Leak Detection of Automotive Hose, Application of GripSeal Quick Seal Joint

In the vehicle or parts, various pipelines can be seen everywhere. They are responsible for conducting coolant, oil and other media, and are an integral part of the normal operation of the vehicle. Leak detection is required before such components leave the factory, but hose workpieces will encounter a unique trouble in leak detection.

Low-pressure hoses are easy to deform, and ordinary joints are difficult to clamp

The low pressure hose will have obvious radial deformation during the clamping test. Once the internal pressure is filled and the pipe wall expands outward, the ordinary internal expansion quick sealing joint is prone to lose the grip force, resulting in the failure of the seal and the test cannot be continued. This is a real engineering problem determined by the material characteristics.

In response to this scenario, GripSeal design idea is to add a hard limit shell to the outside of the hose on the basis of the inner ring seal. The function of this shell is to limit the radial expansion of the hose under the test pressure, and at the same time provide an axial limit, so that the joint can be firmly grasped under low pressure, forming a reliable seal.

Manual operation:G25AWith limit housing

G25AIt is a manual-operated quick-sealing joint with a hard limit shell on the outside, which can be used for leak detection of low-pressure hoses. It is suitable for3 barWithin the low pressure waterway or oil hose.G25Asealing jointThe internal expansion structure is adopted, and the pressing amount of the sealing ring is automatically adjusted by the internal spring. During operation, only the sealing ring needs to be inserted into the nozzle and the handle can be pulled to complete the connection. The main body is made of aviation aluminum, which is light in weight and suitable for long-term hand-held operation.

Automated operation:G15With limit housing

For production lines with large batches and fast beats, the efficiency of manual operation is limited. At this time, you can choose G15Pneumatic quick seal jointIt is also equipped with a hard limit housing for easy integration into automation equipment.G15Driven by air pressure, the tail intake pushes the piston to squeeze the sealing ring, so that the sealing ring expands inward and fits the pipe wall tightly. This driving method has stable pressure and good adaptability to rough surfaces or slight threads of the pipe wall. The tail is equipped with a fixing hole, which can be installed on the actuator such as the robot to realize automatic operation; the straight-through test hole reduces the intermediate connector, which is conducive to ensuring the smoothness of the test medium.

From plan to positioning

The difficulty of leak detection of low-pressure hose lies in deformation, and the matching method of inner seal and limit shell is the engineering countermeasure for this physical characteristic. manual selection G25Asealing joint， Automatic selectionG15sealing jointThe two sets of solutions accumulated by GripSeal in the field of automotive pipeline testing have been validated in the actual production line.

GripSeal has long focused on the development and manufacture of quick-sealing joints. From manual to automated, from standard parts to customization, the core is always around one goal: to make the test connection process more reliable and efficient. In seemingly small but crucial processes such as automotive hose leak detection, providing a seal solution that can withstand scrutiny is what we continue to do.