Kirjoittaja Aihe: Clearance Optimization of All-Metal Progressing Cavity Pumps (Luettu 457 kertaa)

upamfva · 14.04.23 - 08:04

Clearance Optimization of All-Metal Progressing Cavity Pumps

The stator and rotor of an all-metal screw pump are made of metal; so the matching method of the all-metal screw pump cannot be like that of the traditional rubber screw pump, and a certain gap must be reserved. If the gap is too small, it will affect the normal operation of the pump. If the gap is too large, the pump leakage will also become larger, affecting the efficiency of the pump. In this paper, the method of numerical simulation is used to optimize the gap of the pump. At the same time, it is found that the optimal gap of the pump is closely related to the viscosity of the fluid transported by the pump, and different viscosity fluids have different optimal speeds. The speed and clearance of the pump are optimized through numerical simulation to ensure high pump efficiency while taking into account energy saving and avoid the waste caused by excessively high speed. Finally, the relevant research results of numerical simulation are verified through experiments, and it is found that the experimental results are in good agreement with the simulation results, which also proves the accuracy of the numerical simulation results.To get more news about screw pump stator, you can visit hw-screwpump.com official website.
As a kind of mechanical oil production equipment, the screw pump has a long history. The screw pump has many advantages, such as low price, simple structure, and so on. (1−4) The stator of the traditional screw pump is composed of rubber. The manufacturing process of such a rubber screw pump is simple, but in a high-temperature environment, the rubber is easy to age. (5) In the field of oil mining, workers often adopt the mining method of heating the formation to reduce the viscosity of crude oil and artificially create a high-temperature environment to improve the recovery factor. (6−10) Therefore, the application of traditional rubber screw pumps is limited, and all-metal screw pumps came into being. (11−14) The stator and rotor of the all-metal screw pump are composed of metal. In order to ensure successful assembly, there must be a gap between the stator and the rotor, but this will cause leakage. (15−17) If the gap is too large or too small, it will seriously affect the pump efficiency; so the optimization of the gap size affects the design and use of the entire pump. (18−20)
Because of the gap, there is leakage in the pump. Pessoa et al. (21) analyzed the leakage in the pump by establishing a flow model. Nguyen et al. (22) established a new fluid model to simulate the actual flow of the fluid. Zheng et al. (23) in China also studied the analytical model for the flow in all-metal screw pumps, and it is considered that the turbulent leakage of the pump is more complicated than the laminar leakage. Our previous article (24) also carried out related research on the leakage of the all-metal screw pump but did not further optimize the gap between the stator and rotor. Jiang et al. (14) in China used numerical simulation to optimize the gap of the all-metal screw pump but did not further study the speed optimization of the screw pump.
In order to ensure the successful assembly of the all-metal screw pump, a certain clearance must be left between the stator and rotor. If the clearance value is too small, it will affect the life of the pump; if the clearance value is too large, the leakage is serious, affecting efficiency. All-metal screw pumps often work in a high-temperature working environment. High temperatures will cause objects to expand, which will inevitably affect the clearance value. Therefore, it is very important to optimize the clearance value between the stator and rotor.

wellthisisme · Vastaus #1 03.06.23 - 13:55

wellthisisme · Vastaus #2 03.07.23 - 05:42

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wellthisisme · Vastaus #3 03.07.23 - 09:52

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wellthisisme · Vastaus #4 10.09.23 - 21:51

wellthisisme · Vastaus #5 11.09.23 - 05:59

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wellthisisme · Vastaus #6 03.10.23 - 04:35

wellthisisme · Vastaus #7 02.12.23 - 09:18

wellthisisme · Vastaus #8 02.02.24 - 12:33

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