CS239568B1 - Device for testing tightness of pipe joints, especially larger diameters - Google Patents

Abstract

The device consists of two flexible pressure sealing rings connected by a pressure medium distribution with its source and placed in separate circular guides connected by telescopic spacers with the inner frame, while the flexible pressure sealing rings form a single unit with a closed elastic band lying between them and the source of the liquid pressure medium is connected via a valve distribution both to both sealing rings and to the outlet of the liquid pressure medium supply to the test space lying between them and the outer side of the closed elastic band. The invention relates to a device intended for testing the tightness of pipe joints, or other parts that can be penetrated during the construction of engineering networks, or. production of the parts themselves.

Description

239568 3 4

BACKGROUND OF THE INVENTION The present invention relates to a device for testing the tightness of pipe joints, in particular of larger diameters in the construction of engineering networks.

Up to now, known devices for testing the connection of hollow parts, for example iron tubes, work either to principle-seal the respective section of the duct and to fill it with water, while the decrease in time is monitored or consist of a dedicated device made of double steel annular according to the profile of the parts to be tested, provided with a sealing rubber, which is pneumatic expanded, pressed onto the surface of the parts, and the resulting space is filled with pumping of water to the desired pressure while performing a visual tightness check from the outside of the parts.

A disadvantage of the first method is that the equipment is labor intensive in testing and requires a large amount of water. The single-purpose device known so far has a robust construction, so that it requires a separate chassis for the sealing ring as well as a water container, requiring both a hydraulic and pneumatic power source and a visual inspection of the test from the outside of the joined parts. Its applicability is limited to cylindrical parts with minimal dimensional tolerances.

The above mentioned drawbacks are alleviated by the device according to the invention, which consists of two elastic pressure sealing rings formed with a closed elastic band lying between them and each of the two detachable circular guides being connected by radial telescopic spacers with an internal rigid frame, wherein the source of the liquid pressure medium is connected via the valve manifold to both the resilient pressurizing tires and the outlet of the liquid pressurized medium to the test space lying between them and the outer side of the closed elastic band.

In particular, the advantages of the device according to the invention are that it is designed for universal use, i.e. of a general shape, to which only rectifiable guides are designed. A further improvement is that a special elastic waistband with two resilient hoops allows a fast and efficient closure of the test area, with separate cavity guides and their primary and secondary loops allowing to bridge the large dimensional tolerances of the connected parts. . Due to Jahka's construction, handling, including relocation to special bogies, is considerably simplified and accelerated. A small amount of the test medium is also advantageous, namely that the pressure energy source is uniform, either hydraulic or pneumatic. Monitoring the pressure drop on the pressure gauge visually inspects the tightness of the connected hollow parts.

In the accompanying drawing, an example is shown of an embodiment of a device for testing the connection of concrete pipes with a hydraulic energy source, where in Figure 1 there is a cross section and in Figure 2 a corresponding hydraulic scheme.

The closed elastic waistband 1 is provided with two resilient pressure sealing lips 2 guided in two separable circular guides 3 of aluminum alloy which are connected by radial telescopic spacers 4 with an inner rigid ring S of circular shape.

The source of pressure energy is a manual hydraulic pump 6 with a plastic container 7. The device includes a manometer 8, terminals 9, a hose 10, a venting valve 11, a main valve 12, a valve 13, a filling valve 14, a hydraulic cross 15, They are collectively referred to as valve manifold 16.

To test the tightness of the gusset joints, the elastic band is pulled through the primary telescopic spacers and the secondary is pressurized by water into the two elastic pressure sealing rims. Water is then sucked into the test area formed and the pressure drop is controlled by a manometer, while the water is returned to the reservoir.

The device can be used not only to test the tightness of the connections of the hollow pipes, but also the collectors, directly on the traps, or even in the production parts.

Claims (1)

SUBJECT Apparatus for testing the tightness of pipe joints, of smallest diameters, comprising two flexible pressure sealing rings connected by a pressure medium distribution to its source and located in separate circular guides, characterized in that the two flexible pressure sealing rings (2) form a unit with closed elastic a strip (1) between them and each of the two detachable circular guides (3) OF THE INVENTION is connected by radial telescopic spacers (4) to an inner rigid frame (5j) of circular shape, wherein the source of liquid pressure medium (6) is connected via both valve manifold (16) to both flexible pressure sealing rings (2j) and liquid outlet a pressure medium into the test space lying therebetween and the outside of the closed elastic strip (11j).