Three-Cylinder Crankshaft Plunger Pump

I. Product Introduction

The high-pressure plunger reciprocating pump is a volumetric transfer pump with an applicable working pressure range of 10MPa-100MPa, suitable for high-pressure fluid transfer applications. The equipment relies on periodic deformation of the working chamber volume to complete media transfer, converting prime mover mechanical energy into fluid media pressure energy for liquid pressurized transfer. The pump transfer displacement is determined only by the working chamber volume variable and the frequency of volume changes per unit time. The theoretical transfer flow is not affected by the outlet discharge pressure, providing stable pressure transfer performance. It is commonly paired with accumulators to optimize media transfer conditions.

II. Working Transfer Principle

The high-pressure plunger reciprocating pump relies on piston reciprocating motion within the cylinder, or on flexible components such as diaphragms and bellows that undergo periodic elastic deformation in the working chamber. This periodically changes the internal volume of the working chamber, achieving alternating media suction and discharge operations. The entire machine relies on sealing components to isolate the working chamber from the external environment, combined with two sets of pump valves (intake valve and discharge valve) to control the connection and closure between the chamber and external pipelines, completing orderly fluid pressurized transfer operations.

During pump operation, the piston travel speed continuously changes dynamically. A single-chamber pump alternates between media suction and discharge, with instantaneous flow fluctuating dynamically over time, resulting in poor media transfer continuity. Adding multiple working chambers can reduce flow fluctuation amplitude, optimizing media transfer conditions for normal fluid transfer operations.

III. Core Structure Components

1. Pump Working Chamber: Media pressurization chamber, completing fluid suction and discharge through volume changes.

2. Reciprocating Actuator: Piston, plunger, or flexible diaphragm components that change chamber volume.

3. Sealing Components: Isolate the chamber interior from the outside, preventing high-pressure media leakage and external impurity ingress.

4. Control Pump Valves: Divided into intake valve and discharge valve, controlling media inlet and outlet flow respectively.

5. Power Transmission Components: Connect to the prime mover, transmit mechanical energy, and drive plunger reciprocating motion.

IV. Product Features

1. Wide Pressure Range: Suitable for 10MPa-100MPa full-range high-pressure fluid transfer, adaptable to high-pressure pipeline conditions.

2. Volumetric Transfer Principle: Fixed and controllable displacement, flow determined only by chamber volume and reciprocating frequency, unaffected by outlet pressure.

3. Stable Energy Conversion: Mechanical energy directly converted to media pressure energy, high pressurization efficiency, suitable for high-viscosity and high-pressure media transfer.

4. Controllable Flow: Single-chamber flow pulsation is large; multi-chamber structure effectively reduces flow pulsation for smoother transfer.

5. Strong Sealing Isolation: Dedicated chamber sealing structure, suitable for high-pressure oil and water fluid media transfer.

6. Strong Linkage Adaptability: Can be paired with accumulators to balance pipeline flow fluctuations, optimizing pump transfer stability.

V. Operating Characteristics

1. Single-Acting Chamber Plunger Pump: Alternating media suction and discharge, obvious instantaneous flow fluctuation, weak transfer continuity.

2. Multi-Chamber Plunger Pump: Chambers alternately complete suction and discharge, reducing flow pulsation differential for smoother transfer conditions.

3. Accumulator Integration: Balances pipeline pressure fluctuations from plunger variable-speed motion, reduces flow pulsation, and stabilizes pipeline oil and water pressure.

VI. Application Fields

Widely used in high-pressure hydraulic oil supply, industrial high-pressure washing, chemical high-pressure fluid transfer, mining high-pressure water injection, oil and gas process media transfer, and energy storage hydraulic oil supply systems. Suitable for high-pressure, quantitative, high-head fluid transfer operations, and can be paired with various accumulators to form pressure-stabilized transfer systems.

VII. Usage Precautions

1. Strictly control operating pressure within the 10MPa-100MPa range; ultra-high pressure operation is prohibited to avoid chamber and sealing component damage.

2. Regularly inspect intake valve and discharge valve closure sealing; valve jamming directly affects media suction and discharge efficiency.

3. Routinely inspect plunger, diaphragm, and chamber seal wear; seals aging under high-pressure conditions must be replaced promptly.

4. For pulsating flow conditions, pair with appropriately sized accumulators to balance pipeline pressure and reduce pipeline shock and vibration.

5. Regulate prime mover speed compliantly to stabilize plunger reciprocating frequency and ensure rated pump transfer displacement.

6. Filter media to remove impurities in advance; hard particles will wear plunger and pump valve contact surfaces, shortening overall service life.