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Method for establishing parameter system of centrifugal pump impeller

A technology for centrifugal pump impellers and establishment methods, which is applied in the field of parameter system establishment of centrifugal pump impellers, can solve problems such as poor system robustness, many parameters system variables, and low operating efficiency of optimization algorithms, so as to improve robustness and facilitate architecture Effects of design, dimensionality reduction, and scope

Pending Publication Date: 2020-10-02
南京瑞迪建设科技有限公司
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for establishing a parameter system of a centrifugal pump impeller to solve the technical problems in the prior art that the parameter system of the centrifugal pump impeller has many variables, the operation efficiency of the optimization algorithm is low, and the system has poor robustness

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  • Method for establishing parameter system of centrifugal pump impeller
  • Method for establishing parameter system of centrifugal pump impeller
  • Method for establishing parameter system of centrifugal pump impeller

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Embodiment 1

[0022] Such as Figure 1 to Figure 9 As shown, taking the design of a centrifugal pump as an example, the design parameters of the pump are shown in Table 1:

[0023] Table 1 Centrifugal pump design parameter table

[0024] parameter value unit flow 0.998 m 3 / s

lift 3.583 m Rotating speed 5621 rpm density 1000 kg / m 3

[0025] The design requires that the diameter of the impeller is within 30mm, the lift cannot be lower than 3.583m, and the efficiency is as high as possible.

[0026] This pump is the power unit that circulates the cooling water in the motor vehicle. Therefore, its design parameters have two obvious special features: the flow rate is small and the speed is high. With such special parameters, even for experienced engineers, it is difficult to guarantee the success rate of the design, and repeated attempts are required. This particular design task can obviously be solved as an optimization problem.

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Abstract

The invention discloses a method for establishing a parameter system of a centrifugal pump impeller, belongs to the technical field of centrifugal pump impellers, and aims to solve the technical problems that in the prior art, the parameter system of the centrifugal pump impeller has many variables, the operation efficiency of an optimization algorithm is low, and the robustness of the system is poor. The method comprises the steps: establishing a co-linking relationship for the parameter system; establishing a universal constraint relationship for the parameter system; and adding auxiliary constraints to the parameter system according to the optimization problem. According to the method, a parameter system with a frame hierarchical structure is constructed, and a free parameter corresponding to each geometrical characteristic belongs to a specific hierarchy; by establishing a cooperative relationship and a constraint relationship for a parameter system, firstly, the dimensionality andrange of a parameter space can be reduced, and the working efficiency of an optimization system is improved in an exponential level; secondly, most unreasonable combination parameter combinations canbe eliminated, stable operation of a feedback mechanism of the optimization system can be ensured, and the robustness and the operation efficiency of the optimization system are improved.

Description

technical field [0001] The invention belongs to the technical field of impellers of centrifugal pumps, and in particular relates to a method for establishing a parameter system of impellers of centrifugal pumps. Background technique [0002] Impeller machines, such as steam turbines, water turbines, vane pumps, air compressors, fans, etc., are power conversion equipment widely used in agriculture and industry, and play an important role in the development of the national economy and the improvement of living standards. [0003] Among vane pumps, centrifugal pumps are the most widely used. It is indispensable in chemical industry, construction, iron and steel metallurgy, municipal administration, building water supply and drainage, heating, agriculture, water conservancy engineering, fire protection and other industries. Although it has been used in various industries for a long time, judging from the current level of development of water pumps, there is still a lot of work ...

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Application Information

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IPC IPC(8): G06F30/17G06F111/04
CPCG06F30/17G06F2111/04
Inventor 喻石李继才李月先丛建朱国忠曹军孙晨张健翼
Owner 南京瑞迪建设科技有限公司