Oil pressure sealing plunger slurry pump facilitating liquid mixing

Abstract

The invention discloses an oil pressure sealing plunger slurry pump facilitating liquid mixing. The oil pressure sealing plunger slurry pump comprises a fluid end and a power end. A plurality of liquid pumping systems are arranged between the hydraulic end and the power end; each liquid pumping system comprises a valve box assembly, a pull rod mounting sleeve and a transmission assembly; the transmission assembly comprises a pull rod, a pull rod sealing assembly, a plunger, a plunger sealing assembly, a plunger horizontal position fine adjustment assembly and a connecting rod. The plunger andthe connecting rod are connected through the plunger horizontal position fine adjustment assembly. The pull rod is connected with the connecting rod through the adjusting connecting assembly; the plunger horizontal position fine adjustment assembly comprises a plunger end cover, two metal inner clamping rings and two elastic outer clamping rings. A liquid inlet of each valve box assembly is connected with a liquid inlet pipe; and a liquid outlet of each valve box assembly is connected with a liquid outlet pipe. According to the slurry pump, single-liquid, double-liquid and multi-liquid exchange can be achieved, different proportions of liquid can be mixed, the liquid pumping pressure is stable, and the liquid is uniformly mixed.

Description

technical field [0001] The invention relates to the technical field of pumps, in particular to a plunger mud pump. Background technique [0002] Mud pump is a very important production equipment in the oil field industry and an important part of drilling equipment. It is mainly used for deep well and shallow well operations in oil fields. It can complete water blocking and oil displacement operations to oil wells, and can also be used for cement plugging during oil field workover. , channel sealing, well washing, sand washing and cementing operations, near- and long-distance transportation of crude oil and pressure testing, etc. In this process, it is often necessary to inject mixed mud solutions with different ratios. The existing multi-cylinder mud pumps have a stroke of It is fixed and does not adapt to the actual situation of different usage environments and different requirements for mud solution and mixing. [0003] The plunger of the existing mud pump is made of meta...

AI Technical Summary

Problems solved by technology

The plunger, sealing ring, liquid inlet valve and liquid outlet valve of the mud pump work under the conditions of high temperature, high pressure and high speed. The uneven pressure in the pump will cause the service life of these devices to be very short, and most of these parts are Metal material, the surface is easily corroded and worn, and must be replaced regularly, otherwise it is easy to leak and partially fail, causing safety hazards

Therefore, the operation and maintenance costs of the above types of pumps are high. Although people have thought of many ways, they have not been able to fundamentally solve the problem.

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