SU415499A1 - - Google Patents

Description

I

The invention relates to a measurement technique and, in particular, can be used to measure the flow of liquids and pulps.

The known variable level flow meters are inconvenient in operation, since when disassembling them to remove solid particles from the bottom of the measuring vessel, the diaphragm must be unscrewed.

In order to increase the reliability and convenience of operation in the proposed flow meter, the diaphragm, freely installed in the rectangular socket of the cone-shaped bottom of the measuring vessel, has the shape of a rectangle, one side of which is smaller than the diagonal of the rectangular opening of the socket.

The drawing shows a diagram of the described flow meter containing a diaphragm with a circular central flow orifice, freely installed in a nest 2 with a rectangular orifice, reinforced in a cone-shaped bottom 3 of the measuring vessel 4, a bubbling receiver 5 of the controlled medium pressure, a bubbling condenser of the bubbling level 6 above the vertical displacement of the bubbling level meter a diaphragm, a pulse tube 7 connected to a pressure gauge 8, an air supply unit 9, a bypass tube 10. A diaphragm 1 has the shape of a rectangle.

one side of which is smaller than the diagonal of the rectangular opening in slot 2.

The flow meter works as follows.

The controlled flow, flowing through the flow opening of the rectangular diaphragm 1, creates a pressure drop on it.

In this case, a certain level is established in vessel 4, which is ultimately measured by a pressure gauge 8. The air pressure in the pulse tube 7 is proportional to the square of the flow rate of the controlled medium and is equal to the sum of the pressure in the bubbling receiver 5 and the differential pressure created by the barrier fluid in the bubbling compensator 6.

In the presence of the vessel of the compensator 6, the connection of the receiver 5 to the vertical wall of the measuring vessel 4 above the flow orifice takes place without disturbing the quadratic dependence on the flow rate in front of the pressure gauge 8.

The presence of a cone-shaped bottom 3 in these conditions greatly simplifies maintenance, eliminates the need for frequent cleaning of the vessel 4 from coarse solids settled to the bottom.

The installation of the diaphragm I produced below

through a rectangular hole in the socket 2.

At the same time it is passed diagonally through

sticks of the nest are turned and lowered onto the nest 2 where it lies without fastening.

Subject invention

A variable level flow meter containing a measuring vessel with a diaphragm installed at its bottom and a level sensor, is

In order to increase reliability and ease of operation, the diaphragm in it, freely installed in the rectangular socket of the cone-shaped bottom of the measuring vessel, has the shape of a rectangle, one of the sides of which is smaller than the diagonal, rectangular hole nests.

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