A method and device for treating crosslinking agent for high-voltage ultra-high-voltage ultra-clean insulating materials

A technology of insulating material and treatment method, which is applied in the melt filtration treatment of cross-linking agent (DCP), and the gas is sprayed into the field of atomization, which can solve the problems of decomposition, uneven heating distribution, and need to import, and achieve the effect of ensuring accuracy.

Active Publication Date: 2018-06-26
QINGDAO HANHE CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, during the mixing process of polyethylene in my country's medium and low pressure cross-linked polyethylene products, cross-linking agent powder is directly added, and heating and melting are carried out during the mixing process, which leads to uneven distribution of cross-linking agent melting, and due to heating, fusion and mixing. The temperature distribution is uneven, resulting in oxidation or even decomposition of the cross-linking agent, which eventually leads to the scrapping of the cross-linked polyethylene material. Low-pressure cross-linked polyethylene materials, resulting in the situation that high-pressure ultra-high-pressure cross-linked polyethylene still needs to be imported

Method used

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  • A method and device for treating crosslinking agent for high-voltage ultra-high-voltage ultra-clean insulating materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 1 As shown, taking the process of melting, filtering, atomizing and adsorbing polyethylene for the crosslinking agent used in the manufacture of 500kV ultra-high voltage ultra-clean insulating materials as an example, the specific process is as follows:

[0030] Add the cross-linking agent (DCP) at normal temperature into the melting tank 1, heat the melting tank 1 to 38°C through the temperature controller 6 to melt the cross-linking agent, and keep the temperature. Flow through the filter device 2 under the action, place 2 layers of 400 mesh filter screens in the filter device 2, and the crosslinking agent after melting flows into the storage device 3 through the filter device 2. At this time, it is an ultra-clean crosslinking agent. The ambient temperature is consistent with the temperature of the outer melting tank 1, and is controlled by the temperature controller 6. The self-weight of the molten ultra-clean crosslinking agent flows into the metering d...

Embodiment 2

[0032] Such as figure 1 As shown, the process for producing 500kV ultra-high voltage ultra-clean insulating material cross-linking agent melt filtration atomization adsorption polyethylene is as follows:

[0033] Add the cross-linking agent (DCP) at normal temperature into the melting tank 1, heat the melting tank 1 to 39°C through the temperature controller 6 to melt the cross-linking agent, and keep the temperature. Flow through the filter device 2 under the action, place 3 layers of 500 mesh filter screens in the filter device 2, and the crosslinking agent after melting flows into the storage device 3 through the filter device 2. At this time, it is an ultra-clean crosslinking agent. The ambient temperature is consistent with the temperature of the outer melting tank 1, and is controlled by the temperature controller 6. The self-weight of the molten ultra-clean crosslinking agent flows into the metering device 4 for metering, and weighs according to the ratio of adding 2 pa...

Embodiment 3

[0035] Such as figure 1 As shown, the process for producing 500kV ultra-high voltage ultra-clean insulating material cross-linking agent melt filtration atomization adsorption polyethylene is as follows:

[0036] Add the cross-linking agent (DCP) at normal temperature into the melting tank 1, heat the melting tank 1 to 40°C through the temperature controller 6 to melt the cross-linking agent, and keep the temperature. Flow through the filter device 2 under the action, place 4 layers of 600 mesh filter screens in the filter device 2, and the crosslinking agent after melting flows into the storage device 3 through the filter device 2. At this time, it is an ultra-clean crosslinking agent. The ambient temperature is consistent with the temperature of the outer melting tank 1, and is controlled by the temperature controller 6. The self-weight of the molten ultra-clean crosslinking agent flows into the metering device 4 for metering, and weighs according to the ratio of adding 2 pa...

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Abstract

Provided are a method and device for processing DCP of a high to ultrahigh voltage and ultra-clean insulating material. The method includes the following steps that (1) liquid is heated to melt, (2) deal-load filtering and storage are conducted, and (3) metering and gas shield injection are conducted jointly. The invention further discloses the device included in the method. The device comprises a melting tank, a filtering device, a storage tank, a metering device and a gas injection device, wherein the lower end of the melting tank is in threaded connection with the filtering device in a sealed mode; the storage tank is in sealed connection with the lower end of the filtering device; the metering device and the gas injection device are tightly connected into a whole; and the outer layers of the filtering device, the melting tank and the storage tank are provided with constant-temperature hoods with the temperature controlled by a temperature controller. The method and device can guarantee the dispersion uniformity and crosslinking stability of crosslinked polyethylene, improve the high electric field resistance of crosslinked polyethylene, meet the use demand for long-term operation of ultrahigh voltage cables, make DCP permeate into polyethylene particles by over 80%, and finally obtain crosslinked polyethylene ultra-clean materials meeting the condition to manufacture high to ultrahigh voltage cables.

Description

technical field [0001] The invention relates to a method and device for melting and filtering cross-linking agent (DCP) and gas injection and atomization, in particular to a method and device for processing cross-linking agent of high-voltage, ultra-high-voltage and ultra-clean insulating materials. Background technique [0002] Cross-linking agent (DCP) is an indispensable additive in cross-linked cable insulation materials. As the demand for cross-linked cables increases and the voltage level increases, the amount of cross-linked polyethylene is increasing. At present, in the process of mixing polyethylene for medium and low pressure cross-linked polyethylene products in my country, cross-linking agent powder is directly added, and heating and melting are carried out during the mixing process, which leads to uneven distribution of cross-linking agent melting. The temperature distribution is uneven, resulting in oxidation or even decomposition of the cross-linking agent, whi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29B7/80B29B7/94
Inventor 张涛宋智彬陈沛云何千山
Owner QINGDAO HANHE CABLE
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