RU1800279C - Device for determining volume of granules - Google Patents

Abstract

SUMMARY OF THE INVENTION: a measuring volume of granules is placed in a measuring vessel, the liquid from which has previously been pumped out by the vacuum element into the storage vessel, after which the measuring vessel is sealed, and the liquid is pumped back to fill it and the capillary tube connected with it. The volume of granules is determined by the volume of displaced liquid according to the scale of the tube and capillary, 2 C. p. f-ly. 1 ill.

Description

The invention relates to measuring technique, which improves the accuracy and reliability of measurement.

The purpose of the invention is to improve the accuracy and reliability of measurements.

This goal is achieved in that in a device for determining the volume of granules containing a closed measuring vessel, the lower part of which is made in the form of a funnel with a locking element on the drain pipe, a closed storage vessel with a first valve installed in its upper part and connected to the atmosphere, below of which the storage vessel is connected to the evacuating element, and the lower part of the storage vessel through the second valve is connected to the upper part of the measuring vessel, which is connected through the first three-way second valve to open the filling vessel and connected in parallel to the capillary tube and closed, wherein the upper -part

it is connected to the atmosphere through a third valve, a second three-way valve and a fourth valve are introduced, the evacuation element through a second three-way valve connected to the storage vessel and the upper part of the closed tube, and the upper part of the capillary connected to the atmosphere through the fourth valve.

The goal is also achieved by the fact that the storage vessel is equipped with a scale, and the scale division prices of the closed tube and the storage vessel are referred to as 1:10. and capill r is made replaceable.

A schematic diagram of the device is shown in the drawing.

The device comprises a measuring vessel 1 with a removable part 2 and a crane 3, a filling vessel 4, a three-way valve 5, a replaceable capillary p 6, a tube 7 with a scale and a crane 8 in the upper part, a storage vessel .9 with a scale and a crane 10 in the upper part, evacuation element 11 with reverse

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valve 12 and three-way valve 13

and cranes 14, 15.

The device operates as follows.

The measuring vessel 1, partially filled with a working fluid with open taps 5, 8, 10 and 15, is replenished according to marks A, B and C. After this, the filling vessel 4 is turned off by the valve 5. The valves 8, 10, 14 and 15 are closed, the valve 13 is moved to the position connecting the evacuation element 11 to the accumulation vessel 9. By using the evacuation element 11, a vacuum is created in the accumulation vessel 9, opening the valves 8, 14 and 15, part of the working fluid from the measuring vessel 1 is pumped into the storage vessel 9. The valve 15 is closed. Moreover, the liquid level e of the measuring vessel 1, when disconnected, should be lower than the level of the connector.

After disconnecting the measuring vessel 1, the test body is immersed in its lower honor 2. Parts of the measuring vessel are tightly connected. The valve 15 opens, the valves 8 and 14 are closed. Turning the tap 13 into the position connecting the evacuating element 11 with the tube 7 and creating a vacuum with it, part of the working fluid from the storage vessel 9 is pumped into the tube 7 and capillary 6. In the case when the volume of the measured body exceeds the total volume tube 7 and capillary 6, body volume is determined by the sum of the working fluid in the filling vessel 9, tube 7 and capillary. With small volumes of the test body, its volume is equal to the sum of the volumes of the working fluid in the tube 7 and capillary 6. In this case, the liquid level in the storage vessel 9 is set at the level of mark A, the valve 15 closes.

To simplify the calculations, the liquid levels in the storage vessel, tube 7 and capillary 6 are set by vacuum to integer volume values. After volume determination, by creating a vacuum in the filling vessel 9 with open taps 8, 14, 15, part of the working fluid from the measuring vessel 1 is pumped into the storage vessel 9. The valve 15 is closed. The measuring vessel is disconnected, the test body is removed from its lower part 2, after which the two parts of the measuring vessel are connected. The fluid level according to the previously described scheme is set at marks A, B, C. The device is ready for further work.

Claims (3)

1. A device for determining the volume of granules, comprising a closed measuring vessel, the lower part of which is made in the form of a funnel with a locking element on the drain pipe, a closed storage vessel with it installed. the upper part and in communication with the atmospheric first valve, below which the storage vessel is connected to the evacuating element, and the lower part of the storage vessel through the second valve is connected to the upper part of the measuring vessel, which is connected through the first three-way valve to the open filling vessel and to the parallel connected capillary and a closed tube, the upper part of which is connected to the atmosphere through a third tap, characterized in that, in order to increase accuracy and reliability, a second three-way valve and a fourth valve are introduced into it, the vacuum element being connected through a second three-way valve to the storage vessel and the upper part of the closed tube, and the upper part of the capillary is in communication with the atmosphere through the fourth valve, 2. The device according to claim 1. characterized in that the storage vessel is provided with a scale, wherein the prices for dividing the scales of the closed tube and the storage vessel are referred to as 1:10.  3. The device according to claims 1 and 2. The clause is that the capillary is replaceable.