Exploring the Application, Principle, and Operation Process of Pure Gas Pressure Reducing Valve Helium Mass Spectrometer Leak Detector

I. Reasons for Application

Pure gas pressure reducing valves play a crucial role in many fields, such as semiconductor manufacturing, medical equipment, scientific research experiments, etc. Ensuring their good sealing performance and preventing gas leakage is of vital importance, mainly for the following reasons: Safety Assurance

Leaked gases may have characteristics such as flammability, explosiveness, and toxicity, posing a serious threat to personnel and the environment. For example, in a semiconductor manufacturing plant, if hydrogen leaks, it may cause an explosion when it encounters a fire source. Product Quality

In some high-precision manufacturing processes, the purity and pressure stability of gases have a direct impact on product quality. Leakage will lead to a decrease in gas purity, thus affecting the performance and quality of products. Taking chip manufacturing as an example, a slight gas leakage may lead to chip defects and reduce the yield rate. Cost Control

Pure gases are usually expensive, and leakage means a waste of resources and an increase in costs. Compliance Requirements

Certain industries are subject to strict regulations and standards and must ensure that equipment is leak-free to comply with relevant provisions.

The valve is leak-detected using a helium mass spectrometer leak detector

II. Principle

The helium mass spectrometer leak detector works based on the characteristics of helium gas molecules, which are small in size, have strong penetrating power, and are easy to detect.

When using a helium mass spectrometer leak detector to detect a pure gas pressure reducing valve, first place the pressure reducing valve in a sealed test chamber. Then, spray a small amount of helium gas on the outside of the pressure reducing valve. If there are leakage points in the pressure reducing valve, the helium gas will enter the test chamber through these leakage points.

The mass spectrometer analyzer inside the helium mass spectrometer leak detector can separate and detect the incoming gas molecules, thus determining whether there is a helium gas leakage and calculating the leakage rate according to the intensity of the detected helium gas signal.

III. Usage Process

Preparation Work

Ensure that the helium mass spectrometer leak detector is properly powered on and preheated, and carry out necessary calibrations. Clean the pure gas pressure reducing valve to be detected thoroughly to remove surface dirt and impurities, so as not to affect the detection results. Installation and Connection Install the pressure reducing valve on a specially designed test fixture to ensure a tight connection without leakage.

Connect the test fixture to the test chamber of the helium mass spectrometer leak detector. Helium Spraying Use a spray gun to evenly spray helium gas on the possible leakage parts of the pressure reducing valve (such as connections, seals, etc.).

Detection Start the helium mass spectrometer leak detector for detection and observe the helium gas signal displayed by the instrument. Analyze the Results Judge whether the leakage situation of the pressure reducing valve meets the requirements according to the leakage rate value and leakage position indication displayed by the instrument. Record and Report Record the detection results, including information such as the leakage rate and leakage position, and generate a detection report.

For example, when detecting a pure gas pressure reducing valve used in a medical oxygen supply system, if the detected leakage rate exceeds the specified standard, the pressure reducing valve needs to be repaired or replaced to ensure the safety and stability of the oxygen supply.

The helium mass spectrometer leak detector is a high-precision instrument. It is recommended to select an instrument with corresponding durability and reliability according to the severity of the working environment to ensure that it can operate stably for a long time in complex environments.

The helium mass spectrometer leak detectors produced by Anhui Nuoyi Technology have been widely applied in many industries due to their excellent quality and stable performance, meeting various application needs. If you have any questions, you are welcome to communicate!