Detailed parameters of 4RV-AF foam pump

Bingham pump is a horizontal pipeline oil pump imported from Bigham Willamette company in the United States. It is a single-stage, double suction, horizontal split, double volute centrifugal pump. At present, there are mainly two types of Bingham pumps used in oil pipelines: one is full stage pump, with specifications of 20x20x19hsb, serial number of 4b636 ~ 4b644; the other is half stage pump, specification is 20x20x16bhsb, serial number is 4b633 ~ 4b635. Their performance characteristics are: low head, large displacement, high efficiency, need positive pressure into the pump, safe and stable operation, easy to realize automation and remote operation. Figure 1-95 shows the spectrum of Bingham pump type.

Brief introduction of centrifugal pump for LNG transportation

Liquefied natural gas (LNG) technology is not only used to solve the problems of natural gas storage and transportation, but also widely used in peak shaving devices when natural gas is used. LNG is usually stored in low-temperature storage tank with temperature of 112k and pressure of about 0.1MPa. Transportation of LNG, a low-temperature flammable medium, not only requires the pump to withstand low temperature, but also requires higher air tightness and electrical safety of the pump.

According to different functions, LNG transfer pump is generally divided into tank pump and high-pressure pump. The pump in the tank is a single-stage centrifugal pump with low working pressure, generally about 1.2MPa. It provides flow for cold insulation cycle, tank car transportation and bog (oil off gas) condensation in LNG terminal, and provides suction head for high-pressure pump to ensure normal operation of high-pressure pump. A typical tank pump structure is shown in figure 1-96. The high-pressure pump is a multi-stage centrifugal pump with high working pressure. According to different design requirements, the high-pressure pump is generally between 4-10mpa, providing power for the gasification and export of liquefied natural gas, as shown in Fig. 1-97.

LNG transfer pump has its own advantages and characteristics compared with ordinary pump because its conveying medium is ultra-low temperature liquefied natural gas

(1) The submerged centrifugal pump is used in LNG transfer pump, which is completely isolated from air during operation and has high safety;