RU18769U1 - DEVICE FOR MEASURING VOLUME FLOW OF A LIQUID IN OPEN CHANNELS AND TAP-FREE PIPELINES - Google Patents

Description

2001110811

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DEVICE FOR MEASURING LIQUID FLOW IN

OPEN KAIALS AND UNKNOWN

PIPELINES

The invention relates to the field of measurement technology, in particular to devices for measuring fluid flow in open channels and non-nanor pipelines. It can be used for this purpose in sewers.

A known wastewater flow meter in a closed sewer system comprising an electro-acoustic transducer mounted above a moving stream on a mounting fixture, connected by a cable to a transducer and a power source. At the same time, it is equipped with a sound guide, in the upper part of which an electro-acoustic transducer is placed inside, and the lower part is located above the hole made in the upper part of the sewer collector, with the possibility of installation in it. (RU IM 17616, class G01F 1/66 2000) 1.

The disadvantage of this device is the increase in the inaccuracy of the flow measurement when short-term or long-term backwater appears in the water conduits due to blockages, which is caused by the absence of continuous flow rate control in the device.

A device is also known for measuring the volumetric flow rate of a liquid in a pressureless channel, comprising a liquid velocity meter, a liquid level meter, a calculator, and an indicator. Moreover, the speed meter is made in the form of an active location sensor, which contains a piezoceramic emitter and a piezoceramic radiation receiver. It is equipped with a knot rigidly connected to its body.

radiation pattern regulation. (RU 2139503, CL GO IF 1/66 1998) 2.

This device is the closest in technical essence and the number of common features with the claimed, which is why it is accepted as the closest analogue.

The disadvantage of this device is that it is impossible to produce a high-precision measurement of wastewater flow in closed sewers.

The problem, on the solution of which the proposed utility model is aimed, is to provide the ability to measure the volumetric flow rate of liquid in open channels and closed pressureless pipelines.

The technical result from the use of the claimed utility model is to increase the accuracy of measuring the volumetric flow rate of liquid in open channels and closed pressureless pipelines in the event of backwater.

The above technical result is achieved due to the fact that in the device for measuring the volumetric flow rate of liquid in open channels and pressureless pipelines containing a liquid velocity meter, liquid level meter, calculator and indicator, according to the proposal, the liquid velocity meter is made in the form of an optical sensor, consisting of a transceiver optical system, a raster analyzer and a photodetector that is connected to a computer, the optical sensor being configured to installations in a moving stream.

Optical sensors for measuring fluid flow rate are known in the measurement technique. However, its use in combination with other essential features specified in the utility model formula for simultaneous determination of the level and velocity of a stream moving in open channels and pressureless

pipelines, allowing a high degree of accuracy to determine the volumetric flow rate of the fluid, the applicants do not know. This allows us to conclude that the claimed technical solution meets the criterion of "novelty and" inventive step.

The utility model is illustrated by drawings, where:

- In FIG. 1 shows a general diagram of a device;

- In FIG. 2 shows a diagram of an optical sensor.

A device for measuring the volumetric flow rate of liquid in open channels and pressure-free pipelines contains a liquid level meter 1, consisting of an electro-acoustic transducer 2 connected by a cable 3 to a transducer 4, which includes a calculator 5 and an indicator 6, a power source 7 and a sound guide 8 installed with using the fastening device 9 on the pressureless pipeline 10. The device also includes a liquid velocity meter in the form of an optical sensor 11, consisting of an optical transceiver Istemi 12, the bit analyzer 13 and the photoreceiving device 14 connected to the calculator 5. In order to measure fluid flow in open channels is provided instead of the fixture arm 9 (Fig. not shown).

The device is mounted on a pressure-free pipe 10 on a mounting device 9 or on an arm (not shown in FIG.) Above an open channel. The liquid velocity meter in the form of an optical sensor 11 is introduced into the fluid stream. After installing the device and turning on the power source 7 from the transducer 4 through the connecting cable 3, electrical pulses are periodically supplied to the electro-acoustic transducer 2, which generates sounding acoustic signals. From the optical sensor 11, a signal is received on the calculator 5, bearing the information about the fluid flow rate. Acoustic signals through the sound guide 8 are directed to the surface of a moving stream, reflected from its surface and

come back to the electro-acoustic transducer 2, which converts them into electrical signals. These signals are fed to the measuring transducer 4, where they are processed taking into account the instantaneous values of the flow velocity, which allows, having automatically processed the result, to calculate the fluid flow rate using known formulas. Information about the flow is displayed on the display of indicator 6.

Using the proposed utility model will allow to measure with high accuracy the flow rate in open sewer channels and closed pressureless pipelines.

Claims (1)

A device for measuring the volumetric flow rate of liquid in open channels and pressureless pipelines, comprising a liquid velocity meter, a liquid level meter, a calculator and an indicator, characterized in that the liquid velocity meter is made in the form of an optical sensor consisting of a transceiver optical system, a raster analyzer and a photodetector device that is connected to the calculator, the optical sensor being configured to be mounted in a moving stream.