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Multiphase pump

A multi-phase pump and pump shaft technology, applied in the field of multi-phase pumps, can solve the problems of not significantly reducing the hydraulic efficiency of the multi-phase pump, reducing rotor vibration, etc.

Pending Publication Date: 2021-11-23
SULZER MANAGEMENT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] It is therefore an object of the present invention to propose a multiphase pump with improved rotor damping such that rotor vibrations are significantly reduced without significantly reducing the hydraulic efficiency of said multiphase pump

Method used

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Examples

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Embodiment Construction

[0053] figure 1 A schematic cross-sectional view of a first embodiment of a multi-phase pump according to the present invention is shown, which is expressed as reference numeral 1. The pump 1 is designed as a centrifugal pump for conveying the multiphase process fluid. The pump 1 has a pump housing 2, and the rotor 3 is disposed in the pump housing 2. The rotor 3 is configured to rotate around the axial direction a. In order to rotate the rotor 3 and set the drive unit 4. exist figure 1 In the embodiment shown in the present, the drive unit 4 is also disposed inside the pump housing 2. It is self-evident, in other embodiments of the multi-phase pump, the drive unit is disposed outside the pump housing 2, such as in a separate motor housing.

[0054] exist figure 1 In the first embodiment shown in the present, both the rotor 3 and the drive unit 4 are arranged in the pump housing 2. The pump housing 2 is designed as a pressure housing which is configured to be subjected to pressur...

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Abstract

A multiphase pump for conveying a multiphase process fluid is provided, comprising a pump housing, and a rotor arranged in the pump housing and configured for rotating about an axial direction, wherein the rotor comprises a pump shaft and at least one impeller fixedly mounted on the pump shaft, wherein a stationary diffuser is arranged adjacent to and downstream of the impeller, wherein the impeller comprises at least one blade with each blade having a radially outer tip, and wherein the impeller comprises a ring surrounding the impeller and arranged at the radially outer tip of the blade, wherein a passage is provided between the ring and a stationary part configured to be stationary with respect to the pump housing, the passage extending in the axial direction from an entrance to a discharge, wherein at least one swirl brake is provided at the passage, and wherein the swirl brake is configured and arranged to brake a swirl of the process fluid passing through the passage.

Description

Technical field [0001] The present invention relates to a multiphase pump for delivering a multi-phase process fluid according to the preamble of the independent claim. Background technique [0002] Multiphase pumps are used in many different industries. In these industries, transport multiphase process fluids are required, and the multiphase process fluid includes a plurality of phases (e.g., liquid phase and gas phase) mixtures. Important examples are oil and gas processing industries in which multiphase pumps are used to deliver hydrocarbon fluids, for example for extracting crude oil from oilfield or for oil / gas through pipe or transport within the refinery. [0003] Fossil fuels are generally not present in the oil field or gas field in pure form, but as a multiphase mixture comprising a liquid component, a gas component, and a solid component may further comprise a solid component. This multiphase mixture such as crude oil, natural gas, chemical, sea water and sand must b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D31/00F04D29/66F04D29/44F04D29/54
CPCF04D31/00F04D29/667F04D29/669F04D29/444F04D29/448F04D29/542F04D29/548F04D13/086F04D29/668F04D1/06F04D3/00F04D29/086F04D29/528F04D29/66F04D29/661
Inventor K·德莱芙B·库斯T·威尔斯兴格
Owner SULZER MANAGEMENT AG
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