Water and air double-cooled hydraulic cylinder

Abstract

The invention discloses a water and air double-cooled hydraulic cylinder which comprises a water cooled jacket, a cylinder body, a piston rod, a cylinder sealing cover, an air cooled end cover and a cylinder shaft end sealing cover, wherein the water cooled jacket is a hollow cylinder, and a water inlet and a water outlet for injecting and discharging cooling water are arranged on the water cooled jacket; the cylinder body is arranged in the water cooled jacket; the piston rod makes reciprocating movement in the cylinder body; the cylinder sealing cover is used for sealing one end of the cylinder body, hydraulic fluid is injected into the cylinder body and discharged from the cylinder body through a fluid inlet and a fluid outlet on the cylinder sealing cover; the air cooled end cover is arranged at the end part of the water cooled jacket opposite to the cylinder sealing cover so as to seal the end part of the water cooled jacket, and an air inlet is arranged on the air cooled end cover; and the cylinder shaft end sealing cover is inserted into the air cooled end cover to seal the other end of the cylinder body, and an air outlet hole is arranged in the cylinder shaft end sealing cover. A cooling air diversion channel is formed between the air cooled end cover and the cylinder shaft end sealing cover, fluids in the air inlet and the cooling air diversion channel are communicated, and fluids in the air outlet hole and the cooling air splitting channel are communicated.

Description

technical field [0001] The invention relates to a water-air double-cooling hydraulic cylinder, in particular to a water-air double-cooling hydraulic cylinder used for a sliding tapping hole of a converter. Background technique [0002] The hydraulic cylinder of the sliding taphole of the converter has very strict requirements on its process, requiring the internal structure of the hydraulic cylinder to be stable, sensitive to action, fast in response, long in service life and not allowed to leak. However, the sliding taphole hydraulic cylinder in the prior art has unreasonable seal structure design and too simple water cooling structure design. The seal of the hydraulic cylinder is easily damaged under high temperature environment, and the service life is too short, which often causes unplanned maintenance of the converter. Specifically, the main defects in the water cooling structure and sealing form of the domestic converter sliding taphole hydraulic cylinder are: (1) the ...

AI Technical Summary

Problems solved by technology

However, the sliding taphole hydraulic cylinder in the prior art has unreasonable sealing structure design and too simple water-cooling structure design. The seal of the hydraulic cylinder is easily damaged under high temperature environment, and the service life is too short, which often results in unplanned maintenance of the converter.

Specifically, the main defects in the water cooling structure and sealing form of the domestic converter sliding taphole hydraulic cylinder are: (1) the piston and piston rod seals are seriously damaged in high temperature environments, and internal and external oil leakage accidents often occur; (2) the oil cylinder seal Unreasonable type selection or defective sealing structure often cause seal damage accidents; (3) The cylinder cooling jacket has a simple structure and poor cooling effect; (4) There is no protection and cooling measures for the piston shaft end, and seal damage in high temperature environments may easily cause oil leakage ACCIDENT

Because the average service life of the hydraulic cylinder is only about 1000 furnaces, the cost is high and cost control is difficult

Obviously, the current hydraulic cylinder cannot meet the production needs, resulting in frequent accidents of unplanned shutdowns and serious impact on production

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