SU945580A1 - Compensator of butt-joint of pipelines - Google Patents

Description

one

The invention relates to mechanical engineering and can be used in pipe connections for various purposes.

A compensator for pipelines is known, comprising flanges, intermediate flanges, sealing elastic elements placed in the grooves of the flanges, while the ends of the adjacent flanges do not touch each other p}.

The disadvantage of the compensator is em-. inability to use at elevated pressures due to the low stiffness of the elastic rings and sealing the joints against pressure.

The closest to the invention to the technical essence is a compensator for pipe fittings, comprising flanges, an elastic element disposed between them and a protective sheath encompassing the elastic element, the elastic element being bonded with the flanges and the protective sheath. Which 2.

A disadvantage of the known compensator is the difficulty of mounting and dismounting the elastic element due to the fact that it is fixed to the flanges and the protective sheath, for example, by means of vulcanization.

The aim of the invention is to simplify the installation and removal of the compensator.

The goal is achieved by the fact that the sheath is made in the form of a con centric mounted compression spring springs, and the elastic element is located between them with a preliminary tension.

The drawing shows the proposed 15 my device.

The technological compensator for the junction of pipelines 1 and 2 contains an elastic element 5 placed between flanges 3 and 4 and a protective sheath.

Claims (2)

The protective sheath is made in the form of concentric springs 6 and 7 of compression, having the shape of a truncated cone or so-called buffer springs, twisted from a tape with overlapping a turn 8 and 9 e in 6 steps of a width less than the width of the tape. The elastic element 5 is enclosed with tension between the springs b and 7, between the flanges 3 and. The springs 6 and 7, depending on the operating conditions (force, temperature environment, etc., 7, can be made of spring steel, bronze or plastic, for example, fluoroplastic. The number of turns is determined by the required force and stroke of the compensator in the longitudinal, radial and the angular direction. The elasticity of the element 5 provides c by choosing a material, such as rubber. If necessary, the elasticity of the element 5 on its inner surface in the middle of the distance between the flanges 3 and 4 can be made into a cavity in which additional conical axial pressure rings for springing the edges of the cavity and the whole element to the flanges 3. Additional rings provide increased tension, thermal stability of the service life of the element 5. The flanges 3 and pipelines are attached to each other, stationary, for example with bolts, a clamp and etc., or movably. The assembled assembly 6-5-7, having a height in the free state exceeding the distance between the flanges 3 and 4., is compressed axially with the help of a tool and inserted into the gap between the flanges, after which fasten and x with each other, for example, bolts, limiting axial compression with bolt-on sleeves. Due to the tension of element 5 in the junction with flanges 3 and 4, tightness is provided at the contact points of these parts. The gaps in the gaps between the overlapping coils of the outer spring 6 are such that they prevent the rubber of the element 5 from being extruded, however, adding the gaps of the other coils allow the pipes 1 and 2 to be hermetically sealed while ensuring the radial and angular displacements of the flanges 3 and i relative to each other. when they are misaligned, nonparallel, wedge. The longitudinal movement of the flanges 3 and unhindered is accomplished by compressing the springs 6 and 7 and the element 5. When the distance between the flanges 3 and 4 is reduced, the springs 6 and 7 are compressed, and the strip winding step decreases the ribbon edge in the body of the element 5 , reducing the volume occupied by it before and thereby increasing the rubber tension and tightness at the joint with flanges 3 and. Structurally, selecting diameters, overlapping of coils, spring pitch, liner thickness and inter-root spacing provide such a tension of element 5, which is sufficient for tightness and does not exceed a certain limit, over which rubber can flow into the gaps between coils of springs, especially under conditions high temperatures. Node 6-5-7 set so that the direction of winding of the springs coincides with the direction of flow in the pipeline. When the pipeline is in operation, the spring 7 prevents the element 5 from being eroded by the flow of the working medium, from burning, thermal decomposition, and leakage. The pressure through the gaps between the coils of the spring 7 acts on the element 5, stretching it in the radial direction and thereby increasing the pressure on the inner surface of the spring 6. The latter prevents the element 5 from stretching and breaking to the outer reinforcement. The gaps between twisted turns are so small that element 5 does not penetrate into them due to its viscosity. To reduce the possibility of rubber elongation of the element 5 into the spring clearances, the element 5 is covered from the outside, and even better covered from the inside (reinforced with a layer of glass or other fabric. This allows to slightly increase the size of the gaps between the coils of the spring 6 and thereby increase radial and angular directions. The compensator can be used in fixed joints of pipes, aggregates, etc., in which it is required to ensure the installation and recess of the pipe in the radial direction without dismantling the H shift 7 adjoining their trunk components, especially those requiring frequent replacement of units. This simplifies installation. In addition, this compensator can be used in connections subject to movement during operation. As such, the compensator can replace strength and corrugated rubber-fabric couplings, ensuring operability at much higher pressures. Formula of the invention A technological compensator for a pipeline joint, containing flanges 06 located between an elastic ement and a protective sheath, characterized in that, in order to simplify the installation and removal, the protective sheath is configured in the form of concentrically mounted spring band compression, and the elastic member is disposed between a preload. Sources of information taken into account during the examination 1. USSR author's certificate No. 122375, cl. F 16 L 51/00, 1958. 2. Japanese Patent No, cl. 6 5 A, published. 1977.