Rubber Expansion Joints play a crucial role in pipeline systems. However, end - face leakage occasionally occurs. The main reasons are as follows:
Improper Installation
Bolts Not Tightened Properly or Uneven Force Application: During installation, if the bolts are not tightened or are tightened with inconsistent forces, the sealing surface of the
Rubber Joint cannot fit perfectly, creating leakage paths.
Unclean Sealing Surface: The presence of impurities, oil stains, etc., on the sealing surface can hinder the close contact of the sealing surfaces, leading to leakage.
Mismatched Connection Sizes: If the sizes of the
Rubber Expansion Joint and the pipeline or
Flange do not match, forced connection can cause deformation or damage to the sealing surface, resulting in leakage.
Product Quality Issues
Substandard Raw Materials: If the rubber material does not meet the requirements, with poor medium - resistance performance, it is prone to aging and deformation, affecting the sealing effect.
Manufacturing Process Defects: Defects in the production process, such as uneven thickness of the spherical body, flaws on the sealing surface, etc., can reduce the sealing performance of the product.
Influence of the Operating Environment
Medium Corrosion: Long - term exposure to corrosive media such as strong acids and alkalis can corrode the rubber material, causing it to lose elasticity and reducing its sealing performance.
Excessively High or Low Temperature: Operating outside the temperature tolerance range of the
Rubber Soft Joint can lead to material aging, hardening, or brittleness, affecting the sealing effect.
Excessive Pressure: If the pipeline pressure exceeds the bearing capacity of the
Rubber Flexible Joint, it can cause deformation of the joint and damage to the sealing surface, triggering leakage.
Other Factors
Vibration and Impact: Frequent vibrations in the pipeline system can loosen the connection parts of the
Rubber Flexible Expansion Joint, reducing its sealing performance and eventually causing leakage.
Aging: Rubber materials have a certain service life. After long - term use, aging occurs, with reduced elasticity and sealing performance, leading to leakage.In summary, the causes of end - face leakage in
Rubber Joints involve multiple aspects such as installation, product quality, and the operating environment. To prevent leakage, it is necessary to install the joints strictly in accordance with specifications, select qualified rubber joints, and use and maintain them reasonably according to actual working conditions.
