Auxiliary tool for disassembling drilling pump and operation steps

Abstract

The invention relates to the field of use of drilling pumps in the petroleum drilling industry and replacement of quick-wear parts, in particular to an auxiliary tool for disassembling a drilling pump and operation steps. The auxiliary tool comprises a first tool body, a second tool body, a connector, a lead screw nut and a support frame, wherein the connector and the lead screw nut are installed at the front end and the middle end of the second tool body separately, and the lead screw nut is connected with the support frame in a sliding manner. The auxiliary tool has the advantages that a locking nut can be disassembled and taken out by simply rotating the first tool body for a few turns, and a piston rod and a piston are pulled out through the second tool body, so that the complex process of moving the old piston out of a cylinder sleeve is fundamentally eliminated, the labor intensity of workers is reduced to the maximum extent, and unsafe factors are eliminated; and through switching of independent movement and linkage between the connector and the second tool body, the operation of disassembling the locking nut and pushing and pulling the piston is easily achieved.

Description

technical field [0001] The invention relates to the field of using a drilling pump in the petroleum drilling industry and replacing vulnerable parts, in particular to an auxiliary tool for disassembling a drilling pump and operation steps. Background technique [0002] Drilling pump refers to the three-cylinder single-acting mud pump commonly used in the drilling industry at home and abroad. The single-acting mud pump only completes one suction and drainage action in one cycle of piston reciprocating motion. It is an important part of drilling equipment and is called drilling. The heart of the equipment. It is also the weakest part. The time-effect analysis and statistics of domestic and foreign drilling prove that about one third of the drilling stoppages are caused by the failure of the drilling pump, and the failure of the drilling pump is concentrated in the fatigue of the piston and cylinder liner. The scraping and abrasion of mud and gravel cause seal failure. [0003...

AI Technical Summary

Problems solved by technology

[0003] During the use of the mud pump, if it is found that the pump pressure drops and the mud leaks, accompanied by the cooling water becoming turbid and the abnormal sound of the leak in the cylinder, it means that the piston has failed and the piston and the cylinder liner need to be replaced. When replacing the cylinder liner The piston needs to be taken out in advance. At present, the existing way to replace the drilling pump piston is to open the front end of the pump under the premise of completely cutting off the power source, spray cover and its fixing parts by using tools such as hammer, crowbar, pipe wrench, and wrench. Take out the cylinder head valve body and accessories, open the tie rod clamp and use multi-person disc pump. This method not only requires the cooperation of multiple people to complete the work, but also takes a long time and is labor-intensive. It is also easy to cause personal injury. Injury accident; use a crowbar hammer to cooperate with prying the piston rod to drive the piston to move to the outlet of the cylinder liner, pull out the old piston rod assembly, remove the old piston from the piston rod and install a new piston, and apply butter grease on the rubber part to push Until the metal part enters the cylinder liner, beat the piston to the joint between the piston rod and the center tie rod, install the clamp to restore the spray cover and other accessories, and use hammers, crowbars and other hitting tools during this process. The early damage or damage of accessories and other parts shortens the service life; the outstanding problem of the old method is that the piston rod and piston can only be forced to move forward by using crowbars and hammers and other smashing tools from the rear end, especially the manual movement of more than ten It takes tons of gearbox to realize the separation of central tie rod and piston rod

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