SU49295A1 - Float to determine the level of liquid - Google Patents

Description

Usually, when the specific gravity of a liquid changes, the depth of the float changes, which distorts the readings of the instruments that determine the level of the liquid according to its position.

The proposed float for determining the level of a liquid provides indications of the level of a liquid, independent of its specific gravity, and, moreover, can simultaneously serve to determine the specific gravity of a liquid.

In FIG. 1 and 2 schematically depict the proposed float in two basic forms of deflation; FIG. 3 and 4, respectively, a side view and a top view of a modified form of the float; FIG. 5 and 6 are the same, but with a device for determining the specific gravity of the fluid.

The proposed float consists of two or more floating bodies 7, 2, 3 (Fig. 1 and 2), the weights and geometrical dimensions of which are such that the depth of their immersion in the same fluid is different. When the specific gravity of the fluid changes, the immersion depths of both floats change, but the ratio of the immersion, for example, of the float / to the immersion of the float 2, remains always constant. If the ratio of the arms of the lever 4 is equal to the constant ratio of the depths of immersion of bodies 7 and 2, then the point A of the lever 4

will always be at a certain distance, a, from the level of the liquid, which remains constant as its specific gravity changes.

Placing at the point A of the lever 4 an arrow indicating the position of the level on a scale, or attaching it to a tag or lever of the transmission mechanism serving to determine the level, we will receive readings that do not depend on the specific weight of the fluid.

The number of floats can be increased as much as you like. Thus, in FIG. 1, a dotted line shows a third float 3 attached to the float 2 by a lever 4 so that two points A and Lo are obtained. with a constant distance from the liquid level. FIG. 2 shows three floats connected by a common lever 4; here point A will also be at a constant distance a from the level of the liquid, if the equality of the relationship between the arms of the lever 4 and the depth of immersion of the floats J, 2 to 3 is observed.

The shape of the floats can also be arbitrarily changed, so that the condition of maintaining the constant ratio of the depth of their immersion in fluids with different specific gravity would be met. This is most easily achieved by making floats in the form of prism cylinders or rings with vertical side walls.

Thus, in FIG. 3 float / made 8 as a hollow ring, and a float 2 3 as a cylinder. The arrows to indicate the level on the scale can be placed either directly at the ends A of the lever 4, or at the ends of the (curved) rod 5 passing through the sliders .7 pivotally connected at the points A by the levers 4, as shown in FIG. 3

The plugs 6 can be used to connect a float to a mechanism that conveys the position of the float on the scale.

The difference in the absolute values of the immersion of the floats 7 and 2 is proportional to the specific gravity of the liquid; therefore, placing on one of the floats the scale, and on the other a pointer (arrow, nonius), we obtain indications of the values of specific seca, degrees Vyo, etc., looking at the scale graduation pattern.

When transferring to the scale by any of the known mechanisms, the scales of the relative movement of floating bodies can be increased. Thus, in FIG. 5, 6, the float 2 is provided with a toothed rack .7 coupled to the bristles 8, on the axis of which is fixed arrow 9, and the axis of gear 8 and arrow 9 rotates in bearing plates rigidly fixed on the float / in the center of the scale 10 on the arc-shaped stand 11.

Thus, the change in the relative position of the floats / and 2 will be transferred to a scale of 10 on a scale equal to the ratio of the length of the arrow 9 to the radius of the initial circle of gear S.

The mechanisms shown in FIG. 3-b, can be combined on the same volume of the differential float and then will be obtained simultaneously indications of the position of the level and the specific gravity of the liquid.

In addition, electrical contacts, including mechanisms that regulate the position of the level (supply valve or pump, drain valve, etc.), or mechanisms that control the density of solutions (steam valve, solvent supply valve, etc.), can apply the proposed differential a float in devices for automatic adjustment of the level and density of the solution.

The described variants of a differential float have one common characteristic feature for them, namely: two or more floating bodies I, 2, 3 movably connected to each other, have different immersion depths in the same fluid so that when the specific gravity of the latter changes the floating bodies move one relative to the other due to the change in the depths of their immersion.

The subject matter of the invention.

Claims (2)

1. A float for determining the level of a liquid, characterized in that it consists of two or more bodies 7, 2, 3, the weights and geometrical dimensions of which are such that the depth of their immersion in the liquid is different, which bodies are attached pivotally to the lever 4 at a distance x from the end A of the latter, proportional to the ratio of the depth of immersion of the said bodies, in order to maintain a constant height of the end A of the lever 4 above the surface of the liquid when its specific weight is changed. 2. In the float of claim 1, the use of a scale located on one of the bodies and on the other of a pointer, according to the indications of which the change in the specific gravity of the fluid is indicated on the scale.