Metal material constant load testing device suitable for hydrogen environment

By designing a constant load testing device for metallic materials suitable for hydrogen environments, the problems of load fluctuation and sealing in existing devices under high-pressure hydrogen environments have been solved. This enables precise application of constant load and high-precision measurement of sample deformation, provides safe and reliable real-time monitoring and control of multiple parameters, is applicable to various sample specifications, and improves the accuracy and safety of testing.

CN224247485UActive Publication Date: 2026-05-15ANKE ENG TECH RES INST (BEIJING) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ANKE ENG TECH RES INST (BEIJING) CO LTD
Filing Date
2025-07-08
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

Existing constant load testing devices for metallic materials struggle to balance the precise application of high-pressure gas environment and constant load when simulating hydrogen environment. They suffer from large load fluctuations, flawed sealing structure design, inability to achieve high-precision measurement of sample deformation, lack of real-time environmental monitoring and safety protection, and insufficient synchronization and reliability of test data.

Method used

A testing device was designed, comprising a cylindrical high-pressure gas storage chamber, loading rods, sensors, and a sealing structure. The device is rigidly connected to a mechanical testing machine via upper and lower loading rods. A load sensor monitors the constant load in real time. Combined with the high-pressure gas storage chamber, inlet/outlet gas pipelines, and temperature and pressure sensors, a multi-factor coupled environment is simulated to achieve real-time high-precision measurement of the axial deformation of the sample. The sealing performance is enhanced by the design of sealing gaskets and plugs. A data acquisition and analysis system and a gas phase hydrogen filling controller are provided for real-time data monitoring and control.

Benefits of technology

It enables precise application of constant load in a high-pressure hydrogen environment, avoids load fluctuations, ensures high accuracy of sample deformation measurement, provides a safe and reliable testing environment, is suitable for various sample specifications, records data synchronously, facilitates traceability, and improves the safety and accuracy of testing.

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    Figure CN224247485U_ABST
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Abstract

The utility model discloses a metal material constant load testing device suitable for a hydrogen environment, which comprises a high-pressure gas storage bin, the high-pressure gas storage bin is hermetically connected with an upper bin cover and a lower bin cover, the upper bin cover is provided with a gas inlet pipeline, the lower bin cover is provided with a gas outlet pipeline, the high-pressure gas storage bin is filled with hydrogen, the upper bin cover is provided with an upper loading rod, and the lower bin cover is provided with a lower loading rod. The upper end of an upper loading rod is connected with a loading head, the lower end of the loading rod extends into the high-pressure gas storage bin, a load sensor is installed on the upper loading rod, a lower loading rod is arranged on the lower bin cover, the upper end of the lower loading rod extends into the high-pressure gas storage bin, the lower end of the lower loading rod is connected with a base, the lower end of the upper loading rod is provided with an upper connector, and the upper connector is connected with a lower connector. A lower connector is arranged at the upper end of the lower loading rod, a constant-load sample is connected between the upper connector and the lower connector, an extensometer is mounted on the constant-load sample, and a temperature sensor and a pressure sensor are mounted in the high-pressure gas storage bin. According to the utility model, a high-pressure hydrogen test environment can be effectively provided, and the performance test of a metal material under a constant load is realized.
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