Hydraulic system suitable for emergency fire disasters and used for tank root valve

Abstract

The invention discloses a hydraulic system suitable for emergency fire disasters and used for a tank root valve. The hydraulic system suitable for emergency fire disasters and used for the tank root valve comprises a hydraulic cylinder, a fusible plug, an oil-gas energy accumulator and a first hydraulic control valve, wherein the fusible plug communicates with an inflation cavity of the oil-gas energy accumulator; an oil charging cavity of the oil-gas energy accumulator communicates with a control cavity of the first hydraulic control valve; the first hydraulic control valve is in a normally-closed state; and two oil ports of the first hydraulic control valve are connected with one oil port of an oil tank and one oil port of the hydraulic cylinder separately. According to the invention, byarranging the fusible plug, the oil-gas energy accumulator and the hydraulic control valve, the problem of hydraulic oil discharge after the fusible plug is melted is solved, the situation that hydraulic oil discharge pollutes an environment or continues combustion supporting and increases fire behavior is avoided, the valve is rapidly and automatically closed after a fire occurs, the system is protected, the losses are reduced, and the safety is greatly improved; and the integrity of the whole hydraulic system is still kept after the fire occurs, the functions are not lost, and the basic opening and closing functions of the valve are not affected.

Description

technical field [0001] The invention relates to a hydraulic system, in particular to a tank root valve hydraulic system suitable for emergency fires. Background technique [0002] The root valve of the oil depot storage tank is the key equipment for oil storage and output of the oil tank. In case of emergency such as fire, it needs to be shut off quickly to avoid the expansion of the accident. In actual use, the fusible alloy plug device is directly connected with the hydraulic system. Installed and connected together, since the fusible alloy plug device is together with the hydraulic system, and the fusible alloy plug device itself is disposable, after the high temperature of the fire caused the fusible alloy plug device to work, three situations occurred: [0003] (1) The hydraulic oil is released through the fusible alloy plug device, leaks out to pollute the environment, or continues to support combustion and increase the fire; [0004] (2) The fusible alloy plug device...

AI Technical Summary

Problems solved by technology

[0004] (2) The fusible alloy plug device damaged by high temperature causes the hydraulic oil in the system to be released and the hydraulic circuit is damaged. The original hydraulic system is no longer complete, and a new fusible alloy plug device must be replaced to compensate for the hydraulic oil released due to leakage. , after which the hydraulic system of the actuator can return to normal;

[0005] (3) This directly leads to the fact that in an emergency, the actuator used for emergency shutdown cannot quickly and quickly restore the normal opening or closing work

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