A Three-Dimensional Intrinsic Property Method for Obtaining Suter Curve of Water Pump
A technology for internal characteristics and water pumps, which is applied in the field of three-dimensional internal characteristic method for obtaining Suter curves of pumps, can solve the problems of large difference between Suter curves and affect the calculation accuracy of water hammer in pumping stations, and achieves the effect of high accuracy and improved calculation accuracy.
Active Publication Date: 2019-05-21
CHINA AGRI UNIV
View PDF1 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Because the Suter curve obtained by this method is very different from the actual one, it often affects the calculation accuracy of the water hammer in the pumping station
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0046] Such as image 3 As shown, the two-stage double-suction centrifugal pump of the present invention includes a primary water suction chamber 4, a primary impeller 5, a primary pressure water chamber 6, a connecting part 7, a secondary water suction chamber 8, a secondary impeller 9 and a secondary Pressurized water chamber 10. Among them, the rated flow rate of the two-stage double-suction centrifugal pump is 0.22 cubic meters per second, the rated head is 56 meters, and the rated speed is 1490 rpm.
[0047] 1) For the hydraulic model of the two-stage double-suction centrifugal pump, the primary water absorption chamber 4, the primary impeller 5, the primary pressure water chamber 6, the connecting part 7, the secondary water absorption chamber 8, the secondary impeller 9 and the secondary pressure water chamber The water body within 10 is modeled three-dimensionally to obtain the computational domain of the two-stage double-suction centrifugal pump.
[0048] 2) Mesh th...
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
Login to View More Abstract
The invention relates to a three-dimensional internal characteristic method for obtaining a Suter curve of a water pump. The method comprises the following steps that firstly, a hydraulic model of the water pump is established, and three-dimensional modeling is carried out on a water area in the hydraulic model of the water pump; secondly, the three-dimensional model is subjected to grid partitioning; thirdly, according to a four-quadrant characteristic curve of the water pump, a plurality of rays are made outwards from the origin of coordinates to equally partition the four-quadrant area, one water pump calculated operating point is selected on each ray, the relative rotating speed of the water pump is determined, the relative flows of the multiple water pump calculated operating points and a water pump rated operating point are calculated based on a water pump similarity formula to determine boundary conditions, a calculation method of the three-dimensional model and a turbulent flow model are selected, three-dimensional flow fields of the water pump rated operating point and the water pump calculated operating points are then calculated, and the water pump relative lift and the relative torque of the water pump calculated operating points are obtained; fourthly, based on the pump similarity theory, the water pump relative rotating speed, the relative flow, the relative lift and the relative torque of the water pump calculated operating points are converted into the Suter curve used for water hammer analysis of a pump station. By means of the method, the Suter curve of the water pump can be accurately obtained in time.
Description
technical field [0001] The invention relates to a three-dimensional internal characteristic method for obtaining a Suter curve of a water pump, and belongs to the technical field of hydraulic engineering pumping stations. Background technique [0002] Water pumping stations are widely used in cross-basin water transfer, agricultural irrigation, urban water supply and other fields. If it is to ensure that no harmful water hammer occurs in the water pumping station, it is necessary to carry out more accurate water hammer calculation and analysis in the design stage of the pumping station. Among them, the Suter curve of the water pump plays a vital role in the calculation accuracy of the water hammer in the pumping station. Generally speaking, the Suter curve of the water pump needs to be obtained through the water pump model test. For the pumping stations in the initial design stage, or the pumping stations that need to be rebuilt because they were built earlier, it is often...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06T17/20G06T11/20
CPCG06F30/23G06T11/206G06T17/20
Inventor 王福军王玲黎珉
Owner CHINA AGRI UNIV