DL/T 1175-2021 Technical requirements for filter fabric and bag of flue gas bag house for thermal power plants
1 Scope
This document specifies the general requirements, basic parameters, selected technical requirements, use management and life evaluation, inspection methods, sampling inspection of filter fabric and bag of flue gas bag house for thermal power plants.
This document is applicable to flue gas bag house for thermal power plants and electrostatic-fabric integrated precipitator.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 3820 Determination of thickness of textiles and textile products
GB/T 3916 Textiles - Yarns from packages - Determination of single-end breaking force and elongation at break using constant rate of extension (CRE) tester
GB/T 3923.1 Textiles - Tensile properties of fabrics - Part 1: Determination of maximum force and elongation at maximum force using the strip method
GB/T 4668 Textiles - Woven fabrics - Determination of number of threads per unit length
GB/T 4669 Textiles - Woven fabrics - Determination of mass per unit length and mass per unit area
GB/T 4743 Textiles - Yarn from packages - Determination of linear density(mass per unit length)by the skein method
GB/T 5453 Textiles - Determination of the permeability of fabrics to air
GB/T 6505 Man-made fiber - Test method for thermal shrinkage of filament yarns (after treatment)
GB/T 6719 Specifications for bag house
GB/T 9914.3 The method for reinforcement products - Part 3: Determination of mass per unit area
GB/T 14335 Testing method for linear density of man-made staple fibres
GB/T 14337 Man-made fibre - Test method for tensile properties of staple fibre
GB/T 16845-2017 Dust collector - Terminology
GB/T 24218.1 Textiles - Test methods for nonwovens - Part 1: Determination of mass per unit area
GB/T 24218.2 Textiles - Test methods for nonwovens - Part 2: Determination of thickness
GB/T 24218.3 Textiles - Test methods for nonwovens - Part 3: Determination of tensile strength and elongation (strip method)
DL/T 387 Guideline of flue gas bag filter selection for thermal power plants
DL/T 1121 Technical specifications of bag filter system for coal-fired power plants
DL/T 1493 Ultra-clean electrostatic-fabric integrated precipitator for coal-fired power plants
DL/T 1619 Technical requirement of filter bag of the bag house for thermal power plants
HJ/T 324 Specifications for environmental protection product Fabric for bag house
HJ/T 326 Specifications for environmental protection product - Membrane complex fabric for bag house
HJ/T 327 Specifications for environmental protection product - Bag house bag
HJ 2039 Technical specifications for dedusting engineering of thermal power plants
JB/T 12119 Packing ring elastic test method for the bag of fabric filter
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 16845-2017 and the following apply.
3.1
breaking strength
maximum force recorded when specimens are stretched in the tensile test under specified conditions, expressed in Newton (N)
Note: Generally, the specimens are of 200 mm × 50 mm and tested along the warp direction and weft direction of filter media.
3.2
breaking elongation
ratio of the increased length of the filter media when it is stretched to fracture to its initial length under standard pretension, expressed in percentage (%)
3.3
constant load elongation at 50N
ratio of the increased length to the initial length of the filter media with the size of 200 mm × 50 mm when the tension reaches 50N, expressed in percentage (%)
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
5 Basic parameter
6 Technical requirements for selection of filter bags
7 Use management and life evaluation of filter bag
8 Test methods
9 Sampling inspection
Annex A (Information) Technical index of component materials for making filter media and filter bags
Annex B (Information) Main technical parameters used in selection of filter bag
Annex C (Informative) Recommended filter media and applicable conditions
Annex D (Informative) Evaluation method of filter bag remaining useful life
DL/T 1175-2021 Technical requirements for filter fabric and bag of flue gas bag house for thermal power plants
1 Scope
This document specifies the general requirements, basic parameters, selected technical requirements, use management and life evaluation, inspection methods, sampling inspection of filter fabric and bag of flue gas bag house for thermal power plants.
This document is applicable to flue gas bag house for thermal power plants and electrostatic-fabric integrated precipitator.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 3820 Determination of thickness of textiles and textile products
GB/T 3916 Textiles - Yarns from packages - Determination of single-end breaking force and elongation at break using constant rate of extension (CRE) tester
GB/T 3923.1 Textiles - Tensile properties of fabrics - Part 1: Determination of maximum force and elongation at maximum force using the strip method
GB/T 4668 Textiles - Woven fabrics - Determination of number of threads per unit length
GB/T 4669 Textiles - Woven fabrics - Determination of mass per unit length and mass per unit area
GB/T 4743 Textiles - Yarn from packages - Determination of linear density(mass per unit length)by the skein method
GB/T 5453 Textiles - Determination of the permeability of fabrics to air
GB/T 6505 Man-made fiber - Test method for thermal shrinkage of filament yarns (after treatment)
GB/T 6719 Specifications for bag house
GB/T 9914.3 The method for reinforcement products - Part 3: Determination of mass per unit area
GB/T 14335 Testing method for linear density of man-made staple fibres
GB/T 14337 Man-made fibre - Test method for tensile properties of staple fibre
GB/T 16845-2017 Dust collector - Terminology
GB/T 24218.1 Textiles - Test methods for nonwovens - Part 1: Determination of mass per unit area
GB/T 24218.2 Textiles - Test methods for nonwovens - Part 2: Determination of thickness
GB/T 24218.3 Textiles - Test methods for nonwovens - Part 3: Determination of tensile strength and elongation (strip method)
DL/T 387 Guideline of flue gas bag filter selection for thermal power plants
DL/T 1121 Technical specifications of bag filter system for coal-fired power plants
DL/T 1493 Ultra-clean electrostatic-fabric integrated precipitator for coal-fired power plants
DL/T 1619 Technical requirement of filter bag of the bag house for thermal power plants
HJ/T 324 Specifications for environmental protection product Fabric for bag house
HJ/T 326 Specifications for environmental protection product - Membrane complex fabric for bag house
HJ/T 327 Specifications for environmental protection product - Bag house bag
HJ 2039 Technical specifications for dedusting engineering of thermal power plants
JB/T 12119 Packing ring elastic test method for the bag of fabric filter
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 16845-2017 and the following apply.
3.1
breaking strength
maximum force recorded when specimens are stretched in the tensile test under specified conditions, expressed in Newton (N)
Note: Generally, the specimens are of 200 mm × 50 mm and tested along the warp direction and weft direction of filter media.
3.2
breaking elongation
ratio of the increased length of the filter media when it is stretched to fracture to its initial length under standard pretension, expressed in percentage (%)
3.3
constant load elongation at 50N
ratio of the increased length to the initial length of the filter media with the size of 200 mm × 50 mm when the tension reaches 50N, expressed in percentage (%)
Contents of DL/T 1175-2021
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
5 Basic parameter
6 Technical requirements for selection of filter bags
7 Use management and life evaluation of filter bag
8 Test methods
9 Sampling inspection
Annex A (Information) Technical index of component materials for making filter media and filter bags
Annex B (Information) Main technical parameters used in selection of filter bag
Annex C (Informative) Recommended filter media and applicable conditions
Annex D (Informative) Evaluation method of filter bag remaining useful life
