95results about How to "Less supporting equipment" patented technology

The invention relates to a fracturing fluid and sand mixing semitrailer, and belongs to the field of fracturing devices for oil field work. The fracturing fluid and sand mixing semitrailer comprises a semitrailer body, a hydraulic system and an electrical control system. The hydraulic system comprises a hydraulic oil tank, at least one hydraulic pump and a hydraulic multi-way valve. An engine, the hydraulic system, the electrical control system, a lifting control chamber, a spiral conveyor, a clean water suction centrifugal pump, a fracturing fluid suction centrifugal pump, a stirring machine, a discharge centrifugal pump, a liquid adding pump, a dry powder adding device and a concentrated guanidine gum adding pump are integrated on the semitrailer body. The work steps of conducting glue solution mixing after fracturing liquid mixing is conducted and discharging the glue solution to a downward fracturing device can be conducted by operating the electrical control system to drive the hydraulic pump through an operator, and therefore work steps of oil field work are highly integrated, matched devices are reduced, workloads of working staff are reduced, and construction quality is ensured.

The invention discloses a rapid separation and integral hoisting method for the pile head of a cast-in-place concrete pile. Before a steel reinforcement cage is lowered down, a sleeve is firstly installed at the top end of the steel reinforcement cage on a main reinforcement with a pile head section which is required to be chiseled off; the two ends of the sleeve are plugged to prevent cement from entering the sleeve; after the strength of concrete in a pile body reaches the design requirement and the pile head is excavated, a slip is cut at the bottom end of the pile head section to be chiseled off along the annular direction of the pile head, and an annular groove is chiseled upwards to expose the sleeve; at least three bores are drilled on the annular side wall of the lower part of thepile head section to be chiseled off, reinforcement short sections are inserted into the drilled bores, and the exposed parts of the reinforcement short sections are used for tying a steel wire rope for hoisting; and hoisting can be conducted after the steel wire rope is well tied, so that the pile head section required to be chiseled off which is separated from the main reinforcement of the pilehead is integrally hoisted. Since the concrete of the pile head section to be chiseled off and the main reinforcement are not bonded with each other, when the pile head is chiseled off, the operationfor stripping the main reinforcement of the pile head off from the concrete is not required, the pile head chiseling speed is greatly accelerated, and the construction cost is reduced.