Low-temperature LNG unloading pry

By designing a cryogenic LNG unloading skid, adopting a distributed networking structure and an explosion-proof unloading controller, the problems of low efficiency and high safety hazards of manual operation during LNG unloading were solved, and efficient and safe automated unloading management was achieved.

CN223709342UActive Publication Date: 2025-12-23SHANXI SBECK INTELLIGENT TECH CO LTD
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Patent Information

Application Number
CN202520438134.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-13
Publication Date
2025-12-23
Estimated Expiration
2035-03-13

AI Technical Summary

Technical Problem

The existing LNG unloading process suffers from low efficiency and significant safety hazards due to manual operation, as well as a low level of automation, making it difficult to meet the needs of chemical enterprises for safe production and automated management.

Method used

A cryogenic LNG unloading skid was designed, which adopts a distributed networking structure, including a flare venting pipeline, a gas phase balance pipeline, a liquid phase pipeline and a nitrogen pipeline. It is equipped with an explosion-proof unloading controller and an electrostatic protection system to realize centralized monitoring and risk-distributed management of the unloading process.

Benefits of technology

This improved the automation level of LNG unloading, ensured the safety and reliability of the unloading process, and achieved efficient operation management.

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Abstract

The utility model belongs to the technical field of unloading pry, and discloses a low-temperature LNG unloading pry, which has the specific technical scheme that the low-temperature LNG unloading pry comprises a torch emptying pipeline, a gas phase balance pipeline, a liquid phase pipeline and a nitrogen purging pipeline, and the gas phase pipeline is connected with a gas phase arm through a pneumatic stop valve, a pressure transmitter and a stop valve; the gas phase balance pipeline is communicated with a torch emptying pipeline through a second safety valve; the liquid-phase pipeline is connected with a liquid-phase arm through a stop valve, a temperature transmitter, a pressure transmitter, a pneumatic stop valve check valve, a filter and a low-temperature unloading pump; the liquid-phase pipeline is communicated with a torch emptying pipeline through a first safety valve and a third safety valve; the nitrogen purging pipeline is communicated with the rotary joint through a stop valve, a pressure reducing valve and a check valve; the unloading pressurizing pipeline is communicated with a gas phase through an unloading pressurizer and a stop valve; after unloading is started, the unloading control instrument receives analog signals transmitted by the pressure gauge transmitter and the temperature transmitter and controls the unloading pump to be started according to data of the temperature transmitter and the pressure transmitter.
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