kuemmerle rubber vibration isolator, Germany kuemmerle model, kuemmerle price

kuemmerle rubber vibration isolators consist of a smooth bellows compensation element with rubber flanges at both ends and metal flanges. The metal flanges often adopt a loose structure. The surface of the bellows compensation element is rubber, and the inner layer consists of multiple layers of high-strength fiber or steel strip (wire) reinforced interlayers. The reinforced interlayers, such as reinforcing fibers or steel strips (wires), extend all the way to the rubber flanges at both ends, which contain a hard steel wire skeleton. Rubber expansion joints have large displacement compensation capabilities, allowing for axial, lateral, and angular displacement compensation. They offer noise reduction, vibration damping, and certain corrosion resistance. Featuring high pressure resistance, good elasticity, large displacement capacity, effective vibration absorption and noise reduction, and easy installation, they are widely used in piping systems for water supply and drainage, HVAC, fire protection, compressors, papermaking, pharmaceuticals, ships, water pumps, fans, etc.

kuemmerle rubber vibration isolator selection

Selection instructions for flexible rubber joints: 1. The standard applicable temperature range for rubber joints is -200 to 70°C. Instantaneous temperature can reach 115°C, and the operating temperature is 70 to 115°C. 2. For flanged rubber joints, if the working pressure and temperature are high (nominal diameter above 200, temperature above 70°C, working pressure above 1.5Mpa), flanged rubber joints equipped with limit devices can be selected. 3. For flanged rubber joints, during installation, the bolts connecting the flanges must pass from the inside of the flange outwards to both ends. Use flat washers or spring washers, and tighten the bolts diagonally and gradually. For rubber joints with union connections, do not swap the union connectors at the left and right ends during installation to avoid product leakage or damage.

kuemmerle rubber vibration isolator advantages

It is a flexible element that effectively compensates for axial deformation. For example, expansion joints welded to the shell of fixed tube-sheet heat exchangers have high axial flexibility and are prone to deformation. They can compensate for the thermal expansion difference between tubes and shells caused by different wall temperatures, reduce their axial loads, thereby minimizing thermal stress in tubes, tube sheets, and shells, and avoiding strength failure, instability failure, and tube pull-out failure. There are many types of expansion joints; common structures include bellows, ring plate welded, and clamped shell types. Among them, bellows expansion joints are the most widely used, while ring plate welded expansion joints are only suitable for atmospheric or low-pressure applications.

kuemmerle rubber vibration isolator applications

Expansion joints are also commonly referred to as compensators or expansion loops. They consist of a bellows (an elastic element) that forms the main working body, along with accessories such as end pipes, supports, flanges, and guide tubes. An expansion joint is a flexible structure installed on vessel shells or pipelines to compensate for additional stresses caused by temperature differences and mechanical vibration. It utilizes the effective axial deformation of its main working body, the bellows, to absorb dimensional changes in pipelines, conduits, vessels, etc., caused by thermal expansion and contraction, or to compensate for axial, lateral, and angular displacements of pipelines, conduits, vessels, etc. It can also be used for noise reduction and vibration damping. In heating systems, to prevent pipeline deformation or damage due to thermal elongation or temperature stress when the heating pipeline heats up, compensators need to be installed on the pipeline to compensate for the thermal elongation of the pipeline, thereby reducing the stress on the pipe wall and the forces acting on valve components or support structures. As an elastic compensation element capable of free extension and compression, expansion joints offer advantages such as reliable operation, good performance, and compact structure, and have been widely used in chemical, metallurgical, nuclear energy, and other sectors. There are various forms of expansion joints used on vessels; in terms of bellows shape, U-shaped expansion joints are the most widely used, followed by Ω-shaped and C-shaped types. For expansion joints used on pipelines, in terms of structural compensation, they are classified into universal type, pressure-balanced type, hinged type, and universal joint type.

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