Abstract: The present invention discloses a hydraulically-driven double-acting mud pump, comprising power motors, pressure oil pumps, a three-position four-way hydraulically-actuated directional valve, a hydraulic power end and a mud pump head, the power motors being connected to the pressure oil pumps in a conventional way, the pressure oil pumps being communicated with a port P of the three-position four-way hydraulically-actuated directional valve via a pipeline, a port T of the three-position four-way hydraulically-actuated directional valve being communicated with an oil tank via a pipeline, a port A and a port B of the three-position four-way hydraulically-actuated directional valve being both connected to the hydraulic power end, the hydraulic power end being connected to the mud pump head in a conventional way, a lower end of the mud pump head being communicated with a low-pressure manifold and two sides of the mud pump head being communicated with a high-pressure manifold.

Abstract: The present invention discloses a hydraulic double-acting fracturing pump skid, comprising a skid chassis, power motors, oil pumps, a hydraulic power end and fluid ends; the power motors and the oil pumps are arranged at two ends of the skid chassis, the hydraulic power end is arranged in the middle of the skid chassis, and the fluid ends are arranged on two sides of the hydraulic power end; the power motors are connected to the oil pumps via a transmission mechanism, the oil pumps are communicated with the hydraulic power end via a three-position four-way directional valve and can drive the hydraulic power end to operate, the hydraulic power end is connected to the hydraulic power in a transmission way, and a lower end of the fluid ends is communicated with a low-pressure manifold and two sides of the fluid ends are respectively communicated with a high-pressure manifold.

Abstract: The present invention discloses a hydraulically-driven double-acting mud pump, comprising power motors, pressure oil pumps, a three-position four-way hydraulically-actuated directional valve, a hydraulic power end and a mud pump head, the power motors being connected to the pressure oil pumps in a conventional way, the pressure oil pumps being communicated with a port P of the three-position four-way hydraulically-actuated directional valve via a pipeline, a port T of the three-position four-way hydraulically-actuated directional valve being communicated with an oil tank via a pipeline, a port A and a port B of the three-position four-way hydraulically-actuated directional valve being both connected to the hydraulic power end, the hydraulic power end being connected to the mud pump head in a conventional way, a lower end of the mud pump head being communicated with a low-pressure manifold and two sides of the mud pump head being communicated with a high-pressure manifold.

Abstract: The present invention discloses a hydraulic double-acting fracturing pump skid, comprising a skid chassis, power motors, oil pumps, a hydraulic power end and fluid ends; the power motors and the oil pumps are arranged at two ends of the skid chassis, the hydraulic power end is arranged in the middle of the skid chassis, and the fluid ends are arranged on two sides of the hydraulic power end; the power motors are connected to the oil pumps via a transmission mechanism, the oil pumps are communicated with the hydraulic power end via a three-position four-way directional valve and can drive the hydraulic power end to operate, the hydraulic power end is connected to the hydraulic power in a transmission way, and a lower end of the fluid ends is communicated with a low-pressure manifold and two sides of the fluid ends are respectively communicated with a high-pressure manifold.