Preventive Measures for Corrosion of Vacuum Pumps in Shandong

Preventive measures against corrosion of vacuum pumps in Shandong:

1. Surface Treatment: Thoroughly remove the high-temperature oxidation layer and clean the surface thoroughly using toluene.

2. Blend raw materials: Strictly adhere to the specified proportions when blending the Sore carbon nanocomposite material and mix thoroughly until there is no color variation.

3. Apply the raw material: First, apply a layer of raw material, ensuring thorough adhesion and complete coverage. Then, evenly spread the raw material onto the surface of the repaired and maintained components to achieve the specified paint film thickness. The paint film thickness for repair and protection must comply with the assembly clearance specifications for the centrifugal impeller and the rotating disc.

4. Curing: 24 hours / 24°C (ambient temperature of raw materials). Curing at an elevated temperature can enhance the overall properties of the material; however, the ambient temperature must not exceed the material’s maximum allowable operating temperature.

5. Assembly and Precautions for Shandong Vacuum Pumps: Assemble according to the installation standards. During repair and maintenance, avoid subjecting the materials to impacts or collisions that could exert force on them. If the materials are damaged during installation, you can use polishing to address the issue.

Which aspects will seriously affect the application of vacuum pumps in Shandong?

I. The Impact of Steam Generation

Slightly lower steam pressure and fluctuations in working pressure both significantly affect the performance of Shandong vacuum pumps. Therefore, the steam pressure must not fall below the specified working pressure. However, since the overall design of commonly used Shandong vacuum pumps has already been finalized, further increasing the steam pressure beyond a certain point will no longer enhance either the pumping capacity or the ultimate vacuum level. Moreover, to ensure stable steam pressure supplied by the heating furnace, it is advisable to dedicate a single heating furnace exclusively to providing working steam for the steam jet pump. This approach will prevent fluctuations in steam pressure and help maintain consistent quality of the Shandong vacuum pump. In the vacuum technologies commonly employed, saturated water vapor serves as the working medium, and the state of the steam has a critical impact on the pump’s performance. Wet steam not only impairs the operation of centrifugal pumps but also corrodes the steam nozzles. Additionally, increased steam consumption by the centrifugal pump can lead to increasingly unstable operating conditions.

II. The Impact of Condensate Formation

Condensate plays an extremely important role in liquid-ring vacuum pumps. Condensate effectively cools and condenses the steam. For the equipment to remove water vapor from the system at a given working pressure, the partial pressure of the water vapor must exceed its corresponding saturated vapor pressure at that temperature. Therefore, the condensate temperature must be lower than the saturation temperature corresponding to the working pressure in order to ensure stable operation of the pump casing.

3. The impact of the pump casing’s rational layout

The nozzle is a critical component that determines the performance characteristics of Shandong vacuum pumps. Existing shortcomings include incorrect nozzle installation, misalignment, blockage, damage, corrosion, and leakage. Regardless of the preventive measures adopted, nozzle blockage is unavoidable. On the one hand, during the assembly of compressed-air pipelines, residual iron filings and weld spatter left inside the pipes can clog the nozzles. On the other hand, when the vacuum pump system is not in use, the compressed-air pipelines tend to rust; these rust particles can flake off during operation and block the nozzles.

IV. The Role of the Environment

The environmental impact primarily refers to the pollution of the system caused by the gases being pumped. During the steel liquid treatment process, the molten steel releases numerous gases, and at the same time, a portion of fine particles—such as those from the oxidation of sweet potato starch peel—can be drawn into the water-ring vacuum pump. These particles tend to deposit and adhere to the pump casing, reducing the flow conductance of the pumping pipeline, thereby prolonging the pumping duration and diminishing the overall pumping efficiency of the unit.