The hose airtightness testing machine is a precision equipment mainly used to test the airtightness and pressure resistance of various hoses, ensuring that they will not leak or other problems in actual use. This type of equipment is widely used for hose inspection in the automotive industry, hydraulic systems, and other fields.
The core principle of the hose airtightness testing machine is to apply a certain pressure to the inside of the hose and monitor the maintenance of the pressure. Determine whether there is a leak in the hose based on changes in pressure. The testing machine injects gas into the hose through an air pump to reach the set testing pressure. After applying the predetermined pressure, the testing machine will maintain this pressure for a period of time to observe whether the hose leaks under this pressure. By using high-precision sensors to monitor the pressure inside the hose in real-time, if the pressure significantly decreases over time, it indicates that there is a leak in the hose. Based on the leakage rate and pressure maintenance, the testing machine will generate corresponding test reports to determine whether the airtightness of the hose meets the standards.
According to different application scenarios and testing requirements, the hose airtightness testing machine can perform various types of tests. Static pressure testing is the most common method of air tightness testing, which applies a constant pressure to the hose and maintains it for a certain period of time to observe whether the hose can maintain that pressure. Suitable for testing the airtightness and sealing performance of hoses under normal working pressure. Blasting test is to gradually increase the pressure inside the hose until it ruptures or shows obvious failure, and test its pressure resistance limit. This type of test is suitable for evaluating the maximum load-bearing capacity of hoses and is used for product design and quality verification. Fatigue testing simulates the pressure changes experienced by hoses during long-term operation. By repeatedly loading and unloading pressure, the airtightness and durability of the hose are tested, suitable for testing hoses that require long-term use.
The hose airtightness testing machine usually consists of the following main components:
Pressure source: Provides stable gas or liquid pressure, common pressure sources include compressed air, pneumatic pumps, etc.
Control system: used to set parameters such as testing pressure and testing time, and monitor the entire testing process. The testing machine is usually controlled by PLC or computer and equipped with a touch screen display interface.
Pressure sensor: used for real-time monitoring of pressure changes inside the hose, with high accuracy to ensure the accuracy of test results.
Sealing fixture: specifically used to secure both ends of the hose and ensure sealing, preventing gas or liquid leakage from the hose interface during testing.
Leak detection device: equipped with specialized leak detection devices such as bubble detectors or infrared leak detectors, used to more accurately locate the leak point.
Data recording system: used to record and store test data, and generate test reports.
The hose airtightness testing machine has high precision and stability. Through precise sensors and control systems, it can achieve high-precision pressure control and leakage detection, ensuring the accuracy of test results. Airtightness testing machines are usually computer-controlled and can automatically execute testing programs, reducing human operational errors and improving work efficiency. Can test hoses of different materials and specifications, suitable for various industrial and consumer goods fields. Testing machines are usually equipped with multiple safety protection measures, such as pressure overload protection, leakage alarms, etc., to ensure the safety of operators and equipment. When selecting a hose airtightness testing machine, it is necessary to choose based on specific testing requirements and hose specifications, mainly considering the following factors.
Pressure range: Ensure that the pressure range of the testing machine can meet the testing requirements of the required hose.
Testing medium: Select the appropriate testing medium based on actual working conditions.
Accuracy requirement: Select high-precision pressure sensors and control systems to ensure the reliability of test results.
Number of testing stations: Choose single station or multi station testing machines according to production needs, with the latter suitable for batch testing.
Automation level: If the testing task is heavy, choosing equipment with high automation level can significantly improve efficiency.