Automatic adjustment method for centrifugal pump front guide vane and device for automatic adjustment method

A pre-guide vane and automatic adjustment technology, which is applied to components, pumps, and pump control of elastic fluid pumping devices, can solve the problems of low automation, achieve good flow adjustment effects, save human resources, The effect of short adjustment time

Active Publication Date: 2016-08-03
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to solve the problem that the adjustment of the existing cascade opening needs to rely on experience for manual adjustment, the degree of automation is low, and it is impossible to automatically and real-time control the cascade opening under different working conditions

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  • Automatic adjustment method for centrifugal pump front guide vane and device for automatic adjustment method
  • Automatic adjustment method for centrifugal pump front guide vane and device for automatic adjustment method

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Embodiment Construction

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] In this embodiment, Kriging interpolation means Kriging or Kriging interpolation in Chinese, and the Kriging method is an advanced geostatistical process for generating an estimated surface through a set of scattered points with z values. Kriging interpolation not only has the function of producing a forecast surface, but also provides...

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Abstract

The invention relates to the technical field of universal machinery hydraulic performance optimization, in particular to an automatic adjustment method for a centrifugal pump front guide vane and a device for the automatic adjustment method. According to the automatic adjustment method, provided by the invention, for the centrifugal pump front guide vane, firstly, overall performance data samples of a coded centrifugal pump and the coded front guide vane are written in a computer and led in a single chip microcomputer control unit; then current centrifugal pump flow and the guide vane opening degree are obtained through a flow detection unit and an angle sensor correspondingly and are transmitted to the single chip microcomputer control unit; moreover, a Kriging interpolating calculation module is adopted for predicting hydraulic performance under the current centrifugal pump flow, and the optimal guide vane opening degree is determined through an optimization algorithm module; finally, based on the difference value of the current guide vane opening degree and the optimal guide vane opening degree, a PID control module is adopted for controlling a stepping motor to reach the optimal guide vane opening degree; and a guide vane opening degree control mechanism with automatic feedback adjustment is established based on a Kriging algorithm, so that the centrifugal pump is controlled to be in the optimum operating condition, and thus operation energy saving is achieved.

Description

technical field [0001] The invention relates to the technical field of hydraulic performance optimization of general machinery, in particular to an automatic adjustment method and device for the front guide vane of a centrifugal pump, and in particular to an automatic and real-time control of the opening of the cascade under unstable working conditions An automatic adjustment method and device for the front guide vane of a centrifugal pump. Background technique [0002] As a general-purpose machine, the pump has a wide range of applications but consumes a lot of energy at the same time. The centrifugal pump is widely used in industrial and agricultural fields because of its strong adaptability to flow and conveying medium, small size, simple structure, easy operation and low cost. [0003] However, in the actual engineering on the ground, due to the unreasonable design of the flow pipe network system, the improper selection of the pump unit system (pump unit and its driving...

Claims

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Application Information

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IPC IPC(8): F04D27/00F04D29/46
CPCF04D27/002F04D29/448F04D29/466F05D2270/62F05D2270/706
Inventor 张永学周鑫徐畅
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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