Honesty and integrity come first! We have been deeply engaged in the cryogenic industry chain for over 20 years, systematically addressing customer needs. We strive to be a backbone force in China's cryogenic equipment sector, enabling Chinese equipment to keep pace with the world!
With the two brands of "Huayuan Chengde" and "CNCD", the company's business covers gas separation, liquefaction and purification equipment, ship equipment, cryogenic liquid storage and transportation equipment, non-standard pressure vessels, engineering installation, and gas services.
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During the use of cryogenic liquid storage tanks, some issues may arise, such as abnormal tank pressure, malfunction of liquid level gauges, and leakage of cryogenic liquids. Understanding the causes and handling methods of these issues is crucial for ensuring the safe operation of the storage tanks.
1. Is the pressure in the storage tank rising abnormally?
● Cause of the problem
Heat input: If the insulation performance of the storage tank decreases, external heat will enter the tank, causing the evaporation of low-temperature liquid and thus increasing the pressure inside the tank. For example, damage, aging, or improper construction of the insulation layer may make it easier for heat to enter the storage tank.
Overfilling: When filling with cryogenic liquids, if the design capacity of the storage tank is exceeded, the space for liquid evaporation becomes smaller, which can also lead to an increase in pressure.
Valve malfunction: Malfunctions in valves such as the inlet valve or exhaust valve, such as valves not closing tightly or failing to open normally, may cause abnormal pressure within the storage tank.
● Handling method
Check insulation condition: Once an abnormal pressure increase is detected, the first step is to inspect the insulation layer of the storage tank for signs of damage or aging. If any issues are found, the insulation material should be promptly repaired or replaced to reduce heat transfer.
Control the filling volume: Strictly adhere to the design capacity of the storage tank when filling to avoid overfilling. During the filling process, closely monitor the changes in liquid level and pressure.
Inspect valves: Inspect all valves of the storage tank to ensure they are functioning properly. If any valve malfunctions, it should be repaired or replaced promptly.
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Understanding the causes and handling methods of pressure anomalies in cryogenic liquid storage tanks, the diagnosis and maintenance of liquid level gauge malfunctions, as well as emergency response measures for cryogenic liquid leaks, is of great significance for ensuring the safe operation of storage tanks and the safety of personnel's lives and property. In practical operations, operators should strictly adhere to operating procedures, strengthen equipment maintenance and management, and enhance their own emergency response capabilities to ensure the safe and stable operation of cryogenic liquid storage tanks.
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