SU1626036A1 - Valving device - Google Patents

Abstract

The invention relates to pipe fittings and can be used in the chemical and petroleum refining industry, in mechanical engineering, as well as in powder fire extinguishing installations. The purpose of the invention is to increase the reliability of the device, which is provided by creating additional clamping force when using the pressure of the medium on the end walls of the shells. To do this, in the locking device, the pinch elastic element placed in the housing perpendicular to the elastic hose 2 is made in the form of cylindrical shells 4 with rigid end walls 5. The cylindrical shells are located on opposite sides of the hose and are matched with each other and with the body. There is a gap between the end walls 5 and the housing. Zil.

Description

FIG. 2

The invention relates to pipe fittings and can be used in the chemical and petroleum refining industry, in mechanical engineering, as well as in powder fire extinguishing installations.

The aim of the invention is to improve the reliability of the device.

FIG. 1 shows the device, a general view of the section; figure 2 - section aa in figure 1; Fig. 3 shows an embodiment of a locking device with therm cylindrical shells.

The locking device includes a housing 1 in which a flow-through elastic hose 2 is installed, fixed with ends in the connecting flanges 3 of housing 1. Perpendicular to the elastic hose in the housing there is an elastic pinch element made in the form of cylindrical shells 4 with rigid end walls 5. The shells 4 are located on opposite sides of the hose and are interconnected along the generators, and there is a gap 6 between their ends and the body,

In the housing opposite the end walls 5, covers 7 are installed with fittings 8 used to connect the control pressure line.

The housing cavity is connected to the atmosphere with openings 9.

The device works as follows.

In the absence of input and control pressures, the flow hose 2 and the elastic shells 4 are in an arbitrary position due to the ratio of their stiffness. When the inlet pressure is applied to the hose 2, its wall assumes a cylindrical shape, and the shells 4 are deformed, taking an arbitrary unstressed position in the housing.

To shut off the locking device, a control pressure is supplied to the shells 4 through fittings 8. Under the action of the pressure, the shells are deformed in the axial and radial directions, striving to take a regular cylindrical shape, while pinching the flow hose 2.

The deformation of the hose in two directions allows an increase in the pinch force due to the use of medium pressure on the end walls of the shells.

Claims (1)

Invention Formula A locking device containing an elastic hose placed in the housing and a flexible elastic element positioned perpendicular to it, characterized in that, in order to increase reliability in operation, the pinch element is made in the form of cylindrical shells with rigid end walls located on opposite sides of the hose with a gap between the end walls and the housing and adjoining each other along the generators. four 2 1 S®ЈG, BREAK: C A fipo., 7h. tt. . ffv T. CHU  N yy -v -.-; - -yu; yy., T T77Tf Bbl V -. L. h h h LU 1 -S (t 1,, 0 / Fig.Z