RU1840764C - Gas compensator - Google Patents

Abstract

FIELD: mechanics.

SUBSTANCE: proposed device represents a gas-filled vessel and element sensitive to hydrostatic pressure. Aforesaid vessel consists of several vessels filled wits gas at different pressure and communicating with the compensation space via valves connected with the aforesaid element sensitive to hydrostatic pressure. Note that the above valves serve to keep up, in every sub range, only that hydrostatic pressure of communication with the compensation space that either equals or exceeds the medium hydrostatic pressure.

EFFECT: smaller sizes.

1 dwg

Description

The invention relates to the field of deep-sea instruments, in particular to deep-sea sonar transducers, where closed gas compensation is used to automatically maintain back pressure at various depths of immersion.

A gas compensator of a deep-sea transducer is known in the form of an elastic tank, in which when immersed, gas from the elastic tank under the influence of hydrostatic pressure is displaced into the compensated cavity of the transducer, creating back pressure. A disadvantage of the known compensator is the large required dimensions to provide back pressure at great depths, because the ratio must be respected

where: P _max - limiting hydrostatic pressure;

P _o - initial pressure in the compensator;

V _o - the volume of the compensator at a pressure P _o ;

V _comp.volume - compensated volume of the device.

The aim of the present invention is to provide a gas compensator closed type with significantly reduced dimensions, compared with the known.

This goal is achieved in that the compensator is made in the form of several vessels into which gas is pumped with different initial pressures P ₁ , P ₂ , P ₃ , ... P _n , and P ₁ <P ₂ <P ₃ ... <P _n .

The invention is illustrated in the drawing, which shows as an example a compensator with three pressure levels.

In the drawing:

1, 2, 3 - vessels of the compensator,

4 - vessel body,

5 - perforated part of the vessel body,

6 - element sensitive to changes in hydrostatic pressure (membrane),

7, 8, 9, 10 - valves for connecting the internal volume of vessels with a compensated cavity,

11 - pipeline connecting the vessels with the compensated cavity of the Converter,

12 - compensated cavity.

The vessels of the compensator 1, 2, 3 are equipped with a housing 4 having a perforated part 5. On the inside of the perforated part of the housing there is an element that is sensitive to hydrostatic pressure 6, for example, a “sluggish” membrane.

The vessels are connected by valves 7, 8, 9, 10, through a pipe 11 with a compensated cavity 12.

When the hydrostatic pressure of the medium increases, the gas from the vessel 1 (see drawing) with a pressure P ₁ through the normally open valve 7 enters through the pipe 11 into the compensated cavity 12. When the gas of the vessel 1 is consumed, the membrane 6 of this vessel in its lowest position, acting on the valve will open the normally closed valve 9, connecting the vessel 2 with the pressure P ₂ with the compensated cavity 12. The membrane 6 of the vessel 2, moving downward, will allow the normally open valve 7 to be closed, i.e. disconnect vessel 1 from the compensated cavity and displace gas from the vessel 2 into the compensated cavity through the normally open valve 8 and the normally closed valve 9. When the gas of vessel 2 is used up, the membrane of this vessel in the extreme position will open the normally closed valve 10. Thus, the connection will be made with compensated cavity of the vessel 3 with gas pressure P ₃ .

The membrane of the vessel 3, moving down and acting on the valve 8, will disconnect the vessel 2 from the compensated cavity. When the hydrostatic pressure of the medium decreases, the vessel 3 will be filled with gas and at a pressure equal to P ₃ it will turn off.

Then vessel 2 is filled with gas, and at a pressure equal to P ₂ , vessel 1 is turned on and vessel 2 is turned off.

If necessary, a system is composed of any number of vessels.

If the entire operating range of hydrostatic pressures is divided into n sub-ranges with pressures according to table 1,

Table number 1 Sub Ranges No. Pressure range one P ₁ -P ₂ 2 P ₂ -P ₃ 3 P ₃ -P ₄ n-1 P _n-1 -P ₁ n P _n -P _max

then for the compensator, consisting of n equal vessels with volumes V ₁ = V ₂ = V ₃ = ... = V _n

total compensator volume

V _comp = V ₁ + V ₂ + V ₃ + ... V _n

determined by formulas 2 and 3

where: V _comp - the total volume of the compensator,

V _ol - (compensated volume),

n is the number of vessels

P _max - maximum working pressure

P ₁ - initial pressure in the compensated cavity.

Table 2 shows the comparative values of the compensator volume of the proposed and existing designs at a constant temperature.

Table number 2 Volume of compensated cavity of converters in l Operating pressure in kgf / cm ² Compensator volume in l Existing design The proposed design, consisting of 3 vessels I 0-40 40 6 “ 0-90 90 9 “ 0-150 150 eleven “ 0-300 300 fifteen

Claims (1)

A gas compensator containing a gas-filled container and an element sensitive to hydrostatic pressure, characterized in that, in order to reduce the overall dimensions of the compensator while maintaining its main parameters, the container is made of several vessels filled with different pressure, connected to the compensated cavity through a pipeline with valves, associated with an element that is sensitive to hydrostatic pressure, and providing in each subrange of hydrostatic pressure compounds with compensated my cavity is only that vessel, the pressure in which is equal to or less than the hydrostatic pressure in the medium.