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28

2021-12

Main Causes of Failure of High Pressure Mud Pump in Petroleum Machinery?

There are three main reasons for the failure of the seal of the high-pressure mud pump of petroleum machinery: 1. When the sealing surface is opened to repair the high-pressure seal of petroleum machinery, 85% of the seal failure is not caused by wear, but has leaked before wear. When the sealing surface of the mud pump fittings is opened, the solid particles in the medium enter the sealing surface under the action of liquid pressure. After the sealing surface is closed, these solid particles are embedded in the surface of the soft ring, which actually becomes a "grinding wheel" and will damage the surface of the hard ring. Since the moving ring or rubber ring is fastened to the shaft, when the shaft moves in tandem, the moving ring cannot fit in time, so that the sealing surface is opened, and the sealing surface is closed with hysteresis.

28

2021-12

Discussion on the Structure of High Pressure Mud Pump of Petroleum Machinery

Petroleum machinery high-pressure mud pump mainly consists of the following parts: (a) power end 1, pump casing and pump cover are made of steel plate welding. The bearing seat of the driving shaft and the crankshaft is an integral cast steel part, which is welded with the pump casing after processing, and annealed after welding to eliminate residual stress. 2. Driving shaft The size of the extended parts at both ends of the mud pump driving shaft is completely symmetrical. Large belt pulley or sprocket can be installed at either end. The supporting bearings at both ends adopt single-row centripetal short column roller bearings. 3. The crankshaft adopts forged straight shaft and eccentric wheel structure, and does not adopt the traditional integral casting crankshaft structure of three-cylinder pump at home and abroad. The castings are forgings and the whole is integrated.

28

2021-12

What is the principle of supercritical water oxidation technology?

Supercritical water oxidation is an emerging skill in organic waste and wastewater treatment. 1, the simple process of supercritical water oxidation is the first, the sewage pump is used to press the sewage into the preheater for preheating, which is directly mixed with the usual circulating reactants to enter the reactor after the heating temperature is improved, and then the compressor is used to pressurize the air or oxygen into the reactor. Harmful organic matter and oxygen in supercritical water agile reaction to the complete oxidation of organic matter, such as organic matter concentration to meet, the heat released by oxidation is enough to heat all the materials in the reactor to supercritical condition, in homogeneous conditions to make organic matter reaction. The material separated from the reactor enters after cooling.

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