CN2620357Y

CN2620357Y - Lead cable for oil submersible pump

Info

Publication number: CN2620357Y
Application number: CN 02253293
Authority: CN
Inventors: 刘更民; 李作林; 佟长瞬
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-09-06
Filing date: 2002-09-06
Publication date: 2004-06-09
Anticipated expiration: 2012-09-06

Abstract

Disclosed is a new submersible oil pump connection cable, comprising an inner insulating layer made of high temperature resistant insulation material PFA, an outer insulating layer made of modified polypropylene, a closed layer composed of aluminum-plastic tape (longitudinally wrapped), a shield made of modified polypropylene, an inner protective pad layer made of high-density thick cotton cloth and single-core cables which use single-strand oxygen-free copper wires as conductors. Three single-core cables are laid in parallel; an outer protection layer formed by runway-type armored steel tape; the inner insulating layer and the outer inner insulating layer from a combined insulation; the PFA material of the inner insulating layer has a more stable performance under high temperature and the working temperature can be raised to 250 Celsius system; the modified polypropylene of the outer insulating layer can maintain good insulation performance even in the softening or liquefaction state; the longitudinally wrapped aluminum-plastic tape of the closed layer is of sealing and shielding effects.

Description

Novel oil-immersed pump jump lead

The utility model relates to petroleum industry department, a kind of novel oil-immersed pump jump lead, being used for the power cable end is connected with the transition of submersible electric machine with oil, this cable can improve working temperature to 250 ℃ under the prerequisite that does not increase production cost, anti-cracking, anti-partial discharge and withstand voltage properties have been strengthened, good sealing state also can delay the aging of modified polypropene, thereby prolongs the useful life of cable.

The jump lead that uses is positioned at the power cable end at present, is connected with submersible electric machine with oil, is about 35m, because the sectional area (13.2mm of jump lead conductor ²) less than power cable (20mm ²More than), and ampacity is constant, is in the power supply end that voltage descends again, causes conductor temperature to raise, its operational environment also is the highest oil well lower end of temperature in addition, so homemade jump lead generally all is as insulating material with F46.The working temperature of F46 can satisfy the heatproof needs basically about 200 ℃, but the F46 material ftractures when reaching certain thickness easily, thereby causes partial discharge and cable can't be repaired, and has not only wasted cable but also has influenced to recover the oil and produced.The jump lead that the U.S. produces is to make insulating material with second third glue, though there is not cracking phenomena, only can heatproof 150 ℃, heat ageing easily, lack useful life.

In order to overcome above-mentioned shortcoming, a kind of novel oil-immersed pump jump lead is proposed.

The purpose of this utility model is that a kind of novel oil-immersed pump jump lead will be provided, the inner insulating layer of its structure for constituting by high-temperature insulation material PFA, the external insulation layer that modified polypropene constitutes, the envelope that plastic-aluminum band (vertical bag) constitutes is covered layer, the sheath that modified polypropene constitutes, the interior protection bed course that the high density grey sheeting constitutes, sub-thread anaerobic copper cash are made conductor and are constituted single core cable; Three single core cables are arranged in parallel, and constitute external protection outside with racetrack armouring tape armouring.This structure has anti-cracking, anti-partial discharge and withstand voltage properties, and good sealing state also can delay the aging of modified polypropene, thereby prolongs the useful life of cable.

The utility model provides novel oil-immersed pump jump lead to have 2 features.The insulation of first composite type, inner insulating layer adopts the PFA material that at high temperature performance is more stable, can make working temperature bring up to 250 ℃, in order to prevent cracking and to reduce cost, external insulation layer is used modified polypropene instead, even if still can keep the good insulation performance performance under softening or liquefaction.It two is to have increased envelope to cover layer, the plastic-aluminum band of vertical bag has two effects here concurrently, first is a sealing process, be the loss of internal resistance external insulation layer under the condition of high temperature, the immersion of extrernal resistance profit, to keep the insulation property of modified polypropene, second is shielding action, be uniform electric field, prevent that electric charge from causing discharge and damaging insulation in certain local accumulation.In addition, the sheath that is compressed into modified polypropene is down isolated steel band and protection bed course (high density grey sheeting), also can bring into play sealing and insulating effect.

Concrete structure of the present utility model is provided by the following examples and accompanying drawing.

The structure chart and the embodiment of a kind of novel oil-immersed pump jump lead that accompanying drawing 1 provides for the utility model.

Referring to accompanying drawing 1, the utility model provides novel oil-immersed pump jump lead, comprises external protection 1, external insulation layer 2, and envelope is covered layer 3, sheath 4, interior protection bed course 5, inner insulating layer 6, conductor 7.

Inner insulating layer 6 is high-temperature insulation material PFA; the material of external insulation layer 2 is a modified polypropene; the material that envelope is covered layer 3 is plastic-aluminum band (a vertical bag); sheath 4 modified polypropenes constitute; the material of interior protection bed course 5 constitutes for the high density grey sheeting; the material of conductor 7 is the anaerobic copper cash, and external protection 1 is an armouring tape.Inner insulating layer 6, external insulation layer 2, envelope is covered layer 3, sheath 4, interior protection bed course 5, conductor 7 constitutes single core cable; Three single core cables are arranged in parallel, and constitute external protection 1 outside with racetrack armouring tape armouring.This structure inner insulating layer 6 adopts the PFA material that at high temperature performance is more stable, can make working temperature bring up to 250 ℃, in order to prevent cracking and reduce cost that external insulation layer is used modified polypropene instead, even if under softening or liquefaction, still can keep the good insulation performance performance.The envelope that increases is covered layer 3, the plastic-aluminum band of vertical bag has two effects concurrently, first is a sealing process, be the loss of internal resistance external insulation layer under the condition of high temperature, the immersion of extrernal resistance profit, to keep the insulation property of modified polypropene, second is shielding action, be uniform electric field, prevent that electric charge from causing discharge and damaging insulation in certain local accumulation.

Basic thought of the present utility model and illustrated embodiment more than have been described in detail; the person skilled in the art; do not deviating under the spirit of the present utility model and can make many changes, protection range of the present utility model is determined by additional claims and equivalent thereof the utility model.

Claims

1. novel oil-immersed pump jump lead, it is characterized in that the inner insulating layer that constitutes by high-temperature insulation material PFA, the external insulation layer that modified polypropene constitutes, the envelope that the plastic-aluminum band of vertical bag constitutes is covered layer, the sheath that modified polypropene constitutes, the interior protection bed course that the high density grey sheeting constitutes, sub-thread anaerobic copper cash are made conductor and are constituted single core cable; Three single core cables are arranged in parallel, and constitute external protection outside with racetrack armouring tape armouring.

2. a kind of novel oil-immersed pump jump lead according to claim 1 is characterized in that described inner insulating layer and external insulation layer form the composite type insulation.

3. a kind of novel oil-immersed pump jump lead according to claim 1, it is characterized in that described envelope covers the plastic-aluminum band of vertical bag of layer, the sealing loss of external insulation layer under the condition of high temperature and the immersion of profit prevent that electric charge from causing discharge and damaging insulation in certain local accumulation.