Wear-resistant and corrosion-resistant stainless steel (including duplex steel) semi-submerged vertical multi-stage long-shaft deep well turbine pump album

The semi submersible vertical multi-stage long shaft deep well turbine pump made of wear-resistant and corrosion-resistant stainless steel (including duplex steel) is a special vertical long shaft pump customized for extreme working conditions with strong corrosion and solid particles. Its core advantages are corrosion resistance and wear resistance, which far exceed ordinary carbon steel pump types. It has no mechanical seal and zero leakage. The semi submersible vertical multi-stage long shaft deep well turbine pump is the core conveying equipment for high-risk working conditions such as chemical metallurgy and mining environmental protection.
🔧  Core structural characteristics
Fully corrosion-resistant overcurrent material: The overcurrent components are made of 304/316L stainless steel, duplex steel 2205/2507, and even super duplex steel materials. The key friction surfaces are strengthened by alloy powder welding, and the resistance to chloride ion corrosion and abrasive wear is 3-5 times that of ordinary carbon steel pumps.
Layout of Upside Dry Motor: Non corrosion-resistant components such as motors and bearings are all arranged on the ground, and torque is transmitted through multiple high-precision long shafts. Motor maintenance does not require downhole operations, completely avoiding corrosive gases from corroding electrical components.
No mechanical seal design: traditional exposed mechanical seals are eliminated to fundamentally eliminate the risk of leakage of highly corrosive media. It is suitable for transportation scenarios involving flammable, explosive, and highly corrosive media, greatly improving operational safety.
Double bearing lubrication system: The upper rolling bearings are lubricated with grease, and the lower liquid guide bearings can be made of self-lubricating materials such as Sailong and filled with polytetrafluoroethylene. The cleaning medium can achieve self-lubricating, and for particle containing conditions, it can be cooled and lubricated with water at a pressure of 0.2 MPa or above.
Special impeller structure: Closed/semi open/open impellers can be selected. Open impellers are specially adapted to abrasive media containing a small amount of solid particles and short fibers, which are not easily blocked and have excellent wear resistance.
 📊  Typical performance parameters
Rated flow rate: 5-13636 m ³/h
Total lift: 5~400 m, the customized extra large model can exceed 762m at most
Underwater depth: The standard version supports 3-20m, while the extra long customized version can be extended to over 30m
Medium temperature: Conventional model -20~100 ℃, special jacket design can cover up to 180 ℃
Design standards: comply with ISO2858 and ISO5199 international standards, and implement CJ/T 235-2017 China Urban Construction Industry Standard
Operating efficiency: Under normal operating conditions, it can reach 70%~88%, and the high-efficiency zone covers 70%~120% of the rated flow rate
🏭  Main application scenarios
Chemical and pharmaceutical industries: transporting various highly corrosive liquids such as acids, alkalis, salts, as well as chemical slurries containing small amounts of solid particles, widely used in fine chemical, pharmaceutical, electroplating and other process links.
Metallurgical mining industry: transporting slurry waste, metallurgical waste liquid, and acidic wastewater containing heavy metals. Dual phase steel material can resist the dual erosion of high chloride ions and high abrasive particles, greatly extending equipment life.
Ocean Engineering and Seawater Utilization: Made of 2205/2507 duplex steel material, seawater is directly extracted from the ocean as circulating cooling water or raw water for desalination plants, with a much higher resistance to seawater corrosion than ordinary 316 stainless steel.
Environmental sewage treatment: transporting industrial sewage, sludge, and wastewater containing corrosive components, suitable for high corrosion sewage upgrading scenarios in municipal sewage treatment plants and industrial park wastewater treatment stations.
New energy and special working conditions: Suitable for the transportation of corrosive electrolytes in the photovoltaic and lithium battery industries, as well as the transportation of highly corrosive waste liquids in the hazardous waste treatment industry, fully meeting the zero leakage requirements of high-risk environmental protection working conditions.
✨  Core operational advantages
Corrosion resistance performance: The corrosion resistance equivalent (PREN) of duplex steel material is ≥ 35, which can operate stably for a long time in high chloride ion and strong acid-base environments. Its service life is 2-3 times that of ordinary stainless steel pumps.
Strong wear resistance: The key flow surface is strengthened by alloy powder welding, which can transport abrasive media containing solid particles up to 10%. The impeller wear rate is reduced by more than 60% compared to ordinary stainless steel pumps.
Extremely reliable start-up: The impeller is always completely submerged below the liquid level, achieving self filling water supply throughout the entire process. Water can be discharged immediately upon start-up, completely eliminating the risk of start-up failure caused by suction and cavitation in ordinary centrifugal pumps.
Zero leakage safe operation: with no exposed mechanical seal design, it eliminates the safety hazards of strong corrosive media spraying from the root, fully meeting the safety requirements of high-risk scenarios such as chemical and hazardous waste.
Convenient and safe maintenance: The motor is located on the ground, and daily inspections and maintenance do not require going underground, greatly reducing downtime for maintenance.
Strong adaptability to working conditions: The material, shaft length, and impeller structure can be flexibly customized according to the corrosion level and abrasive content of the medium, covering the full range of transportation needs from clean water and sewage to highly corrosive and abrasive media.
Key operating taboos: Dry operation of semi submersible vertical multi-stage long shaft deep well turbine pumps is strictly prohibited. A low water level automatic pump stop protection device must be installed to avoid bearing dry wear and burnout caused by low water level; When transporting highly corrosive media, it is necessary to regularly inspect the corrosion and wear of the overcurrent components of the semi submersible vertical multi-stage long shaft deep well turbine pump to avoid component corrosion perforation and medium leakage.