How to effectively detect and prevent internal leakage of Air Pressure Brake Hose?

In the field of modern transportation, especially in heavy vehicles and commercial vehicles, air brake systems play a vital role. Among them, the performance of the air pressure brake hose (Air Pressure Brake Hose) as a key component connecting the brake valve, air tank and brake air chamber directly affects the safety and braking efficiency of the vehicle. Internal leakage is one of the common faults of air pressure brake hoses, which may cause slow braking response, insufficient braking force or even complete failure, seriously threatening road traffic safety. Therefore, it is crucial to master how to effectively detect and prevent internal leakage of air pressure brake hoses.
1. Methods for detecting internal leakage
Visual inspection: First, perform a basic visual inspection to observe whether there are signs of cracks, wear, aging or foreign body puncture on the surface of the hose, which are external factors that may cause internal leakage.
Pressure test: Use professional pressure testing equipment to pressurize the brake system and observe the changes in the pressure gauge reading. If the pressure drops rapidly and cannot remain stable, there is a high probability of internal leakage. At this time, focus on checking whether there is leakage sound or bubbles coming out of the hose connection and the hose itself.
Soap water detection: Apply soapy water to the suspected leak area and observe whether bubbles are generated. This is a simple and effective detection method suitable for preliminary positioning of the leak point.
Ultrasonic leak detection: For small leaks that are difficult to detect, ultrasonic leak detection instruments can be used. The equipment can capture the ultrasonic signal generated by the leak and convert it into audible sound or visual image to help accurately locate the source of the leak.
Infrared thermal imaging: After the vehicle has been running for a period of time, use an infrared thermal imager to scan the brake system, especially the hose part. Internal leakage will cause abnormal local temperature increase. These hot spots can be visually found through thermal imaging, thereby locating the leak location.
2. Measures to prevent internal leakage
Regular maintenance and inspection: Establish a regular brake system inspection and maintenance system, including visual inspection of air brake hoses, connection tightness verification, and necessary replacement. It is recommended to follow the manufacturer's recommendations or the guidance in the vehicle manual.
Choose high-quality hoses: When replacing hoses, products that meet industry standards and are reliable in quality should be selected. High-quality hoses have better pressure resistance, wear resistance, and corrosion resistance, which can effectively extend service life and reduce the risk of leakage.
Correct installation and operation: Ensure that the hose is not twisted, stretched or over-bent during installation, and avoid contact with sharp objects to reduce the risk of physical damage. The driver should avoid improper behaviors such as sudden braking and long-term continuous braking during operation to reduce the impact on the braking system.
Environmental adaptability considerations: Select appropriate hose materials according to the vehicle operating environment. For example, vehicles operating in extreme temperatures or corrosive environments should use hoses with corresponding weather resistance and corrosion resistance.
Training and awareness enhancement: Strengthen training for drivers and maintenance personnel to improve their awareness of the importance of the braking system and their ability to identify and report potential faults.