To warm houses, stone wool is often used today. It is good because it is not afraid of fire, it is installed easily, but it is inexpensive. One of its most popular types is basalt insulation. Its properties and specifications depend on what its specific purpose is.
This material is one of the cleanest in environmental matters. This insulation acts as one of the types of mineral wool, so it has several names, among them - stone or basalt wool. It surpasses all other types of mineral wool in strength characteristics and is absolutely safe for nature and humans. Recently, basalt cylinders are becoming more common, and they will be discussed in the article.
Description
Such cylinders are also called shells and are insulation with different diameters and thicknesses. It is based on high density basalt fiber, which is 75 kg / m 3 . Products can be coated, and also have undeniable advantages over other heaters. The cylinders have a longitudinal section, which provides ease of installation and allows you to repeatedly use this material without compromising performance.
Basalt cylinders may have a coating of fiberglass, aluminum foil, fiberglass and other coating materials, which are designed to increase wear resistance. On sale you can find Basalt-Pipe, which is a finished thermal insulation from basalt fiber. Products for pipes are intended and are issued in the form of segments and cylinders.
Production methods
Basalt cylinders are manufactured according to GOST 23208-83. In the process, modern European equipment and materials are used that meet the stringent requirements of fire safety and environmental friendliness. Such pipes are structures of a rigidly formed basalt layer and a coating layer.
Cylinders can have a length of 1 m and are designed for different diameters of pipelines. Moreover, the thickness of the insulating layer can be any. Among the most well-known production technologies, one should single out the method of pouring thin fibers with a synthetic binder.
Products can be used for thermal insulation of pipelines, the external surface of which can be heated up to + 250 ° C. Production technologies may vary depending on what product should be output. The first method involves the use of hydromass, the second - plates of dry and hot pressing, while the third involves the addition of a bitumen binder.
Recommendations for use
Basalt cylinders are used for thermal insulation of industrial and domestic pipelines. Since it is based on environmentally friendly material, it can be used in all types of industry, including food. The premises where the insulation will be operated can have any purpose. Cylinders are suitable for work in different conditions, it can be the enclosed space or the open district.
Such shells are used for above-ground and underground laying. Such cylinders are the best way to optimize heat loss in heat supply systems and heat exchangers. Basalt wool cylinders are quite easy to install. To do this, they only need to be opened along the longitudinal seam and put on the pipe. There are tees and bends in the products, which helps isolate the most problematic places of pipelines, namely:
- sidebars;
- transitions;
- the knee.
Heat-insulating basalt cylinders allow you to create a sealed system without joints and seams, which at the installation stage must be closed with aluminum tape. In order to protect the insulation from external factors such as mechanical damage and precipitation, coated cylinders or heat-insulating cylinders, which are available in galvanized casings, should be used.
Additional installation recommendations
One of the key steps towards quality insulation is the correct execution of installation work. Manipulations should be from flanged joints. Cylinders should be installed close to each other. Horizontal seams should be spaced.
Fastening on the pipeline is carried out by knitting galvanized wire or bandages. Two bandages are installed on one product, the distance between which should be 500 mm. Bandages can be made of packing tape or aluminum tapes. Their fastening is carried out by buckles of galvanized sheet steel. Their thickness should be 0, 8 mm. It is acceptable to use rings of black annealed wire or galvanized steel, the diameter of the products can reach 2 mm. Stainless steel wire can be used.
Specifications
Mineral basalt wool cylinders have a thermal conductivity of 0.04 W / mK. A synthetic binder can begin to melt only at temperatures above 1000 ° C. The service life of such products exceeds 50 years. They do not shrink and are resistant to chemicals. They have low water absorption, and the temperature regime can reach + 650 ˚. The lower threshold is - 150 ° C. Moisture absorption does not exceed 5%. Basalt pipe cylinders are non-combustible materials.
Finally
After the installation of the cylinders on the piping system has been carried out, the containment should be installed. It consists of galvanized steel. An alternative solution is a 0.5 mm aluminum zinc. The containment is installed from the containment sections. Work must begin from shutoff valves.
The protective cover must be installed with an overlap. And for the convenience of attaching the casing, you can use a coupling belt with a ratchet locking mechanism . The outer diameter of the insulated pipelines can reach 915 mm. Of the important stages in the design of engineering structures, the selection of the required insulation material should be highlighted. The ability to maintain the required parameters of heat or cold of the carrier, as well as meet the fire safety requirements of the system, depends on this.