Reciprocating pump cylinder sleeve compression device

Abstract

The invention relates to the field of engineering equipment, in particular to a reciprocating pump cylinder sleeve compression device which comprises a bolt, a discharging liquid cylinder, a cylinder sleeve flange, a nut, a double-end stud, a cylinder sleeve gland and a gland locking disc. The reciprocating pump cylinder sleeve compression device is characterized in that the double-end stud comprises two external threaded sections; the cylinder sleeve gland comprises two arc-shaped parts and two plane parts; the gland locking disc comprises two arc-shaped parts and two plane parts; a cylinder sleeve is positioned through the cylinder sleeve flange; when the cylinder sleeve gland, the double-end stud and the nut are compressed on the discharging liquid cylinder, the torque of the nut can be controlled for compression of the cylinder sleeve; and after the cylinder sleeve is compressed, the bolt is adopted for being connected with the gland locking disc. The reciprocating pump cylinder sleeve compression device has the advantages that the plane parts of the cylinder sleeve gland are adjacent to those of the gland locking disc, so that the cylinder spacing is reduced; the nut comprises two internal threaded sections and an outer hexagonal part, thereby being beneficial to the connection torque control; and accordingly, the size of a reciprocating pump can be reduced, the working stability can be improved, the weight can be reduced, the service life can be prolonged, and the purpose of reducing the cost and improving the efficiency can be fulfilled.

Description

technical field [0001] The invention relates to the field of engineering equipment, in particular to a cylinder sleeve pressing device for a reciprocating pump. Background technique [0002] In the field of oil and gas, reciprocating pumps are used to transport liquids for oil and gas development, such as transporting drilling fluid to the drill bit, assisting rock breaking, cooling the drill bit, and carrying cuttings out of the well; or transporting fracturing fluid for fracturing activities , or transport liquid for well flushing, etc. Oil and gas development activities would not be possible without reciprocating pumps. [0003] Since the reciprocating pump mostly adopts 3 cylinders or 5 cylinders, the center distance between the cylinder liner flange and the cylinder liner gland determines the center distance of the reciprocating pump discharge cylinder, and determines the length of the reciprocating pump crankshaft. Usually, both the cylinder liner flange and the cyli...

AI Technical Summary

Problems solved by technology

Usually, both the cylinder liner flange and the cylinder liner gland are circular, resulting in a large center distance of the hydraulic cylinder and a long length of the crankshaft, resulting in a reciprocating pump with large volume, heavy weight, high cost, and inconvenient transportation and maintenance

[0004] At the same time, because the cylinder liner gland is a structure with a knocking plate, the torque cannot be precisely controlled when the cylinder liner is tightened, and the wear-resistant plate and cylinder liner seal are prone to failure

[0005] Therefore, the reciprocating pump has a large volume, heavy weight, high cost, inconvenient transportation and maintenance, unstable work and low efficiency

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