What are the aspects of the mud pump damage to the piston

For piston rubber seals, frictional heat is a major factor affecting the use of pistons. Rubber is a polymer composite material, if the piston is in a high-pressure, high-speed, heavy-duty working environment, then this violent friction will make the piston rubber temperature rise, resulting in rubber aging and brittle cracks, the surface of the permanent deformation.

Drilling pump in operation, the piston bowl by the cylinder liner, steel core and pressure plate constraints, due to the heat of the rubber and steel plate, the expansion coefficient is different, the bowl can only be in the pressure plate and the space between the cylinder liner and the gap between the steel core and the cylinder liner to expand, resulting in the pressure plate into the bowl, squeezing out the gap.

Sand content: Generally in the process of drilling, the drilling fluid conveyed by the drilling pump has a high viscosity, and at the same time, the sand content is also high, and these sands are high temperature and corrosive.

Especially in the case of solid control equipment does not operate reasonably, the sand content of the drilling fluid often exceeds the design requirements, there is no shortage of sand particles with a diameter of less than 0.1 millimeters, into the piston bowl and the cylinder liner contact surface. Caused different degrees of wear and tear of the piston and cylinder liner, but also exacerbated the destruction of the cylinder liner piston.

Defective cylinder liner cylinder liner: when there is a defective groove, the high-pressure drilling fluid will cut the soft cylinder liner gasket. Slowly the cylinder liner gasket will be punctured, thus puncturing the pump block.

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