Constant-temperature and constant-pressure permo-treatment method and device for ultra-clean insulation material

Abstract

The invention discloses a constant-temperature and constant-pressure permeation device for an ultra-clean insulation material. A pot body of a sealed pot is in a long cone shape. An upper opening is formed in the top of the pot body of the sealed pot, and a lower opening is formed in the bottom of the pot body of the sealed pot. The sealed pot is of a double-layer structure and comprises an inner-layer sealed pot and an outer-layer sealed pot. A sensor I is arranged in the inner-layer sealed pot. The top and the bottom of the inner-layer sealed pot are connected with an air pump through air guide pipes. A sensor II is arranged in the outer-layer sealed pot, and the lower end of the outer-layer sealed pot is connected with a water tank through a liquid guide pipe. The upper end of the outer-layer sealed pot is connected with a liquid outflow device through a liquid guide pipe. The outer-layer sealed pot is connected with a box body formed by a heating/cooling system through a wire. According to the constant-temperature and constant-pressure permeation device, the cleanliness of the material in the permeation process is guaranteed, the ultra-clean insulation material is prevented from oxidization and discolouration through inert gas, it is guaranteed that crosslinked polyethylene is in a constant-temperature and constant-pressure state all the time, permeation of a cross-linking agent is more stable and even, and therefore the process stability of crosslinked polyethylene is guaranteed.

Description

technical field [0001] The invention relates to a constant temperature and constant pressure infiltration treatment method and device for ultra-clean insulating materials, in particular to a constant temperature and constant pressure infiltration treatment method for high-voltage and ultra-high-voltage ultra-clean insulating materials and a sealed tank body. Background technique [0002] With the rapid development of the national economy, the demand for electricity is more urgent. In the future, high-voltage and extra-high-voltage cables will play an important role in urban power grids. However, at present, my country's ultra-clean insulating materials for high-voltage and extra-high-voltage cables all rely on imports. The reason is mainly that the dispersion uniformity of crosslinking agent, oxidative discoloration, precipitation of crosslinking agent, and control of impurity level during the processing of domestic resins affect the performance indicators of the product. The...

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Problems solved by technology

But this method is inefficient, and the problem is solved only when it is found. At the same time, a lot of raw materials are wasted, and the vacuum degree cannot be guaranteed in the process of processing impurities.

On the other hand, in order to achieve the airtightness of the whole process equipment, this method requires higher requirements on raw materials. In raw material manufacturers, the purity of raw materials must be strictly monitored and screened, which greatly increases the production cost of raw material manufacturers.

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