SU371391A1 - COMPENSATOR - Google Patents

Description

This invention relates to compensating devices installed in both semi-automatic and hydraulic systems. From the known butt satellites, including a cylindrical housing with end stops, obx; a winding connecting element, for example a bellows, mounted between the ends of pipes with annular projections. The purpose of the invention is to compensate for tensile axial forces caused by an increase in pressure in the pipe. It is achieved by the fact that between the outer surface of each pipe and the casing there are formed communicating with the cavity of the pipeline, Measures. The inner walls of these chambers are formed by the protrusions of the pipes, and the outer walls are formed by the end abutments of the casing, and the walls of the chambers are made with seals. FIG. 1 shows a compensator for pipes connected by a bellows; in fig. 2 - telescopically combined compensator for pipes. The K-compensator includes a cylindrical casing 1 with end stops 2. The casing encloses the connecting element, which can be made in the form of a bellows 3 (see Fig. 1) or a telescopic connection 4 (see Fig. 2). At the ends of the pipes there are annular protrusions 5, sealed by rings 6 relative to the inner surface of the casing. The casing is sealed with a ring 7 relative to the outer surface of the pipe. The areas of the casing and the outer surfaces of pipes with annular projections form annular chambers A of variable capacity. The annular chambers communicate with the internal cavity of the pipe through the opening a. The casing is made up of two sections connected by a hinge connection 5 (see Fig. 1) or a rigid connection 9 (see Fig. 2). The hinge connection allows the selection of angular displacements in the compensator. The pressure O from the pipe is not excreted into the chambers, creating a force on the inner end surfaces of the casing and the projections of the pipe, equal to the force P coming from the compensating device. The condition of equilibrium of forces is the equality: pF, P, where A / O is the pressure in the pipe, F is the AREA of the end surface of the chamber, is - (5Вн-4ар) where Лвн is the inner diameter of the casing, ufnap is the outer diameter of the pipe, Р is the force coming from the compensator.

For power circuit bellows compensator

I (, p + Rapf. S) - / C- / g,

for the power circuit of the telescopic compensator

P p (F ,, -} - Fy).

where FTP is the cross-sectional area of the pipe, REF.C is the effective area of the bellows, F-y is the area of the end surface of the sealing element, K is the stiffness coefficient of the bellows, h is the stroke of the bellows.

For a more accurate calculation, it is necessary to take into account the cross-sectional area of the pipe wall and the permissible deviation in the manufacture of parts.

Subject invention

KlemSator, comprising a cylindrical housing with end stops, enveloping the connecting element, such as bellows, mounted between the ends of pipes with annular projections, characterized in that, in order to compensate for tensile axial forces caused by an increase in pressure in the pipe, between the outer surface of each pipe and the casing is formed of chambers communicating with the cavity of the pipeline, the inner walls of which are formed by the protrusions of the pipes, and the outer walls - by the end stops of the casing, and the walls of the chambers are made with seals .