Split logic traffic blocking control method and device

Abstract

Disclosed is a split-type logic flow blocking control device. The split-type logic flow blocking control device mainly comprises an oil inlet valve block and an oil outlet valve block. The oil inlet valve block is integrated by a single-pipeline anti-explosion valve and a double-pipeline anti-explosion valve. An oil inlet is communicated with an oil inlet in the single-pipeline anti-explosion valve. The oil outlet valve block is the double-pipeline anti-explosion valve. An oil outlet is connected with an executive component through flanges, pipelines and the like. A split-type logic flow blocking control method comprises the steps that under the normal condition, all anti-explosion valve ports are completely opened; when pipelines burst, the flow of liquid flowing through the anti-explosion valves is greatly increased, pressure of the ends, where the pipelines burst, of the anti-explosion valves is quickly lost, differential pressure is formed between the two ends of a valve core of each anti-explosion valve, due to the fact that the differential pressure between the two ends of each valve core is enlarged, the pressure of the end B of each anti-explosion valve is much larger than that of the end F of each anti-explosion valve and larger than spring force, and the valve cores move in the direction where the valve ports are closed; the anti-explosion valve ports are completely closed so as to complete the blocking control over logic flow. According to the split-type logic flow blocking control method and device, probability of system risks can be reduced, working efficiency is improved, and flexibility is large.

Description

technical field [0001] The invention relates to a method and device for split logic traffic blocking control. Background technique [0002] In hydraulic systems, hydraulic hoses and hard pipes are often used to connect hydraulic components. Factors such as humidity and corrosion in the working environment, temperature changes, and oil shocks may cause the pipeline to rupture or fail, causing oil A large number of leaks will cause the system to not work properly, thereby greatly increasing the possibility of danger. [0003] Many applications in the prior art are single-line explosion-proof valves, such as: [0004] China Patent Announcement No. 200520079021.3, dated November 1, 2006, titled "Pipeline Explosion-Proof Safety Valve", the application discloses a valve to prevent system pipelines and components on them from suddenly bursting and failing to cause a large amount of fluid leakage. vented safety valve. However, if this explosion-proof safety valve wants to work ag...

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Problems solved by technology

However, if this explosion-proof safety valve wants to work again, it must be repaired before the pipeline can resume work and cannot prevent a large amount of leakage from the components at the lower end of the pipeline. The disadvantage is that the valve processing technology is complicated and the production cost is high.

However, this double explosion-proof valve can only be used in the pressure-holding system, and cannot prevent the leakage of the oil inlet line, but can only prevent the leakage of the actuator end

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