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Diagnosing and Fixing Pressure Loss Issues in Accumulators

When diagnosing and resolving pressure loss issues in accumulators, the following is a clear step-by-step guide, combined with relevant information in reference articles:
Diagnostic steps
Preliminary inspection
External inspection: Firstly, inspect the exterior of the accumulator to ensure that there is no obvious damage, leakage, or deformation.
Interface and connection: Check whether the pipes, valves, and joints connected to the accumulator are tight and there is no leakage.
Using testing equipment
Pressure gauge: Use a pressure gauge to check the actual pressure of the accumulator and observe if it continues to decrease.
Leak detection agent: If a leak is suspected, a leak detection agent can be used to locate the leak point.
Check internal components
Internal leakage: If no issues are found during external inspection, consider inspecting the internal components of the accumulator, such as the piston, seals, and diaphragm. Damage or wear to these components may cause internal leakage.
Nitrogen diaphragm: For nitrogen driven accumulators, if the detection pin is easily pressed down, it may indicate a loss of nitrogen and damage to the diaphragm.
Repair measures
Internal leakage: For internal leakage, damaged internal components such as pistons, seals, or diaphragms need to be replaced.
Replace damaged parts
O-ring seal: If the O-ring seal is aged or damaged, it should be replaced with a new seal and ensure that it is installed correctly.
Intake valve: If the intake valve is damaged, causing slow or ineffective inflation, the intake valve nut should be replaced.
Recharge
After repairing leaks or replacing components, use appropriate tools and equipment to recharge the accumulator to its normal operating pressure range.
Testing and Verification
After recharging, perform necessary tests, such as observing pressure changes for a long time or simulating system operating conditions, to ensure that the accumulator can maintain pressure normally.
Report this information to management or relevant personnel for subsequent analysis and improvement.
By following the above steps, the problem of pressure loss in the accumulator can be effectively diagnosed and solved, ensuring the normal operation of the system and extending the service life of the equipment.

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