A light motor winding wire for a submersible pump

Abstract

A light motor winding wire for a submersible oil pump is characterized in that the wire body consists of a conductor, an insulation layer and a sheath layer; the nylon sheath has good comprehensive properties, including mechanical properties, heat resistance, wear resistance, chemical resistance and self-lubrication, and has a low friction coefficient, a certain flame retardancy, and is easy to process. The surface has a mesh structure suitable for filling and reinforcing modification with glass fiber and other fillers to improve performance and expand the scope of application. The surface is smooth, the outer diameter of the extruded package is uniform, the two layers have high concentricity, and the nylon and PVC insulation are firmly bonded, so that the winding wire has excellent waterproof performance and scratch resistance. The structure is simple, the cable outer diameter is small, and the waterproof construction of the oil pump winding wire is convenient. It has the characteristics of ultra-thin, oil-resistant, waterproof, wear-resistant, and strong electric field-resistant, suitable for use in different environments, and has good application value.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a light motor winding wire for a submersible pump. Background Art

[0002] A submersible pump is a device used to extract oil from oil wells. It is an important component of oil wells. The submersible pump integrates the pump body and the motor, and transmits electrical energy to the motor through cables, thereby realizing the overall pumping work and pushing the liquid from the suction end to the output end.

[0003] The bending radius of conventional motor winding wires requires that a single wire will not jump out when entering the slot, and the surface must be smooth. Due to the limited winding space, the insulation and sheath must be as thin as possible while meeting the performance requirements. The motor winding wires used in submersible pumps are used in marine geological mining in a very harsh working environment, with a high temperature resistance level. The deep water pressure resistance, brine resistance and oil resistance requirements of the winding wires are far beyond those of conventional winding wires (enameled wires), which in turn conflicts with the thin sheath and insulation requirements of the motor winding wires. Therefore, conventional winding wires can hardly meet the use requirements of submersible pump motors. They have the disadvantages of short service life, poor water resistance and corrosion resistance, large rebound force when entering the slot and difficulty in bending. At the same time, the selection of winding wire sheath and insulation thickness is also a headache. Summary of the invention

[0004] The utility model provides a light motor winding wire for a submersible pump, which has good water resistance and corrosion resistance, meets the performance requirements of the motor winding wire, has a long service life, is easy to bend, and has good stability after being inserted into a slot.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A light motor winding wire for a submersible pump, characterized in that the wire body is composed of a conductor, an insulating layer and a sheath layer;

[0007] The conductor is an annealed soft copper solid conductor, and an insulating layer is extruded outside the conductor;

[0008] The insulating layer is made of flexible nitrile polyvinyl chloride elastomer material, the thickness of the insulating layer is 0.2mm-0.3mm, and a sheath layer is extruded outside the insulation;

[0009] The sheath layer is a nylon sheath, and the thickness of the sheath layer is 0.05mm-0.10mm.

[0010] A further solution is: in order to increase the structural stability between the sheath and the insulation, a thin adhesive layer with a thickness of 0.02 mm-0.05 mm is further provided between the sheath layer and the insulation layer.

[0011] A further solution is that the minimum bending radius of the wire is 4D.

[0012] The test shows that the wire body can withstand water pressure of no more than 10kgf / cm for a long time, and can be immersed in water for 3000V / min without breakdown. The winding wire has a resilience of 3°-5° and a service life of no less than two years at a temperature of 90°C.

[0013] The utility model has the following advantages: the nylon sheath has good comprehensive properties, including mechanical properties, heat resistance, wear resistance, chemical resistance and self-lubrication, and has a low friction coefficient, a certain flame retardancy, is easy to process, has a mesh structure on the surface suitable for filling and reinforcing modification with glass fiber and other fillers, improves performance and expands the scope of application, has a smooth surface, and the outer diameter of the extruded package is uniform and consistent, the two layers have high concentricity, and the nylon and PVC insulation are firmly bonded, so that the winding wire has excellent waterproof performance and scratch resistance, the structure is simple, the outer diameter of the cable is small, and the waterproof construction of the oil pump winding wire is convenient, and it has the characteristics of ultra-thin, oil resistance, waterproof, wear resistance, and strong electric field resistance, is suitable for use in different environments, and has good application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Example

[0016] As shown in the figure, a light motor winding wire for a submersible pump, wherein the wire body is composed of a conductor 1, an insulating layer 2 and a sheath layer 3;

[0017] The conductor 1 is an annealed soft copper solid conductor, and an insulating layer 2 is extruded outside the conductor 1;

[0018] The insulating layer 2 is made of a flexible nitrile polyvinyl chloride elastomer material, the thickness of the insulating layer 2 is 0.2mm-0.3mm, and the insulating layer 2 is extruded with a sheath layer 3;

[0019] The sheath layer 3 is a nylon sheath, and the thickness of the sheath layer 3 is 0.05mm-0.10mm.

[0020] In order to increase the structural stability between the sheath and the insulation, a thin adhesive layer 4 is further included between the sheath layer 3 and the insulation layer 2, with a thickness of 0.02 mm-0.05 mm.

[0021] The minimum bending radius of the wire is 4D.

Claims

1. A light motor winding wire for a submersible pump, characterized in that The wire body consists of a conductor, an insulation layer and a sheath layer; The conductor is an annealed soft copper solid conductor, and an insulating layer is extruded outside the conductor; The insulating layer is made of flexible nitrile polyvinyl chloride elastomer material, the thickness of the insulating layer is 0.2mm-0.3mm, and a sheath layer is extruded outside the insulation; The sheath layer is a nylon sheath, and the thickness of the sheath layer is 0.05mm-0.10mm.

2. A light motor winding wire for a submersible pump as claimed in claim 1, characterized in that A thin adhesive layer is also provided between the sheath layer and the insulating layer, with a thickness of 0.02 mm to 0.05 mm.

3. A light motor winding wire for a submersible pump as claimed in claim 1 or 2, characterized in that The minimum bending radius of the wire is 4D.

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