Capacitor device, manufacturing process thereof and capacitor voltage transformer

A technology of voltage transformer and capacitor device, which is applied in the field of high-voltage electric power, can solve the problems of bursting of built-in expander and cumbersome manufacturing process, and achieve the effect of avoiding bursting damage

Inactive Publication Date: 2019-04-12
XIAN XD POWER CAPACITOR CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] During the vacuuming process of the capacitor device, if the expander is installed in the capacitor device in advance, the built-in expander will easily burst due to the strong pressure difference; if the expander is installed

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  • Capacitor device, manufacturing process thereof and capacitor voltage transformer
  • Capacitor device, manufacturing process thereof and capacitor voltage transformer
  • Capacitor device, manufacturing process thereof and capacitor voltage transformer

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Embodiment Construction

[0031] The invention discloses a capacitor device and a manufacturing process thereof, and a capacitor voltage transformer provided with the capacitor device. During the manufacturing process of the capacitor device, an expander can be installed first, and then vacuuming, oiling, and The process of pressing and other processes has fewer processing steps and is not easy to damage the expander.

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0033] See Figure 1 to Figure 4 , figure 1 ...

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Abstract

The invention discloses a capacitor device, a manufacturing process thereof and a capacitor voltage transformer provided with the capacitor device. The manufacturing process of the capacitor device comprises the following steps: forming a closed space by the inner wall of a barrel-shaped shell, the inner wall of a cover plate and the outer wall of an expander, wherein the top opening of the barrel-shaped shell is covered with the cover plate, a first through hole is formed in the expander, the expander is arranged inside the barrel-shaped shell to be connected with the cover plate, right now,the expander is a closed component and is in a natural non-expansion state or in a contraction state after a part of gas (or all gas) is extruded; carrying out vacuum-pumping treatment on the closed space; closing the closed space after oil is injected into the closed space; pumping air into the expander so that pressure inside the closed space reaches a preset positive pressure value, and then closing the expander to form the closed component. In the manufacturing process of the capacitor device, the expander can be installed firstly, then the technical treating process of vacuum pumping, oilinjection, pressurization and the like is completed at one time, the manufacturing procedure is less, and the expander is unlikely to damage.

Description

Technical field [0001] The invention relates to the technical field of high-voltage power, in particular to a capacitor device and its manufacturing process and a capacitor voltage transformer provided with the capacitor device. Background technique [0002] CVT (Capacitance type voltage transformer) is widely used because of its good insulation performance and high stability and reliability. For example, in high-voltage power systems, high-voltage CVTs will be widely used in the system due to the needs of system control, relay protection, and measurement. [0003] The CVT includes two parts: a capacitor device and an electromagnetic device. The main structure of the capacitor device includes a barrel-shaped shell and a cover plate, as well as a capacitor core, insulating oil and expander arranged in the barrel-shaped shell. The expander is generally an elastic closing element. When the volume of the insulating oil in the capacitor device changes due to temperature changes, the ex...

Claims

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Application Information

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IPC IPC(8): H01G13/00
CPCH01G13/003
Inventor 赵含
Owner XIAN XD POWER CAPACITOR CO LTD
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