Pneumatic compacting self locking type oil tank gas recycling and sealing device arranged on top of train

Abstract

The invention discloses a pneumatic compacting self locking type oil tank gas recycling and sealing device arranged on the top of a train. The pneumatic compacting self locking type oil tank gas recycling sealing device is characterized in that a rubber gasket is placed above a tank port, a bottom withholding mechanism is positioned in the tank port, and a vertical pipe lifting air cylinder is arranged in the bottom withholding mechanism; the vertical pipe lifting air cylinder can drive a vertical pipe to connect with the withholding mechanism, and spring bolts and a bottom support arranged in the withholding mechanism are connected with a guiding sliding groove in an outer cylinder through a sliding mechanism; when the vertical pipe drives the withholding mechanism to upward move, the spring bolts can horizontally unfold and can upward compact a tank wall, and the stable reliable pressing force is provided for the rubber gasket arranged on the upper part of the sealing device. The sealing device disclosed by the invention has the advantages that the compacting force is only acted between a sealing cover and the tank port, the influence from the rigidity of a crane pipe and a tank car is small, the provided compacting force greatly exceeds the pressured generated by oil gas, and the sealing effect is very reliable; the sealing device finishes compacting and loosening through a pneumatic assembly; the sealing device is suitable for sealing tank ports of multiple train tanks, the operation is simple, and the sealing device is used for sealing and recycling the top truck loading of a volatile oil product or chemical medium train tank of an oil refinery, a storage field or a chemical engineering unit.

Description

technical field [0001] The invention relates to a loading and unloading device for volatile oil products or chemical media, in particular to a gas recovery and sealing device for a pneumatically compressed self-locking oil tank on the top of a train. Background technique [0002] At present, as the country's requirements for safe production, energy conservation and environmental protection are getting higher and higher, many petrochemical and chemical companies have used oil and gas recovery sealing devices when loading volatile oil products or chemical media to reduce volatility. The gas pollutes the environment and harms people's lives and property. At the same time, the recycling of volatile gases also saves resources. At present, the commonly used sealing devices mainly include: the cone cap or flat cap that relies on the outer arm of the crane tube to lock to provide the sealing pressure, or the sealing device that relies on the self-weight of the sealing device or the...

AI Technical Summary

Problems solved by technology

At present, the commonly used sealing devices mainly include: the cone cap or flat cap that relies on the outer arm of the crane tube to lock to provide the sealing pressure, or the sealing device that relies on the self-weight of the sealing device or the spring force or the attraction force of the magnet to provide the sealing device, or relies on The outer arm of the crane tube is rigidly supported, and the sealing device of the tank mouth is pressed by the cylinder. Due to the poor rigidity of the inner and outer arms of the crane tube with the rotary joint, the locking of the outer arm is not reliable, and the sealing device cannot provide sufficient pressing force for the seal. The sealing effect is poor, and the pressing force provided by the self-weight or spring force or magnetic material to compress the sealing device cannot meet the sealing requirements, and the greater the self-weight, the more difficult the operation

The sealing device of the cylinder on the vertical pipe is not rigid enough due to the long outer arm of the crane pipe, and the body subsides when the oil is loaded, and the compression force provided cannot completely seal the tank mouth

Therefore, the poor sealing performance of the above-mentioned sealing device is the main technical bottleneck that leads to the low recovery efficiency of the oil and gas recovery system.

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