The seamless steel cylinder external testing method is a commonly used technique in the inspection of high-pressure containers such as seamless steel cylinders. It mainly evaluates the performance and quality of the cylinder by measuring its deformation (such as volume change or axial/radial deformation) during high-pressure testing.
The seamless steel cylinder external measurement method mainly utilizes the elastic deformation and plastic deformation characteristics of the steel cylinder during high-pressure loading and unloading processes. By measuring its external dimensions (such as radial expansion or axial extension), the structural strength, sealing performance, and potential hazards of the steel cylinder can be determined.
Usually, the steel cylinder external measurement method and water pressure testing machine are used to complete the inspection, and it can also efficiently conduct batch testing. Inject high-pressure water into the outside of the steel cylinder during the pressure test, and detect the external deformation of the cylinder through an external measuring device. Measure the deformation recovery of the steel cylinder again after releasing the internal pressure, and analyze whether the cylinder has permanent deformation or exceeds the elastic limit. Compare the deformation before and after loading and unloading, and determine whether the steel cylinder meets safety requirements based on industry standards. High precision: able to reflect the small deformation characteristics of steel cylinders. Good safety: Avoid the risk of steel cylinder explosion. Multipurpose: Suitable for testing steel cylinders of various specifications.
The seamless steel cylinder external testing machine is a specialized equipment used to test the airtightness and strength of seamless steel cylinders, widely used in the gas cylinder manufacturing and inspection industry. In order to ensure the accuracy and safety of the detection, the device needs to have the following features:
1. Accurate pressure control and monitoring
It is necessary to be able to accurately control the test pressure and achieve a high-pressure state.
Equipped with high-precision pressure sensors and monitoring systems, the test pressure is displayed and recorded in real time to ensure that the pressure curve meets national or industry standards.
2. Efficient external measurement method design
The external measurement method evaluates the performance of a steel cylinder by measuring its small deformation under pressure, so the testing machine needs to be equipped with a high-sensitivity deformation measurement device (such as a displacement sensor).
The measuring device should be stable and have good repeatability to avoid external interference on data acquisition.
3. Safety protection devices
Considering the risks of high-pressure testing, the equipment must have a reliable safety protection system, including pressure relief valves, automatic alarm devices, and safety covers.
When the test pressure exceeds the set value or there is an abnormality, it can automatically release pressure and issue an alarm.
4. Automated operations
It should support automated operation processes, including automatic pressurization, pressure holding, measurement, pressure relief, and data recording.
Equipped with human-machine interface (such as touch screen) and software system, it is easy to operate and manage test data.
5. Durability and reliability
The core components of the equipment, such as hydraulic systems and pressure vessels, need to be made of high-strength, corrosion-resistant materials to ensure long-term stable operation.
The design should fully consider fatigue resistance and be able to withstand high-frequency pressure testing operations.
6. Data collection and analysis function
Equipped with a data acquisition system, it can record pressure time curves and deformation data for analyzing the quality condition of steel cylinders.
Support connection with computers for convenient data export and long-term storage.
7. Adapt to multiple specifications of steel cylinders
Should support seamless steel cylinder testing of multiple specifications (capacity, pressure rating, size), with flexible clamping and positioning devices.
8. Meet the standard requirements
Meet the testing requirements specified in relevant national or international standards (such as GB/T 9251, ISO 11439, etc.).
A testing machine with these characteristics can effectively improve the efficiency and reliability of seamless steel cylinder detection, while ensuring the safety of operators.