What is the basis for the selection of heat transfer oil pumps? Hebei Shenghui Pump Co., Ltd. will explain to you.
The heat transfer oil pump should be considered from five aspects according to the process flow and the oil supply and discharge requirements, including liquid delivery volume, device head, liquid properties, piping layout, and operating conditions.
1. The nature of the liquid delivered by the heat transfer oil pump. Including the name of the liquid medium, physical properties, chemical properties and other properties. The physical properties include temperature c, density d, viscosity u, whether there is solid particle diameter and gas content in the medium, etc. This relates to the head of the system and the effective cavitation allowance. Calculation and type of heat transfer oil pump: chemical properties, mainly refer to the chemical corrosiveness and toxicity of the liquid medium, which is an important basis for the selection of heat transfer oil pump materials and which shaft seal to choose.
2. Operating conditions of heat transfer oil pump. Such as liquid operating temperature T, saturated steam power P, suction side pressure PS (absolute), discharge side container pressure PZ, altitude, ambient temperature, whether the operation is intermittent or continuous, and whether the position of the heat transfer oil pump is fixed or movable .
3. The head required by the installation system. It is another important performance data for pump selection. The heat transfer oil pump is a centrifugal pump, which can be determined according to the actual situation of the user. No need to enlarge the head.
4. The piping layout conditions of the device system refer to the liquid delivery height, the liquid delivery distance and the liquid delivery direction, the lowest liquid level on the suction side, the highest liquid level on the discharge side, and some data and piping specifications and their length, materials, pipe fitting specifications, and quantity Etc., in order to carry out the combing head calculation and cavitation allowance check.
5. Flow rate is one of the important performance data for selecting heat transfer oil pump, and it is directly related to the production capacity and delivery capacity of the entire device. For example, the three flow rates of the pump can be calculated in the process design of the design institute. When selecting the pump, take the large flow rate as the basis and take into account the normal flow rate. When there is no large flow rate, usually 1.1 times the normal flow rate can be taken as the large flow rate.
