Vibration compensators (vibration inserts) are auxiliary pipeline fittings. The main purpose is to absorb vibrations created by other equipment in the system: pumps, compressors. They are also used to compensate for thermal expansion of pipes and lateral, angular displacement within the limits allowed by the design of a particular rubber compensator (depending on the diameter - up to 22 mm lateral and 45 ° angular displacement). They help to reduce noise from the operation of equipment that creates vibrations, to protect against water hammer. By their work they significantly extend the service life of the pipeline system, therefore, in without fail are installed after equipment that creates vibrations, transverse and longitudinal displacement and stretching of sections of highways. Installed next to equipment that creates large vibrations.

The design of the anti-vibration flexible insert

The standard vibration compensator consists of the following parts:

• rubber sleeve or housing;
• fastening to the pipeline system (2 flanges or threaded fittings);
• reinforcing cord.

What materials are vibration compensators made of?

Of course, different manufacturers may offer different versions of this equipment. We will tell you what materials are used in the manufacture of our anti vibration inserts.

• Flanges / threaded connections: carbon steel.
• Reinforcing cord: carbon steel.
• Housing: EPDM (rubber).
• Rushwork vibration compensators also use an internal filler - nylon cord.

Depends on the body material Maximum temperature working environment, which the vibration insert can skip. As a rule, it is from -20 to +105-110°C. Vibration inserts are used for hot and cold water, they can also be used in air transportation. For gases, vibration inserts with a sleeve made of MBR are usually used.

Video: vibration compensator in action

You can buy vibration compensators wholesale and retail in the company "RU100"

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Vibration inserts, also known as rubber expansion joints, find their application in heating, ventilation and cooling systems of enterprises, factories, ships and nuclear power plants. In addition, they are also used in urban water supply and sewerage systems.

The main purpose is to compensate for misalignments that occur due to temperature changes in the system. Vibration inserts are necessary to absorb or reduce the noise that occurs during the operation of the pipeline, and of course, to compensate for various vibrations and water hammer. Vibration inserts have some limitations during operation: the maximum working pressure can be 16 atmospheres, and the temperature is 130 ° C. Nevertheless, rubber compensators are not inferior to devices similar in purpose.

The main advantages of vibration inserts

Good day, dear readers of the blog site

In the heading "Accessories" we will consider vibration inserts. In our modern life pumping equipment is used very widely and diversely. The main purpose of anti-vibration inserts is to prevent the transmission of vibration, mechanical stress noise through pipeline systems, they are also used as compensators for various deformations (temperature, linear and angular). They are used in heating and air conditioning systems to compensate for thermal elongation and compression of pipelines, in water supply systems to prevent the transmission of mechanical vibrations from the pipelines of the system, as well as to protect pumping equipment and pumping stations from the mechanical impact of pipelines connected to them. Compensators are also designed to reduce or prevent. Their use significantly increases the service life of the system as a whole. How to connect to the system vibration inserts or compensators subdivided into coupling and flange. As a working medium in pipelines where sleeve and flange vibrating inserts are used, there can be water, steam, air, gas, oil products, food products.

Technical parameters and materials

• Working pressure: Ru=16 bar.

Connecting diameter coupling vibration inserts: DN 15-50 mm

Applicable materials:

• The inner layer of the bellows is EPDM;
• Bellows frame - nylon fabric cord;
• The outer layer of the bellows is EPDM;
• The coupling connection is made of steel.

Parameters of coupling vibrating inserts:

• Working temperature of the environment: +110°С;
• Working pressure: Ru=16 bar.
• Working pressure: Du 32-600 - Ru=16 bar.
• Working pressure: Du 700-1200 - Ru 10 bar.

Connecting diameter flanged vibration inserts: DN 32-1200 mm

Applicable materials:

• Connecting flanges - steel;
• Bellows rubber - EPDM;
• Bellows frame steel cord - carbon steel; nylon cord is a synthetic fiber.

Device and design

The device and design of compensators (Fig. 1)

The bellows, vibration insert or compensator has a complex, multilayer structure. It consists of outer (Pos. 1), inner (Pos. 3) layers and a frame (Pos. 2). The inner layer is a tube, seamlessly made of rubber, extending beyond the compensator flanges. Direct contact with the medium is carried out precisely by the inner layer. It also performs the function of protection for the compensator frame from impact. adverse conditions environment. An important condition in the production of vibration inserts, is right choice elastomer, either natural or synthetic. Both of these materials have good properties, they are resistant to liquid or gaseous media, ranging from plain water to sulfuric and hydrochloric acids dissolved in it. The frame is the elastic part of the rubber compensator, which consists of several layers of very high quality synthetics, such as nylon. The fabric layer is impregnated in the carcass with mixtures of synthetics or rubber. This was done in order to give them flexibility and mobility. The outer layer of the carcass protects the compensator from negative impact external environment and ultraviolet rays. Rotating flanges (Pos. 4) PN 10 or PN 16 are used to connect a compensator or vibration insert to equipment and pipelines, and American females are used for coupling connection. Flanges are made of carbon steel.

Installation and operation

During installation vibration inserts or compensators you need to pay attention to the following:

1. The inlet and outlet pipelines must be centered and fixed. Expansion joints must not be used as a support structure.
2. The maximum compression of the rubber compensator should not exceed 5 mm.
3. Twisting of the compensator is not allowed.
4. It is necessary to fasten the pipelines from the rubber compensator at a distance of at least three pipeline diameters.
5. Mounting bolts must be installed without direct contact with the rubber. Installation procedure: the bolt is installed on the side of the compensators, and the nut on the side of the pipelines. In the case of operation of vibration inserts in systems with increased loads on pipelines, rod set, protecting compensator - vibration insert from exceeding the allowable value of stretching or twisting.
6. Simultaneous operation of the compensator in tension and twisting is prohibited.
7. In case of welding work the rubber part of the compensator must be protected.
8. It is forbidden to paint compensators or vibration inserts, as well as cover them with a layer of insulation.

Due to the vibration inserts, it is not possible to compensate for misalignments that occur during the installation of the pipeline. Suction and pressure pipes must be equipped with appropriate supports, mounted as close as possible to the pump. The mating flanges must be laid relative to the pump flanges in such a way as to exclude any transmission of voltage from them to the pump, as this can lead to damage to the pumping equipment. Expansion joints should be mounted directly from the pump at a distanceequal to one or two nominal flange diameters, both on the side of the suction pipeline and on the side of the discharge pipeline. This will avoid the formation of turbulent flow in expansion joints and creates optimal conditions during suction and will create minimal pressure losses in the discharge pipeline. At high water flow rates (more than 5 m/s), vibration inserts should be mounted bigger size according to the pipeline diameter. For flanges with diameters greater than DN 100, expansion joints with limiting braces must always be used. On (Fig. 2) an example of mounting vibration inserts

To extend the life of pipelines, it is necessary to use elastic vibration inserts or compensators. They compensate for changes in the length of pipes, when they expand or contract, as well as possible ruptures of pipelines as a result of temperature changes, pressure changes, and the presence of various vibrations in pipelines. For optimal performance pumping equipment, and to minimize noise and vibration, it is necessary to provide ways to dampen vibration from the pump. These methods must be used without fail if pumping equipment with electric power over 11 kW is operated. Although the possibility that engines with less power can also create unwanted noise and vibration. To reduce these consequences, vibration inserts and vibration supports are used. Vibration inserts have good soundproofing properties, they absorb and reduce the noise that is inevitable during the operation of pumping equipment, and are also resistant to hydraulic shocks that occur during the operation of pumps. Vibration mounts are designed for passive and active vibration isolation of pumping equipment, as well as for height adjustment when installing pumps according to the level. To compensate for the movement of pipelines during shifts, shear compensators are used. They have stop rods designed to protect the vibrating inserts from damage. Limiting rods can be set for both compression and tension. These compensators can be operated very long time, since due to this design, the expansion force is not transmitted to the equipment.

Vibrating inserts do not require constant technical maintenance or repair if the operating conditions are observed. Periodically, it is necessary to carry out technical inspections for the absence of leaks, and, if necessary, tighten the fixing bolts or coupling connections.

Thank you for your attention.

Rubber cord flange vibration insert it is also used to prevent the transmission of any kind of mechanical vibrations in individual parts of pipelines. It can be successfully used as compensators in cases of any kind of temperature, linear or angular deformations.

In case of connection to the pipeline of a pump, compressor, ventilation unit or any other device, vibration inserts installed in front of or behind these devices significantly reduce the level of vibration and noise in the pipeline that may occur in these cases.

The scope of this element of pipeline fittings is unusually wide. vibration inserts are installed almost everywhere where there is a piping system - in air conditioning and compressor plants, pumping stations. They are also used in order to facilitate the working conditions for the installation and dismantling of valves, it is simply impossible to do without them on the suction and pressure pipelines of pumping or compressor installations.

AT living conditions they are widespread in hot and cold water supply networks, in heating systems, as well as in sewer pipelines. To facilitate the specific operating conditions that may arise during the operation of the pipeline, the selection of inserts is made by choosing from several of their varieties, which are produced for each nominal diameter of the pipeline.

For example, by installing a butterfly valve instead of a valve, it is widely used to compensate for differences in the size of the valve and valve. flange vibration insert, which is installed in series with the shutter. This greatly facilitates and reduces the cost of the process of mounting the shutter.

Stop valves for pipes.

Butterfly valves are a necessary part of a big process!

Shut-off valves for industrial and general use used in many areas of human activity - chemical, pharmaceutical, shipbuilding and many others. Armature is one of the main engines of many important technological processes. Butterfly valves- a necessary part of this engine.

Such a shutter both locks and regulates. He is essential element pipeline, any oil pipelines. main part rotary valve is a rotary disk which can be different materials, usually from of stainless steel or cast iron.

Shut-off valves from Elavis-Zenner

Sphere of business interests Companies ELAVIS extremely versatile - in addition to the successful implementation of various metering devices and consumption of resources (mainly water and heat) of various designs, ELAVIS LLC is always glad to offer its potential customers a wide selection of various elements of the highest quality shut-off, pipeline valves manufactured in Slovakia under the VITECH brand.

The product catalog of Tecofi, the largest European company for the production of pipeline fittings, is represented by metal expansion joints and elastomer expansion joints, which protect the pipeline from deformation under vibration and temperature. Noise-absorbing and vibration-absorbing ability is provided by the elastomer from which the body of this Tecofi compensator model is made. Elastomer is an elastic material with highly elastic properties. The EPDM bellows, used as a sealing and sensing element, has high wear resistance to thermal and mechanical stress, which ensures reliable operation throughout the entire service life. The design of the bellows allows the compensator to change under the action of longitudinal, transverse and angular bends. Internal reinforcement is made of steel. The connection to the pipeline is flanged, the flanges are made of galvanized carbon steel. The resource of the product is at least 100 thousand opening-closing cycles. The tecofi anti-vibration compensator is available in various sizes.

Vibration insert Tecofi

For the full operation of pipeline systems, along with compensators, anti-vibration inserts which reduce vibration and various noises. Vibration insert Tecofi It consists of special rubber, which has high heat-resistant qualities. Ability to interact with work environments such as compressed air, water in the temperature range from -10°C to + 110°C is provided by the elasticity and strength of the material. The Tecofi Vibration Insert can also act as an expansion joint in the event of a disturbance in the pipe system, thus providing additional protection to the expansion joint.