Unlock instant, AI-driven research and patent intelligence for your innovation.

A Hybrid Modeling and Prediction Method for the Discharge Flow Rate of a Reciprocating Mixed Transport Pump

A technology of hybrid modeling and forecasting methods, applied in forecasting, data processing applications, instruments, etc., to achieve the effect of easy implementation

Active Publication Date: 2021-08-10
ZHEJIANG UNIV OF TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a literature search found that the hybrid model combining GPR and process characteristics for predicting the discharge flow rate of reciprocating mixing pumps has not

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Hybrid Modeling and Prediction Method for the Discharge Flow Rate of a Reciprocating Mixed Transport Pump
  • A Hybrid Modeling and Prediction Method for the Discharge Flow Rate of a Reciprocating Mixed Transport Pump
  • A Hybrid Modeling and Prediction Method for the Discharge Flow Rate of a Reciprocating Mixed Transport Pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] like figure 1 As shown, a kind of reciprocating mixed pump discharge flow rate mixing modeling and prediction method of the present invention comprises the following steps:

[0062] (1) Select the input variables and output variables of the GPR prediction model

[0063] Since the discharge flow rate of the reciprocating mixed pump is affected by many factors, such as inlet pressure, outlet pressure, gas content, crank angle, pump speed, clearance volume, etc. Therefore, considering these influencing factors and the design parameters of the experimental three-cylinder double-acting reciprocating mixed-transport pump prototype, the final selection of the inlet pressure P s (0.2, 0.25, 0.3, 0.35, 0.4MPa), outlet pressure P d (1.0, 1.5, 2, 2.5, 3MPa), air content rate β (0.1, 0.3, 0.5, 0.7, 0.8), crank angle θ (180° ~ end of discharge process) are input variables, without loss of generality, select the pump Flow rate Q in chamber 1 1 is the output variable;

[0064] (2...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a mixing modeling and forecasting method for the discharge flow rate of a reciprocating mixed delivery pump. It includes the following steps: (1) Establishing a Gaussian process regression GPR empirical model of the discharge flow rate of a pump chamber of a reciprocating mixed pump under the condition of frequency-variable oil-gas mixed transportation; (2) Establishing a stage identification method for the discharge flow rate curve of the pump chamber (3) optimize the GPR prediction results in stages based on the process characteristic information; (4) optimize the prediction results of the stage with large variance changes based on the global and weighted GPR combination model; (5) merge steps (3) and The result of (4), obtain the discharge flow rate curve of pump chamber; online forecast. The stage-by-stage hybrid modeling method of integrating GPR prediction uncertainty and process characteristic information proposed by the invention can realize the modeling and prediction of the discharge flow rate of the reciprocating mixed-transport pump under the mixed-transport working condition.

Description

technical field [0001] The present invention relates to the technical field of modeling and prediction methods for important parameters in the design phase of a multiphase mixed transportation pump, in particular to a hybrid modeling and prediction of the discharge flow rate of a reciprocating mixed transportation pump suitable for complex frequency-variable oil and gas mixed transportation conditions method. Background technique [0002] The reciprocating mixed pump has internal compression and anti-air resistance performance, which can effectively increase the output of oil and natural gas in the process of oil extraction. The pump uses the movement of pistons and inlet and outlet valves to achieve flow configuration. Ideally, the periodic motion of the piston and valve causes a regular change in the discharge flow rate curve over a stroke of the pump, resulting in a known flow pulsation. Under the actual mixed transportation conditions, the pump is in the state of conve...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/02
CPCG06Q10/04G06Q10/06315G06Q50/02
Inventor 刘毅邓鸿英张生昌
Owner ZHEJIANG UNIV OF TECH