Device, principle of operation and technical characteristics of DKVR boilers

Efficient home heating is essential for both economy and comfort. The boiler is one of the most important parts of a heating system since it is responsible for heating and providing hot water for household purposes. DKVR boilers are particularly noteworthy among the different types of boilers available because of their dependability and efficiency. We’ll examine the DKVR boiler’s mechanism, working principle, and technical details in this post to help understand how it helps keep our houses toasty and comfortable.

Steam boilers, commonly referred to as DKVR boilers, find extensive applications in commercial, industrial, and residential settings. Their popularity is a result of their capacity to produce steam effectively, which can then be used to heat the entire building. Instead of heating water directly as traditional water boilers do, DKVR boilers use the heat generated by burning fuel to turn water into steam. Heat is then transferred to the surrounding area by means of this steam being circulated through pipes to radiators or underfloor heating systems.

The fundamental working principle of DKVR boilers is the application of heat to turn water into steam. Typically, these boilers have a combustion chamber filled with fuel—coal, oil, or natural gas—that is burned to produce heat. The water in the boiler’s reservoir becomes hotter due to the heat generated, evaporating and condensing into steam. After being pressurized, the steam is distributed via distribution pipes to different areas of the building, where it releases thermal energy and warms the surrounding area.

The efficiency of DKVR boilers in turning fuel into heat is one of their primary technical features. With their optimized performance and minimal waste, these boilers are made to transfer as much heat energy from the combustion process to the water as possible. DKVR boilers also have safety features that guard against overheating and pressure buildup, guaranteeing safe operation for the duration of the boiler’s life.

Device A DKVR boiler is a type of heating equipment used in residential and industrial buildings to generate hot water or steam for heating purposes.
Principle of operation The principle of operation of a DKVR boiler involves burning fuel, usually natural gas or oil, to heat water or generate steam. The heated water or steam is then circulated through pipes to provide heat to the building.
Technical characteristics DKVR boilers typically have a capacity ranging from a few hundred kilowatts to several megawatts. They are designed to operate efficiently and reliably, with features such as automatic temperature control and safety systems to prevent overheating or pressure buildup.

In the world of heating and insulating homes, understanding the workings of DKVR boilers is key. These boilers are central to many heating systems, offering efficient heat production with their unique design and operation principles. DKVR boilers utilize a combustion chamber where fuel, like gas or oil, burns, heating water or producing steam. This heated water or steam then circulates through pipes to provide warmth to various parts of the house. One of their standout features is their versatility, capable of accommodating different types of fuel and adjusting to varying heating demands. Technical specifications of DKVR boilers include factors like heating capacity, efficiency, and safety features, all essential considerations for homeowners looking to optimize their heating systems. Understanding how DKVR boilers work and their technical aspects is crucial for anyone interested in efficient home heating and insulation.

Decoding of steam boiler DKVR

This equipment is manufactured in various versions. The acronym DKVR stands for a reconstructed two-drum water tube boiler.

The tons per hour of steam production are indicated by the first few digits. The temperature of the steam at superheating is indicated by the third number in the name, if there is a superheater, and the second number describes steam pressure.

Take the boiler DKVR 10-13-250, for instance. Ten is the amount of steam produced in an hour, thirteen is the working body pressure in kgf/, and two hundred and fifty is the superheater temperature in degrees Celsius.

If the letter C appears after the last number, it indicates that the layer combustion method is offered. The absence of the final third number indicates that the boiler does not have a superheater and that the steam is produced saturated.

Advantages and disadvantages

These boilers differ from other units of the same type thanks to a number of advantages. The primary benefit is the large steam capacity. This apparatus functions with remarkable efficacy even at low pressures, ranging from 0.7 to 1.4 MPa. During operation, treated water is not required.

Numerous benefits associated with boilers:

  • ability to switch to hot-water mode for heating;
  • any fuel is used;
  • robust design;
  • efficiency up to 92%;
  • economical in operation and maintenance;
  • convenient installation in any boiler room due to the prefabricated design;
  • uncomplicated connection and commissioning;
  • wide range of steam capacity parameters;
  • high maintainability.

The only drawback that can be identified is that during operation, the suction of cold air in gas ducts from a combustion chamber to an extreme heating surface is overestimated (Da = 0,254-0,35).

Device DKVR and the principle of operation

This manufacturer makes a variety of equipment, with varying steam pressure and hourly production capacities. Every modification has two drums (separators) installed.

Two additional types—long and short—are determined by the size of the upper drum. Modernized models from 10 to 35 t/h are produced with a short drum, while older boilers up to 10 t/h are outfitted with a long upper separator. The range of equipment available for DKVR boilers varies based on the resources used. The drums have an inner wall diameter of one meter and are made of steel.

Because of the size of the combustion chamber, the lower drum is shorter than the upper drum. The furnace is made up of multiple screens and a strong boiling pipe made of 51×2.5 mm pipes. There are two sections of the furnace separated by masonry. The flue gases heat the convection bundle tubes as they pass through two gas ducts made of brick and cast iron partitions. Subsequently, they exit the boiler via a vent at its rear.

The structure that forms the side heating screens is made up of sixteen pipes connecting the upper drum to the front collectors. Boiling tubes are used to connect the upper and lower separators at the back of the boiler. A sizable convective heating zone is produced in this manner. A drain valve is integrated into the steam cooler on the connecting wires to regulate the amount of steam. [ The pipes are separated in all directions by 110 mm. The lower separator and manifold are connected via bypass pipes. The upper one is filled to a certain level with makeup water. The water then flows downhill into the manifolds from that point.

The mixture of water and steam then rises from the side screens into the drum. This scheme forms two circuits of the working body circulation. There is also a third circuit, it is formed by the two drums and the convection bundle.
Water descends from the top, and then after heating the mixture of water and steam flows back through the heated pipeline, where these media are separated. In order to get rid of excessive salt and water inclusions it is envisaged to use a separation device.
For the formation of superheated steam it is envisaged to install a steam superheater. Structurally it is located instead of part of the boiling bundle pipes, behind the third row. This device in conditions of pressure 1.4 MPa and temperature 250 ° C is made in the form of a vertical loop, and under the condition of 2.4 MPa – from several pipes 32×3 mm.

Technical characteristics

It is important to remember that boiler characteristics vary depending on the fuel used in addition to performance differences.

There are many different models of manufactured equipment with varying capacities, designs, purposes, and fuel types. Here are some tables that compare the specifications of boilers operating at 13 bar pressure without a steam superheater and using various fuels.

Features of boilers powered by gas and/or oil:

Features of boilers powered by solid fuel, such as coal:

Boilers that use wood fuel (waste, husk, or wood peat) have certain characteristics.

DKVR scheme

Notwithstanding variations in design, every DKVR includes:

  • upper separator (long);
  • bottom separator (short);
  • combustion chamber;
  • convective bundle;
  • make-up pipes;
  • blowing device;
  • brickwork;
  • collectors;
  • combustion chamber;
  • technical devices for maintenance.

Boiler configuration

Every model has pipes connecting drums to create a convection bundle. DKVR drums have gaps in their technology that need to be fixed. The combustion chamber with screens, which includes partitions dividing the common area into the furnace and afterburning chamber—where the chemical underburning is reduced—is a crucial component of the apparatus.

A steam superheater is an optional feature; in this example, some of the circulation pipes are missing. These devices are manufactured in accordance with a specific standard, and the number of heat exchangers varies based on the equipment’s capacity.

Boilers have water economizers to make use of the thermal energy in the flue gases. Cast iron or steel are two possible materials for their construction.

Apart from the primary components of the boiler, it is furnished with:

  • safety valve for the boiler (2 pcs.);
  • pressure gauges;
  • shut-off elements and water levels;
  • purge valves;
  • holding valves;
  • steam extraction valves;
  • drain valves in the bottom separator;
  • valves for the introduction of chemical reagents;
  • vapor sampling valves;
  • documentation drawings.

Technological devices are also included in every model for easy maintenance. For DKVR boilers, burners must be bought separately.

Anyone aiming to maximize their home’s heating system must be familiar with the specifics of DKVR boilers. These boilers, which are renowned for their dependability and efficiency, work on a simple principle: they heat water that is circulated through a network of pipes by burning fuel. Afterwards, the house’s various rooms are warmed by this heated water, guaranteeing a cozy interior climate even in the winter.

The efficient conversion of fuel into heat energy is one of the primary technical features of DKVR boilers. In the long term, this efficiency results in cost savings for homeowners in addition to assisting in the reduction of energy consumption. Furthermore, these boilers are available in a range of sizes and configurations to accommodate diverse heating requirements, be it for a modest residential property or a larger commercial structure.

Furthermore, DKVR boilers are made to be durable and can endure the demands of continuous operation without sacrificing efficiency. Because of its dependability, homeowners can rest easy knowing that their heating system can withstand daily use demands without experiencing frequent malfunctions or breakdowns.

Because of their standardized components and user-friendly design, DKVR boilers are relatively simple to install and maintain. However, to guarantee optimum performance and safety, it’s imperative to enlist the knowledge of certified professionals for installation and routine maintenance.

In summary, DKVR boilers combine efficiency, longevity, and ease of maintenance to provide a dependable solution for heating and insulation needs. Homeowners can improve their home’s heating system and ensure long-term comfort and cost-effectiveness by having a thorough understanding of their device, operating principle, and technical features.

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Operation of DKVR boiler

Device and principle of operation of the boiler DKVR

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Sergey Ivanov

I like to help people create comfort and comfort in their homes. I share my experience and knowledge in articles so that you can make the right choice of a heating and insulation system for your home.

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