3. Main and auxiliary equipment
2.3.1. The calculation and selection of equipment must be made in accordance with
with SNiP II-35-76.
2.3.2. As heat sources in rooftop boilers,
use factory-ready automated heat generators with
coolant - water, temperature up to 95 °C and pressure up to 1.0 MPa.
2.3.3. In order to reduce the total power of heat generators
it is allowed to provide for the associated regulation of heating loads and
hot water supply, taking into account the storage properties of the heated building.
If there are several boiler houses on the roof of the building, it is recommended
combine them according to the coolant in order to reserve the heat supply in case of an emergency
one of the boilers.
2.3.4. When selecting circulation pumps, it is necessary to provide
measures to reduce noise and vibration to acceptable limits.
2. Operation of internal gas pipelines and gas equipment
3.2.1. Disconnection from the existing gas pipeline with the installation of a plug
instruments and apparatus that are operated with a gas leak are subject to
defective safety automation, chimneys, ventilation ducts and
broken chimney caps.
3.2.2. In the event of alarms, the gas supply to the heat generators must
be immediately terminated by the action of protections.
Gas burners must operate stably without separation and flashover of the torch
in the range of regulation of the thermal load of the heat generator.
3.2.3. Heat generators and ignition pipelines must be disconnected from
gas pipelines with the installation of plugs after shutoff valves before repair
gas equipment, inspection and repair of furnaces or gas ducts when withdrawing from
operation of a certain number of heat generators or seasonal heat generators
actions.
The gas ducts of heat generators taken out for repair must be disconnected from
a common gas duct with the help of blind gates or partitions.
3.2.4. Shut-off valves on the purge gas pipeline after turning off the heat generators
must remain in the open position at all times.
3.2.5. The procedure for switching on heat generators to work (after they have been stopped)
must be determined by the production instructions, while the gas start must
carried out only if there are documents confirming the implementation
the following works:
testing knowledge of instructions
service personnel;
current repair of gas
equipment and automation systems;
gas duct cleaning, inspection
their serviceability, as well as ventilation systems;
elimination of all faults.
3.2.6. Before launch
heat generators after a downtime of more than 3 days should be
checked the serviceability and readiness to turn on the draft mechanisms
heat generator, its auxiliary equipment, measuring instruments and remote
control of fittings and mechanisms, autoregulators, as well as carried out
checking the operability of protections, interlocks, means of operational communication and
checking the operation of the slam-shut.
Downtime less than 3 days
protection, interlocks and measuring instruments are subject to verification.
Furnaces and flues before start-up
heat generators to work must be ventilated. Airing time
is set by the instruction, the end is determined using a gas indicator.
Shut-off valve in front
the burner on the gas pipeline may only be opened after the ignition switch has been turned on.
device or bringing a burning igniter to it.
Filling gas pipelines
heat generators with gas should be produced with smoke exhausters switched on,
blower fans in the sequence specified in the production
instructions.
3.2.7. Internal gas pipelines
and heat generators must be serviced at least once
per month, current repairs - at least 1 time per year.
3.2.8. Chimneys are subject to
periodic inspection and cleaning:
when performing repairs
heat generators;
in violation of traction;
before the heating season
(chimneys of seasonally operating gas equipment), as well as at least 1 time per
year.
3.2.9. During the initial check
and cleaning of chimneys should be checked: the design and compliance
materials used SNiP 2.04.08-87;
no blockage; their density and isolation; availability and correctness
cuttings that protect combustible structures; correctness and correctness
the location of the head relative to the roof and near the located structures;
normal traction.
When re-checking,
checked: the absence of blockages in the chimneys, their density, serviceability
heads and the presence of normal traction.
3.2.10. Primary Checks
smoke exhaust devices must be carried out by a specialized organization.
Subsequent checks during operation may be carried out by
owner with trained personnel.
Test results
formalized by act.
3.2.11. The checks carried out
technical maintenance, repairs, as well as any comments that arose during the work
heat generators, must be entered in the logbook for the operation of the boiler room.
COST OF BLOCK-MODULAR BOILER ROOMS
A block-modular boiler house, the price of which primarily depends on its “completeness” and power, is today a fairly demanded product on the heat supply market. To get an idea of how much such a heat source will cost, you can consider a number of examples.
The price of a block-modular boiler house in St. Petersburg
Suppose a client needs a block boiler house, the capacity of which in the “basic version” is 1 MW, which includes a boiler room, pumping equipment, equipment and automation of an economy version. At the same time, heat exchange and water treatment equipment are excluded from the thermal mechanical scheme.
In this case, the cost of a block-modular boiler house will fluctuate from 4.5 million rubles, which includes commissioning, installation, design work, supply, purchase of equipment, etc. At the same time, the lowest price of the boiler house will be formed when ordering the "economy option". And an increase to approximately 6 million rubles will occur if it is necessary to complicate the thermal mechanical scheme.
With the use of additional equipment, as well as the inclusion in the scheme of the DHW circuit, water treatment, heat exchangers along the circuits, additional types of alarms and automation, the cost will approach 7 million rubles per 1 MW of thermal power.
The price of the boiler room also depends on the components that will be installed in the boiler room. Our company uses only high-quality equipment from leading Russian and foreign manufacturers.
In order to determine the price and complete the boiler room, we recommend that you contact our company directly, our employees will help you in choosing the right solution.
Block-modular gas boilers at competitive prices
Our company offers to purchase block-modular gas boilers, the price of which is in the leading positions in the market. They are of high quality and have all safety and compliance certificates. Completely ready, transportable, automated block-modular boiler plants are supplied, which operate mainly on gas and diesel fuel. The price of a block-modular gas boiler is calculated individually according to the customer's data.
Modular gas boilers
Modular gas boilers are structures that are used for heating and water supply of residential and industrial premises for various purposes. Mobile boiler rooms in block design imply a complete set of equipment necessary for the full operation of the boiler room.This design is installed in the shortest possible time, due to the fact that the blocks are easily and quickly assembled. Gas boiler plants made of metal structures are today recognized as a promising area, both in Russia and abroad.
Features of the Gas Modular Boiler House
In addition to the fact that modular gas installations are mostly used for industrial and residential needs, they are also common in the field of agriculture (in poultry farms, in greenhouses and other industrial enterprises). Oil or natural liquefied gas is used as fuel in boiler rooms from block modules.
Based on the power and performance of the equipment, the timing of the construction and installation of a modular gas boiler depends. The complete set of gas modular boiler rooms made of metal structures includes the most high-tech equipment, due to which the work process in them is carried out automatically and does not need careful control. This is also the reason for a significant reduction in material costs for employees of the enterprise.
Advantages of a gas boiler house from modular blocks
A gas-fired boiler house made of modular metal structures has significant advantages over similar structures, including:
- Convenience and savings in the use of the boiler room;
- High quality of heat supply to the room;
- Environmental friendliness;
- Compactness and mobility.
A boiler room made of block modules is a reliable and safe source of heat. The station does not depend on emergencies, and objects that are equipped with such modular structures are not dependent on the availability of infrastructure at the site of the boiler installation.
4. Operation of automation equipment
3.4.1. The operation of automation means is to monitor them
and maintaining them in good condition in accordance with the instructions for
operation of the manufacturing plants of these funds.
3.4.2. Before putting the boiler into operation, adjustment is carried out
automation tools, the purpose of which is to set up automatic controllers and
signaling devices for the operating modes of heat generators required for this building and
heat supply to heating and hot water supply systems. Heat release modes
and work of heat generators are developed in the form of maps by the operation service
boiler room.
3.4.3. The schedules should indicate:
sequence of operation of heat generators;
parameter values (temperatures, etc.) that should be set automatically
regulators and signaling devices during their adjustment.
3.4.4. Frequency and scope of maintenance work
automation equipment are determined by their manufacturers.
3.4.5. Monitoring the operation of automation equipment during the operation of the boiler room
without permanent attendants is carried out daily. Data
observations of instrument readings and the condition of equipment should be recorded
to the magazine.
3.4.6. Operating personnel must know the sequence of operations
with automation equipment (valves of regulators and signaling devices) at
emergency situations and the procedure for reporting this to the management of the operation service
boiler room.
3.4.7. Changes in the setting of automatic regulators and
signaling devices are allowed to be produced only by specially designated for this
goals by officials.
3.4.8. Works on adjustment and repair of automation systems,
emergency protection and signaling in conditions of gas contamination are prohibited.
LIST OF USED SOURCES
1. SNiP II-35-76 “Boiler plants. Design standards".
2. SNiP 2.04.08-87 "Gas supply".
3. SNiP 2.04.05-91 "Heating,
ventilation and air conditioning.
4. SNiP 2.04.01-85
"Internal water supply and sewerage of buildings".
5. Instructions for
design of roof boiler houses (Minstroy of the Russian Federation), 1996
6. Safety rules in
gas industry (with changes), Gosgortekhnadzor of the Russian Federation.
7.Rules for the use of gas in
national economy (Ministry of the gas industry).
8. Rules for the installation of electrical installations (PUE).
9. Device rules and
safe operation of steam boilers with a steam pressure of not more than 0.07 MPa (0.7
kgf/cm2), hot water boilers and water heaters with temperature
water heating not higher than 388 K (115 °C) (Minstroy RF), 1992.
10. Technical rules
operation of municipal heating boiler houses (Minstroy of the Russian Federation), 1992.
11. RD
34.21.122-87 "Instruction for lightning protection of buildings and structures".
12. SNiP 23-05-94
"Natural and artificial lighting".
13. GOST 2.601-68*.
14. Technical rules
operation of consumer electrical installations (PTE) and safety regulations
in the operation of consumer electrical installations (PTB), 1971.
15. Rules for organizing work
with the personnel of energy associations, enterprises and divisions
Communal Energy of the Russian Federation (Minstroy RF), 1992.
Main
Terms and Definitions
|
Decentralized heating system |
A system in which the source of heat is |
|
Roof boiler |
Boiler house located (placed) on the floor |
|
Heat generator |
Hot water boiler using natural gas |
Operational safety standards
The operation of gas boilers has many advantages, but do not forget about a significant disadvantage - the danger of this equipment. This is due to the use of flammable substances and combustible substances, which represent all the danger.
- Gas hazards (emission of gases);
- Explosiveness;
- Fire hazard.
A fire or explosion can be caused by a gas leak (release). The danger of unforeseen situations during operation is very high. To prevent them from arising, the design of gas boilers should be carried out by qualified craftsmen who have a license for this, that is, a permit for this class of turnkey work. Licensing is mandatory, as it is a guarantee of the quality of the installation. The design is carried out by engineers, in accordance with the norms of SNiP.
To obtain a license, you also need to pay attention to the design of the premises, it must comply with the norms of SNiP. It should be borne in mind that the area of the boiler room with gas supply must be at least 4 m2
But this rate is indicated only for one boiler in the installation. The ceiling must be at least 2.5 meters high. The volume of the room with one boiler installed must be at least 15 m3. These parameters and norms of SNiP must be observed during the design in order to prevent the occurrence of dangerous situations and gas emissions.
Before installation, it is imperative to obtain a license to operate a gas boiler house and all the necessary certificates. This is all controlled by the state, as this equipment is very dangerous if installed and operated incorrectly. All units in the boiler room must have a safety data sheet. These documents are also issued by state bodies that carry out an expert assessment and the necessary calculations (including emissions of combustion products). The Ministry of Emergency Situations visits the facility and draws up the necessary documentation that the equipment of this class is installed in accordance with all the rules, does not pose a danger, and that it can be put into operation.
If the configuration, class of equipment and license allows the use of several types of fuel, then according to SNiP, to prevent dangerous situations, an industrial safety review of this class of equipment should be carried out.And also, in order to avoid danger, a check of the personnel involved in the maintenance of the units is carried out.
What is a modular boiler room
What is a modular boiler room?
A modular boiler house is a factory product consisting of one or more modules or blocks and including boilers, burners, a pump group, process control automation, gas alarms, filters, valves, and a water treatment system. Block-modular boiler rooms are designed for the preparation of hot water and heat supply. The burners ignite and maintain the flame in the boiler, the boilers contain water and with the help of pumps it is distilled into the water supply. In this way, cold water entering the modular boiler room is heated and hot water leaves the boiler room. The temperature of the outgoing hot water is +95 and +115 degrees C. An important element of the supply of the boiler room is a chimney, which is made of different types of steel and can be fastened in the following ways: on stretch marks, on a truss (metal structures), self-supporting.
It will not be possible to simply purchase a boiler room and install it on your territory - you also need to order a project, hand it over to the supervisory authorities, providing passports and certificates for both the modular boiler room itself and for internal equipment.
Typically, the manufacture of a boiler room takes 3-9 weeks, depending on the complexity and composition of the equipment. For example, if you have Italian boilers and German pumps in your project, but they are not currently available, the boiler house manufacturing time may increase by the delivery time of this equipment from abroad. You have to be ready for this. But not always the production time can be so long - often manufacturers keep in their warehouse the basic sets of equipment necessary for the manufacture of standard models of block boilers.
It is best to order the manufacture of modular boiler houses from suppliers proven over the years - in the company ZAO Gazovik-ENERGO. Since 1991, this company has been supplying industrial gas equipment and manufacturing modular boiler rooms. The company's specialists are ready to advise and competently select the necessary equipment, taking into account your needs. Knowing the specifics of this industry, Gazovik-ENERGO experts can offer the best solution and accompany the transaction from the moment you receive your request until the moment the boiler is shipped and installed at the construction site.
Block modular boiler houses from CJSC Gazovik-ENERGO are high-quality and reliable products that will provide you with heat and hot water for many years.
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Terms of reference for the manufacture of a boiler plant with a capacity of 10.5 MW
The GazSintez plant produces boiler plants both according to already developed layout schemes, and according to an individual calculation based on the submitted completed Questionnaire for TCU or technical specifications.
An example of a technical task for the manufacture of a boiler house with a capacity of 10,500 kW
| № | Name | Meaning |
|---|---|---|
| 1 | Estimated heat load, Gcal/h | 9,03 |
| 2 | Type of fuel | |
| basic | natural gas according to GOST 5542-87 | |
| backup | liquefied hydrocarbon gas according to GOST 52087-2003 | |
| 3 | thermal scheme | closed |
| 4 | Number of boilers, pcs. | 3 |
| 5 | Degree of automation | weather-dependent regulation with signal transmission to the control panel |
| 6 | Chimney | on a metal frame |
As a result of thermomechanical calculations, the GazSintez Plant manufactured a block-modular boiler house for natural and liquefied gas with the symbol GazSintez-BM-10500. Dimensional drawings and layout diagram are shown below.
Dimensional diagrams and drawings of the boiler house GazSintez-BM-10500
T1-pipeline for supplying network water, T2-pipeline for return network water, T3-pipeline for supplying hot water, T4-pipeline for circulating hot water, T13-supply pipeline from the boiler house, T23-return pipeline from the boiler-house, T95-drainage pressure pipeline, T96-drainage pipeline non-pressure, G2.1-medium pressure gas pipeline (natural gas), G2.2-medium pressure gas pipeline (liquefied hydrocarbon gas), B1-cold water pipeline
Layout diagram of the boiler house TKU-10500 kW
K1-hot water boiler Polykraft Duotherm 4000 kW, K2 hot water boiler Polykraft Duotherm 2500 kW, K3-pump of the boiler circuit of the heating system, K4-network pump, K5-pump of the boiler circuit of the DHW system, K6-pump of the DHW system, K7-anti-condensate pump for boiler Polykraft Duotherm 4000 kW, K8-anti-condensate pump for the boiler Polykraft Duotherm 2500 kW, K9-feed pump, K10-tank expansion membrane heating system V=1500 l, K11-tank expansion membrane heating system V=750 l, K12-system heat exchanger heating system, K13-heat exchanger of the DHW system 2.2 MW, K14.1-heat exchanger of the DHW system 500 kW, K14.2-heat exchanger of the DHW system 600 kW, K15-hydromagnetic water treatment system, K16-three-way mixing valve, K17.1-automatic installation softening, K17.2, K17.3-proportional dosing complex, K18-flowmeter Du150 complete with RTD and pressure sensor, K19-flowmeter-meter complete with RTD and pressure sensor, K20-air heating unit, K21-meters to cold water with an impulse sensor, K22-combined burner for the Polykraft Duotherm 4000 kW boiler, K23-combined burner for the Polykraft Duotherm 2500 kW boiler, K24-flow meter Du80 complete with RTD and pressure sensor; T1-network water supply pipeline, T11-boiler circuit supply pipeline, T2-network water return pipeline, T21-boiler circuit return pipeline, T3-DHW supply pipeline, T4-DHW circulation pipeline, G2.1-medium pressure natural gas pipeline, G2.2-medium-pressure gas pipeline of liquefied gas, T95-drainage pressure pipeline, T96-drainage pipeline without pressure, K3-industrial sewerage, V1-cold water pipeline, T13-pipeline supplying network water from GPTPP, T23-pipeline return network water to GPTPP
Technical characteristics of a boiler house with a capacity of 10500 kW
| № | Name | Meaning |
|---|---|---|
| 1 | Rated heat output, kW | 10500 |
| 2 | Boiler type / quantity, pcs. |
Polykraft Duotherm-4000 - 2 Polykraft Duotherm-2000 - 1 |
| 3 | Boiler efficiency, % | 92,0 |
| 4 | Flue gas temperature, ºС | 180 |
| 5 | Natural gas consumption, m3/h | 1292 |
| 6 | Consumption of liquefied hydrocarbon gas, m3/h | 430 |
| 7 | Gas pressure in front of the burner, kPa | at least 30 |
| 8 | Operating water pressure in the heating system, MPa | at least 2.0 |
| 9 | Electrical circuit voltage, V | 380 |
| 10 | Heat consumption for own needs, % | 3 |
| 11 | Consumed electric power, kW | 210 |
| 12 | Weight without chimney, kg | 70000 |
| 13 | Overall dimensions, LxWxH, mm | 13400x13600x3390 |
| 14 | Service life of the boiler house, years | 15 |
How to order a boiler house with a capacity of 10,500 kW at the GazSintez Plant in your city?
In order to buy a block-modular boiler house with a capacity of 10.5 MW (single-fuel or combined), you can:
- call the Factory at 8-800-555-4784
- send technical requirements for the boiler room and operating conditions by e-mail
- fill out the Questionnaire for TCU and send it by e-mail
- use the "Request a Quote" form, provide contact information, and our specialist will contact you
