Adjustable-flow injection pump
A technology for injecting pumps and suction valves, which is applied in the direction of pumps, pump control, liquid displacement machinery, etc., and can solve problems such as leakage of sealing devices, inconvenient maintenance of pumps, and low service life of seals
Active Publication Date: 2013-04-03
王湫锂
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Problems solved by technology
[0004] 1. The proportional adjustment pump adopts the follow-up plunger structure, the life of the spring in the follow-up plunger structure is low; the vibration and noise of the retaining ring are large; the leakage of the sealing device is serious;
[0005] 2. The linear switch control type proportional adjustment pump has a low service life of the seals;
[0006] 3. Pump maintenance is inconvenient
Method used
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[0023] A volume-adjusting injection pump, which includes: a pump base 1, a power end 2, a transmission end 3 and a fluid end 4; the power end 2, the transmission end 3 and the fluid end 4 are installed on the pump base 1, and the transmission end 2 and The hydraulic end 4 is connected; the hydraulic end 4 includes 3 hydraulic cylinders, and each hydraulic cylinder of the hydraulic end 4 includes: a hydraulic cylinder body 5, a plunger 6, a packing 7, a suction valve 8 and a discharge valve 9 ; There is a suction valve 8 and a discharge valve 9 in the liquid cylinder, the plunger 6 reciprocates in the stuffing box 10, a packing 7 is provided between the plunger 6 and the stuffing box 10, and guide sleeves are provided at both ends of the packing 7 11. It is characterized in that it also includes a pump flow regulating actuator, which is installed at the lower end of the suction valve 8 of the pump. It is composed of a push rod 12, a guide block 13, an eccentric shaft 14, a motor...
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The invention relates to an adjustable-flow injection pump, in particular to an injection pump capable of realizing automatic flow adjustment at each connection, belonging to the technical field of oilfield equipment. A low-pressure backflow structure is adopted. The ineffective stroke of the pump is realized by controlling media in a low-pressure state to flow back into a suction chamber. When the pump is in an effective stroke, a suction valve is closed by controlling a servo motor, an eccentric shaft, an ejector rod and the like. The flow of the pump can be accurately controlled. Not only can the injection of one medium be realized, but also the proportional injection of two or even three kinds of media can be realized by dividing the inlet of the existing single pump into two inlets or three inlets. For example, at places where gathering stations for injection are inconvenient to construct, high-pressure water is not required to be fed and the high-pressure injection and mixing of low-pressure water and polymers are realized directly through the pump.
Description
[0001] technical field [0002] The invention relates to a volume-adjusting injection pump, in particular to an injection pump capable of automatic flow adjustment for each connection, which belongs to the technical field of oil field equipment. Background technique [0003] As the oilfield enters the late stage of high water cut production, the tertiary oil recovery technology represented by three-element injection and polymer flooding has become an important technical means to improve oil recovery and continue to extend the stable production period of the oilfield. Subsequently, three-way injection pumps and polymer injection pumps were produced. According to the number of wells injected by each pump, they were divided into single-pump single-well, one-pump multi-well and one-pump three-well processes. At present, the injection process system of one pump and three wells mainly uses the proportional regulating pump, but the proportional regulating pump has the following ...
Claims
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Patent Timeline
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Inventor 王湫锂
Owner 王湫锂