Device for resisting gasification of aerogenesis liquid medium of plunger pump

Abstract

The invention relates to a device for resisting gasification of an aerogenesis liquid medium of a plunger pump, wherein the device for resisting gasification of the aerogenesis liquid medium of the plunger pump comprises an adjusting manifold; the adjusting manifold is used for adjusting a reflux flow and keeping a constant pressure and a constant temperature in a liquid inlet cavity of the plunger pump; the adjusting manifold comprises a throttle valve, a check valve, a reflux pipeline and a heat exchange booster; an inlet of the throttle valve is arranged in a channel of the liquid inlet cavity of the plunger pump or communicated with the liquid inlet cavity of the plunger pump; an outlet of the throttle valve is communicated with an inlet of the check valve; an outlet of the check valve is communicated with a liquid inlet of the heat exchange booster through the reflux pipeline; a liquid outlet of the heat exchange booster is communicated with a reflux end of an aerogenesis liquid medium storage tank. Compared with the prior art, the device for resisting gasification of the aerogenesis liquid medium of the plunger pump is simple to operate and strong in practicability; the device for resisting gasification of the aerogenesis liquid medium of the plunger pump is matched in a reciprocating plunger pump, so that the problem of a gasification process during conveying the aerogenesis liquid medium through the normal plunger pump can be avoided, thus reliable equipment support is provided for conveying other aerogenesis liquid mediums such as liquid CO2.

Description

technical field [0001] The invention relates to a plunger pump anti-gasification liquid medium vaporization device. Background technique [0002] Injecting liquid carbon dioxide is one of the effective ways to increase the recovery rate of the tertiary oil recovery huff and puff process in today's oilfields. It is also a reinjection method adopted to improve environmental protection and reduce carbon dioxide emissions. Indispensable main equipment in the process. The mysterious liquid carbon dioxide has been widely used in new fields to promote the development of the national economy. The working characteristics of liquid carbon dioxide are quite special. Generally, it can be transported normally only when it is guaranteed to be 100% liquid, otherwise it will be gasified until the transmission equipment The air lock is not working properly. At present, the conveying equipment of liquid carbon dioxide is completed by reciprocating plunger pumps and canned pumps. Generally, ...

AI Technical Summary

Problems solved by technology

In actual field work, the plunger pump often cannot run smoothly in a 100% liquid state, because the plunger of the plunger pump will be subjected to friction during reciprocating operation to generate heat, and the carbon dioxide liquid will absorb the heat, while the carbon dioxide liquid Once it is heated, it will be vaporized, and when the air content in the pump chamber of the plunger pump reaches a certain amount, it will be air-locked. At this time, the working efficiency of the plunger pump will gradually decrease until it has no effect (no flow, no pressure)

At present, the domestic liquid carbon dioxide injection is technically unstable, and the whole set of carbon dioxide injection equipment will fail to meet the normal injection requirements for liquid carbon dioxide due to certain mismatching factors between the injection pump and carbon dioxide gas-liquid when the whole set of carbon dioxide injection equipment is in operation.

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