Categories of pipelines. The definition of the category of the pipeline. The classification of pipelines by categories and groups

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2020-04-23 22:20:18

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Modern industry can not do without this means of transportation, such as pipeline. With his help, delivered on a fairly large distance, liquids, gases. Tubing to last a long time, it is made taking into account the properties of the materials for which they are intended. So today there are a large number of technological, transmission and other communications for a variety of substances.

This is a relatively inexpensive form of transportation. How it works, how organized the process, will help to understand the existing categories of pipelines. There are several different criteria of classification. This allows you to apply and exploit the communication as efficiently as possible.

Assign pipeline

The Correct definition of the category of the pipeline is necessary in the process of production and in the field. Depending on the type and conditions of transportation there is a greater or less risk when performing service. On the highway may be transferred in bulk, liquid or gaseous products.Category pipelines

The Range of applications is great. Pipelines can be operated to transfer fuel (oil, fuel oil, gas) chemical reagents (oxygen, acetylene, alkali, ammonia). Also with the help of available communications can transport oil, water. This system is essential as Housewives and huge industrial enterprises.

Substances can be heated or cold. The pressure in the transmission can be small or very large. Depending on the type of mission system choose the materials for the manufacture and connection of pipes, apply a certain label.

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Material

The Classification of pipelines by categories and groups running on different grounds. Material for the manufacture of the system elements can be steel, nonferrous metals, synthetic substances. Each of them has its own peculiarities.the Classification of pipelines by category

Metals are welded in the field. Therefore, the maintenance of such a system is performed simply and efficiently. The wall thickness of pipes and connections should be minimal, to withstand the exerted load. Therefore, the production of pipes is constantly being improved.

The material put forward higher requirements. Today, for the manufacture of pipes used steel, artificial materials. The choice depends on the purpose of the system. Steel can be structural, alloy and carbon. In some cases there are non-ferrous metals.

The surface of the products may have a special coating. But over time more and more artificial materials. This polypropylene pipe. They are easy to install, durable.

Characteristics of classification

There are various categories and groups of pipelines. Classifying signs there are many. In addition to the difference in materials, the pipelines differ in diameter, the ability to withstand pressure, corrosive substances. There is a division of systems in accordance with the thermal load.Category and groups of pipelines

Also, the pipelines differ in location and scale. The system can take place on the surface or underground, in the water. On the scale are the technological backbone, utilities and machinery (marine) pipelines.

When you create and maintain consideration in the environmental conditions of the communications. Each category or group requires an understanding of its features. This allows you to correctly assess the organization presented in the communication, as well as the conditions of their operation.

Classification of pipelines

Pipelines designed to transport various types of fuel for a reasonably long distances. For their manufacturing are used exclusively metal, assembled by welding method. The tubes have either straight or spiral seam.Category technological pipelines

On the basis of exposure to pressure distinguish 2 categories of pipelines. Exceed the specified level is strictly prohibited. Category I pipes can withstand pressure of 2.5-10 MPa, and category II – a 1.2-2.5 MPa.

Depending on the diameter there are 4 categories of roads. To I of them are tubes with cross-sectional dimension of 1-1,2 m. It is the largest of the product. Category II correspond to pipe diameter of 0.5-1 m. this is followed by the most delicate varieties. To the III category of 0.3-0.5 m, and to the IV – less than 0.3 m. these are the basic signs of classification of the main pipes.

Process piping

Technological types of communication used in a production environment. For this transport system transfer of raw materials, energy for processing, and also removes waste.Category and group process piping

In Almost every sector of the economy cannot do without such systems. Categories of technological pipelines klassificeret, in addition to diameter and pressure on a number of grounds.

Location there are internal and interplant varieties. Also a very important factor is resistance to heat, aggressive media. Inthe process of implementation of various technological cycles of communication are subjected to different loads.

Classification of technological pipes

Technological pipelines are grouped according to a number of important respects. By way of accommodation there are surface, underground and aerial types. But more carefully in the manufacture and selection of elements of the system relate to the strength characteristics.

Categories and groups of process piping is isolated on the basis of the pressure inside the system and temperature of transported substance. In the first case the systems are non-pressure, vacuum and low, medium or high pressure.

According to the principle of the working temperatures are creagene, cold, normal or hot pipes. There are also products designed to a very strong heating of the transported substances.

Features of technological pipes

Classification of pipelines by category takes into account the features of this kind of system. Communications industrial transportation group in accordance with the aggressiveness of the internal environment. the Classification of pipelines by categories and groupsThere Are pipes for non-aggressive, weak, medium and highly aggressive substances. In the production of often used various non-metallic materials for building system. The most famous of these is polypropylene.

A Characteristic feature of this group of materials is considered long life, and ease of Assembly and maintenance. However, the effectiveness of such materials depends on the choice of the products in accordance with the operating conditions. For each technological process have been developed special categories of pipelines.

Household pipelines

Considering the existing categories of pipelines, should pay attention to household systems. Their main purpose is to transport liquids or gases in heating systems, life support. They are also served cold, hot water, steam, gas, chemicals for maintenance of boiler equipment, etc. At the pipelines of this type can convey alkali, acid, oil, and petroleum products.

The Indicators of pressure, temperature, corrosive environment shall be taken into account in the production of each category of products. And take into account the maximum possible values of the listed parameters.

Marking pipelines

To avoid the question of how to define the category of the pipeline during operation, uses a special marking. This allows repair technicians can evaluate the correctness of one or another impact on communication.

Detailed information about the system can only provide supporting documentation of the manufacturer, putting the equipment into operation. But the basic rules of marking of pipelines are successfully applied at all sites. This allows in General to identify which category belongs to the pipeline.How to determine the category of the pipeline

The Yellow color of the gas pipeline. Red markings are reserved to the pipes through which steam is passed. If the system is supplying the equipment of fluid, the system is dyed green. Process water is also used his own mark. It is black color. Even visually you can determine what substance is transported by the system.

Severity

Considering the category of pipelines, it is necessary to pay attention to the degree of their danger. It depends on the temperature, pressure and characteristics of transported substances. Also take into account the remoteness from settlements and the location type system.

According to these data, there are 5 categories of severity: B, I, II, III, IV (represented in descending order by level of threat). This figure is taken into account in the process of operation and repair of the system.

The Wait staff is taking a number of prescribed instructions of actions in the repair of communications. Otherwise, it may result in an accident or even a large-scale disaster.

Connections

The pipe Joints are subjected to high load from both external and internal environment. Therefore, they are considered the weak point of any system. By studying the category of pipelines, it is necessary to evaluate places of their connections.

Depending on the type, scale, communication, perform certain types of joints. For the main varieties they are performed by welding, and the technological species acceptable to make spike details.

For domestic pipelines required (depending on material type and specifications) seals. They are also selected in accordance with the operating conditions. That the joints were of good quality, the pipe ends should be smooth, the diameter is aged in the manufacture with great precision.

In the manufacture of parts of pipelines it is important to produce items of sufficient strength with minimal material consumption. The number of connections is reduced maximally. This allows you to create a strong, durable system.

Correctly choosing the category of pipelines, you can create an efficient and effective transport communications. Possessing information about the group, the characteristics of the highways, will be able efficiently and safely to repair elements of the system. Therefore, installation and service organizations needsnote the category of each pipeline in the area of their competence.


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Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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