SU105676A1 - Depth gauge - Google Patents

Description

Pressure gauge gauges of the gauge type are known, with which the height of the fluid level is determined by the change in pressure inside a closed vessel, which is immersed at the bottom of the reservoir containing the liquid and receives its pressure. The varying pressure inside the vessel is measured with a pressure gauge of a known type, which can be installed outside the reservoir and connected to the vessel with an outlet tube.

The peculiarity of the proposed depth gauge, made in the form of a vessel open to the bottom (or to a predetermined depth) of an open vessel bottom, is that for recording the fluid level by changing the volume of air contained inside the vessel, a float moving in the vessel is mechanically connected to the recording pen the mechanism that records the movement of the float in a moving diagram.

The drawing shows schematically the proposed device for measuring the level.

The device consists of a lowered

on the cable into the depth of the drill-well. s, or at the bottom of the reservoir, closed

on top of the pipe 1, inside which the float 3, mechanically connected with the recording device, freely moves along the two guide strings 2. The latter can be performed by the method of intermittent recording, having the form of a dotted line. This method improves the registration accuracy, since there is no friction between the pen and the chart form during interruptions in the recording.

The recording mechanism is also enclosed inside pipe 1; it has the appearance of a drum 4, rotated by means of a clockwork enclosed inside its mechanism. A chart form is fixed on the surface of the drum, on which the changes in the level of the liquid are recorded with a pen 5 mechanically connected with the float 3 and repeating the movements of the latter.

A sprocket 6 is fastened on the axis of the drum; the sprocket 7 slides along the surface of which is connected to the pen 5 through the lever 8. When the sprocket 6 rotates, the end of the lever 7 periodically rises and falls, raising the pen, resulting in a curve in the form of a dashed line.

To measure the level, the entire instrument is lowered into the well to the starting point below the fluid level so that the fluid level inside the instrument reaches the float and raises it to the height hi.

With a further increase in the well level to a height of D N, the float rises to a height of A2 / Zi + YES.

The elevation in the well is calculated in cm by the following formula:

 + 0

1M-L, + J

e: M-constant of the device, taking into account its volume from the moment of the float shift and effective cross-sectional area (determined by calibration),

Hfj value, taking into account the barometric pressure and the depth of immersion at the starting point. It is determined during the measurement by temporarily lowering the piezograph from a certain value, see.

(ЛЯ-ДА) (Ж-А;)

H,

Subject invention

A depth gauge of the manometric type, including a vessel open to the bottom of the reservoir or to a predetermined depth, the bottom of the vessel, the pressure inside, which changes depending on the height of the liquid column and moves the float, characterized in that air inside the vessel, enclosed within the vessel, the float is mechanically connected to the pen of the recording mechanism that records the movements of the float on the moving diagram.