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Momentum flowmeter and measuring method thereof

A measurement method and flowmeter technology, applied in the direction of volume/mass flow generated by mechanical effects, fluid flow detected by measuring pressure difference, etc., can solve the problem of high price

Inactive Publication Date: 2005-09-07
江苏省水利科学研究所
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] To sum up, the disadvantages of the existing water measuring equipment are: the equipment is high-end instruments and meters, and the price is relatively high, which cannot be afforded by ordinary small and medium-sized agricultural irrigation channels.

Method used

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  • Momentum flowmeter and measuring method thereof
  • Momentum flowmeter and measuring method thereof
  • Momentum flowmeter and measuring method thereof

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Embodiment Construction

[0037] A momentum flowmeter according to the present invention includes a water barrier 1 , a pressure sensor 2 and a secondary instrument 3 . The shape of the water barrier 1 is rectangular, the height is H, and the width is B. A group of four water barrier bars 4 are arranged on the water barrier 1, and the width of each bar is B. 1 The material of the fence 1 is metal, and the fence 1 is fixed in the channel. Two pressure sensors 2 are respectively arranged on the top and the bottom of the water barrier bar 4, and the pressure sensors 2 can also be four, which are respectively arranged on the four corners of the water barrier 1; the pressure sensor 2 is a general pressure sensor with The remote transmission interfaces are all connected to the secondary instrument 3 . The secondary instrument 3 is a device for receiving, processing, storing and outputting. It receives the information from the pressure sensor 2, calculates the water flow velocity and depth in the channel acc...

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Abstract

The invention discloses a momentum-type flowmeter and a measuring method of it, which comprises a water retaining barrier, a pressure sensing device and a secondary instrument, a group of water retaining grid is on the water retaining barrier which can be set on the channel, the pressure sensing devices are set on the upper and lower of the water retaining barrier individually and both are connected with the secondary instrument which can receive, process, store and output the date. When measuring, fix the momentum-type flowmeter on the channel vertically and connect the pressure sensing device with the secondary instrument fast, then get the information from the secondary instrument.

Description

1. Technical field [0001] The invention relates to a water measuring device and method used in farmland irrigation, in particular to a momentum flowmeter and a measuring method thereof. 2. Background technology [0002] Water measurement has been accompanied by the development of hydraulics for more than 100 years. Classic water measurement equipment such as Venturi tubes and Parshall flumes are still the main means of water measurement in laboratories. With the need for irrigation water, not only these laboratory water measuring facilities are used to measure water in channels, but also many new methods of measuring water have been developed. In a nutshell, water measuring facilities in irrigation areas can be divided into three categories: water measuring by hydraulic structures, water measuring by special water measuring equipment and non-contact water measuring. [0003] The use of hydraulic structures to measure water is to calculate the flow and water volume of the st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/34
Inventor 吴玉柏祁朝标张华陈凤
Owner 江苏省水利科学研究所
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