The system is based on the inner pid regulate function of frequency converter to regulate the living water stress with low constant stress , and the stress signal is sensed by the stress translator as feedback signal and the construction is sent by the computer as the given signal . the water stress is regulated to high constant stress when the fire happens 本论文基于变频器内置pid调节系统，以管网的压力变送器压力信号作为反馈信号，由上位机发出的当前状态作为给定输出，调节生活供水压力使其保持低恒压状态；当火灾发生时，调节系统管网压力为高恒压状态。
Jqs1series water - submersible3 - phase asynchronous motors adopt a wet water - filling sealed construction and major used in 8 ” , 10 ” well diameter of deep - well to drive the water submersible pumps to lift underground water for plants , mines agricultural drainage and irrigation as well as for city living water required Jqs1系列井用潜水三相异步电动机为湿式充水密封型结构，主要用于8 ” , 9 ”深井中驱动潜水泵提取地下水，为城市工矿企业，农业灌溉和居民生活提供生产和生活用水。
( 2 ) the measure for water resource to support the regional sustainable development is to exploiting the new source and saving the water resource , and in guanzhong area , the efficient method is saving the water resource , especially from agriculture , industry and living water demand . ( 3 ) on the basis of gm ( 1 , 1 ) model , the economic water demand in guanzhong area in 2005 and 2010 is forecasted , and the eco - environmental water demand is also forecasted 指出对关中地区而言，应以节流为基础，开源与节流并重；坚持“节流优先、治污为本、多渠道开源”的原则；开源应以城市雨水资源化，适当开采地下水(北山岩溶水) ，秦岭北坡建地下水库，水土保持及净化水回用等为主；节流主要从农业、工业、居民生活三方面来进行，以农业节水为主导。
The system is integrated with the living water supply and fire fighting water supply . the system is with the virtue of energy saving , smaller volume , lower investment , higher reliability and easier for maintenance and manage compared with the traditional water supply method with tower and bank 该系统改变了以前生活和消防两套独立供水的模式，同时克服了传统有塔有箱供水方式的缺点，是一种节能、占地少、投资小、系统安全可靠、维护和管理方便的供水控制系统。
The main study content includes : the sustainable utilization of water resource to regional sustainable development in guanzhong area ; the study of eco - environmental water , industrial water and living water in guanzhong area ; the supporting capacity of water resource in guanzhong area to its sustainable development ; the measures for the sustainable utilization of water resource 主要研究内容包括：水资源对区域可持续发展支持能力的系统解析；关中地区生产、生活和生态需水量；以及水资源对关中地区社会、经济和生态环境可持续协调发展的支持能力；水资源可持续利用的途径与对策。
The studying on the mechanism of beiyin main channel gliding slope heilongjiang beiyin project lies in the west of heilongjiang which lies the center of nenjiang . geographical location is east longitude 124 - 126 ? and north latitude 46 - 48 ? . aims of the project are providing water to petrol and chemical industry of daqing and living water . at the same time it is also a big comprehensive conducting water project without dam which resolves 24 irrigation regions of beiyin using water along beiyin 黑龙江省北部引嫩工程位于黑龙江省西部，地处嫩江中游左岸的松嫩平原腹地，地理位置在东经126度128度，北纬46度48度之间。该工程以满足大庆石油和化工生活用水为主，同时解决沿途24个分灌渠用水的综合性大型无坝引水工程。
