Tank connection device for railway cryogenic container

Abstract

The invention belongs to the technical field of liquefied natural gas transportation, and particularly relates to a connecting device for a railway low-temperature container tank body. The connecting device comprises a pull rod, a first pull rod fixed base and a second pull rod fixed base, wherein one end of the pull rod penetrates through an inner tank body seal head and extends into an inner tank body, and the other end of the pull rod penetrates through an outer tank body seal head and extends out of an external space; a part, which stretches into the inner tank body, of the pull rod is connected with the first pull rod fixed base, and a part, which stretches out of the outer tank body, of the pull rod is connected with the second pull rod fixed base; the first pull rod fixed base is fixedly arranged on the inner wall of the inner tank body; and the second pull rod fixed base is fixedly arranged on the outer wall of the outer tank body. The connecting device disclosed by the invention can be used for increasing the safety coefficient of a tank car transportation process, and also be used for greatly enhancing the transportation reliability and the connection strength.

Description

technical field [0001] The invention belongs to the technical field of liquefied natural gas transportation, and in particular relates to a connection device for a railway cryogenic container tank body. Background technique [0002] Due to the particularity of railway transportation, railway cryogenic tank cars will be affected by various force transmissions; among them, the transmission of axial force in the structure of railway cryogenic vessels is the core issue of safety and reliability of railway cryogenic vessel structures (specifically: The low-temperature container has a two-layer structure of the inner tank and the outer tank. During the railway transportation, under the influence of the axial force, the inner tank and the outer tank may move relative to each other, causing unsafe accidents). [0003] Due to the special working conditions of railway transportation, the axial force transmitted by it is much larger than that of road cryogenic vessels, and the structur...

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Problems solved by technology

[0002] Due to the particularity of railway transportation, railway cryogenic tank cars will be affected by various force transmissions; among them, the transmission of axial force in the structure of railway cryogenic vessel tanks is the core issue of safety and reliability of railway cryogenic vessel tank structures (specifically: The low-temperature container has a two-layer structure of the inner tank and the outer tank. During the railway transportation, under the influence of the axial force, the inner tank and the outer tank may move relative to each other, causing unsafe accidents)

[0003] Due to the special working conditions of railway transportation, the axial force transmitted by it is much larger than that of road cryogenic vessels, and the structure of the axial force transmission structure of the support device of road transport cryogenic vessels is far from meeting the requirements of the structure of railway cryogenic vessels. Therefore, it is necessary to design A device that adapts to the working conditions of railway transportation and satisfies the axial force transmission of the tank structure of railway cryogenic containers

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