Water-heating water-tube boilers of the KV-GM series are designed for heating and hot water supply of housing and communal services and industrial facilities. A boiler is a heating unit that heats water from heating networks directly or through heat exchangers. The boiler is designed to heat water from temperature charts 95\70,115\70,150\70 s constant flow water through the boiler within the load control range. The load control range is 30–100%. Boilers operate on natural gas, diesel fuel, fuel oil, solid fuel.
Design
The KV-GM boiler is a water-heating water-tube gas-tight boiler, with a horizontal or vertical arrangement of heating surfaces. Boilers by motion flue gases are single-pass (span), two-pass, three-pass. The boiler design includes a combustion chamber and a convective heating surface located behind the combustion chamber. The combustion chamber of the boiler and the convective part are shielded by membrane panels assembled from pipes with a diameter of 51x4.0 mm, with welded spacers that ensure gas tightness of the boiler for operation under pressurization. The convective heating surface consists of a certain number of packets. Each package is assembled from horizontally or vertically located screens made of U-shaped pipes with a diameter of 28x3 mm. Drains and air vents are made of pipes with a diameter of 28x3 mm. The boiler design provides the necessary hatches and peepholes for operating the boiler. The gas-tight design of the boiler allows the use of lightweight thermal insulation 50 mm thick with decorative cladding. It is also possible to use boilers for working with vacuum.
Burner devices
KV-GM boilers are used with modern automated burner devices from leading European and Russian manufacturers, approved for use by the boiler manufacturer.
Advantages
- High efficiency– is ensured by the design of the boilers and is characterized by a consistently high value at different loads.
- The boilers are gas-tight– these are stable characteristics of the boiler during long-term operation.
- Low NOx emissions– are guaranteed by the design of the combustion chamber and efficient combustion of fuel on modern automated burner devices.
- Quick boiler output to the specified mode– ensured by a small volume of water in the boiler and high speeds of water movement in the pipes.
- Reliable and simple design boilers, long service life– the requirements and operating experience of Russian heating networks are taken into account; the standard service life of boilers is 20 years.
- Possibility of using boilers in open circuits heat supply– is an important advantage of water tube boilers, in contrast to fire tube boilers.
- High maintainability– this is accessibility to any boiler unit, which allows you to quickly and easily at the lowest cost carry out necessary repairs.
- Block supply of boilers – high quality manufacturing boilers in the factory, significantly reduces costs and time for carrying out installation work, transportation to the construction site.
- Wide standard range of KV-GM boilers– allows you to correctly select capacities and competently carry out projects for quarterly and district boiler houses, as well as reconstruct existing boiler houses with the replacement of boilers from other manufacturers.
- Optimal price/quality ratio of boilers– allows you to significantly reduce and optimize capital costs for the construction of district heating sources.
- Use of boilers with burners from leading European and Russian manufacturers.
The boilers have modern and reliable design, are mass-produced by the manufacturer and supplied to customers as:
- Single-pass (span) for flue gases
- 13 standard sizes / 22 modifications
- Temperature charts 95\70 °С, 115\70 °С, 150\70 °С
- All boilers are certified according to the GOST R system and have permission for use by Rostechnadzor of the Russian Federation
- The standard service life is at least 20 years
Boilers of the KV-GM (KV-GM) series produced by the Biysk Boiler Plant are designed to obtain hot water with a nominal boiler outlet temperature of 150°C used in the system district heating for the needs of heating and hot water supply of industrial and household use, as well as for technological purposes of enterprises in various industries.
The boilers are designed to operate in closed system heat supply with forced circulation water.
Water-tube boilers, horizontal layout, consisting of: for boilers KV-GM-4.65-150, KV-GM-7.56-150 from a pipe system; for boilers KV-GM-11.63-150; KV-GM-23.26-150, KV-GM-35-150 from two blocks - combustion and convective, supplied in bulk or assembled. Fittings and accessories included in the boiler kit.
- Distinctive features of KV-GM:
- delivery of the boiler in advanced factory readiness ensures the quality of the product and allows reducing the installation time of the boiler;
- when boilers are supplied in bulk, technological openings in the boiler house building for installation of equipment are not required, and the quality of the product as a whole is ensured during installation and is controlled by the customer at the boiler installation site;
- lining of boilers, carried out at the installation site, significantly reduces the weight of the boiler delivery unit and the time required for factory production;
- standardized units and parts used in this factory series of boilers allow them to be used on similar hot water boilers from other manufacturers;
- blocks (with minimal reconstruction) can be used with different burners;
- a device for the return of entrainment and sharp blast in boilers provides more complete fuel burnout, and, consequently, lower fuel consumption and a reduction in CO emissions, not exceeding permissible values;
- boilers are durable, repairable, easy to maintain, have access for inspection, repair and cleaning of pipes;
- boilers with a burner operate in automatic mode, having the ability to adjust parameters and stability of load carrying;
- The boiler design is designed for installation in areas with seismicity of 9 points inclusive.
Historical reference
The Biysk Boiler Plant has mastered the production of boilers of the KV-GM series with a capacity of 4.0; 7.56; 11.63; 23.26 and 35 MW and pressure 1.0; 1.35 and 2.25 MPa since 1959.
In the late 60s and early 70s of the 20th century, a sharp industrial rise and rapid development of housing construction began in the country. There was a growing need to quickly increase thermal capacity, both at existing thermal power plants and at the construction of new heating plants.
The optimal solution to this problem was the installation of relatively inexpensive peak water boilers included in the district heating network and designed to cover short-term peaks in heating load, as well as as the main source of heat supply throughout the entire period. heating season and to cover the need for summer hot water supply.
To achieve this task, a standard size range of a series of peak heating hot water boilers with a heating capacity of 30, 50, 100 and 180 Gcal/h for burning gas and fuel oil was selected.
Technical and working designs were developed by VTI, the Moscow branch of the Orgenergostroy Institute and BiKZ. Since 1959, the Biysk Boiler Plant began producing boilers with a capacity of 100 and 180 Gcal/h. Subsequently, the production of this series of boilers was transferred to other boiler plants of the USSR, as well as to Czechoslovakia and Romania.
Simultaneously with high-power boilers, according to the patent of BiKZ, TsKTI and DKZ, a series of water heating boilers of the KV-GM type with a heating capacity of 10.0 was developed; 20.0; 30.0; 50.0 Gcal/h. The boilers were mass-produced and produced in large quantities.
Currently, the Biysk Boiler Plant produces boilers of the KV-TS, KV-GM and PTVM series, as well as boiler and auxiliary equipment for them: fans, smoke exhausters, economizers, water treatment equipment.
The main elements of the KV-GM-4.65-150 boiler are: a pipe system that combines a combustion chamber and a convective heating surface and a gas-oil burner.
The KV-GM-4.65-150 and KV-GM-7.56-150 boilers have a single profile and differ only in the depths of the combustion chamber and the convective flue. The combustion chamber has a horizontal layout, shielded by pipes Ø 60x3 mm, included in collectors Ø 159x7 mm.
The convective heating surface, located in a vertical, fully shielded flue, consists of U-shaped screens made of Ø 28x3 pipes.
The KV-GM-4.65-150 boiler is equipped with one gas-oil burner RGMG-4. The burner is installed on the boiler air box, which is attached to the front screen to the shield. Maintenance of the burner device, its description and technical characteristics are given in the documentation supplied with the burner devices.
Boilers operating on fuel oil are equipped with a gas pulse cleaning device (GCP) to remove external deposits from the pipes of the convective heating surface. The operating principle of gas pulse cleaning is based on the impact on external deposits of directed shock and acoustic waves generated due to the explosive combustion of a gas-air mixture.
The KV-GM-4.65-150 boiler does not have a supporting frame. The pipe system has supports welded to the lower manifolds. The supports located at the junction of the convective and combustion chambers are motionless.
The KV-GM-4.65-150 boiler is made in lightweight pipe lining and is supplied in one transportable block or in bulk.
Technical characteristics of the boiler KV-GM-4.65-150
| Characteristic | KV-GM-4.65-150 (KV-GM-4-150) |
| Heating capacity, MW (Gcal/h) | 4,65 (4,0) |
| Estimated (excess) water pressure at the boiler inlet, MPa | 0,16 |
| Water temperature at the boiler inlet, ˚С | 70 |
| Water temperature at the boiler outlet, ˚С | 150 |
| Hydraulic resistance, no more than, MPa | 0,25 |
| Water consumption, m3/h | 49,5 |
| Fuel consumption, m3/h (gas)/kg/h (fuel oil) | 530/500 |
| Boiler efficiency, %, not less (gas/fuel oil) | 92,2/86,4 |
| Aerodynamic resistance of the boiler, Pa | 330 |
| Flue gas temperature, no more than 0C | 230 |
| Excess air coefficient, no more | 1,2 |
| Dimensions of transportable unit, LxBxH, mm | 5000x2600x3500 |
| Layout dimensions, LxBxH, mm | 5000x2600x3500 |
| Boiler weight without firebox, kg | 8055 |
| Boiler complete set with burners |
Boilers of the KVGM (KV-GM) series.
- water-heating gas-oil boiler.
Boilers of this brand are intended for heating and hot water supply of industrial, public and residential buildings. They operate on gas or liquid (diesel) fuel. Depending on the type of fuel, boilers are equipped with gas, liquid fuel or combined burners.
Hot water boilers“KVGM” series are designed to produce hot water with a pressure of 0.6 (6.0) MPa (kgf/cm2) and a nominal temperature of 95 -115 °C.
Boiler type: water-tube, horizontal with forced circulation.
Boilers of the KVGM (KV-GM) series have, in particular, the following modifications: KVGM-10, KVGM-20, KVGM-30, KVGM-50, KVGM-100, KVGM-180. As you can see, these modifications repeat the PTVM series.
In the fuel and energy complex of Moscow, boilers of the KVGM-10, 20 series are installed at KTS, KVGM-100 - at RTS and KVGM-180 at thermal power plants.
KVGM-10 installed on KTS-54 and KTS Nekrasovka,
- heat load (Gcal/hour) - 7.65 (KTS Nekrasovka).
- year of installation from 1973 (KTS-54) to 1996 (KTS-54)
- total number of boilers - 8
KVGM-20- 7 boilers installed on KTS-11, KTS-18, KTS-54,
- heat load (Gcal/hour) from 14.4 (KTS-24) to 8.3 (KTS-20)
- year of installation from 1972 (KTS-24) to 1989 (KTS-18)
KVGM-100 installed on RTS
- heat load (Gcal/hour) varies from 83.1 to 12.6 (RTS Mitino)
- year of installation from 1991 (RTS Mitino) to 1997 (RTS-Zhulebino)
- total number of boilers - 24
KVGM-180(180-150) installed at the thermal power plant
- heat load (Gcal/hour) from 137 (CHP-26) to 77.7 (CHP-11)
- year of installation from 1983 (CHP-26) to 1997 (CHP-25)
- total number of boilers - 18
Specifications gas-oil water heating boilers KVGM
| Boiler brand | KV-GM 1.25-115 | KV-GM 2.5-115 | KV-GM 3.5-115 | KV-GM 4.4-115 |
|---|---|---|---|---|
| Nominal heating capacity, MW (Gcal/hour) | 1,25(1,07) | 2,5(2,15) | 3,5(3,0) | 4,4(3,79) |
| Heated area, m2 | 10800 | 21500 | 30000 | 37900 |
| Type of fuel | Natural gas GOST 5542-87 Emergency fuel oil M100 GOST 10585-75 |
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| Dimensions of the boiler assembly, mm | ||||
| - length | 3978 | 4550 | 5510 | 5370 |
| - width | 2230 | 2610 | 2625 | 2911 |
| - height | 1872 | 1818 | 2470 | 2350 |
| Boiler weight, kg | 3300 | 6200 | 6500 | 7500 |
| Burner type, quantity | RGMG1 | GM-2.51 | GM-4.51 | GM-4.51 |
| Smoke exhauster brand, quantity | D-3.5M1 | D-5Zh1 | D-5Zh1 | D-6.31 |
| Fan brand | VTs-14-46-2.51 | VTs-14-46-2.51 | VTs-14-46-41 | VTs-14-46-41 |
| Automation type | AVK-01 BUK-MP-011 | |||
| Electric single-turn mechanism | MEO3 | |||
| Valve block (kit) | S3N-4-30 (flange with filter) | |||
| Boiler brand | KV-GM-4.65-150 | KV-GM-4.65-115 | KV-GM-7.56-150 |
|---|---|---|---|
| Nominal heating capacity, MW | 4,65 | 4,65 | 7,56 |
| Type of fuel: | gas GOST 5542-87/fuel oil | gas | gas GOST 5542-87/fuel oil |
| Working water pressure, MPa | 1-1,56 | 1-1,56 | 1-1,56 |
| Inlet water temperature, °C | 70 | 70 | 70 |
| Outlet water temperature, °C | 150 | 115 | 150 |
| Hydraulic resistance, MPa | 0,12 | ||
| Heat output control range in relation to nominal, % | 20-100 | ||
| Boiler weight without burner, kg | 25000 | 25000 | 26260 |
| Dimensions: | |||
| - length, mm | 5200 | 5200 | 6500 |
| - width, mm | 3000 | 3000 | 3000 |
| - height, mm | 3900 | 3900 | 5000 |
| Water consumption, t/h | 49,5 | 88,7 | 80 |
| Fuel consumption, m3/h, gas/fuel oil | 530/500 | 530 | 850/800 |
| Mean time between failures, hour, not less | 5000 | ||
| Average service life before write-off, years, not less | 20 | ||
| Boiler efficiency, % not less, gas/fuel oil | 90,5/86,3 | 90,67 | 88,3/87,0 |
| Specific emission of nitrogen oxides, mg/m3, no more, gas/fuel oil | 230/340 | n.d. | |
| Specific emission of carbon monoxide, mg/m3, no more, gas/fuel oil | 15/20 | n.d. | |
| Equivalent noise level in the service area, dBa, no more | 80 | ||
| Outdoor temperature (isolated) boiler heating surface, °C | 45 | ||
| Temperature of flue gases, °C, no more than, gas/fuel oil | 150/245 | 154,4 | 153/245 |
| Total aerodynamic drag, kg/m2, gas/fuel oil | 22,1/25,8 | 14,9 | 22,9/31,4 |
| Boiler brand | KV-GM-10-150 | KV-GM-20-150 | KV-GM-30-150 | KV-GM-50-150 | KV-GM-100-150 | |
|---|---|---|---|---|---|---|
| Heating capacity, Gcal/h / (MW) | 10 / (11,63) | 20 / (23,26) | 30 / (35) | 50 / (58) | 100 / (116) | |
| Design pressure, kgf/cm2 g. | 25 | 25 | 25 | - | - | |
| Working pressure, kgf/cm2, not less | 10,3 | 10,3 | 10,3 | - | - | |
| Water temperature, °C | ||||||
| - at the entrance, no less | 70 | 70 | 70 | 70 | 70 | |
| - at the output, no less | 150 | 150 | 150 | 150 | 150 | |
| Water consumption through the boiler, t/h / peak | 123,5 | 247 | 370 | 618 / 1230 | 1235 / 2460 | |
| Hydraulic resistance of the boiler, kgf/cm2, no more | 2,5 | 2,5 | 2,5 | |||
| Overall dimensions, mm | ||||||
| - highest mark | 7300 | 7300 | 7300 | 13400 | 13400 | |
| - width | 3200 | 3200 | 3200 | 5700 | 5700 | |
| - depth | 6500 | 9700 | 11 800 | 5900 | 9558 | |
| Weight of boiler metal, t | 18,4 | 26,2 | 32,4 - 35 | 82 | 142,4 | |
| Burner - brand, quantity | RGMG-10 1 piece | RGMG-20 1 piece | RGMG-30 1 piece | RGMG-20 2pcs | RGMG-30 3pcs | |
| Source - Installation company Teploenergostroy. | ||||||
Apparently the KVGM boiler is further development boiler PTVM. At least it is newer, since in Moscow the PTVM has been installed since 1958, and the KVGM since 1972.
It is interesting to watch the discussion among experts on comparative characteristics boilers PTVM and KVGM.
Boilers of the KVGM type were once produced in the Soviet Union by the Dorogobuzh Boiler Plant in large series. These boilers are still produced today by several enterprises.
This design has proven its right to life both from a technical point of view and from the point of view of the possibility of its implementation in the heat and energy market.
However, boilers operating for a long time are exposed to corrosion and erosion, resulting in the need to replace individual elements. In some cases, modernization and reconstruction of boilers of this type makes it possible to extend their service life for an indefinitely long time.
On the page Repair and modernization of PTVM and KVGM boilers a list of organizations performing similar work is presented.
An even more advanced series of boilers of this type are boilers of the brand
