Device and method for measuring water yield-electric quantity conversion coefficient of irrigation pumping station in plain river network

A plain river network and conversion coefficient technology, applied in the field of farmland water conservancy, can solve the problems of restricting the promotion of accurate metering of agricultural water and long-term operation, and achieve the effect of convenient processing and acquisition, low price and low maintenance cost

Active Publication Date: 2018-02-16
NANTONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This greatly limits the promotion and long-term operation of accurate metering of agricultural water

Method used

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  • Device and method for measuring water yield-electric quantity conversion coefficient of irrigation pumping station in plain river network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A device for measuring the water volume-electricity conversion coefficient of plain river network irrigation pump stations, including a water tank 1 for receiving water pumped by a water pump, a flow measuring tube (standard pipes can be used) 2 arranged behind the water tank, and a flow meter 4 installed in the flow measuring tube In the middle and rear part of the flow tube, an electric valve 3 is set at the end of the flow tube; the distance between the flowmeter and the water inlet tank is at least ten times the diameter of the flow tube, and the distance between the flowmeter and the electric valve is at least five times the diameter of the flow tube; set up a filter and wave elimination in the water tank Functional flat water grid baffle 5 .

[0022] The flow tube is spliced ​​by multi-section pipes. The flat water grid baffles for filtering and wave-absorbing functions have multiple layers, are arranged on the water flow channel, and are directly embedded in the ...

Embodiment 2

[0026] A device for measuring the water volume-electricity conversion coefficient of plain river network irrigation pump stations, including water inlet tank, flow measuring pipe, flow control manual valve (or movable guide vane valve) and water level gauge, and the flow measuring pipe section is spliced ​​by multiple standard pipes Formed, the clamp-on ultrasonic flowmeter is added to the middle and rear of the flow measuring pipe section. For pumping stations with a small installation space for the water inlet tank, according to the actual situation, on the premise of not interfering with the free flow of the pump, by modifying the shape of the channel at the pump outlet, diverting water to a suitable place, or using flexible materials to form the water inlet tank, the inlet The water surface in the water tank is higher than the top of the flow tube, and the higher distance ensures that the flow tube is full and flows out, and a water level gauge is installed. Then level the...

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Abstract

The invention discloses a device and method for measuring a water yield-electric quantity conversion coefficient of an irrigation pumping station in a plain river network. The device comprises a watertank which receives water pumped from a water pool by a water pump; a flow measuring tube is arranged after the water tank; a flowmeter is arranged at the middle half part of the flow measuring tube;and an electric valve is arranged at the tail of the flow measuring tube. The distance between the flowmeter and a water inlet tank is larger than the diameter of the flow measuring tube by at leastten times and the distance between the flowmeter and the electric valve is larger than the diameter of the flow measuring tube by at least five times. A flat water grid baffle for wave absorbing is arranged in the water tank. The device is used conveniently; no agricultural land is occupied; and the flow measuring accuracy is high.

Description

technical field [0001] The invention belongs to the technical field of farmland water conservancy, and relates to a flow measurement device, in particular to a device for measuring the water volume-electricity conversion coefficient of plain river network irrigation pump stations. Background technique [0002] After the agricultural water price reform, in order to ensure the priority of water saving, agricultural water metering is gradually extended to individual water users, and flow metering of irrigation pump stations in irrigation areas is indispensable. Among them, the small irrigation pump stations along the main irrigation canals in plain river network areas have the following water intake characteristics: low head, short length of inlet and outlet pipes, turbulent flow state, and sometimes high sediment content. Affected by these factors, the commonly used electromagnetic flowmeters will produce large measurement errors in practical applications. Practical experienc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M99/00F04D15/00
CPCF04D15/0088G01M99/00
Inventor 崔延松高柱吕先洋曹锡军
Owner NANTONG UNIVERSITY
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