The company's flagship product - water ring vacuum pump

 

The company specializes in the development and production of water ring vacuum pumps. As a well-known enterprise in the industry, the company has also put in a lot of effort in product improvement and new product development. In order to establish a foothold in the constantly changing market, it is important to have product quality and corporate philosophy. If the product is done well, the enterprise is not afraid of competition, and good products will have a market. This is an unchanging truth. Price competition is only a temporary market phenomenon, and good products in the hearts of users can be recognized.

The company has always believed in the production of water ring vacuum pumps, which has been an important product of the company. Among many vacuum enterprises, the goal of refining and strengthening products has always been pursued. This goal is not for competitors in the same industry, but to truly achieve results. The market development space for water ring pumps is very large, and the company realized this early on. Therefore, it is required to achieve the best technical indicators, operational performance, and other aspects of the product. Producing qualified products is the embodiment of the company's brand.

The company not only does a good job in internal management and production, but also promotes the market of water ring vacuum pumps more effectively. The demand for products is increasing, and the company's production tasks are also being accelerated. Product orders are increasing day by day, which is the benefit that product quality brings to the enterprise.

Principle of positive pressure leakage testing for lithium batteries

 

Charge and pressure the cavity where the battery is placed, and visually inspect the surface of the battery for bulges to determine if the battery is leaking. According to relevant information, when using the positive pressure method for leak detection, it is necessary to fill the sealed chamber inside the tested product with helium gas at a pressure higher than one atmosphere. When there is a leak on the surface of the tested product, helium gas will enter the surrounding atmosphere through the leak hole and then use a suction gun to detect the increase in helium concentration in the surrounding atmosphere of the tested product, thereby achieving leak measurement of the tested product.

How to improve the detection accuracy of helium mass spectrometer leak detector? Analysis of influencing factors

The detection accuracy of helium mass spectrometer leak detector is crucial, as it directly affects the accuracy and efficiency of detection. However, there are many factors that can affect the detection accuracy of helium mass spectrometer leak detectors, and the following are some of the main factors:

Firstly, due to the influence of testing pressure, different workpieces have varying sensitivities to testing pressure. Generally speaking, for parts with high porosity, the impact of test pressure on leakage rate is greater, while for parts with low porosity, the impact is relatively small. In addition, with the increase of testing pressure, it will also bring many other problems, such as temperature changes and long required stabilization time. Therefore, we suggest conducting leak detection within a certain pressure range for specific workpieces, and then selecting a lower pressure that meets the testing requirements as the final testing pressure. At the same time, the selection of leak testing pressure for the leak testing machine must fully consider the bearing capacity of each mechanism of the tested part for the maximum test pressure.

Secondly, due to the influence of the detection volume, if the detection volume increases, the corresponding pressure reduction rate will be slower, which requires longer time to complete the measurement. In some specific cases, if the measurement volume cannot be reduced, the required accuracy and sensitivity may not be achieved.

Thirdly, the impact of stabilization time on detection is also an important factor. During the inflation process, compressed air entering a sealed container will cause a series of thermodynamic and kinetic changes. When a certain volume of compressed air is rapidly moved to a closed container, its pressure will decrease. When measuring at this time, this pressure change will be considered as a pressure change caused by leakage, which will affect the accuracy of the measurement results. This' inflation effect 'is influenced by inflation pressure, test volume, and test piece material. When the inflation pressure or test volume increases, the pressure decrease caused by inflation becomes apparent. One solution to this problem is to add a stabilization period between inflation and measurement to eliminate this effect.

Finally, temperature also has a significant impact on detection. For gases in sealed containers, as the temperature increases, the internal pressure also increases. Therefore, temperature changes are an important factor affecting pressure changes. It is generally estimated that every 1 ℃ change in temperature will cause a pressure change of 0.36% of the measured pressure value. Therefore, as the testing pressure increases, the influence of temperature will become more pronounced.

In the process of using a helium mass spectrometer leak detector, if we can pay attention to the four influencing factors and related details mentioned above, our detection work will be more efficient and the detection results will be more accurate. The helium mass spectrometer leak detector is an advanced multi-purpose and highly reliable leak detector in the industry, suitable for airtightness testing in various fields.