CN104916049A - Novel pumped water measuring system for motor-pumped wells - Google Patents

Abstract

The invention discloses a novel pumped water measuring system for motor-pumped wells. The novel pumped water measuring system comprises a computer provided with an agricultural water management sub-system (1), a computer provided with a grassroots water selling sub-system (2), motor-pumped well water-taking monitoring terminals (3) provided with water and electricity conversion coefficient correction sub-systems (8), water pumps (4), cables (5), irrigation pipe networks (6), irrigation emitters (7), water level sensors (9) and flow sensors (10). The water pumps (4) are located in the groundwater wells and connected with the irrigation pipe networks (6), and then the water outlet ends of the irrigation pipe networks (6) are each connected with a plurality of irrigation emitters (7). The water pumps (4) are further connected with the motor-pumped well water-taking monitoring terminals (3) through the cables (5). The water level sensors (9) are located in the groundwater wells. The flow sensors (10) are arranged on the irrigation pipe networks (6). The system is suitable for well irrigation areas using groundwater as an irrigation water source and has the advantages of being resistant to frost heaving, convenient to maintain, low in equipment input and maintenance cost and the like; moreover, the measuring accuracy of the motor-pumped wells in water pumping can be remarkably improved. Due to the research and development of the system, the key technical problems existing in effective measurement of domestic agricultural motor-pumped wells are solved, and the management level of agricultural water in China can be remarkably improved.

Description

A kind of motor-pumped well water metering system

Technical field

The present invention relates to hydraulic engineering field, specifically a kind of motor-pumped well water metering system.

Background technology

Underground water source accounts for China for 19% of water inventory, and account for 30% of Water Consumption in Agriculture, agricultural water effectively measures the raising concerning agricultural water overall control and irrigation water using efficiency.Farmland production environment day and night temperature is large, facilities protection condition is poor, and some areas underground water sand factor is higher, and the dismounting of motor-pumped well facility, maintenance are relatively more frequent, and the disposable input of agriculture motor-pumped well metering facility and later maintenance cost require lower.Conventional mechanical formula water meter frost resistance is poor, and during underground water height sand factor, damage in impeller problem causes error in dipping outstanding problem; The disposable input of the flow sensor such as ultrasonic sensor, turbine sensor is higher, and later maintenance cost is high, is not suitable for the environment for use of frequent dismounting.Therefore, in the urgent need to developing the agricultural water metering system that a kind of disposable input is not high, operation maintenance is easy, maintenance cost is cheap, the water power Commutation Law being converted the water yield by metering electricity is a kind of economically viable method.

At present, water power Commutation Law mainly takes fixed coefficient method, and fixed coefficient method can not according to hydrogeological condition real-time update, and conversion precision is lower.Water power conversion relation, mainly by underground water watery, bury of groundwater, impact with hydrogeological parameters such as electric process, improves water power conversion precision and becomes one of technological difficulties of motor-pumped well metering.

Summary of the invention

The defect that the object of the invention is to exist for prior art proposes a kind of motor-pumped well water metering system.

A kind of motor-pumped well water metering of the present invention system, comprise agricultural water ADMINISTRATION SUBSYSTEM 1 is housed computing machine, basic unit is housed sells the computing machine of water subsystem 2, motor-pumped well water intaking monitor terminal 3, water pump 4, cable 5, irrigation pipe network 6, douche 7, level sensor 9 and the flow sensor 10 of water power conversion factor syndrome system 8 be housed; Described water pump 4 is positioned at underground water well and is connected with irrigation pipe network 6, and the water side of irrigation pipe network 6 is connected with multiple douche 7 then; Described water pump 4 is also connected by cable 5 and motor-pumped well monitor terminal 3 of fetching water; Described level sensor 9 is positioned at underground water well, and flow sensor 10 is arranged on irrigation pipe network 6.

Described agricultural water ADMINISTRATION SUBSYSTEM 1 Support agriculture water real time data acquisition, statistics and analysis, control for peasant household's field water total amount accounting, peasant household's water total amount, agricultural water ADMINISTRATION SUBSYSTEM 1 embeds water power conversion factor model, and described water power conversion factor model is according to water intaking stage, power consumption, water level, hydrogeological parameter calculation water power conversion factor.

Described water power conversion factor model, comprises following formula:

$k_i=\frac{q_{T+it}-q_{T+(i-1)t}}{e_{T+it}-e_{T+(i-1)t}}$

$k_n=\underset{i=1}{\overset{n}{\Σ}}{k}_i/n$

If k _i> (α+1) × k _n

As i≤n-2 $k_i=\frac{k_{i+1}+k_{i+2}}{2}$

Work as i=n-1 $k_i=\frac{k_{n-2}+k_n}{2}$

Work as i=n $k_i=\frac{k_{n-2}+k_{n-1}}{2}$

Recalculate $k_n=\underset{i=1}{\overset{n}{\Σ}}{k}_i/n$

In formula, k _ifor T+ (i-1) t to T+it moment water power conversion factor, k _nfor T to T+nt moment water power conversion factor mean value, q _t+it, e _t+itfor T+it moment motor-pumped well water meter, ammeter reading, q _t, e _tfor T moment motor-pumped well water meter, ammeter reading, α is concussion coefficient.

Described basic unit sell water subsystem 2 support local authorize open card, sell water, payment valuates, for information inquiry of fetching water, statistical study and with agricultural water ADMINISTRATION SUBSYSTEM 1 data syn-chronization.

Described motor-pumped well water intaking monitor terminal 3 supports IC-card to swipe the card keying, for the real time data acquisition of the water yield, electricity, water level, data remote transmission and the long-range keying of motor-pumped well.

Described level sensor 9 and flow sensor 10 are parameters of water power conversion factor mode input, according to water power conversion factor real-time calibration model, real-time calculating water power conversion factor, be sent to agricultural water ADMINISTRATION SUBSYSTEM 1, agricultural water ADMINISTRATION SUBSYSTEM 1 calculates all peasant households water consumption according to the motor-pumped well power consumption of monitoring, be sent to basic unit and sell water subsystem 2, as the foundation that water total amount controls.

The present invention is achieved in that agricultural producer sells water subsystem power purchase from basic unit or purchases water, water pump is started by the IC-card mode of swiping the card behind field, motor-pumped well water intaking monitor terminal starts to measure motor-pumped well power consumption process, and by GPRS communication module to agricultural water ADMINISTRATION SUBSYSTEM Real-time Feedback electric process, electricity is converted to the water yield by water power conversion factor model by agricultural water ADMINISTRATION SUBSYSTEM, beam back and sell water subsystem, as judging whether agricultural water overfulfils the quota and sell the foundation of water inventory control.Due to water power conversion factor and underground water watery, bury of groundwater, relevant by key elements such as electric process, according to the certain proportion auxiliary construction water power conversion factor syndrome system of well-irrigated area's motor-pumped well sum, realize the real-time dynamic correcting of agricultural water ADMINISTRATION SUBSYSTEM water power conversion factor, agricultural water measuring accuracy can be significantly improved.

The beneficial effect of motor-pumped well water metering system of the present invention is: this system is suitable for the well-irrigated area using underground water as iirigation water source, compared with traditional mechanical water meter, has frost heaving resistant, is convenient to the advantages such as maintenance, equipment investment and maintenance cost are low; Compared with converting system with the water power of employing fixed coefficient method, motor-pumped well water metering precision can be significantly improved.The research and development of this system solve the gordian technique difficult problem that domestic agriculture motor-pumped well effectively measures, and can significantly improve China's agricultural water management level.

Instant invention overcomes traditional mechanical type water meter measurement frost heaving resistant ability poor, and the metering outfit such as ultrasonic sensor, turbine sensor drops into, and maintenance cost is high, running environment requires high problem, by setting up water power conversion factor syndrome system, can dynamic conditioning water power conversion factor in real time, improve water metering precision, effectively realize agricultural water metering, overall control and quota management, this device has good application prospect.

Accompanying drawing explanation

Fig. 1 is a kind of schematic diagram of motor-pumped well water metering system.

In figure, 1 is agricultural water ADMINISTRATION SUBSYSTEM, and 2 sell water subsystem for basic unit, and 3 is motor-pumped well water intaking monitor terminal, and 4 is water pump, and 5 is cable, and 6 is irrigation pipe network, and 7 is douche, and 8 is water power conversion factor syndrome system, and 9 is level sensor, and 10 is flow sensor.

Embodiment

When the present invention specifically implements, comprise system and operational management two parts content.

Described system is the condition precedent improving water power conversion motor-pumped well water metering precision, realize water quota management and overall control.A kind of motor-pumped well water metering system key distinction as herein described is in the employing electricity conversion water yield, and compared with conventional metering method, frost resistance is good, investment maintenance cost is low, easy construction.The structure of described a kind of motor-pumped well water metering system as shown in Figure 1.Agricultural water ADMINISTRATION SUBSYSTEM 1 Support agriculture use water real time data acquisition, statistics and analysis, there is the functions such as peasant household's field water total amount accounting, peasant household's water total amount control, system embedment water power conversion factor model, this model calculates water power conversion factor according to water intaking stage, power consumption, water level, hydrogeological parameter etc.; Basic unit sell water subsystem 2 can support local authorize open card, sell water, payment valuation, the information inquiry that can realize fetching water, function of statistic analysis and with the function such as agricultural water ADMINISTRATION SUBSYSTEM data syn-chronization; Motor-pumped well water intaking monitor terminal 3 has IC-card and to swipe the card keying function, can realize the long-range keyings of real time data acquisition, data remote transmission and motor-pumped well such as the water yield, electricity, water level; Water pump 4 is mainly used in extracting underground water; Irrigation pipe network 6 is mainly used in douche conveying underground water; Douche 7 is mainly used in field pipe-net; Water power conversion factor syndrome system 8 is made up of motor-pumped well water intaking monitor terminal 3, level sensor 9, flow sensor 10, level sensor 9 and flow sensor 10 are important parameters of water power conversion factor mode input, according to the water power conversion factor real-time calibration model set up by key elements such as electricity, water level, flows, real-time calculating water power conversion factor, be sent to agricultural water ADMINISTRATION SUBSYSTEM 1, system 1 calculates all peasant households water consumption according to the motor-pumped well power consumption of monitoring, be sent to basic unit and sell water subsystem 2, as the foundation that water total amount controls.

Described operational management is mainly plant maintenance work.For safeguards system is normal, safeguard motor-pumped well water intaking monitor terminal 3 key equipment such as grade and system in time.There is the monitoring equipment such as level sensor 9, flow sensor 10 should regular calibration in water power conversion factor syndrome system 8, ensure the accuracy of Monitoring Data.

Claims (6)

1. a motor-pumped well water metering system, is characterized in that: comprise agricultural water ADMINISTRATION SUBSYSTEM (1) is housed computing machine, basic unit be housed sell the computing machine of water subsystem (2), motor-pumped well water intaking monitor terminal (3) that water power conversion factor syndrome system (8) is housed, water pump (4), cable (5), irrigation pipe network (6), douche (7), level sensor (9) and flow sensor (10); Described water pump (4) is positioned at underground water well and is connected with irrigation pipe network (6), and the water side of irrigation pipe network (6) is connected with multiple douche (7) then; Described water pump (4) is also connected by cable (5) and motor-pumped well monitor terminal (3) of fetching water; Described level sensor (9) is positioned at underground water well, and flow sensor (10) is arranged on irrigation pipe network (6).

2. motor-pumped well water metering system as claimed in claim 1, it is characterized in that: described agricultural water ADMINISTRATION SUBSYSTEM (1) Support agriculture water real time data acquisition, statistics and analysis, control for peasant household's field water total amount accounting, peasant household's water total amount, agricultural water ADMINISTRATION SUBSYSTEM (1) embeds water power conversion factor model, and described water power conversion factor model is according to water intaking stage, power consumption, water level, hydrogeological parameter calculation water power conversion factor.

3. motor-pumped well water metering system as claimed in claim 2, is characterized in that: described water power conversion factor model, comprises following formula

$k_i=\frac{q_{T+it}-q_{T+(i-1)t}}{e_{T+it}-e_{T+(i-1)t}}$

$k_n=\underset{i=1}{\overset{n}{\Σ}}{k}_i/n$

If k _i> (α+1) × k _n

As i≤n-2 $k_i=\frac{k_{i+1}+k_{i+2}}{2}$

Work as i=n-1 $k_i=\frac{k_{n-2}+k_n}{2}$

Work as i=n $k_i=\frac{k_{n-2}+k_{n-1}}{2}$

Recalculate $k_n=\underset{i=1}{\overset{n}{\Σ}}{k}_i/n$

In formula, k _ifor T+ (i-1) t to T+it moment water power conversion factor, k _nfor T to T+nt moment water power conversion factor mean value, q _t+it, e _t+itfor T+it moment motor-pumped well water meter, ammeter reading, q _t, e _tfor T moment motor-pumped well water meter, ammeter reading, α is concussion coefficient.

4. motor-pumped well water metering system as claimed in claim 1, it is characterized in that: described basic unit sell water subsystem (2) support local authorize open card, sell water, payment valuates, for information inquiry of fetching water, statistical study and with agricultural water ADMINISTRATION SUBSYSTEM (1) data syn-chronization.

5. motor-pumped well water metering system as claimed in claim 1, it is characterized in that: described motor-pumped well water intaking monitor terminal (3) supports IC-card to swipe the card keying, for the real time data acquisition of the water yield, electricity, water level, data remote transmission and the long-range keying of motor-pumped well.

6. motor-pumped well water metering system as claimed in claim 1, it is characterized in that: described level sensor (9) and flow sensor (10) are the parameters of water power conversion factor mode input, according to water power conversion factor real-time calibration model, real-time calculating water power conversion factor, be sent to agricultural water ADMINISTRATION SUBSYSTEM (1), agricultural water ADMINISTRATION SUBSYSTEM (1) calculates all peasant households water consumption according to the motor-pumped well power consumption of monitoring, be sent to basic unit and sell water subsystem (2), as the foundation that water total amount controls.