The stainless steel pump is mainly considered from the aspects of liquid conveying, device raising, liquid properties, pipe layout, and operating operation conditions. The model of the pump is opened. The following specifically introduces the selection method of opening the pump in the stainless steel.

The properties of the liquid, including the name of the liquid medium, physical properties, chemical properties and other properties, physical properties have temperature C density D, viscosity U, the diameter of solid particles and gas in the medium, which involves the system's raising, effective air erosion waste Types of quantity calculation and suitable pump: Chemical properties mainly refer to the chemical corrosion and toxicity of liquid media. It is an important basis for Changsha to use the pump material and the shaft seal type.

Traffic is one of the important performance data of pump selection. It is directly related to the production capacity and transportation capacity of the entire device. For example, the design institute can calculate the normally, minimum, and maximum traffic in the design of the design institute. When selecting the pump in stainless steel, the maximum flow is based on the normal flow. When there is no maximum traffic, it is usually 1.1 times the normal flow as the maximum traffic.

The system required for the system is another important performance data for selecting pumps. Generally, it is necessary to use a 5%-10%balance after the increase of 5%-10%.

According to the installation, terrain conditions, water level conditions, and operating conditions, the selection of pumps (pipelines, diving, liquid, unlocking, self -suction, gear, etc.) are determined to select the pump, vertical formula and other types.

The pipe layout conditions of the device system refer to some data and pipeline specifications such as the lowest side of the side of the liquid delivery of the liquid height, the lowest liquid surface of the side, and the length of the pipeline, the materials, the specifications of the pipeline, the quantity, etc. In order to combine the computing and the amount of vapor erosion waste.

Moved.

For the liquid pump (or density than 1000kg/m3) with a conveying viscosity greater than 20mm2/s, be sure to convert the performance curve of the viscosity (or under this density) with the water experiment pump characteristic curve. Calculate or compare it carefully.

Determine the number of stainless steel dual -suction centrifugal pumps and spare rates. For pumps that run normally, only one is usually used, because one large pump is equivalent to two small pumps working in parallel (referring to the same range, the same traffic), and the high pump efficiency is high efficiency. From the small pump, a large pump can be selected from the perspective of energy -saving instead of two small pumps. However, when there is the following situations, two pumps can be considered and the joint works can be considered: the traffic is very large, and one pump cannot reach this traffic. For a 50%spare rate large pump, two smaller pumps can be changed, two spares (three in total)