Design method of double-rotor internal-rotation constant pressure pump

Abstract

The invention relates to a design method of a double-rotor internal-rotation constant pressure pump, which is characterized in that the inner surface of a pump body (1) is provided with two groups of spiral grooves with opposite rotary directions, the normal sections of the spiral grooves are rectangular, and two eccentric sleeves (4) with opposite eccentric directions are sleeved on the axial surface of an eccentric shaft (5); two groups of spiral groove bodies (2) with opposite rotary directions are sleeved between the pump body (1) and the eccentric shaft (5), and two circular tracks (6) are respectively fixed on end covers at the outer end faces of the two groups of spiral groove bodies (2) with opposite rotary directions; a liquid inlet is respectively arranged at both ends of the pump body (1) and a liquid outlet is arranged at the middle part of the pump body (1) between the two groups of spiral groove bodies (2); and the inner surfaces of the spiral groove bodies (2) and the outer surface of the eccentric sleeve (4) are connected by arcs, the eccentric shaft (5) is connected with an end cover body of the pump body (1) by a bearing, and a liquid inlet and a liquid outlet are arranged at both ends of the pump body (1) or on the end cover body. The invention has high output pressure, good internal sealing effect, small volume, low noise and low energy consumption, can change the flow rate at constant pressure and can carry out the mixed output of liquid and gas.

Description

technical field [0001] The invention belongs to a design method of a displacement pump, in particular to a design method of a double-rotation internal rotation constant pressure pump. Background technique [0002] With the rapid development of my country's modern industry, a pump product with energy saving, environmental protection, high lift and constant output pressure is required in many fields. Urban high-rise water supply urgently needs constant pressure energy-saving and environment-friendly water pumps with variable flow rate and high lift; oil fields, especially offshore oil fields, urgently need advanced oil and gas multi-phase mixed pumps. However, existing pumps cannot meet the above requirements. [0003] Reciprocating pump: Although it is easy to achieve high lift, due to the complex structure and high pulsation caused by reciprocating, it will inevitably cause large noise, uneven flow rate and high manufacturing cost. [0004] Centrifugal pumps: high energy c...

AI Technical Summary

Problems solved by technology

Its main disadvantages are: ①The main rotor of the pump is a casing, and a coil spring is embedded in the main rotor, which is a split structure, which is difficult to withstand high pressure; ②The head of 300 meters shows that the sealing problem between the spirals has not been fundamental solve

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