Sulfur hexafluoride density relay and density table C-shaped pipe and making technology thereof

Abstract

The present invention relates to a sulfur hexafluoride density relay and a density table C-shaped pipe. The pipe comprises a C-shaped pipe body, a pedestal and an end base, the pedestal and the end base are respectively connected with two ends of the C-shaped pipe body, and tin layers area arranged at the outer surfaces of the C-shaped pipe body, the pedestal and the end base. The making technology comprises the following steps: (1) performing pickling of the surfaces of the C-shaped pipe body, the pedestal and the end base, and removing the oxide and the impurity of the surface of the brass; (2) disposing the C-shaped pipe body, the pedestal and the end base into the dissolved tin liquor, and plating the tin layers on the surfaces of the C-shaped pipe body, the pedestal and the end base; and (3) connecting the pedestal and the end base with the two ends of the C-shaped pipe body through soldering. When the C-shaped pipe body is soldered with the pedestal and the end base, because there is a layer of tinning at the surface of the C-shaped pipe body, the pseudo soldering condition can not generate at soldering, and the efficiency and the reliability of the soldering are greatly improved.

Description

technical field [0001] The invention relates to a sulfur hexafluoride density relay, in particular to a C-shaped tube of a sulfur hexafluoride density relay and a density meter and a manufacturing process. Background technique [0002] The sulfur hexafluoride density relays and density meters currently on the market are mainly used to detect the density of sulfur hexafluoride inside the electrical equipment of sulfur hexafluoride. Sulfur-sulfur electrical equipment failure, so the density performance of the product itself as a key indicator. [0003] It uses C-shaped tubes as pressure-sensitive components inside. The deformation of the C-shaped tube drives the movement to rotate, and then the pointer installed on the movement indicates the corresponding reading and drives the switch to achieve the function of display and relay. . At present, many C-shaped tubes are made of brass, and the base and end seat connected to the C-shaped tube are also made of brass, so the weldin...

AI Technical Summary

Problems solved by technology

At present, many C-shaped tubes are made of brass, and the base and end seat connected to the C-shaped tube are also made of brass, so the welding between them is generally soldered, because the surface of the brass is easy to oxidize, there will be a layer Oxide film, so that there will be false welding during soldering, and it is easy to leak

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