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Energy saving and emission reduction, quality and efficiency improvement—Hebei Jingye Steel Energy Saving Renovation Project
As an active advocate and supporter of the "double carbon" goal, Liancheng Group has been committed to continuously providing customers with comprehensive services, efficient and innovative energy-saving product solutions, reducing energy consumption and operating costs,...Read more -
Matters needing attention of single-stage pump
1、Pre-start preparation 1). Corresponding to the grease lubrication pump, there is no need to add grease before starting; 2). Before starting, fully open the inlet valve of the pump, open the exhaust valve, and the pump and water inlet pipeline should be filled with liquid, then close the exhaus...Read more -
Matters needing attention of middle-opening pump
1. Conditions necessary for start-up Check the following items before starting the machine: 1）Leak check 2）Make sure that there is no leakage in the pump and its pipeline before starting. If there is leakage, especially in the suction pipe, it will reduce the operati...Read more -
Matters needing attention of boiler feed water pump
1. Pump can only run within the specified parameters; 2. Pump conveying medium must not contain air or gas, otherwise it will cause cavitation grinding and even damage parts; 3. Pump can not convey granular medium, otherwise it will reduce the efficiency of pump and the ...Read more -
Matters needing attention of Submersible sewage pump
1. Before use： 1).Check whether there is oil in the oil chamber. 2). Check whether the plug and sealing gasket on the oil chamber are complete. Check whether the plug has tightened the sealing gasket. 3).Check whether the impeller rotates flexibly. 4). Check whether the...Read more -
Introduction to common pump terms (6) – Pump cavitation theory
Cavitation of Pump: Theory and Calculation Overview of cavitation phenomenon The pressure of liquid vaporization is the vaporization pressure of liquid (saturated vapor pressure). The vaporization pressure of liquid is related to temperature. The higher the temperature...Read more -
Introduction to common pump terms (5) – Pump impeller cutting law
Fourth section Variable-diameter operation of vane pump Variable-diameter operation means cutting off part of the original impeller of vane pump on lathe along the outer diameter. After the impeller is cut, the performance of the pump will change according to certain rul...Read more -
Introduction to common pump terms (4) – Pump similarity
law Application of similarity theory of pump 1. When the similar law is applied to the same vane pump running at different speeds, it can be obtained: •Q1/Q2=n1/n2 •H1/H2=(n1/n2)2 •P1/P2=(n1/n2)3 •NPSH1/NPSH2=(n1/n2)2 Example： Existing a pump, the model is SLW50-200B, we need change SLW50-...Read more -
Introduction to common pump terms (3) – specific speed
Specific Speed 1. Specific speed definition The specific speed of water pump is abbreviated as specific speed, which is usually represented by the symbol ns. The specific speed and the rotational speed are two completely different concepts. The specific speed is a comprehensive data calculated ...Read more
