GB/T 36699-2018 PDF English
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Specification for liquid-fuels and gaseous-fuels burners of boilers
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GB/T 36699-2018: Specification for liquid-fuels and gaseous-fuels burners of boilers---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT36699-2018
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.060.30
J 98
Specification for liquid-fuels and
gaseous-fuels burners of boilers
Issued on. SEPTEMBER 17, 2018
Implemented on. APRIL 01, 2019
Issued by. State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword... 4
Introduction... 5
1 Scope... 6
2 Normative references... 6
3 Terms and definitions... 8
4 Classification and preparation of model... 13
5 Composition and basic configuration... 15
6 Basic requirements... 19
7 Performance requirements... 20
8 Design and manufacturing... 29
9 Special requirements... 36
10 Inspection, testing and detection... 38
11 Technical documents and markings... 41
12 Packaging, transportation and storage... 42
13 Installation, commissioning and use... 43
Appendix A (Normative) Basic configuration of burner... 47
Appendix B (Normative) Requirements for arrangement of safety shut-off valve
of liquid-fuel burner... 53
Appendix C (Normative) Opening requirements of safety shut-off valve of main
gas... 59
Appendix D (Normative) Measurement and correction of emissions... 63
Appendix E (Informative) Measurement of flue-gas’s blackness... 67
Appendix F (Normative) Control timing diagram of liquid-fuel and gaseous-fuel
burner... 69
Appendix G (Normative) Conditions of type test... 70
Appendix H (Normative) Type test, exit-factory inspection, post-modification
inspection, in-use detection items... 80
Appendix I (Normative) Type test, exit-factory inspection, in-use test method
... 81
1 Scope
This standard specifies the technical requirements for the classification and
model preparation, composition and basic configuration, basic requirements,
performance requirements, design and manufacture, inspection, testing and
detection, technical documentation and identification, packaging, transportation
and storage, installation, commissioning, use of liquid-fuels and gaseous-fuels
burners of boilers.
This standard applies to forced draught burners and natural ventilation burners
which use the liquid-fuels and gaseous-fuels for boilers. Power plant boiler’s
startup burners, various industrial furnaces, industrial heating furnaces, burners
for other purposes may make reference to this standard.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this standard.
GB/T 1184 Geometrical tolerancing - Geometrical tolerance for features
without individual tolerance indications
GB/T 1804 General tolerances - Tolerances for linear and angular
dimensions without individual tolerance indications
GB/T 4208 Degrees of protection provided by enclosure (IP code)
GB/T 6414 Castings - Dimensional tolerances and geometrical tolerances
and machining allowances
GB/T 13384 General specifications for packing of mechanical and electrical
product
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Forced draught burner
The burners that are required to burn all of the air provided by the blower.
3.2
Natural ventilation burner
The burners that are required to burn all of the air sucked into the furnace
under negative-pressure.
3.3
Liquid-fuel
A liquid flammable substance that generates heat when burned.
Note. The liquid-fuels referred to in this standard include fuels such as light
oil, heavy oil, alcohol-based fuel, bio-oil.
3.4
Bio-oil
A liquid-fuel which is refined from biomass.
3.5
Gaseous-fuel
A gaseous combustible substance that generates heat when burned.
Note. The gaseous-fuels referred to in this standard include natural gas,
liquefied petroleum gas, coke-oven gas, mixed city gas, bio-gas, low-
calorific-value gas, combustible industrial tail-gas, hydrogen gas, methane.
3.6
Biomass pyrolysis gas
A low-calorific-value combustible gas produced by a pyrolysis process of a
biomass solid fuel.
4 Classification and preparation of model
4.1 Classification
The burners are divided according to the type of fuel used, the mode of
adjustment, the mode of air supply, the method of atomization, the type of
structure, as follows.
4.2 Preparation of model
4.2.1 The burner’s product model generally consists of four parts, each of which
is connected by a short horizontal line, as shown in Figure 1.
4.2.2 The code of each part of the burner’s product model shall comply with the
following provisions.
4.2.3 Example of models.
a) For a company’s H series gaseous-fuel burner which uses natural gas as
fuel, mechanical modulating control mode, natural ventilation, nominal
heat output of 2.0 MW, the model is identified as H-QMN-2.0;
5 Composition and basic configuration
5.1 Composition
5.1.1 The burner consists of a burner body, an air supply system, a fuel supply
system, an ignition device, a safety protection system, a load control system.
5.1.2 The burner body consists of components such as the burner head and
the casing.
5.1.3 The air supply system consists of a fan, air duct, air-flow control device.
5.1.4 The fuel supply system consists of the following.
electrode.
5.1.6 The safety protection systems consists of the following.
5.1.7 The load control system consists of a servo motor, a mechanical linkage
device or an electronic proportional control device, etc.
5.2 Basic configuration
5.2.1 Basic requirements
The configuration of the burner is related to factors such as fuel type and
combustion mode. The basic configuration is as shown in Appendix A.
5.2.2 Automatic safety shut-off valve of liquid-fuel
5.2.2.1 For liquid-fuel burners which have a nominal heat output ≤ 400 kW, the
automatic safety shut-off valve shall be arranged in accordance with the
requirements of Figure B.1 ~ Figure B.4 in Appendix B. The specific
requirements are as follows.
5.2.3 Automatic safety shut-off valve for gaseous-fuel
The configuration of the automatic safety shut-off valve for gaseous-fuel shall
meet the following requirements.
5.2.4 Flame detector device
The arrangement of the flame detector device shall meet the following
requirements.
5.2.5 Air monitoring device
The burner shall be fitted with an air monitoring device, that monitors the air-
flow through pressure monitoring, flow monitoring, other measurement methods
that reflect the supply air status.
5.2.6 Valve leak detector
A gas leak detector which has a nominal heat output greater than 1200 kW shall
be provided with a valve leak detector.
6 Basic requirements
6.1 Declaration of conformity
This standard has been developed in accordance with the basic safety
requirements for the liquid-fuel burner and the gaseous-fuel burner in TSG G0001.
6.2 Manufacturing organization
The manufacturing organization of the burner shall meet the following
conditions simultaneously.
6.3 Professionals
Professionals involved in such trades as manufacture, installation,
commissioning, repair, modification of burners shall have expertise in thermal
energy and electrical control, be familiar with the operation and commissioning
process.
6.4 Type test
6.4.1 Burners shall be subjected to the type test under one of the following
conditions.
6.4.2 The type test shall be carried out by an inspection and testing institute
which has the type test qualification of burner as approved by the State Special
Equipment Safety Supervision Department.
6.5 Inspection after in-service burner modification
After the modification of the in-service burner, it shall be inspected. The
inspection institute shall have the corresponding metrological certification
qualification.
7 Performance requirements
7.1 Safety requirements
7.1.1 Startup
The startup of the burner shall meet the following conditions.
7.1.2 Pre-purge
7.1.2.1 The furnace shall be purged before the ignition device is energized.
7.1.2.2 The pre-purge time and the pre-purge air-volume shall meet the
following requirements.
7.1.2.3 The pre-purge time of the dual-fuel burner shall be in accordance with
the requirements of 7.1.2.2 d) gaseous-fuel burners.
7.1.3 Post-purge
Immediately after the controlled shut-down of the burner, it shall carry out
purging. The purge time shall comply with the requirements of Table 7.
7.1.4 Safety time
7.1.6 Ignition of ignition burner
7.1.6.1 The ignition of the liquid-fuel shall meet the following requirements.
7.1.8 Restart
7.1.8.1 Failure in the pre-purge phase
When an air-flow failure occurs in the pre-purge phase of the gaseous-fuel
burner, it shall make safety shut-down and take interlock protection. However,
for a burner which has a heat output less than or equal to 120 kW, it allows one
restart after a safety shutdown. If the restart fails, it shall make safety shut-down
and take interlock protection.
7.2 Electrical safety
7.2.1 Electrical equipment’s safety shall meet the requirements of GB 19517,
the electrical safety shall be implemented in the order of direct safety measures,
indirect safety measures, suggestive safety measures.
7.2.2 In order to ensure the normal operation and prevent the danger caused
by the direct action of the current, the electrical equipment shall have sufficient
insulation resistance, dielectric strength, heat resistance, moisture resistance,
anti-fouling, flame retardancy, tracking resistance.
7.2.3 All parts that may be hazardous due to operating voltage, fault current,
leakage current or the like shall have sufficient electric clearance and creepage
distance.
7.2.4 Electrical equipment shall have sufficient mechanical strength, good
enclosure protection, corresponding stability, suitable-for-transportation
structure. The external conductive parts shall be reliably grounded, the
grounding resistance is less than or equal to 4 Ω.
7.2.5 Basic characteristics, wiring, implemented standards shall be clearly and
permanently marked on the product. If they cannot be marked on the product,
they shall be marked on the package or described in the instruction manual.
7.2.6 The electrical safety of the connection between the burner and the control
device shall comply with the relevant requirements of GB/T 14536.1, IEC
60335-2-102, GB/T 30597.
7.3 Requirements of operation
7.3.1 Ignition, operation, flame stability
The ignition, operation, flame stability of the burner shall meet the following
requirements.
8 Design and manufacturing
8.1 General requirements
The burner shall be designed to meet the following requirements.
8.2 Connection and sealing
The connection between the burner’s components and between the burner and
the boiler shall comply with the following requirements.
8.3 Main components
8.3.1 Automatic controller
The automatic controller shall comply with the relevant requirements of GB/T
14536.6 and meet the following requirements.
8.3.2 Motors, fans and moving parts
Motors, fans and moving parts shall be provided with protective covers or
protective nets. The performance of the motor and fan shall meet the following
requirements.
8.3.3 Air monitoring device
The air monitoring device shall meet the following requirements.
8.3.4 Air-flow control device
The air-flow control device shall meet the following requirements.
8.3.5 Fuel-flow control device
The fuel-flow control device shall be able to accurately adjust within the design
pressure range, the fuel-flow is stable and reliable. At the same operating point
during the upward and downward movement of the control device, the fuel-flow
shall be repeatable.
8.5 Assembly
The assembly of the burner shall meet the requirements of the technical
documents. All the connections and linkages of the burner shall be flexible and
reliable, there shall be no jamming. The installation position of each component
shall be correct and reliable.
8.6 Appearance
The decorative surface finish of the burner’s casing surface shall be complete,
uniform, smooth, there shall be free from scratch or peeling-off.
9 Special requirements
9.1 Alcohol-based fuel burner
9.1.1 Requirements of design and installation
The design of alcohol-based fuel burners shall meet the following requirements
in addition to the general requirements for liquid-fuel burners.
9.1.2 Requirements of use
Alcohol-based fuel burners shall use the alcohol-based fuels that meet the
requirements of GB 16663.It shall adjust an appropriate air-fuel ratio, to ensure
that the alcohol-based fuel is fully combusted, the original emission meets the
requirements in Table 12.Meanwhile it shall prevent the generation of pollutants
such as aldehydes.
9.2 Biomass pyrolysis gas burner
In addition to meeting the general requirements for gaseous-fuel burners, the
design of biomass pyrolysis gas burners shall also meet the following additional
requirements.
9.3 Surface burner
9.3.1 Design requirements
In addition to complying with the general requirements for gaseous-fuel burners,
surface burners shall also meet the following requirements.
9.3.2 In-use maintenance
Surface burners shall meet the following requirements when used.
9.4 Natural ventilation burner
In addition to the general requirements for gaseous-fuel burners, natural
ventilated burners shall also meet the following requirements when used on
boilers which have enclosed combustion chambers.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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