Compressor failure caused by check valve

by check valveCompressor failure caused

1. Case background

Fault phenomenon: Recently, our company received a compressor that needed maintenance and debugging. The customer reported that the equipment got stuck directly after starting up for about 1 minute, but the previous shutdown status was normal;

Root cause: Our maintenance engineer tested the equipment and found that the check valve at the exhaust end of the compressor equipment had been removed; while in the shutdown state, high-pressure gas backflow caused the compressor to reverse, causing the failure;

Deep lesson: The customer used an electronically controlled check valve to manually open and close it. Over time, this procedure was forgotten.

2. The core importance of check valves

In fluid transportation systems such as fans, compressors, and pumps, check valves (also known as check valves and one-way valves) are core components to ensure equipment safety. Its core function is to prevent the medium from flowing back. When the fluid pressure changes in the pipeline, the check valve will quickly close to protect the pipeline system; prevent the equipment from reversing; and prevent the release of the container medium.

Note: 3030 check valve

3. Application areas of check valves

· Utilities : water/drainage system, fire protection system.

· Energy industry : oil and natural gas extraction, transmission pipelines, compressor stations.

· Process industry : media isolation and process protection in chemical and pharmaceutical production.

· Food and Hygiene Industry : Prevent cross-contamination and ensure product hygiene.

4. Maintenance and maintenance of check valves

To ensure that check valves work reliably, a regular maintenance schedule must be established:

1. Inspection records: Check the check valve regularly, establish maintenance files, record each inspection and maintenance situation, and ensure its normal operation.

2. Cleaning and maintenance: According to the medium conditions, regularly clean the impurities and dirt on the valve core.

3. Lubrication maintenance: Regularly lubricate parts that need lubrication to reduce wear.

4. Correct selection: Select the appropriate check valve type according to system pressure, medium, flow rate and installation direction.

5. Pay attention to training: ensure that operation and maintenance personnel understand the function of the check valve to avoid similar human failures caused by 'forgetting procedures'.

Summary : Although the check valve is small, it is the 'gatekeeper' for the safety of the fan and compressor system. It solves complex system safety issues through simple mechanical principles. Correct use, regular maintenance and a deep understanding of its value are low-cost and high-efficiency measures to avoid major equipment failures and ensure production continuity.