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Fluid end of reverse suction and discharge self-balanced type booster pump

A self-balancing, fluid end technology, applied in the field of reciprocating pumps, can solve problems such as burnout failures, insufficient lubrication of bearing bushes and crankshaft handles, etc., and achieve the effect of reducing plunger force

Pending Publication Date: 2018-08-17
NINGBO HELI MECHANICAL PUMP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the actual inlet pressure is higher than the design inlet pressure or the boost value is lower than the rated value, the direction of the resultant force on the forward and backward movement of the plunger is always backward, and there is always a force between the bearing bush and the crankshaft, so that the lubricating oil cannot enter the bearing bush. Sliding motion pair, resulting in burning failure of the bearing bush and crankshaft due to no oil lubrication or insufficient lubrication

Method used

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  • Fluid end of reverse suction and discharge self-balanced type booster pump
  • Fluid end of reverse suction and discharge self-balanced type booster pump
  • Fluid end of reverse suction and discharge self-balanced type booster pump

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Embodiment Construction

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0015] Such as figure 1 Shown is a schematic structural view of the hydraulic end of the reverse suction-discharge self-balancing booster pump of the present invention, including a pump body 1, a plunger 2, a suction valve 3, a discharge valve 4, etc., wherein:

[0016] The pump body 1 is provided with a plunger passage and a discharge valve passage which communicate with each other, and a plunger 2 and a discharge valve 4 are respectively provided. The plunger channel shown in the figure of this embodiment is arranged perpendicular to the centerline of the discharge valve channel.

[0017] The plunger 2 is set in the plunger channel through the sealing box body, the front and rear sealing pairs, etc., and can reciprocate back and forth, and the plunger channel is surrounded by the plunger 2, the sealing box body, the front and rear sealing p...

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Abstract

The invention relates to a fluid end of a reverse suction and discharge self-balanced type booster pump. The fluid end comprises a pump body, a plunger channel and an exhaust valve channel are arranged in the pump body, a plunger is arranged in the plunger channel, an exhaust valve is arranged in the exhaust valve channel, the plunger is a reducing-type plunger, adopts integrated structural designand is provided with a plunger large-diameter section and a plunger small-diameter section which are different in external diameter, intake valves making reciprocating motion along with the plunger are arranged on the reducing-type end faces of the large-diameter section and the small-diameter section, and the plunger large-diameter section is internally provided with a liquid inlet runner communicating with the intake valve. By means of the, the aim that reaction balance high inlet pressure can be achieved no matter how the pressures of an inlet and an outlet change is achieved.

Description

technical field [0001] The invention relates to the technical field of reciprocating pumps, in particular to a fluid end of a reverse suction-discharge self-balancing booster pump. Background technique [0002] The pressure of the medium at the inlet of the booster pump is high. Ordinary reciprocating pumps are used. The plunger moves reciprocatingly. The direction of force on the connecting rod and bearing pads at the power end is the same. The specially designed reciprocating booster pump adopts variable-diameter plunger, which has a certain function of balancing high inlet pressure, that is, within the rated range, it can ensure the condition and service life of the lubricating oil of the crosshead, connecting rod and crankshaft. However, due to changes in the actual operating conditions of the booster pump, that is, the inlet and outlet pressure conditions are often different from the designed pressure conditions. When the actual inlet pressure is higher than the design...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B53/14F04B53/02F04B53/12F04B53/18
CPCF04B53/02F04B53/125F04B53/14F04B53/18
Inventor 张生昌陈明海张鹤陈英峰王伟华
Owner NINGBO HELI MECHANICAL PUMP CO LTD