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Prediction method for transient opening height of one-way valve for multiphase mixing transmission pump

A technology that enables height and prediction methods, applied in special data processing applications, instruments, electrical digital data processing, etc.

Active Publication Date: 2018-04-17
ZHEJIANG UNIV OF TECH
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Problems solved by technology

However, according to the literature search, it is found that the GPR model used to predict the transient opening height of the multi-phase mixed transmission check valve is not

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  • Prediction method for transient opening height of one-way valve for multiphase mixing transmission pump
  • Prediction method for transient opening height of one-way valve for multiphase mixing transmission pump
  • Prediction method for transient opening height of one-way valve for multiphase mixing transmission pump

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Embodiment Construction

[0045] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0046] as attached figure 1 As shown, an integrated probabilistic modeling and prediction method for the transient opening height of the check valve for multiphase mixed transport pumps includes the following steps:

[0047] (1) Select appropriate input variables and output variables for CFD simulation and GPR prediction model.

[0048] Since the transient opening height of the check valve is affected by many factors, such as inlet flow rate, gas content rate, valve core material, spring stiffness coefficient, viscosity and temperature of the conveying liquid, gas density and temperature, etc. Therefore, considering these influencing factors comprehensively, five parameters that can describe the main characteristics of the transient opening height are finally selected as the input variables of the model, that is, the inlet flow Q(5, 6, 7, 8m ...

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Abstract

The invention discloses a prediction method for a transient opening height of a one-way valve for a multiphase mixing transmission pump. The method comprises the following steps of (1) building a CFDtransient model of the opening height of the one-way valve under a frequency change oil-gas mixing transportation condition, and providing initial data for GPR experience modeling; (2) classifying M sets of samples provided by the CFD transient model, namely, classifying each set of CFD simulation data into L sample subsets; separately performing learning and training for each sample subset, and building GPR prediction sub-models of the transient opening height of the one-way valve; and (3) performing online assessment on the GPR prediction models and the CFD transient model, and selecting themost proper GPR and CFD models according to the online assessment, thereby realizing online and offline prediction of an input sample set defined in the specification.

Description

technical field [0001] The present invention relates to the technical field of modeling and prediction methods for important parameters in the design stage of multiphase mixed transportation pumps, and in particular to a general-purpose method for measuring the transient opening height of check valves used in mixed transportation pumps under complex frequency-variable oil and gas mixed transportation conditions. Nonlinear integrated probabilistic modeling and forecasting methods. Background technique [0002] The oil and gas mixed transportation pump is one of the key equipments to realize the closed and mixed transportation of oil and gas, which can effectively increase the recovery and utilization of associated natural gas resources in the process of oil exploitation. The outlet vertical check valve is an important hydraulic component of the reciprocating internal compression mixed pump, which provides the function of gas-liquid two-phase accumulation and boosting to ensur...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 刘毅邓鸿英张生昌高增梁
Owner ZHEJIANG UNIV OF TECH
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