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Fabric expansion joints
Instead of lens expansion joints we use fabric expansion joints for gas, dust and air pipes with low pressure (up to 1,5 atmospheres) and large operating displacements. Due to their low fabric rigidity fabric expansion joints are able to detect and absorb the slightest pipeline movement.
Fabric expansion joints by “Kompenz” - are constructions specially designed according to the exact technical requirements of the customer. They consist of chemical and heat-resistant materials integrated into one composite fabric insert, and also connection and protection fittings.
Fabric expansion joints are used in Russian industry more and more often. “Kompenz” designs expansion joints for new developments as well as for expired metal expansion joints. In both cases the highest requirements are imposed upon expansion joints reliability and time operational characteristics.Fabric expansion joints are used in high temperature and chemical aggressive environments. That is why the materials for production of fabric expansion joints should be of highest quality.
Also we normally use products of CJSC "Novgorod glass wool plant" for production of fabric expansion joints, i.e. technical-use glass fabric, basaltic and glass-fiber mats. Specialists of our company always follow all new developments and innovations of insulation materials market and check if it is possible to use such materials as Termastek, Evroizol, Penoplex, Paroc, Isover, Rockwool and DuPont in production of fabric expansion joints.
Tests of materials with different heat insulating quality were held in Polytechnic Institute of Novgorod State University n.a. Yaroslav the Wise on the basis of departments of material science and building structures. These studies allowed us to specify optimal constructions for fabric expansion joints, to achieve very high strength characteristics of fabric expansion joints as well as values of gas tightness, heat and chemical resistance.
We produce fabric extension joints for pipelines with gas type environments and low pressure while large operating displacements. This type of expansion joints is characterised by low rigidity and small weight, and as consequence it has small thrust forces and it is capable of providing internal stress drop in pipeline materials caused by temperature changes as well as displacements and vibration of processing equipment. This stress drop will lead to less emergency situations.
New materials and advanced technologies provide fabric expansion joints with unique characteristics:
Operating pressure in systems: up to 2 atmospheres ;
Significant absorption capacity: axial displacements – up to 70 % of initial distance, lateral displacements – up to 30 % of initial distance, angular and twisting displacements;
Wide temperature range of application: operating environment temperature – from -60 °С to +1100 °С;
Special constructions of expansion joints are adapted to work in conditions of high ash and dust content, wet gases (steams) and vibrations;
Resistance to the most of chemically aggressive agents. Using modern polymeric materials, silicones and different fabrics it is possible to produce high temperature and chemical resistant expansion joints of different form and application;
It is possible to produce expansion joints of almost any form and dimensions (from 50 mm to dozens of meters of each side) according to the order and agreed technical specification;
Long warranty period – up to 3 years, lifetime period – from 5 to 15 years and more.
Application fields:
Chemical industry
Metallurgic industry
Oil-refining equipment
Heat power stations
Gas turbines
Scrubber systems
Mining and metallurgical works
Cement and limestone furnaces
Pulp and paper industry
Steam generators
Waste recycling (burning) and combustion gases processing companies
Air conditioning, dust suction and filtration
Advantages of fabric expansion joints by “Kompenz”:
- Large displacements - fabric expansion joints are able to compensate significant displacements in all directions compared to other types of expansion joints.
- Operating flexibility – they are able to move in several directions at once absorbing significant displacements caused by uneven heating of pipeline or displacements of processing equipment.
- Noise and vibration absorption – high capacity of elastomers and fabrics to absorb vibration allows reducing noise level and preventing early wear of the whole system due to vibration.
- Low cost of transportation and installation – due to small weight fabric expansion joints are cheaper to transport, install and replace. Metal fittings and fasteners can be produced by the customer according to drawings of “Kompenz” company.
- Repairable – fabric expansion joints can be repaired and temporary used until new ones will be produced and delivered.
- Metal stress reduction – nonmetal expansion joint does not cause thrust forces in fixing points that leads to internal stress drop in gas duct material.
Types of fabric expansion joints
Single- and multi-wave constructions
Construction of fabric expansion joints
Types of fabric inserts fixation
Construction of multilayer expansion joints
