Product Introduction: Cylinder Flange 1. Product Overview Cylinder flange is a high-pressure integrated connecting component for triplex mud pump fluid end, also known as fluid end cylinder flange. It is installed at the outer end of each cylinder cavity, used to fasten cylinder liner, seal the cylinder chamber, and provide mounting interface for stuffing box, extension rod assembly and discharge branch pipeline. It bears continuous alternating impact pressure of high-abrasive drilling fluid and is one of the core pressure-bearing parts of mud pump fluid end. 2. Material & Manufacturing Process Adopt integral forging of high-strength alloy steel, followed by quenching and tempering heat treatment to enhance compressive resistance, impact resistance and fatigue resistance. - The mating sealing surface is precision milled to high flatness, matched with flat sealing rings to realize zero leakage under rated working pressure; - Circumferentially evenly distributed bolt holes ensure uniform locking force to avoid local stress deformation; - Inner hole with multi-stage positioning shoulders to limit axial and radial displacement of cylinder liner; - Reserved built-in sealing ring grooves for static sealing between flange and pump body; - Surface shot blasting + anti-rust anti-corrosion coating, adapting to long-term muddy, humid outdoor construction environment. 3. Core Structural Features 1. Multi-stage positioning structure Inner shoulder locks the cylinder liner, outer boss fits the fluid end pump body, ensures the coaxiality of liner, extension rod and piston, effectively reduces eccentric wear of vulnerable parts. 2. Thickened pressure-bearing wall with arc transition Eliminate stress concentration at the corner, resist long-term periodic slurry impact, no crack or deformation under full load operation. 3. Integrated multi-function interface Integrate cylinder liner fixing, stuffing box mounting and branch flow channel connection, simplify fluid end pipeline layout and reduce the number of split fittings. 4. Standard general specification Unified bolt hole size, inner bore and thread parameters, interchangeable with mainstream mud pump cylinder liner, stuffing box and sealing accessories, convenient for on-site spare parts replacement. 4. Main Functions 1. Lock cylinder liner reliably Fix the cylinder liner inside the fluid end cavity to prevent liner jumping and loosening caused by reciprocating hydraulic shock. 2. Form closed pressure chamber Cooperate with sealing rings to seal the cylinder chamber, block high-pressure mud leakage from the cylinder end gap. 3. Install and support stuffing box Provide stable mounting base for stuffing box, guide the linear movement of piston rod and extension rod, reduce friction loss of packing. 4. Divert high-pressure mud flow Connect with discharge elbow and manifold to export pressurized drilling fluid from cylinder cavity to the circulation pipeline. 5. Application Scenarios Widely supporting oil drilling, horizontal directional crossing, geological exploration triplex mud pumps. Installed at the outer end of each fluid end cylinder, assembled with cylinder liner, sealing ring, stuffing box and piston assembly to form a complete pumping pressure chamber. 6. Product Value It stabilizes the operation of the cylinder assembly, reduces the wear rate of liners, pistons and packing, eliminates hidden dangers such as mud leakage and pressure drop. It is an indispensable pressure-bearing structural fitting of mud pump fluid end, ensuring stable output of mud circulation pressure and long-term safe operation of the whole pump set.