Cryogenic Insulation Module Testing With Independent Pressure Control
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Solution Overview
Problem
There is a lack of techniques for testing the tightness and gas fluidity of cryogenic thermal insulation modules under cryogenic and ambient conditions, with a need for multiple pressure gradients, independent pressure control, and testing at low temperatures, as well as accommodating various sizes and interface locations.
Innovation Solution
A device comprising a gas/liquid inlet and discharge module, with pressure control modules, valves, and sensors, allowing for precise pressure control and testing under different conditions, including cryogenic and ambient temperatures, and accommodating different module sizes and interface locations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a testing device is designed for cryogenic thermal insulation modules, then testing capability under cryogenic conditions is improved, but device complexity increases
Solution Approach 1:
The testing device is divided into separate functional modules: a gas/liquid inlet module with independent pressure control modules for inner and outer spaces, a discharge module with independent valves, and multiple sensor modules. Each module can be independently controlled and tested, allowing complex cryogenic testing to be broken down into manageable segments that can be operated and maintained separately.
Solution Approach 2:
The testing device is designed with universal components that can handle multiple functions: the pressure control modules can regulate pressure in both inner and outer spaces, the valves can control both gas and liquid flow, and the sensors can measure various parameters (pressure, temperature, oxygen content, dew-point). This multi-functionality reduces the need for separate specialized equipment for each testing requirement.
2Measurement precision
If multiple pressure control modules are used for independent pressure control, then testing precision is improved, but device complexity increases
Solution Approach 1:
The pressure control system is segmented into independent pressure control modules, each dedicated to controlling pressure in specific spaces (inner space or outer space). Each module contains its own pressure controller, valves, and sensors, allowing precise independent control of pressure gradients without requiring a single complex centralized control system.
Solution Approach 2:
Pressure control modules act as intermediary devices between the gas/liquid inlet and the thermal insulation module spaces. These modules regulate and buffer the pressure before introducing gas or liquid into the inner or outer spaces, providing precise pressure control while isolating the complexity of pressure regulation from the main testing system.
3Adaptability or versatility
If the device accommodates various sizes and interface locations, then adaptability is improved, but device complexity increases
Solution Approach 1:
The testing device incorporates universal interface designs and adjustable components that can accommodate thermal insulation modules of various sizes and interface locations. The gas/liquid inlet module and discharge module are designed with flexible connection capabilities, allowing the same device to be adapted to different module configurations without requiring complete redesign.
Solution Approach 2:
The device incorporates adjustable and reconfigurable components that can be dynamically adapted to different testing requirements. Valves, connectors, and sensor positions can be adjusted or reconfigured to match various interface locations and module sizes, providing adaptability while maintaining a relatively simple base device structure.
Data Source
AI summary
A device for testing gas tightness of a cryogenic thermal insulation module and gas fluidity therein includes a gas/liquid inlet module, a gas/liquid discharge module and a thermal insulation module. The gas/liquid inlet module includes an inner-space liquid nitrogen inlet valve, an outer-space liquid nitrogen inlet valve, a low-pressure pressure control module, an inner-space high-pressure pressure control module, an outer-space high-pressure pressure control module, a buffer tank, a pressure relief valve and a filter, which are connected by a pipe. The gas/liquid discharge module includes a liquid/gaseous nitrogen discharge valve, an inner-space vent valve and an outer-space vent valve, which are connected by a pipe. An outlet of the gas/liquid inlet module is connected to an inlet of the thermal insulation module, and inlet of the gas/liquid discharge module is connected to an outlet of the thermal insulation module. The present invention can be used to inspect and investigate the tightness of a thermal insulation module under cryogenic and ambient conditions and to test and investigate gas fluidity therein.