The insulating sheath 3 is attached to the supporting core wire 2 and the wire body 1, so as to improve the tightness of the connection between the three and the stability of the overall structure of the tinned phosphor bronze wire. In a vibrating environment, the elastic supporting core wire 2 and the spiral wire body 1 can both be elongated or shortened along the direction of the tensile force, so as to offset the tensile force and prevent the wire body 1 from being deformed or broken, thereby improving the overall anti-vibration performance of the tinned phosphor bronze wire. In a vibrating environment, the wire bodies 1 collide with each other, and the insulating sheath 3 can protect the wire bodies 1, reduce the mutual abrasion between the wire bodies 1, and prolong the service life of the wire bodies 1. At the same time, the elastic supporting core wire 2 can also offset part of the force of the mutual collision between the wire bodies 1, thereby reducing the stress on the wire bodies 1 and prolonging the service life of the tinned phosphor bronze wire.

[0029] Further improvement is that, as shown in Figure 1 , the supporting core wire 2 has a tubular structure made of heat-conducting insulating silicone rubber.

[0030] Specifically, the tubular supporting core wire 2 can maintain good elasticity while reducing the amount of material used, thereby reducing production costs. The heat-conducting insulating silicone rubber has good temperature resistance, elasticity, and insulation performance. The addition of aluminum oxide heat-conducting filler inside the heat-conducting insulating silicone rubber makes it also have good heat-conducting performance. In this way, the supporting core wire 2 can not only provide good support for the wire body 1, but also conduct and dissipate heat on the wire body 1, thereby improving the heat dissipation effect on the wire body 1. The tubular supporting core wire 2 can also circulate air inside, which can further improve the heat dissipation effect on the wire body 1.

[0031] Further improvement is that, as shown in Figure 2As shown, the insulating sheath 3 comprises an insulating protective layer 302, and the outer surface of the insulating protective layer 302 is uniformly distributed with wear-resistant particles 303. The high hardness, high strength and good anti-friction performance of the wear-resistant particles 303 can bear the main friction force in the process of friction and wear of the insulating sheath 3, thereby reducing the wear of the insulating sheath 3, and further improving the wear resistance of the tinned phosphor bronze wire, so that it can be better applied to the vibration environment of the transformer.

[0032] Further improvement is that, as shown in Figure 2 As shown, the wear-resistant particles 303 are embedded in the insulating protective layer 302 and are uniformly distributed. When the wear-resistant particles 303 on the surface of the insulating protective layer 302 are worn out, the wear-resistant particles 303 inside the insulating protective layer 302 are exposed, and can still bear the main friction force in the process of friction and wear of the insulating sheath 3, thereby reducing the wear of the insulating sheath 3, and continuously maintaining the wear resistance of the tinned phosphor bronze wire and prolonging its service life.

[0033] Further improvement is that the insulating protective layer 302 is a cross-linked polyethylene layer, and the wear-resistant particles 303 are alumina ceramic particles. Cross-linked polyethylene has good heat resistance, mechanical properties, insulation and corrosion resistance, which can effectively improve the performance of the insulating protective layer 302, improve the protection effect of the insulating protective layer 302 on the wire body 1, and prolong the service life of the tinned phosphor bronze wire; and alumina ceramic has high hardness and good insulation performance and chemical stability, which can be better mixed with cross-linked polyethylene to form an insulating protective layer 302 with excellent insulation, corrosion resistance and wear resistance.

[0034] Further improvement is that, as shown in Figure 2 As shown, the inner surface of the insulating protective layer 302 is provided with a tensile layer 304; and the tensile layer 304 is a mesh structure woven by polyimide fibers. The polyimide fibers have good thermal stability, tensile strength, corrosion resistance and insulation performance, and the mesh structure formed by the polyimide fibers can uniformly cover the inner surface of the insulating protective layer 202 and improve the tensile strength of the insulating protective layer 202, thereby reducing the deformation of the insulating sheath 3 under the action of vibration tensile force, protecting the wire body 1, and finally improving the tensile performance of the tinned phosphor bronze wire.

[0035] Further improvement is that, as shown in Figure 2As shown, the outer surface of the insulation protection layer 302 and the inner surface of the tensile layer 304 are both provided with a lubricating layer 301. The lubricating layer 301 is a polytetrafluoroethylene layer, which has strong corrosion resistance and performance and a low friction coefficient. By providing the lubricating layer 301, the friction between the two tinned phosphor bronze wires can be reduced when they rub against each other, thereby reducing the wear of the tinned phosphor bronze wires. Meanwhile, the lubricating layer 301 provided on the outermost layer can also improve the corrosion resistance of the tinned phosphor bronze wires. The lubricating layer 301 provided on the inner layer can reduce the friction between the support core wire 2 and the wire body 1 and the insulation sheath 3 when vibrating, thereby reducing the wear of the tinned phosphor bronze wires themselves and prolonging the service life of the tinned phosphor bronze wires.

[0036] Further improvements are, for example, Figure 3 As shown, the wire body 1 includes an inner core 101, and the outer surface of the inner core 101 is sequentially provided with a nickel plating layer 102 and a tin plating layer 103. The phosphor bronze wire has good mechanical properties, wire properties and corrosion resistance, and can be made into an electric wire for the production of a transformer. The nickel plating layer 102 and the tin plating layer 103 on the wire can improve its corrosion resistance, and the tin plating layer 103 can also improve its welding performance, thereby effectively improving the performance of the wire body 1.

[0037] It can be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the utility model.

Claims

1. A tinned phosphor bronze wire for transformers, characterized by, Comprise: A support core wire (2) which is an elastic wire; A wire body (1) whose extension direction is a spiral shape, the spiral shape's axis line coincides with the support core wire (2)'s axis line; An insulating sheath (3) which is sleeved on the periphery of the support core wire (2) and the wire body (1).

2. The tinned phosphor bronze wire for a transformer according to claim 1, characterized by, The support core wire (2) has a tubular structure made of heat-conducting insulating silicone rubber.

3. The tinned phosphor bronze wire for a transformer according to claim 1, characterized by, The insulating sheath (3) comprises an insulating protective layer (302), the outer surface of the insulating protective layer (302) is uniformly distributed with wear-resistant particles (303).

4. The tinned phosphor bronze wire for a transformer according to claim 3, characterized by The inner surface of the insulating protective layer (302) is provided with a tensile layer (304).

5. The tinned phosphor bronze wire for a transformer according to claim 4, characterized by The tensile layer (304) is a mesh structure woven by polyimide fibers.

6. The tinned phosphor bronze wire for transformers according to claim 4, characterized by The outer surface of the insulating protective layer (302) and the inner surface of the tensile layer (304) are both provided with a lubricating layer (301).

7. The tinned phosphor bronze wire for transformers according to claim 1, characterized by, The wire body (1) comprises an inner core (101), the outer surface of the inner core (101) is sequentially provided with a nickel plating layer (102) and a tin plating layer (103).

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