SU1247607A1 - Rig for testing flexible pipes and hoses - Google Patents

Description

The invention relates to testing devices and can be used to test flexible pipes and hoses under combined loads.

The purpose of the invention is to expand the range of tests by the combined loading of flexible pipes and hoses located on the drum.

FIG. 1 shows a stand, general view; in fig. 2 shows a section A-A in FIG. 1 in FIG. 3 shows a section BB in FIG. one; in fig. 4 shows a section B-B in FIG. one; in fig. 5 is a section of YYD in FIG. one.

The stand consists of a base 1 (Fig. 1), on which the head 2 is mounted for fixing with a thread the fixed end of the hose 3, connected to any source of pressure (not indicated). On the other side of the base 1, an expansion cylinder A is mounted along the axis of the head 2, with the stem 5 of which contacts (Fig. A) the end cap 6 screwed on the second end of the hose 3. On the axis 7 of the bracket 8 (Fig. 3) rigidly connected with the base 1, a rotary sector 9 is installed, the cylindrical surface of which has the ability to contact the outer surface of the hose 3.

FIG. Figure 1 shows a hose 3 mounted at a rigidly free end to a turning sector 9 for testing for a constrained bending moment. The hose 3 at the same time lies on the cylindrical surface of the rotary sector 9.

The rotary sector 9 has two coaxial pulleys 10 (FIG. 2), rigidly hardened 1x on sector 9 on both sides of the hose 3, Pulleys 10 using

ten

15

247607. 2

cable II (Fig. 4) is connected to the drum 12, having a tip 13 with a through hole for contact with the plug 14 of the rod of the hydraulic cylinder 4 when the hose 3 is tested for bending. The rotary sector 9 also has a rigidly mounted sleeve 15 (FIG. 5) with a fork 16 which is rotatably and reciprocatingly mounted therein.

Stents works as follows. A flexible pipe or hose 3 with threaded ends is wound with one end into the head 2 and screwed. on the other end of the hose 3 tip-plug. 6 is inserted into the fork 14 of the expansion cylinder rod .4 and fixed.

The test with internal pressure 20 is carried out by supplying the working agent to the internal cavity of the hose 3 (the source of pressure is not indicated). The stretching is carried out using a stretching hydraulic cylinder 4 having an autonomous power source (not shown) with a predetermined force.

When testing the bending hose 3, the hydraulic cylinder 4 of stretching with the help of the tip 13, the drum 12 and 30 of the cables 11 rotates the sector 9, in the sleeve 15 of which an arm 16 is installed, connected to the end cap 6 of the hose 3. The hose 3 stretches by bending it 35 on the disciplining cylindrical surface of sector 9. The force of the hydraulic cylinder 4 of the tension is controlled, for example, by a pressure gauge of the supply line, calibrated in units of force 40 (not shown). At the same time you can

apply pressure to the internal tightness of the hose 3.

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Editor A. Dolinich

Compiled by A. Spesarev Tehred | I. Gaidosh.

Order 4105/35 Circulation 880, Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Proofreader A.Zimokosov

Claims (2)

1. A STAND FOR TESTS OF FLEXIBLE PIPES AND HOSES, comprising a base with a rigidly fixed head connected to a pressure source, and a tensile hydraulic cylinder with a stem fork, characterized in that, in order to expand the test range by providing the possibility of combined loading of flexible pipes and hoses located on the drum, the base is equipped with a sector and a sleeve, inside which there is an emphasis with the possibility of reciprocating and rotational movement relative to it, and a connecting link, interactions Enikeev fork rod stretching cylinder, said sleeve fixedly attached to the sector, which is pivotally mounted relative to the base. 2. Stand pop. 1, with the fact that the connecting link is made in the form of a cable system with a drum and a tip. S and 1247607 A1 1 · 1247607