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Device and method for diagnosing faults and testing performance of single-screw pump

A single-screw pump, fault diagnosis technology, applied in neural learning methods, pumps, pump components, etc., can solve problems such as increased pump failure rate, stator and rotor wear, and irregular installation.

Inactive Publication Date: 2016-06-08
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structural shortcomings of the single screw pump have also brought greater disadvantages to its application.
The matching method of the screw rotor and the bushing pair of the single screw pump is an interference fit, and the material of the bushing pair is generally rubber material, which is prone to wear of the stator and rotor during operation, resulting in an increase in the failure rate of the pump and a decrease in performance
In addition, irregular initial installation and untimely maintenance during operation will shorten the life of the pump and increase the frequency of failures.

Method used

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  • Device and method for diagnosing faults and testing performance of single-screw pump
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  • Device and method for diagnosing faults and testing performance of single-screw pump

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Experimental program
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Effect test

Embodiment 1

[0055] One of the purposes of the present invention is to design a set of single screw pump fault diagnosis and performance testing device, whose function is to remotely control the terminal equipment installed in the transfer station of the oil field ground gathering and transportation system through the monitoring center, so as to realize the operating conditions of the single screw pump Online monitoring, fault diagnosis and performance testing.

[0056] In order to achieve the above purpose, the single screw pump fault diagnosis and performance testing device provided by the present invention generally mainly includes terminal equipment and a monitoring center arranged in the transfer station of the oil field ground gathering and transportation system; the terminal equipment switches the working mode according to the control command , Collection of operating parameters and adjustment of operating conditions; the monitoring center realizes the monitoring of operating conditi...

Embodiment 2

[0116] This embodiment provides a method for diagnosing the fault of a single screw pump in normal production monitoring mode by using the device provided in Embodiment 1.

[0117] Normal production monitoring mode such as figure 1 indicated by the white arrow. During normal production, the electric control valves (15, 16, 19, 24) are closed by remote control, the performance test pipeline is in a deactivated state, the electric control valves (11, 14) are opened, and the wellhead produced fluid passes through the An oil collecting manifold 34 enters each booster pipeline, and after being pressurized by each single screw pump, enters the oil collecting main line through the second oil collecting manifold 38 to complete the boosting process. During this process, each wireless sensor node collects the operating state parameters of the single screw pump, and transmits the collected parameters to the monitoring center through the ZigBee / GPRS network to realize online real-time mo...

Embodiment 3

[0178] Performance testing, realize the detection of performance parameters such as displacement, volumetric efficiency, power and total efficiency of single screw pump under different working conditions, and complete the drawing of performance curves such as flow rate-lift, efficiency-lift, shaft power-lift, etc. To grasp the current performance status of the single screw oil-gas mixed pump.

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Abstract

The invention provides a device and method for diagnosing faults and testing performance of a single-screw pump. The operation condition of the single-screw pump can be subjected to online monitoring, fault diagnosis and performance testing. Two work modes, namely, a normal production monitoring mode and a performance online testing mode are provided in the device. In the normal production monitoring mode, based on real-time monitoring on running parameters of the pump in the normal production process, the online monitoring of the operation condition of the pump is achieved; and online diagnosis of common faults of the pump can be completed by means of online detected data, and a maintaining strategy is made on the basis. In the pump performance testing mode, pump performance testing of an in-service single-screw pump / an out-of-service single-screw pump under a common operating condition / extreme operating condition can be achieved, the pump capacity efficiency, the shaft power, the lift, the overall efficiency and other performance parameters can be calculated under different operating conditions, and a performance curve is drawn and stored on the basis.

Description

technical field [0001] The invention belongs to the technical field of oil field testing, and relates to the fault diagnosis and performance test of multi-phase mixed transport pumps used in oil and gas gathering and transportation systems, in particular to an online fault diagnosis and performance test device for single screw pumps, and single screw pump fault diagnosis and performance testing. performance testing method. Background technique [0002] In crude oil gathering and transportation, using gas-liquid mixed pipeline to transport crude oil and natural gas separately can simplify the gathering and transportation process, shorten the design and construction time of the gathering and transportation project, reduce the investment of the gathering and transportation project, and improve Economic benefits of oil field development. In the development of oil fields in specific environments such as deserts and offshore, mixed pipelines have incomparable advantages over sing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C14/28F04C2/107G06N3/08
CPCF04C2/107F04C14/28F04C2210/24F04C2270/03F04C2270/05F04C2270/12F04C2270/18F04C2270/19F04C2270/80G06N3/084
Inventor 刘武董小桠谷雪琴钟煜
Owner SOUTHWEST PETROLEUM UNIV
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