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Journal of Drainage and Irrigation Machinery Engin
 
2000 Vol.18 Issue.2
Published 2000-03-25
article
Article
1 A NEW WAY OF CALCULATING SPIRAL PARAMETERS OF A GUIDE VANE
Yan Jing
The throat size of the guide vane used in multistage pumps is of importance to pump characteristics. The author of this paper presented a new programme in which the throat size is given previously to shape the spiral of the guide vane, aiming at improoing the pump hydraulic efficiency.
2000 Vol. 18 (2): 1-2 [Abstract] ( 988 ) [HTML 1KB] [ PDF 190KB] ( 1376 )
3
2000 Vol. 18 (2): 3-4 [Abstract] ( 1011 ) [HTML 1KB] [ PDF 98KB] ( 1337 )
5 ANALYSIS FOR THE STARING PROCEDURE OF SYNCHRONOUS MOTOR WITH PARALLELED CAPACITOR
Shi Wangwang, Yang Peng, Wu Guifeng
It presents the hybrid starting model of synchronous motor with paralleled capacitor and simulating results including stator current, stator voltage, speed, torque, field current. The simulating results comparing with direct starting show its efficiency in compensating voltage, reducing starting time. It is not necessary to change the state equation when network is changed in stator.
2000 Vol. 18 (2): 5-7 [Abstract] ( 872 ) [HTML 1KB] [ PDF 208KB] ( 1332 )
8 THE APPLICATION OF SUBMERSIBLE ELECTRIC MOTOR PUMP IN PUMP STATION
Liu Dongyan
Based on the investigation of the Submersible Electric Motor Pump’s present situation in ShengYang, this paper Summarizes its advantageous and the existing problams, and puts forward some countermeasures. Which helps to the application of the Submersible Electric Motor Pump in pump statins.
2000 Vol. 18 (2): 8-10 [Abstract] ( 984 ) [HTML 1KB] [ PDF 168KB] ( 1281 )
11
2000 Vol. 18 (2): 11-13 [Abstract] ( 907 ) [HTML 1KB] [ PDF 100KB] ( 1387 )
14
2000 Vol. 18 (2): 14-16 [Abstract] ( 810 ) [HTML 1KB] [ PDF 84KB] ( 1214 )
16
2000 Vol. 18 (2): 16-17 [Abstract] ( 875 ) [HTML 1KB] [ PDF 59KB] ( 1388 )
18 CAD/CAPP INTEGRATED SYSTEM FOR BLANKING AND DRAWING DIE OF THE PUMP SEALING BOX
Tao Miaosen, Ren Jianmin, Gao Xiaofen
This paper researches the integrated [system of CAD/CAPP for pump’s technological equips. Withthe commodity software development, we make second development. We collect the properties of the technological equip design in characteristic information of the product. By technological equip designing and calculateing, auto drafting and auto forming process chart the paper brings about CAD/CAPP integration for technological equip.
2000 Vol. 18 (2): 18-20 [Abstract] ( 1204 ) [HTML 1KB] [ PDF 205KB] ( 1281 )
20
2000 Vol. 18 (2): 20-21 [Abstract] ( 952 ) [HTML 1KB] [ PDF 77KB] ( 1297 )
22 ON THE SMALL AND MIDDLE SIZE ENTERPRISES WINING THE COMMERCIAL COMPETITIONS
He Qin
Competition is the key point of market economic system. According to their specialties and using right marketing strategies and through continual technical innovations, the key of how the small and middle size enterprises win the severe commercial competitions is discussed in this article.
2000 Vol. 18 (2): 22-24 [Abstract] ( 1036 ) [HTML 1KB] [ PDF 125KB] ( 1626 )
24
2000 Vol. 18 (2): 24-24 [Abstract] ( 986 ) [HTML 1KB] [ PDF 75KB] ( 1799 )
25 A METHOD FOR MEASURING THE SPACE BOWL VANES
Yu Huaming, Cheng Maosheng, Xue Jichang, Chen Maojun
This article introduces a method for measuring practical and accurate space bowl vanes’. Firstly, survey each relevant dimension of bowl as per sample, and draw the outline drawing, then remove the outer casing, while remaining one to two vanes to draw contour lines, survey radius dimensions from each point of vane’s interior and exterior streamline at the contour lines to centre line, to draw the bowl’s section passing centre line’s projection drawing. Following step is to draw a vertical section passing bowl’s axis at the left side of vane’s working surface, this section is to intersect with bowl’s inner casing’s outer surface and survey the chord dimension from each point of interior and exterior streamline at one side of the vanes to each intersection point between the vertical section and bowl’s inner casing’s outer surface, and takes the use of triangular function’s computing method to get every coordinate on the streamline at one side of the vane’s working surface, on the basis of this, to draw the expanded view of vane’s inner and outer streamlines. Finally, to survey vane’s each points’ circumference thickness S u, and draw the back side’s streamline. In this way, we have surveyed a lot bowl samples, after samples’ sending and customer’s testing , all performance are qualified and won our customer’s approval.
2000 Vol. 18 (2): 25-26 [Abstract] ( 1147 ) [HTML 1KB] [ PDF 256KB] ( 1591 )
27 THE RESEARCH AND MANUFACTURE OF A CONTROL SYSTEM USED FOR MEDIUM AND MINI PUMP STATION
Zhao Weidong, Chen Hongxun
A cheap and trustworthy control system designed for medium and mini pump station. This system provides three types of control model for user to select, and can protect the pumps from damage during running process. The system’s core component is an 80C31 single-chip computer.
2000 Vol. 18 (2): 27-29 [Abstract] ( 957 ) [HTML 1KB] [ PDF 177KB] ( 1265 )
30 A NOVEL DEVICE:ZKK AUTOMATIC PROTECTOR FOR DEFAULTING THREEPHASE ALTERNATION CURRENT MOTOR
Pen Sanhe, Wei Meisheng, Tan Yuefeng
This paper introduces the main technological indices, application and working performance of a novel muti-functional device, ZKK Automatic protector for defaulting threephase alternating current motor, for reference of customers from different industries and bussiness.
2000 Vol. 18 (2): 30-31 [Abstract] ( 1106 ) [HTML 1KB] [ PDF 128KB] ( 1183 )
32 HOW TO FULLY USE THE O SEALING RING FUNCTION EFFECT
Zhao Lixin, Ding Xiaoling, Zhang Yemin, Zhang Jun
Above all,it analyze the sealing mechanism of O sealing ring in static and dynamic devices.By this ,raise some practical and effective measures to bring sealing ring function and effect into full play in many ways,such as improving superficial processing quality,choosing proper velocity in motion and sealing gap,improving O sealing ring quality and so on.By experiments and scientific data,it expound and prove that the service life and sealing function of O sealing ring relate directly to service conditions,assembly quality,processing precision,lubricating conditions and dustproof measure etc.Thereby,it provide scientific directive proposal to bring O sealing ring function and effect into full play at practical use.
2000 Vol. 18 (2): 32-34 [Abstract] ( 976 ) [HTML 1KB] [ PDF 183KB] ( 1265 )
35 ISO14000 ADN DRAINAGE AND IRRIGATION INDUSTRY
Xie Zhenyu
Following with the economic globalization and the trend of the enforcement to the environment protection over the world, the drainage and irrigation industry in our country will face with the new chance and challenge. Because of the crucial competition between the companies, one enterprise’s survival and further development become more dependent on the quality and level of the environment management. For this reason, it is very necessary to introduce and extend ISO14000, which is prevalent in the world, to our drainage and irrigation enterprise. In order to deeply understand the ISO14000, we expounded the difference and connection between the ISO14000 and the ISO9000. Basing on the understanding of the ISO14000, we put foreword the establishing steps of the environment management system in the enterprise. At last, for the enterprise and human being’s future, combining with the feature and practical situation in our drainage and irrigation industry, with the strategy eye on the world and future, we advocate the enterprises in our drainage and irrigation industry bring in and implement the ISO14000, and finally struggle to be granted.
2000 Vol. 18 (2): 35-37 [Abstract] ( 1027 ) [HTML 1KB] [ PDF 158KB] ( 873 )
38 COMPLEX MODE AND VIBRATION ANALYSIS OF A THREE DIMENTION TUBE WITH REQUID SOLID COUPLING
Yang Chunli
When a three dimention tube system is acted with varing parameters of a liquid, its form of structure mode is given in this paper. The requid solid coupled model of the tube which has right angle bend is got by complex mode synthesis. The calculated results are contracted with the tested ones.
2000 Vol. 18 (2): 38-39 [Abstract] ( 1066 ) [HTML 1KB] [ PDF 164KB] ( 1261 )
40
2000 Vol. 18 (2): 40-42 [Abstract] ( 907 ) [HTML 1KB] [ PDF 122KB] ( 1303 )
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