Bellows compensator is a flexible element with bellows as the core, which makes axial, transverse and angular compensation on the pipeline. In order to reduce the self-excited phenomenon of the medium, the axial type compensator is used. There is no inner sleeve inside the product, which greatly limits the radial compensation ability, so it is generally only used to absorb or compensate the axial displacement of the pipeline (if a small amount of radial displacement is really needed in the pipeline system, its diameter displacement can be explained when ordering): the transverse displacement compensator (large pull rod) mainly absorbs the transverse displacement perpendicular to the axis of the compensator, The small tie rod lateral displacement compensator is suitable for absorbing lateral displacement, and can also absorb the combination of axial, angular and any three directions of displacement: hinge compensator (also called angular compensator). It is used in combination with two or three compensators (single hinge compensator has no compensation ability) to absorb the transverse deformation in a one-way plane. Universal hinge (angular) compensator is used in combination with two or three compensators to absorb the deformation in three-dimensional direction.
The non-metallic compensator can compensate the axial, transverse and angular displacement of the pipeline. It has the characteristics of no thrust, simplified support design, corrosion resistance, high temperature resistance, noise elimination and vibration reduction, and is especially suitable for hot air pipeline and soot pipeline. Function of pipeline compensator: 1. Compensate the axial, transverse and angular thermal deformation of absorption pipeline. 2. The expansion and contraction of the corrugated compensator is convenient for the installation and disassembly of the valve pipeline. 3. Absorb equipment vibration and reduce the impact of equipment vibration on pipeline. 4. Absorb the deformation of pipeline caused by earthquake and ground subsidence.
There are many kinds of rubber compensators, but their structural characteristics are roughly the same. The rubber compensator is mainly used to solve the problems of interface displacement and axial expansion and contraction in the pipeline, but the shock absorber and shock absorber throat are mainly used to reduce vibration and noise. Second, because of its special structure, it can reduce the noise and vibration generated in the pipeline system, reduce the damage to the pipeline and greatly reduce the cost compared with other compensators. Third, the materials selected are various. The rubber compensator can be made of materials that are acid resistant, alkali resistant, oil resistant, corrosion resistant, high temperature resistant, etc.
The rubber compensator has two connection modes, one is the common use of flange connection. The use method is that the flange should align with the flange on the pipeline, and then tighten diagonally. (It is necessary to clarify the medium and pressure in the pipeline). The second is the clamp connection, which is used to make the clamp can be tightened on the pipe. Generally, the clamp connection requires low pressure.
Before leaving the factory, non-metallic rubber compensators generally meet the following requirements:
1. Verify whether the dimensions are the same as those in the drawings or technical requirements;
2. Confirm whether all accessories are correct and in place;
3. Confirm whether the appearance is clean and tidy;
4. Confirm whether labels and certificates are pasted;
The product can basically leave the factory if the following points are met
1. The product itself should be packed tightly, not loose, and the packaging should be loose on the way;
2. All accessories, such as flanges and bolts, should be placed together with the product to avoid loss;
3. During loading and unloading, special personnel shall be assigned to supervise to avoid collision;
4. Keep away from loading and unloading during transportation;
5. Keep away from sharp objects to avoid scratches on the surface;
6. Do not press it heavily, or it will deform easily.
Performance characteristics of high-temperature rubber compensator
Compensating thermal expansion: metal compensator that can compensate in multiple directions in a small installation space and can only compensate in one direction.
Compensation for installation error: error caused by pipeline installation.
Sound attenuation and vibration isolation: fabric fiber and insulation cotton have sound attenuation and vibration isolation, which can effectively reduce the noise and vibration of boiler, fan and other systems.
No reverse thrust: the main material of the product is fabric fiber, which is powerless to transmit. The use of fabric expansion joints can simplify the design and avoid the use of large bearings.
Good high temperature resistance and corrosion resistance: the fabric fiber itself has good high temperature resistance and corrosion resistance. The expansion joint made of fluororubber fabric layer can be used in the occasions of electrolytic aluminum and other highly corrosive media in the industry.
Good sealing performance: under the environment of sealing requirements, perfect production and assembly can basically ensure no leakage of expansion joints.
Long service life: the price is 1/2~1/3 of that of similar products, and the service life is 2~2 of that of metal compensator under the same conditions.
Convenient installation and maintenance: due to simple structure and convenient installation and maintenance, when the fabric fiber layer exceeds its service life, it can be replaced directly.
