Sewer pipes need heating, external and drain cleaning pipes, cleaning filter pipes leading to drainage wells. The heating cable is used for storm sewer, for the drainage system. The Avarit catalog presents solutions from European manufacturers and South Korean brands (Heatus, Lavita, Fine and other brands).
Insulate the sewer pipe with a special heating cable to prevent freezing Wastewater in the cold season, so that ice plugs do not form inside the system during frosts. A thermal cable with a polyolefin sheath is mounted outside the pipe. For installation inside the pipe, cable systems are produced that are protected by a special sheath. Sewer cables from Korean brands have proven themselves to be excellent in external heating.
External sewer heating with an ungrounded cable produced by Lavita, for example, is considered a budget option.
Sometimes the question arises: what type of heating wires function better and last longer. When answering, initial data is required: footage, width and type of sewer pipe that needs protection, climate zone, in which the pipeline is installed. Tell the manager: you need a heating cable only for the sewer system of your house or for the general sewer system the entire village. The Avarit store will help you decide on the choice of product for a specific request and calculate the price of a heating cable for sewerage in a given case. Components for pipe heating systems, sensors, and thermostats are available for sale.
We will help you choose a sewer heating cable
Cable power outside the pipe:
Prices and delivery
Sale of cable for sewerage with delivery to regions of Russia. Pickup points in Moscow, St. Petersburg and Orenburg (online store prices).
Considering climatic features in most regions of Russia, when laying external sewage systems, it is necessary to provide heating sewer pipes. More recently, to prevent water from freezing in pipelines, the technology of laying pipes below the soil freezing level and insulating them with various thermal insulation materials. You can learn about more modern technology from our article.
Electric heating of sewer pipes
Today this method is considered obsolete; it has been replaced by latest developments in the field of heating engineering, making it possible to provide heating for pipes laid above the soil freezing line, and even external ones.
Of course, installation electrical systems heating pipes is an additional material investment, but if there is electric heating There are no costs for laying pipes in the ground.
Electrical cables for heating pipes are made by many different manufacturers. According to the installation method, heating systems are divided into:
- internal;
- external.
External heating systems for sewer pipes
Outdoor heating methods
External heating of sewer pipes can be film or cable.
Film type external heating systems are the most common and relevant. The fact is that the cost of such a system is quite acceptable, and its installation does not cause difficulties. The material for the production of film heating is heat-radiating film. The film system has the following advantages:
- heat is distributed evenly over the entire area of the pipe;
- the system has low power, allowing you to save money during operation.
Pro tip: When installing a film heating system on sewer pipes, simply wrap the film around the pipes and secure it securely with clamps or tape.
Another option for heating sewer pipes is possible - using a heating cable. IN in this case a cable laid along the heated pipe, when the system is turned on, heats it to a predetermined temperature.
Electric heating cable is available in various types:
- Self-regulating cable - the most promising of all existing species heating cable. He is able to “adapt” to climatic conditions: When the outdoor temperature rises, the cable resistance automatically decreases, which leads to a decrease in power consumption and, consequently, to a reduction in energy costs. Moreover, the heating power may be different in different sections of the insulated pipe. When using a self-regulating heating cable, you can do without thermostats.
- Resistive cable costs less, but the power and resistance in such heating systems are not regulated when the temperature changes environment, so the cable may fail due to overheating. To prevent breakdowns, sensors and thermostats must be installed in the heating system.
- Zone cable the principle of operation is similar to resistive, but unlike it, it does not release heat along its entire length, but only in certain zones. Thanks to this feature, it is possible to cut and redistribute the cable to any place in the sewer system. The use of zonal cable is advisable for insulating metal pipelines and tanks.
Pro tip: The heating power of the electric heating cable is specified by the manufacturer in the operating instructions. Therefore, carefully reading the instructions will allow you to purchase exactly what you need.
Installation of heating cable outside pipes
When laying an electric heating cable, take into account the following rules:
- The cable is pulled strictly along the pipe - this is the only way to avoid possible errors installation, prevent various cable damage and significantly save time.
- The electrical cable can be laid out in a spiral laying, but only if the project requires it.
- When laying, crossing the cable on supports and in other places is not allowed.
- Cable installation must take into account dead-end and bypass lines.
Fastening the heating cable to sewer pipes
The electric heating cable must be attached to heated sewer pipes. Fastening is carried out at intervals of at least 200 mm with heat-resistant tape or synthetic cable bandage. If the heating cable has mineral insulation, fastening is done with tie tapes or a steel cable tie.
When choosing fasteners, take into account the following recommendations:
- the preferred means of fastening is adhesive tape;
- When using a cable band, its resistance to chemical reagents and increased temperature effects;
- if the heating cable is placed in a polymer sheath, the use of metal fasteners is prohibited;
- When gluing aluminum-based adhesive tape onto a heating cable, its thermal power, therefore, the use of such tape must be justified by the requirements of the project;
- if it is necessary to insulate synthetic sewer pipes, the best way cable fastening will be made of aluminum adhesive tape or passing foil under the cable (in some cases, under and over it), as this ensures effective heat transfer and distributes heat evenly.
Internal heating systems for sewer pipes
The use of internal heating systems occurs on small areas sewer pipeline, most often at street pumps. Internal systems the principle of operation is similar to external systems, however, when inserting the heating cable into the pipe, preliminary installation of a tee is necessary. Through it the heating electric cable will be introduced into the pipe.
Laying heating cable inside sewer pipes
There are times when it is necessary to lay an electric heating cable inside a sewer pipe. Then the cable is placed into the pipe through a special coupling - nipple. However, this comes with disadvantages:
- due to the insertion of a tee into the sewer pipeline, its reliability decreases;
- the internal diameter of the pipe decreases;
- the likelihood of blockages increases;
- if the pipeline is installed with numerous transitions, bends, and also has a significant length, installation of the heating cable inside the pipe is very complicated and time-consuming.
In conclusion, I would like to say that high-quality heating of sewer pipes - important condition efficient work sewerage in the cold season. And although heating systems consume a certain amount of electricity, they can be economical, even in constant growth electricity prices. After all, the system can be supplemented with switches or controllers and thermostats that will monitor changes temperature regime in pipes and regulate energy consumption.
Freezing of organic matter and the formation of ice plugs that disrupt the functioning of the wastewater disposal structure are common phenomena on individual farms. There are many ways to get out of a difficult situation. But in most cases they are technologically complex, capital-intensive (additional thermal insulation) or unsafe (open fire). Not long ago, scientists and specialists, through comprehensive R&D, managed to find an innovative method to solve the problem. It consists of using a heating cable that provides uninterrupted operation sewerage and drainage systems at low temperatures.
The heating cable for heating sewer pipes is an electrical wire device with adjustable resistance. Its values depend on the external and internal temperatures of the pipeline.
The operation of the heating device is based on the transformation electrical energy to thermal.
Structurally, the heating cable for sewer pipes consists of cores, their protective sheath and outer cover.
- Veins – the main components of the product. The materials for their production are metal alloys with high electrical resistance values.
- Protective sheath of conductors . Made from polymer composites with dielectric properties. Equipped with a screen made of copper wire or solid aluminum foil.
- Polyvinyl chloride outer cover. Protects the cable from negative impact external environment. Neutral to aggressive chemical environments, does not allow the formation of microorganisms. Durable, reliable, elastic and flexible.
Cable products come in single, double and triple core versions. Single-core products are easy to manufacture and therefore affordable. But they are inferior to other species in terms of quality indicators. Yes, they have a lot electromagnetic radiation, which is missing from heating cables with two and three conductors.
Heating of the sewer is carried out due to the heat generated by the conductors when an electric current passes through them. The temperature effect spreads throughout the outer and inner parts of the drainage system.
Types of heating cables
Cables for heating sewer pipes are divided into two types:
- self-regulating
- resistive.
Self-regulating product . Usually consists of two cores copper alloys. They are connected to each other by a matrix. It is this element that plays the role of a heater and regulator. All structural units are reliably protected from external thermal and electromagnetic influences by a special film and screen. The structure is equipped with a braided coating that has optimal strength properties that can withstand severe physical and mechanical pressure.
Heating of sewer pipes is carried out using temperature differences. The conductor section located in the zone of low values has less resistance. Through the matrix, the current supply increases, the cable heats up and the pipe is heated.
If the pipe freezes, the self-regulating cable, when turned on, immediately begins to operate at full power until the structure warms up to the design temperature. When sensors, thermostats, and temperature relays are installed in the system, the cable is turned off and on automatically. In their absence, the heating device operates constantly, independently adjusting the power mode
The best qualities of a self-regulating heating cable for sewerage are associated with its cost-effectiveness. For stable operation of the structure, a power consumption of 150 W per 10 hours is considered sufficient. linear meters gutter With a pipeline length of 50 meters, energy costs will be 750 kW. This is less than the average air conditioner. The device has a 50-year operational period. The unique features of the product include its resistance to system overheating.
External heating of sewer pipes is done in two ways: laying the cable along the pipe and winding it in a spiral around the drain.
The heating cable for sewerage inside the pipe is installed through a saddle. An insert is mounted into it, through which the cable is inserted.
The use of self-heating units is gaining growing popularity among homeowners due to their reliability, safety and manufacturability. Their installation is not difficult. It is accessible to any person who does not have the proper qualifications, but is familiar with the basics and does not require special qualifications of the performer. Suitable for working with pipes with a diameter exceeding 40 mm.
Resistive heating cable. It can be single or double wire. In the case of a single core, the power supply must be connected to both ends. From a practical point of view, this is not entirely convenient. If the pipeline is long, a separate long phase line will be required. The likelihood of damage increases. The two-wire device is more popular. Structurally, it includes heating and current-carrying cores, core insulation, screen (braiding), and outer sheath.
The product is laid inside or on the surface of the pipeline. The cable is turned on and off automatically. The command is given by sensors located along the entire length of the sewer. When the temperature drops below the required level, the heating is turned on. Heat from the cable is transferred to the drainage system. Accordingly, shutdown occurs when the system enters normal mode.
Resistive cables are used for heating pipes not large diameter(up to 40 mm). Maximum effect achieved by combining cable and sewer thermal insulation.
The disadvantage of this type of device is that if the sensor does not respond, the structure may overheat and fail.
Advantages and disadvantages of laying cables inside and outside pipes
From a technological point of view, the external installation of cable lines does not pose any difficulties. Installation work are carried out much faster and with better quality, since the view of the view is facilitated. The main advantage is that with this option cleaning work in sewers using cables, scrapers and other tools are safe for the cable structure. Damage to the system is also easier to detect when heating cables are laid externally. Disadvantages: it requires heating not only the wastewater, but also the pipe itself. The system is not suitable if the pipes are made of heat-resistant products: reinforced concrete, asbestos concrete structures, polymer composite materials.
Heating cables for sewerage inside a pipe are more efficient. Have a high coefficient useful action. Organic elements in the pipe they warm up quickly, since self-heating processes take place in them.
When heated from the inside, sewer pipes have lower limits of sub-zero ambient temperatures. This is due to the fact that there is no need to warm up the pipes themselves.
Flaws: complex installation of sewer pipes from the inside, the need for large quantities viewing devices, the need for additional coverage protective elements due to constant exposure to aggressive chemical and aquatic environments, the difficulty of identifying faults and their localization.
conclusions
- Heating cables are becoming a necessary attribute of the sewer system of a private home. They ensure its uninterrupted functioning and comfortable life for homeowners and members of their families.
- When choosing heating products, you should pay attention to the climatic conditions of the region, the level of freezing groundwater specific area of the area.
- Heating cables installed inside the drain are more efficient and use less electricity.
- Self-regulating designs have best characteristics on reliability, safety and uninterrupted operation.
Heating of sewer pipes with a heating cable is used when the system is located in areas where the soil freezes. It is not always possible to extend the drain line below the mentioned level. This can be prevented by:
- swimmer;
- laid other communications and much more.
Therefore, there is a need to heat the sewer system. For this task, the industry offers a large number of insulation materials. All of them are excellent performance characteristics and high quality.
Also distinctive characteristic of these materials is their low cost. The most effective of the heat insulators is the heating cable for drain lines.
Heating inside the system
Heating cables inside sewer pipes have been used for quite some time. . It uses known property metal conductors, this is heating when electricity passes through them. At the same time, with increasing resistance, the heating level rises.
From the above, it becomes clear that the heating cable for sewer pipes must be equipped with good waterproofing, because it is constantly in water.
The cable that is laid inside is arranged like this:
- metal conductor for heating;
- conductors enclosed inside heat-resistant insulation;
- another layer of fluoroplastic insulation;
- copper screen;
- outer layer of insulation.
In addition, the device for broaching inside drainage structure, contains a temperature regulator. It prevents overheating of the mechanism and saves energy.
Advantages of sewer heating
Heating sewer pipes with a heating cable from the inside has whole line advantages:
- Wires that heat up from the inside make it possible to maintain the desired temperature level so that the liquid in the system does not freeze.
- High safety of cables pulled from the inside and their regulators.
- Such devices can be used not only from the inside, but also on the outside of the highway.
- Simple and convenient use.
- Possibility to save electricity due to automatic regulator.
The only drawback of devices installed from the inside is the dependence on the supply of electricity. For these reasons, additional sources have to be installed on important pipelines, which will come to the rescue if the main source is interrupted.
Types of devices that can be bought in Yakutsk
You can buy the following types of heating cable for sewer pipes in Yakutsk:
- Resistive.
- Self-regulating.
Resistive options that are offered in Yakutsk are divided into the following types:
- Linear.
- Zonal.
Linear type products generate heat when electrical energy hits the conductors. They can be single-core, or consist of several metal strands, which are often shaped like a spiral.
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To buy quality products from this line in Yakutsk, you need to know that they differ in type of application. Low-power types are recommended for installation on household pipelines.
ADVICE. Most often in country houses and cottages for heating sewer network use an option with a power of 50 watts per meter of pipe. For a small drainage structure this is quite enough.
For an important trunk route in Yakutsk, you can purchase a cable system with more high power, it will effectively protect pipes from freezing even in this cold region.
You need to understand that the heating power of the cable depends not only on the diameter, but also on its length. Since the climate in Yakutsk is cold, preference will have to be given to more powerful options, and this will affect electricity consumption.
Self-regulating heating wire
The information presented above makes it clear that, in winter time heating sewer pipes is simply necessary. For this, special devices are used.
A self-regulating heating cable for heating sewer pipes is distinguished by its ability to warm up or cool down depending on the ambient temperature. There is no need to apply any additional regulatory mechanisms.
Self-regulating heating at internal method installation are placed on drain networks with a volume of up to 50 mm, which cannot be reached directly.
A heating device in the middle of the line is installed along its entire length. For this, a stuffing box assembly is used, and all work is carried out in accordance with safety regulations.
Here are some quick conventions that you need to adhere to:
- When inserting, all parts of the edges and threads of the fittings should be covered.
- Do not damage the outer shell of the heating device.
- The cable installation location must be marked on the outside of the trunk.
- The length of the heat pipeline must correspond to the length of the main line.
- Pass the self-regulating heating device through shut-off valves not allowed.
This type of installation allows you to achieve the most high efficiency heating, and it is used for structures put into operation. Before this, precise measurements are taken of the area that will be heated.
Self-regulating wire for protection against short circuits equipped with a device automatic shutdown. To the above, it must be added that a self-regulating heater inside the network is not recommended for highways, servers drinking water , but for drainage systems this option is very suitable.
Features of external installation
A self-regulating heating cable for heating sewer pipes is very often placed on the outer part of the main.
There are several options for this work:
- Laying in the shape of a wavy line.
- Placement along the pipe product straight.
- Several heating wires running parallel to the main line.
- In the shape of a spiral.
- On elbows and taps when installing a heat pipe, combine the previous methods at the same time.
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A self-regulating cable when pulled externally requires constant monitoring for damage. The heating wire is attached to the top of the sewer pipes using adhesive tape. Allowed to use only special tape made of aluminum, but plastic tape is not allowed for this task.
At first, the device for heating the drain network is fixed with small pieces of tape. They are placed at a distance of 0.3 m from one another. Then aluminum tape is passed along the entire length of the heat pipe. In this way, a strong attachment is created to the upper part of the highway.
ADVICE. The minimum bend volume for a heating wire is equal to the sum of its six volumes.
If this installation is carried out on plastic system, it must first be glued with adhesive tape; you can also take aluminum foil for this task. This will allow the heat to be evenly distributed throughout the entire pipeline area.
After installing the heating device, it is recommended to thermally insulate the pipe system using special materials.
Heating sewer pipes with a heating cable is easy to perform effectively, thanks to such manufacturers as Raychem, Esto, Lavita, etc. And the products of the Devi company received the highest ratings from the craftsmen. All of them help to extend the life of the system, because this directly depends on the quality of heating in the cold winter.
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When water freezes in pipes, it causes great concern to any owner. Moreover, various consequences may be associated with this. Sometimes everything is limited only by turning off the water supply. And sometimes the safety margin of the pipes is not enough, as a result of which they rupture under the influence of ice. However, thanks modern technologies Today it is possible to prevent unpleasant situations.
As effective means You can suggest using a heating cable for sewer and water supply systems.
Operating principle of the heating cable
Such cables are represented by core wire, the heating of which is provided by electricity at the time of arrival to him. Further heat begins to spread in all directions, causing the ice to turn into water. WITH outside Protection for such a cable is provided by seamless insulation. Connected to the heating wire electrical cable, for the fastening of which laser soldering is used. Moreover, the end of the latter has plug. To ensure operation, the plug must be connected to a household electrical outlet.
If we proceed from such a parameter as the heating control option, then all heating wires can be classified into two types:
- resistive;
- self-regulating.
Moreover, each of them can be used to heat water. At the same time, they have their own characteristics.
Resistive heating cable
It is distinguished by the presence of resistance, the value of which remains unchanged all the time. When such a cable is connected, heat generation occurs without interruption within a strictly specified temperature range, which is usually from 5 to 13 degrees Celsius. Its use allows you to effectively protect pipes from ice at any time, which never remains solid in winter.
Self-regulating heating cable
This cable is characterized by a more complex operating principle. It is distinguished by the presence of dynamic resistance, the value of which can increase or decrease depending on the temperature of the water. Thus, heat begins to be released in greater or lesser quantities. It is due to the presence of a self-regulating operating mechanism that such a cable prevents overheating and burnout.
Thermal relay
In order for a cable to successfully cope with its task, it is usually used with additional devices. This is a thermal relay with a temperature sensor, the main purpose of which is to automatic switching on in case of temperature drop. Its other function is to disconnect the cable, which occurs at the moment when the temperature rises to the upper permissible value.
To ensure stable operation of such a device, it is important to choose the right location for installing the temperature sensor. An unacceptable location for this element is the area next to the heating cable. It is recommended to select an area on the opposite side of the pipe to place the sensor. It must be borne in mind that the use of this heating in combination with a thermal relay can lead to a reduction in the service life of the former. A contributing factor to this is the increase in resource consumption due to the frequent switching on and off of heating.
Installation
The place of its installation can be external and inner part pipes.
Outdoor installation
This installation option is easy to implement. The essence of the work comes down to attaching the heating cable to the pipe, for which it is used duct tape or metal grid. It is also possible to fix the cable in a straight line or in the form of a spiral. When using the latter method, it is possible to achieve increased water heating. Even an ordinary owner can cope with the task of external installation, since no special skills or equipment are required.
Internal installation
If the owner has chosen the internal installation option, it is best to involve qualified specialists in performing this work. The essence of the work comes down to inserting a special tee into the pipe, through which the wire is inserted inside through a special coupling.
Care must be taken to ensure sealing is performed. In addition to this, when trying to insert the cord through the coupling, you must pay attention to ensure that the coating of the heating cable is not damaged by the thread. To create heating wires, environmentally friendly materials are used, due to which their use does not in any way affect the quality of drinking water.
For gutters
A special feature of heating wires for gutters is that they are designed for use in a water supply system with increased linear power. The assembly of drains is carried out using large diameter pipes. In addition to this, there is no need for their insulation.
Convert ice masses large sizes This is possible if you have a heating cord, the power rating of which should be 30-50 watts per meter. It will not increase the efficiency of the cable and its thermal relay equipment. Include similar heating should not be used together with automation if there is a need to combat ice covering the roof structure and gutters.
Heating cable for sewer system
The problem of freezing is typical for sewer pipes. For this reason, their insulation should be carried out using the same technology as water pipes. True, here one thing should be remembered important point- they are intended for use in systems with increased linear power, which is equal to 30-33 Watts per meter. The change in power is due to the peculiarities of the operation of sewerage pipes and the low frequency of their use. It is quite logical that the option indoor installation not suitable for sewerage systems.
Other heating cable applications
Heating cold water is not the only function that heating wires perform. They can also be beneficial if used for:
- hot water heating
- heating salt water.
On sale you can find heating cords with higher linear power, which are most common in industrial enterprises.
To lay or not
To understand whether there is a need to use a heating wire, you should based on several parameters:
Cable power
To work effectively in living conditions owners should consider wires with linear power ratings of the order of 9-18 watts per meter. For internal version installation, it is allowed to use a cable of lower power. If you select external method installation, then you will have to face more significant costs when organizing heating. For this reason, a higher power cable is used as a solution to the problem.
Duration of work
All companies that produce heating cables offer various warranty periods for their products. Individual products may have a warranty ranging from 5 to 20 or even 40 years. Compliance with installation technology allows you to count on the fact that the heating cable will be able to work for a long time. First of all, this applies to situations where it is used external installation method.
During operation of the heating cable, the owner will encounter less energy consumption than in the case of repairing a failed sewer or water supply system. If a resistive heating cable with a length of 20 m and a power of 9 watts is run continuously throughout the day, this will result in the consumption of about 4.3 kilowatt-hours of electricity. You can save on cable use if you supplement it with a device such as a thermal relay or choose a self-regulating cable.
Mistakes and prejudices
Most often, problems with the operation of the heating wire are associated with the point of view according to which plumbing system can do without conventional insulation. The main purpose of a heating cable is to prevent emergency situations that can happen to the plumbing system. However, it should not be considered as an alternative to a thermal insulation system.
It is also undesirable to leave the heating cable on without interruption when winter comes. This will lead to a serious increase in energy costs. You should resort to such a device as a heating cable only when the need for it arises. You also need to monitor the weather forecast: if weather forecasters promise a sharp cold snap, it is recommended to turn on the heating cable in advance.
Conclusion
A heating cable can positively affect the operation of the entire sewer system. Its main advantage is to prevent situations with the formation of ice masses inside the pipes. However, there are still some peculiarities in relation to correct use and choice this element. When purchasing this or that type of cable, you should take into account the features of its operation and installation. Therefore, if you decide to choose a resistive heating cable, you can easily install it yourself.
In the case of using a self-regulating cable, you should not rely on your knowledge and skills, since such arrogance can only negatively affect the operation of the heating cable, and, as a consequence, the functioning of the water supply and sewerage systems. Such work should be performed by specialists who have the necessary experience and special equipment. After installation, heating cables must be used correctly. Ideally, it is used only in emergency situations when severe frosts are expected. In other cases, the problem of protecting pipes from freezing should be solved by properly performed insulation.
