Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of production method of insulating tubular busbar

A production method and technology of insulating tubes, applied in the direction of conductor/cable insulation, manufacture of rigid tube cables, cable/conductor manufacturing, etc., can solve the problems of partial discharge influence, prone to micropores, economic loss, etc., to reduce micro The generation of holes, the improvement of temperature resistance, and the effect of ensuring insulation performance

Active Publication Date: 2020-04-24
JIANGSU WONEN ELECTRIC TECH
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the production process of this method, it is easy to have defects such as micropores, breakdown, and impact on partial discharge.
[0004] In view of the above phenomenon, the patent CN 107731417 A discloses a production method of insulating pipe busbar, including the steps of pouring insulating material, curing, and winding shielding copper wire. However, there are still some disadvantages in this production method: the strength of the insulating tube bus produced by this production method is not high, and the temperature resistance is poor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of production method of insulating tubular busbar
  • A kind of production method of insulating tubular busbar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The production method of the insulating tubular busbar in this embodiment, the production method comprises the following steps:

[0030] Step 1: Take a metal tubular conductor, and extrude an inner shielding layer with a thickness of 1mm and a cross-linked polyethylene insulating layer with a thickness of 3mm on the outer surface of the conductor from the inside to the outside;

[0031] Step 2: After the cross-linked polyethylene insulation layer is extruded on the outer surface of the conductor, cool to room temperature, and then put a heat shrink protection on the outer wall of the conductor extruded with the inner shielding layer and the cross-linked polyethylene insulation layer Then, heat the heat-shrinkable protective sleeve with a drying gun to shrink it, and then vacuumize the space between the heat-shrinkable protective sleeve and the conductor, so that the heat-shrinkable protective sleeve is tightly attached to the outer wall of the conductor;

[0032] Step 3...

Embodiment 2

[0036] The production method of the insulating tubular busbar in this embodiment, the production method comprises the following steps:

[0037] Step 1: Take a metal tubular conductor, and extrude an inner shielding layer with a thickness of 2mm and a cross-linked polyethylene insulating layer with a thickness of 2mm on the outer surface of the conductor from the inside to the outside;

[0038] Step 2: After the cross-linked polyethylene insulation layer is extruded on the outer surface of the conductor, cool to room temperature, and then put a heat shrink protection on the outer wall of the conductor extruded with the inner shielding layer and the cross-linked polyethylene insulation layer Then, heat the heat-shrinkable protective sleeve with a drying gun to shrink it, and then vacuumize the space between the heat-shrinkable protective sleeve and the conductor, so that the heat-shrinkable protective sleeve is tightly attached to the outer wall of the conductor;

[0039] Step 3...

Embodiment 3

[0043] The production method of the insulating tubular busbar in this embodiment, the production method comprises the following steps:

[0044] Step 1: Take a metal tubular conductor, and extrude an inner shielding layer with a thickness of 1mm and a cross-linked polyethylene insulating layer with a thickness of 2mm on the outer surface of the conductor from the inside to the outside;

[0045] Step 2: After the cross-linked polyethylene insulation layer is extruded on the outer surface of the conductor, cool to room temperature, and then put a heat shrink protection on the outer wall of the conductor extruded with the inner shielding layer and the cross-linked polyethylene insulation layer Then, heat the heat-shrinkable protective sleeve with a drying gun to shrink it, and then vacuumize the space between the heat-shrinkable protective sleeve and the conductor, so that the heat-shrinkable protective sleeve is tightly attached to the outer wall of the conductor;

[0046] Step 3: ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a production method of an insulated tubular busbar. The production method comprises the following steps that 1, a metal tubular conductor is taken, and the outer surface of the conductor is wrapped with an inner shielding layer and a cross-linked polyethylene insulation layer in an extruded mode; 2, after extrusion-wrapping is completed, the conductor is cooled to the roomtemperature, and then a heat shrinkage protection sleeve is mounted on the outer side wall of the conductor in a sleeving mode; 3, the conductor subjected to heat shrinkage is fed into a special cross-linking tank, the special cross-linking tank is filled with nitrogen, and thus the pressure in the special cross-linking tank is maintained at 0.8-0.9 MPa; 4, after the pressure in the special cross-linking tank is stabilized, the special cross-linking tank is heated to 180-200 DEG C, heat preservation is conducted for 8-12 min, then the special cross-linking tank is cooled to 30-50 DEG C, and then the special cross-linking tank is depressurized to the normal pressure; and 5, when the special cross-linking tank is restored to the normal pressure, the conductor in the special cross-linking tank is taken out, and a finished product is prepared. The production method of the insulated tubular busbar has the advantages that through the production method, the temperature resistance property and strength, especially the creep strength, of the product can be improved, and the change of the strength of the product along with the use time is not significant.

Description

technical field [0001] The invention belongs to the technical field of power transmission equipment, and in particular relates to a production method of an insulating tubular busbar. Background technique [0002] Tubular busbar is a high-voltage current transmission device with high efficiency. Compared with traditional rectangular busbar, tubular busbar has good skin effect, large carrying capacity per unit section, good heat dissipation conditions, large allowable stress, large span, and mechanical High strength, strong electrical insulation performance, high stability of the main insulating material, reasonable insulation process and other characteristics can effectively ensure the reliability of power supply of the transmission and transformation grid. With the rapid and steady growth of the national economy, social power consumption is rising linearly, which makes the main transformer capacity of the substation continue to increase, and the rated current of the low-volt...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/004H01B13/14H01B13/22H01B13/24
Inventor 张小兵田塨
Owner JIANGSU WONEN ELECTRIC TECH