Liquid phase damper for measuring pressure of low-temperature liquid heat insulation tank car

By setting up heat transfer components on the pressure measuring pipeline of the low-temperature liquid insulated tanker and using heat transfer balance automatic compensator, the problem of unstable pressure measurement is solved, the measurement stability and thermal insulation effect are improved, and safety risks are reduced.

CN119687371AActive Publication Date: 2025-03-25CHENGXI SHIPYARD XINRONG
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Patent Information

Application Number
CN202411675841.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-22
Publication Date
2025-03-25
Estimated Expiration
2044-11-22

AI Technical Summary

Technical Problem

The pressure measurement stability and reliability of low-temperature liquid adiabatic tank trucks are low, mainly because the liquid phase and gas phase mixed phase inside the pressure measuring pipeline extend to the outside of the tank, resulting in unstable pressure measurement.

Method used

A liquid phase damper for pressure measurement is designed. By installing a heat transfer element on the pressure measurement pipeline in the insulated space and connecting it with the inner wall of the outer container, it absorbs external heat to accelerate the gasification of the mixed phase and prevents the liquid from extending. At the same time, a U-shaped elastic metal clip and a heat transfer balance automatic compensator are used to dynamically balance heat transfer to ensure that the liquid phase inside the pressure measuring pipeline is fully gasified.

Benefits of technology

It improves the pressure measurement stability and reliability of low-temperature liquid insulated tank trucks, reduces liquid extension, enhances thermal insulation effect, and reduces the safety risk of rapid increase in pressure inside the tank.

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Abstract

The invention relates to the technical field of low-temperature liquid storage and transportation, in particular to a liquid phase damper for measuring pressure of a low-temperature liquid heat insulation tank car. Comprising a pressure measuring pipeline which is communicated with an inner container of the low-temperature liquid heat insulation tank car, penetrates through a heat insulation space between the inner container and an outer container of the low-temperature liquid heat insulation tank car and is led out of the outer container, and a heat transfer element is connected to the outer circle of the section, located in the heat insulation space, of the pressure measuring pipeline. And the heat transfer element is connected with the inner wall of the outer container. The stability and the reliability of pressure measurement of the low-temperature liquid heat insulation tank car are improved.
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