Products

Products

Juntas de dilatación metálicas

Metal Expansion Joints

Las aplicaciones industriales forman parte de los entornos más severos de la industria, sometidos a calor intenso, presión, vibración y al efecto combinado de estos factores sobre los equipos de la planta.
Las juntas de expansión metálicas están disponibles en una amplia gama de materiales: desde diversos aceros inoxidables, aleaciones de alto níquel (Inconel, Hastelloy, Monel), acero inoxidable dúplex y titanio.
Se entiende por junta de expansión cualquier dispositivo que contenga uno o más fuelles metálicos, utilizado para absorber cambios dimensionales —como los provocados por la dilatación o contracción térmica de tuberías, conductos o recipientes— y para absorber vibraciones ocasionadas por motores, bombas, compresores, etc.
En otras palabras, la junta de expansión metálica es un dispositivo formado principalmente por fuelles flexibles, destinado a absorber movimientos en un sistema de tuberías, al tiempo que contiene la presión y el medio que circula a través de él.
El elemento clave de una junta de expansión es el fuelle. El fuelle es un elemento flexible compuesto por una o más corrugaciones y las tangentes extremas.Una corrugación (convolución) es la unidad flexible del fuelle, y las tangentes extremas son las secciones rectas sin corrugaciones situadas en los extremos del fuelle.
La flexibilidad del fuelle proviene de la flexibilidad inherente de la corrugación, dada su forma y su propio diseño.
Aplicación:
Dilatación térmica de tuberías. Conexión flexible de equipos cuando se requieren altas temperaturas y movimiento de compresión.
Medios:
Agua de mar, agua dulce, agua potable, aguas residuales domésticas, petróleo crudo, combustible, aire, gas, vapor y polvos granulares.

Rubber expansion joints
Brand

Luoying

Rubber expansion joints
Size

Tubo: 2-1/2 pulgadas - 100 pulgadas

Rubber expansion joints
Temp

Rubber expansion joints
Pressure

50, 150 y 250 psi

Product Range

Customized Products

  • Rubber expansion joints
  • Rubber expansion joints
  • Rubber expansion joints
  • Rubber expansion joints
  • Rubber expansion joints
  • Rubber expansion joints

Technical Notes

Manufacturing of rubber expansion joints

Rubber expansion joints

 

Wrapping fabric reinforced rubber sheets

Rubber expansion joints are mainly manufactured by manual wrapping of rubber sheets and fabric reinforced rubber sheets around a bellows-shaped product mandrel. Besides rubber and fabric, reinforced rubber and/or steel wires or metal rings are added for additional reinforcement. After the entire product is built up on the mandrel, it is covered with a winding of (nylon) peel ply to pressurize all layers together. Because of the labor-intensive production process, a large part of the production has moved to eastern Europe and Asian countries.

 

Molded rubber expansion joints

Some types of rubber expansion joints are made with a molding process. Typical joints that are molded are medium-sized expansion joints with bead rings, which are produced in large quantities. These rubber expansion joints are manufactured on a cylindrical mandrel, which is wrapped with bias cut fabric ply. At the end the bead rings are positioned and the end sections are folded inwards over the bead rings. This part is finally placed in a mold and molded into shape and vulcanized. This is a highly automated solution for large quantities of the same type of joint.

 

Automated winding of rubber expansion joints

New technology has been developed to wind rubber and reinforcement layers on the (cylindrical or bellows-shaped) mandrel automatically using industrial robots instead of manual wrapping. This is fast and accurate and provides repeatable high quality. Another aspect of using industrial robots for the production of rubber expansion joints is the possibility to apply an individual reinforcement layer instead of using pre-woven fabric. The fabric reinforcement is pre-woven and cut at the preferred bias angle. With individual reinforcement it is possible to add more or less fiber material at different sections of the product by changing the fiber angles over the length of the product.

Advantage

Nsure that the hose meets the published levels.

dimensions

Economy of minimal face-to-face dimensions

Lightweight

Lightweight construction requires no special handling equipment

Reduced

Reduced fatigue factor and reduced heat loss

Greater

Greater recovery from movement

Installation

Ease of Installation and small space requirements

Insulates

Insulates against the transfer of noise and vibration

Expansion joint accessories

Quality decides value
Rubber expansion joints

Flange

Piping components can be bolted together between flanges. Flanges are used to connect pipes with each other, to valves, to fittings, and to specialty items such as strainers and pressure vessels. A cover plate can be connected to create a "blind flange" Flanges are joined by bolting, and sealing is often completed with the use of gaskets or other methods. Mechanical means to mitigate effects of leaks, like spray guards or specific spray flanges, may be included. Industries where flammable, volatile, toxic or corrosive substances are being processed have greater need of special protection at flanged connections. Flange guards can provide that added level of protection to ensure safety.

Rubber expansion joints

Covers

Fasteners are used for fastening and securing materials such as wood, metal, plastic, or concrete. They include nuts and bolts, threaded rods, structural bolts, machine screws, wedge anchors, washers, rivets, and more in a variety of types and sizes, including metric and inch.

Rubber expansion joints

Particulate barriers/purge connectors

In systems that have a media with significant particulate content (i.e. flash or catalyst), a barrier of ceramic fiber can be utilized to prevent corrosion and restricted bellows flexibility resulting from the accumulation of the particulate. Purge connectors may also be utilized to perform this same function. Internal liners must also be included in the design if the expansion joint includes purge connectors or particulate barriers.

Rubber expansion joints

Liners

A gasket is a mechanical seal which fills the space between two or more mating surfaces, generally to prevent leakage from or into the joined objects while under compression. It is a deformable material that is used to create a static seal and maintain that seal under various operating conditions in a mechanical assembly.