Precautions for installation of Pressure balance elements

Pressure balance elements can usually be tested from the following aspects: 

1. Appearance inspection First, perform an appearance inspection to check whether there are signs of damage such as wear, cracks, deformation or corrosion on the surface of the element. Pay special attention to the joints, sealing parts and key moving parts, such as pistons, bellows or diaphragms, to see if there are any signs of leakage or abnormal deformation, which may affect the performance and pressure balance function of the component.

Pressure test is a key link in detecting pressure balance components. By installing the component in a specific test device and applying different pressure conditions to it, the pressure changes in the actual working environment are simulated. Use a high-precision pressure sensor to measure the pressure on both sides of the component and record the data. Check whether the component can accurately balance the pressure under different pressures to ensure that its pressure balance accuracy is within the specified range. For example, within the set pressure range, the component is required to control the pressure difference on both sides within ±0.1MPa.

3. Response time test

During the pressure test, the response time test can also be performed at the same time. Change the input pressure suddenly and observe the time required for the pressure balance component to respond and bring the pressure to a balanced state. For some application scenarios with high response speed requirements, such as aerospace or high-speed fluid control systems, fast response time is essential. Generally speaking, the response time of high-performance pressure balance components may be between a few milliseconds and tens of milliseconds.

4. Leak detection

Use professional leak detection equipment, such as helium mass spectrometer leak detector or bubble leak detection method, to detect leaks on pressure balance components. Place the component in a sealed environment, fill it with gas or liquid at a certain pressure, and then detect whether there is a leak. Small leaks may gradually affect the pressure balance performance of the component, so it is necessary to ensure that the component is well sealed and the leakage rate is lower than the specified standard value, such as the leakage per hour does not exceed 0.05mL.

5. Functional test