An emergency pull-off valve for automated loading of a loading arm

By employing a spring mechanism and radial convex ring in the emergency disconnect valve, the valve core is ensured to move stably in emergency situations, solving the problem of valve core closing posture deviation, achieving rapid medium cut-off, reducing leakage risk, and improving the emergency response capability of the loading arm system.

CN224550883UActive Publication Date: 2026-07-24LIANYUNGANG SHENYU PETROCHEMICAL MASCH EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
LIANYUNGANG SHENYU PETROCHEMICAL MASCH EQUIP CO LTD
Filing Date
2025-06-30
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing emergency disconnect valves are prone to deviations in the valve core's closing posture during the separation process, leading to sealing failure and potential safety hazards such as media leakage.

Method used

The valve core is made of female and male valve bodies, equipped with a spring mechanism and sealing column. Combined with the mechanical constraint and guiding structure of radial convex ring and limiting shoulder, it ensures the axial stable movement of the valve core during emergency breakage. The spring mechanism drives the valve core to respond quickly and fit with the sealing surface to achieve rapid cut-off of media flow.

Benefits of technology

It effectively avoids seal failure caused by vibration or inertial interference, significantly reduces the risk of leakage, and improves the emergency shut-off reliability and safety of the loading arm system.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224550883U_ABST
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Abstract

The application relates to an automatic emergency pull-off valve for loading a loading arm, and relates to the technical field of emergency valves. In order to solve the problem that the closing posture of a valve core is prone to deviation, a female valve body and a male valve body are arranged, the female valve body and the male valve body are internally provided with valve cores, a sealing column is arranged between the two valve cores, each valve core is provided with a spring mechanism, the spring mechanism comprises a shell and an elastic piece, the shell is fixedly arranged in the corresponding female valve body or male valve body, a containing groove is formed in the shell, the elastic piece is arranged in the containing groove, a valve rod is arranged on one side of the valve core close to the shell, the valve rod is slidably connected in the containing groove, the valve rod is connected with the end of the elastic piece, a radial convex ring for limiting the valve rod from being pulled out is arranged at the opening of the containing groove, and the female valve body and the male valve body are externally provided with a pull-off mechanism. The application realizes the axial stable movement of the valve core during emergency pull-off, and significantly reduces the leakage risk effect.
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