Spring elements
To compensate slight vertical displacements in the piping, spring components are used as supports. The functioning of these components is based on preset helical coil springs which exert a variable supporting load over the whole range of movement corresponding to the given spring characteristics.
Load variations resulting from this are limited through corresponding specifications based on stress calculations for the piping - this depends on the sensitivity of the system.
The fundamental principles relevant for the function of the spring components are found in the MSS SP 58 and VGB R 510 L guidelines.
LISEGA spring hangers
Various versions of spring elements, ideally suited to whatever structural requirements exist, are available. The optimum choice depends on the installation situation.
|
Type 21
This type, the one most frequently used, is fitted with an upper connection for suspension. It is installed wherever the surrounding location offers a suitable connection point and sufficient space. The upper connections can be universally adapted with standard components to any given situation.
|
|
|
Type 22
Like type 21, but for higher loads.
|
|
Type 25
This type is frequently used for its simple installation, just seating it on the existing steel. The connection is made by a rod passing through the unit.
|
|
|
Type 26
Like type 25, but for higher loads.
|
|
|
Type 29
If the installation location does not permit suspension, then this model is a suitable alternative as a "prop" support.
Where there is considerable horizontal displacement of the support load, and steel slides on steel, lateral forces can under certain conditions have an adverse effect on the operation of the support system.
To take precautions against this, the use of PTFE bearings is recommended. In this case the counter bearing should have a stainless steel surface.
|
|
|
Type 28
Like type 29, but for higher loads.
|
|
Type 20
Unlike the spring support type 29, horizontal displacement can be taken up almost free of lateral forces by this design. This way that constraining frictional forces are completely excluded at all levels of movement, vertical and horizontal
|
|
|
Type 27
These particular components act both in tension and compression and are used to stabilize the piping and other plant components. An additional damping effect is obtained at the same time. The connection parts correspond with those of Product Group 3
|
|
Type 79
Type trapese
|
|
|
|
|
Design related advantages:
- no welding (types 20, 21, 27)
- fully galvanized surfaces
- specially prerelaxed springs
- integrated tightening devices
- adjustable blocking system
- variable connection possibilities
- TÜV suitability test
- a wealth of experience from over a million applications
|
|
|
|
