Some standard content:
1(427.100
Machinery Industry Standard of the People's Republic of China
JB/I10399—2004
1. Rotor blades for off grid wind turbine generator systenm2004-02-10 issued
2004-06-01 implementation
National Development and Reform Commission of the People's Republic of China before issuing
Normative reference documents
Terms and definitions
Abbreviations
Definition
Effective requirements
and design
7.2 Grid design
7.3 Technical requirements
8 Environmental conditions.
8.3 General
8.2 Environmental conditions
Good requirements
Composite materials Materials
Jincun Science
T Mang main system
Model
Blade manufacturing
Blade level and safety
Blade manufacturing monitoring
Blade maintenance
Quality assurance
Test methods.
Test report format,
Aerodynamic performance test
Four-point test
Static test
Damage test
Inspection and acceptance
Test classification
Judgment rules and safety inspection rules
Unqualified
JB/I 0399- -25(4
JB/T1U395-2004
13.4 Final acceptance
14 Blade marking and maintenance instructions
14.1 Blade marking
142 Blade out-of-service maintenance instructions.
15 Packing, storage, transportation.
. Packaging
13.2 Leaf propagation machine file: various properties and installation 1. Original 15.3 This storage.
This standard is based on GB/T11/1E-2000 Standardization 1 Work Guide Part 1: Standardization Structure and Writing Rules" GB/T1.2-Part 2: Standardization Technical Requirements Contents Determination Methods "to determine the application. 213 Standardization Work Guide
This standard is determined by China Machinery Industry This standard is issued by the Federation of Power Machinery Standardization Technical Committee of the People's Republic of China. The leading unit of this standard is AVIC (Baoding Youteng Electric Equipment Co., Ltd.). The drafters of this standard are: Jiang Zhaoling, Sun Rulin, Zhang Ziguo 1 Scope
Off-grid wind turbine rotor blades
This standard specifies the general design and test methods for off-grid wind turbine rotor blades, JB/r10399-250M
This standard uses the rotor blades of small and large flat-axis wind turbines, and other types of blades can be used as a reference. 2 Normative references
The provisions of the following documents have become the provisions of this standard through reference in this standard. For all the cited documents with a date of note, their later revisions (excluding the contents of the survey model) are not applicable to this standard. However, all parties to the research and development work based on this standard can use the parent version of these documents. For all the cited documents with a date of note, their latest versions shall apply to this standard. G1447-1933 Test method for tensile properties of fiberglass reinforced plastics - Test method for energy conservation of fiberglass reinforced plastics! 463-1985 Test method for density of fiberglass reinforced plastics (2576-193) Test method for insoluble content of fiber reinforced plastic resins iH-257798 Test method for glass fiber reinforced resin content in monolithic materials 200.53-20 Technical terminology wind turbine generator set (dtEC500S415: 1599) GBT3356-1999 unidirectional fiber reinforced plastic bending performance reduction test method meA8TM137 price M: 993! G9239-9BB rotor balance product sales allowable unbalanced purchase 15194r-1: 199) ( 0069.1— 995
Industrial product manual
199 Wind power according to the use requirements
GB:TQR:
G17646—1998 Small x self-generating unit installation requirements (20C1400-2G/T19001—2000 Quality management system requirements GRT19068.2 Off-grid wind turbine generator set Part 2: Test method H168.5
Off-grid wind turbine generator set Part 2: Wind tunnel test method JH11 912000 Wind turbine rotor blade 3 Terms and definitions
GHT2000.53, G41764.6, B/19194 and the following term definitions apply to the following control standards. 3.1
RTM, for example, grease injection molding rusin 3.2
SMC, Sheet Molding Compounds: Sheet molding compounds made of resin paste without fiber or salt flakes. 3.3
DMC. Dough molding compounds: A dough mixture made by kneading components such as raw materials, primers, etc. with short fibers in a kneader. 4 Abbreviations
1.3.6 Definition of load conditions The definition of load conditions shall be in accordance with 4.4 of GB7646-1998. 7 Design requirements
7.1 Aerodynamic design
7.1.1 General
The aerodynamic design of the blade is the foundation of the whole unit. In order to make the wind turbine generator set achieve the best aerodynamic efficiency, it is recommended to use the curved load cavitation method in the blade chord length and pull angle according to the method given in GB/13981. It is recommended to use a low-speed airfoil designed specifically for wind turbine generator sets. 7.1.2 Rated design wind speed
The rated design wind speed of the blade shall be in accordance with the provisions of 6.1.1 of GR/T13981-1993. 7.1.3 Overall dimensions
The aerodynamic design of blades shall provide the blade length, twist angle and thickness distribution along the longitudinal direction of the blade and the required overall dimensions data. 7.1.4 Aerodynamic loads
According to the aerodynamic design, the aerodynamic loads given in Chapter 6 of the standard shall be calculated taking into account the load conditions. 7.2 Structural design
7.2.1 General
The blade structure shall be designed to take into account the loads in Chapter 6 of the standard and the influence of the actual operating environment of the engine to ensure that the blades have sufficient strength and durability to ensure that the blades will not be damaged during their service life under the specified environmental conditions. In addition, the weight of the blades is required to be as light as possible and the life span of the blades shall be fully considered. The analysis method and test verification shall be used to prove that the blades meet the requirements of static speed and durability under various design and use conditions. Strength calculation can refer to JD10194-Appendix R.7.2.2 Safety factor
The design safety factor of the blade shall be in accordance with the provisions of 4.7 in GB16-998. 7.2.3 Natural frequency
The natural frequency of the blade should avoid the frequency change of wind energy to avoid the occurrence of vibration. The value can be determined by piecework or by actual test. 7.2.4 Design service life
The blade design life should reach 15 years. The design should meet this requirement: The blade's service life can be determined by calculation or by labor test.
7.2.5 Minimum service life
In the worst environment, the blade should have a service life of at least years. 7.2.6 Physical properties
The structural design of the blade should also provide the following: 2
! Blade mass and mass distribution,
Blade center of gravity mass:
2) Blade moment of inertia:
Blade stiffness distribution:
2) Blade inherent characteristics (swing, level and rotation angle), 7.2.7 Interface dimensions
The structural design should give the detailed interface dimensions of the blade and wheel connection. 7.3 Technical requirements
JH/110359—2004
7.3.1. The blades shall meet the technical documentation requirements set by the manufacturer (the blade drawing is the main technical documentation of the blade). 7.3.2. The materials used to make the blades shall have the supplier's qualification certificate and meet the brand chemical composition specified in the drawing. The chemical properties, heat treatment and surface quality shall meet the corresponding standards. 7.3.3. The parts, components and external parts of the blade production shall meet the technical documentation requirements of the production. 7.3.4. In order to meet the performance of the blades and the processability and corresponding manufacturing requirements of the blades, Cost, the following tolerance requirements are the minimum values that blades should reach during mass production
a: Blade length tolerance: +1.3%×)m, where e is the blade length; Blade profile length tolerance: ±11.5%×)mm, where e is the airfoil profile chord length: e: Blade profile strict tolerance: ±(1%X)mm, where d is the typical profile thickness; Blade profile angle tolerance: ±0.5°) The airfoil tyre balance accuracy level should reach G16 level in B/T921-1V88. 8 Environmental conditions
8.1 General
When designing and modifying blades, some environmental requirements should be considered, and corresponding measures should be taken. It must have high environmental adaptability:
The metal parts used should adopt high quality design. The composite blades should adopt gel coat protective layer. 8.2 Environmental conditions
8.21 Temperature
The blade design operating temperature is 2540°C. Other required blade operating temperature ranges are subject to negotiation between the manufacturer and the user. 822 Humidity
The blade design operating humidity is not more than 95%.
8.2.3 Salt spray
For wind turbines operating in coastal areas, the corrosion effects of salt and other substances on its components should be considered during blade design, and corresponding effective screening measures should be taken.
B.24 Lightning
The blade failure should fully consider the possibility of lightning, and take corresponding strike protection measures. 8.25 Dust
The blade design should take into account the small impact of dust, such as the long-term impact of dust on the blade surface, etc. 8.2.6 Radiation
For composite blades, the intensity of solar radiation and the influence of ultraviolet rays on the chemical properties of materials should be considered 9 Requirements for blade materials
9. General
911 The selected materials should meet the design requirements and be suitable for manufacturing, JT/T10396—2004
91.2 The performance indicators and chemical composition of the selected materials should comply with the current standards or other relevant technical requirements 9.1. 3. Material manufacturers shall pass the GB/T19001 quality system certification and provide material joint proof inspection forms. 9.1.4. Material manufacturers shall keep instructions for use and use them in accordance with the regulations. 9.1.5. The main materials and materials used for important parts shall be retested for performance after entering the factory. The test type and scope shall be in accordance with the design requirements or relevant regulations. 9.1.6. Expired materials are not allowed to be used unless they are proved to meet the requirements through tests and relevant documents are issued. 9.1.7. The performance indicators and quality grades of substitute materials shall be equivalent to those of the original materials. 9.2. Composite materials
9.21. Reinforcement materials
9.21.1. The reinforcement materials for blades are usually glass fiber and its products, such as roving, and various fabrics. If necessary, fiberglass products can be appropriately selected. 9.2.1.2 The fiber surface should be protected or coated with a reinforcing coating, and should be suitable for the laminated resin used. 9.2.1.3 Glass fiber should use E-glass fiber, K1S glass fiber. 9.2.1.4 The fiber and its product grades should be uniform and conform to the current national standards or industry standards. 9.2.1.5 The performance test should be carried out according to the relevant national standard temperature. A7.2 9.2.2.1 According to the selection and requirements, the two resins are divided into laminating resins and adhesive resins: if the two resins are mixed together or used in combination, they should be of the same source: except for the two resins, the same structure should be used. 9222 Gel coat resin has good moisture resistance, resistance to ultraviolet radiation and other harmful environmental influences under curing conditions, and should have good transparency, low water absorption and high elasticity. Only thixotropic agents, additives and quality agents are allowed in gel coat resins. 9.2.2.3 The laminating resin should have good performance when layered, and should have good moisture resistance and anti-aging properties in the cured state. 9.22.4 All added curing agents, stabilizers, catalysts, fillers and additives to the resin should be coordinated with the resin. And the ratio must be balanced during this period to ensure that the resin is fully cured. 2.2.2.5 The filler must not affect the performance of the resin: the type of filler and the total amount of filler added can be determined through experiments: the proportion of fillers in the resin should not exceed 12% of the required amount (including a maximum of 5.5% thixotropic agent), and the proportion of thixotropic agent in the gel coat should not exceed 22.6 The pigment is not affected by climate and can be composed of inorganic or non-colorful organic dyes. The color is determined by the user. The proportion of blocks added shall be as specified by the manufacturer, otherwise it shall be added at 9.2.2.7 The resin, thixotropic agent, catalyst, and accelerator shall be used according to the manufacturer's process specification. Generally, a cold curing system should be selected, that is, it can be cured well within the temperature range of 16℃~25℃. 9.2.2.B The brand, specification and performance of the resin and all additives shall comply with the current national standards or relevant Industry standards. 92.2.9 Performance tests shall be conducted in accordance with relevant national standards. S.2.3 Core material
9.23.1 The core material shall meet the use requirements and shall not affect the curing of the resin: 9.23.2 The local reinforcement of metal materials shall be carefully cleaned and degreased: sanding or other methods shall be used to obtain a suitable surface state in order to achieve the best connection
9.2.3.6 Hard foamed materials can be used as core materials: The foamed plastic used shall be a closed structure 9234 Light wood can be used as core material, and shall be treated with antibacterial and insecticide before testing, and heat treated and treated, with an average moisture content of more than 2%.
9.2.4 Pre-cooling materials
Pre-cooling materials shall meet the requirements of the parts and be properly stored and used. The resin content shall not be less than 3%, and the ... 9.25 Adhesive
9.2.5.+ Adhesives are only allowed to use non-drop adhesives, preferably two-component reverse molding adhesives. If possible, the same layer resin as the blade should be used.
92.5.2 The adhesive shall not degrade the bonding material and can ensure the structural performance of the sheet. 9.2.6 Performance requirements for glass fiber reinforced plastic laminates 9.2.6.1 The performance of glass fiber reinforced plastic laminates shall meet the following requirements: Resin content (mass fraction): 4%--50% (except for gel coat and resin-rich layer) Adhesive strength: epoxy>9[%, polyester>85% Density: 1.7g/cml~1.9g/crml
9.2.6.2 The mechanical properties of single-drawn fiber laminates shall meet the following requirements: Tensile strength: Nmm:
Tensile modulus: 29mmVrmm;
bending strength: 600Nmm
oil mold plate: 250002m
9.2.6.3 = State broken fiber reinforced plastic laminate performance is to meet the following requirements tensile strength: = 200N/mm:
tensile modulus: : 0mN.mm
width: net 200N/mm:
inclusive modulus: inclusive 16000N/mmz.
9.2.6.4 Test method:
glass fiber reinforced plastic resin content according to GB/T2577 test, fiber reinforced plastic density according to (S Jin 2576 test glass fiber reinforced plastic density test GBT1463 method, unidirectional fiber reinforced plastic performance improvement according to (iH/3356 test. The properties of glass fiber reinforced plastics shall be tested according to GB/1110: The properties of glass fiber reinforced plastics shall be tested according to GB/1447. 9.3 Metal materials
HBT1G39S-2004
93.1 Under the premise of meeting the requirements of post-use, it is advisable to select ordinary structural steel or stainless steel. 9.3.2 For metal materials, pay attention to their sensitivity to fatigue strength and notch, and also consider the low leakage performance, corrosion resistance and processing performance. 15 Process requirements
10.1 General
101.1/The blade molding method can be hand-molding, SME/DMC molding, R1M molding and drawing or molding. 10.1.2 The workshop of the blade or molding and the lower part shall have temperature and humidity adjustment devices, and the ambient humidity shall be maintained at 16℃3U, and the relative humidity shall not exceed 15%. The production shall be monitored and recorded. 101.3 When the molding machine is in ventilation equipment, the concentration of harmful gases in the workplace should not exceed the standard. 10.1.4 When the blades or molds are being processed, dusty machining, painting, spraying, and other operations that may affect the quality of the blades are not allowed in the workshop:
10.1.5 All standard materials shall have a certificate of manufacturing quality and be used in accordance with the manufacturer's instructions: Materials that have exceeded their shelf life shall be tested and qualified before they can continue to be used. The material room shall be dry, ventilated, and free from strong light, and equipped with a temperature and humidity recorder to conduct inspections and record them. 1D.1.5 All pre- or pre-molded components shall be inspected and qualified before they can be put into storage and used. 1.1.1. Blade manufacturing and inspection personnel shall undergo special vocational training and hold certificates before they can take up their posts. 1.1.8 Blade manufacturing shall be carried out according to blade samples, technical conditions, and process regulations. 10.1.9 For pump blades, relevant processes and important process parameters shall be frozen. 0.2 Drawings
0.2.1 Discontinued drawings, data production is complete, correct, and valid. C.2.2 The manufacturing process shall comply with the technical points of dimensional tolerance, appearance quality and materials specified in JET10398-2004
?C.2.3 The direction, number of layers, placement and curing parameters of the reinforcing materials shall be ensured. 10.2.4 The heat treatment and surface protection treatment of the parts shall be carried out according to the requirements of the sample. 10.3 Tooling
10.31 The material and structure of the mold shall be determined by the manufacturer, but sufficient strength, strength, surface quality and size shall be guaranteed: the small tolerance of the outer dimensions, stability and repeatability of the mold shall be guaranteed. 10.3.2 Reduce the influence of heat and heat on the mold. 10.3.3 The mold shall be qualified after inspection, trial mold and trial product can be used for batch production. Before opening, the mold shall be coated with a suitable release agent, and the mold surface shall be clean and dust-free. 10.3.4 All environments shall have a specified calibration period and regular calibration shall be carried out. This calibration can also be completed by fully testing the last three products of each cycle. 10.3.5 If it is necessary to heat the mold, a temperature measuring device shall be installed on the mold, and its position shall be able to reflect the actual temperature of the tool. 13.3.6 The RTM mold shall be designed with sealing structures around the mold, and the positions of the injection holes and exhaust holes shall ensure that the gas in the cavity can be discharged smoothly. 15.4 Tooling 13.4.1 The tooling, equipment, tools, etc. required for blade manufacturing shall meet the process requirements and other relevant regulations. 10.4.2 The used measuring instruments, balances, and instruments shall be calibrated. Within the specified calibration range, 10.4.3 The tooling that directly affects the quality of the blade, such as drilling jigs, blanking templates, profile templates, etc., shall ensure the design tolerance requirements and be inspected regularly. The panel insulation design requirements shall be confirmed. 1.5 Blade manufacturing
10.5.1 Requirements for manufacturing parts made of non-composite materials 10.5.1.1 The processing and manufacturing of parts such as metals shall be carried out according to the drawings and process instructions. 10.5.1.2 The surface treatment and processing of parts such as sleeves and local reinforcements shall be carried out according to the design requirements. 10.5? Hand lay-up method manufacturing requirements
1052.1 The complete and feasible manufacturing process shall be carried out for each blade. 105.2.2 The adhesive shall be prepared according to the proportion and procedure required by the process specification and stirred evenly. 10.5.2.3 The pin layer shall comply with the requirements of the relevant technical documents and process specifications, and the position and fiber spacing shall be strictly controlled. The unidirectional fiber strip shall be straight, and the position of each node shall be strictly controlled to ensure the uniformity of the blade center position in the span direction and the chord. 10.5.24 The material of the light-emitting layer shall be treated before use. 19.5.2.5 The content of glue should be controlled between 40% and 50%, except for the gel coat layer and the surface resin layer. It is necessary to carry out cutting tests to determine the operation time and curing time.
15.5.2.6 The layers should be solid. Small blades are usually layered in layers. The layering operation should be completed within the specified time. 10.5.2.7 The leaves should be protected with gel coat to improve their service life. The thickness of the gel coat is 0.4-0.5TE and the effective dosage is 600g/m.
10.5.2.8 The curing of the resin should follow the specified process parameters. 10.5.2.9 Sufficient curing time should be guaranteed to ensure that the blades reach the required strength and will not deform during storage before they can be used. The cavity liquid formula, environmental conditions and laying thickness will be different for the next time, unless there are provisions in the process specifications: in this case, the process technicians can make on-site adjustments and guidance at any time. 10.5.3 RTM process requirements
10.531 The fire seal material can be placed in advance or laid in the mold. In order to ensure that the material does not move during the injection process, it is best to take necessary measures.
10.5.32 The injection can be carried out after the mold is closed and clamped. When all the vents have liquid flow without bubbles, the injection is stopped. 10.53.3 The same requirements as 10.5.2.9 are: 10.5.4 SMC/DMC and pultrusion molding technical requirements 10.541 Both methods use a heat-resistant resin system. 6
10.5.4.2 The internal degassing should be added to the glue performance patch. 10.5.4.3 Before modification, the mold should be pre-pointed to reduce the residual temperature and maintain the required flow: f10399--2094
10.5.4.4, 5MC℃/MC method of accompanying work time, holding molding speed should be controlled according to the current process: 10.6 Blade balance requirements
The hole volume and center of gravity of the blade should be statically balanced on the special equipment , the weight hole is set in the non-operating part of the blade. 113.7 Blade manufacturing monitoring
13.1 The production control of the blade needs to include raw material quality control, manufacturing process monitoring and product quality inspection. 10.2 The production procedure sheet, inspection sheet and other process documents should follow the production process and be signed by the responsible personnel.
10.7.3 The lamination of blade parts should be inspected on site during the manufacturing process, especially the fiber spacing, glue sheet, etc. "C.7.4 Visual inspection of the blade after photography: special attention should be paid to total bubbles, delamination, deformation, carbon sputum, etc. 1C.8 Blade defect repair
C.1 The surface of the repaired blade should be kept consistent in color. 'C.9.2 Defects such as delamination can be repaired by injection. C.8. The surface of the blade should be inspected by injection. The damage can be repaired by using resin glue and glass fiber filling method. For non-quality parts, apply the surface glue coat, grind and smooth it.
1.8.4 For the damage of blades caused during the operation of the hoop, according to the specific situation of the damage, a repair plan can be formulated before manufacturing, and the repair can be carried out on site, and the manufacturer shall provide quality assurance. 11 Quality Assurance
11.1 Note: The quality assurance system of the manufacturer shall meet the requirements of GB/T19001-2000. 11.2 The manufacturer shall ensure the effectiveness of the quality assurance system. 12 Test Methods
12.1 Summary
The purpose of the test is to verify the design feasibility, durability and rationality of the manufacturing process, and to provide a basis for the completion and improvement of the design and post-manufacturing process. The test results are used as the inspection documents for product finalization. The test instruments, meters and measuring tools shall meet the measurement accuracy. 12.2 Test report format
The test report shall include the following contents:
? Test date:
: Test piece or test model
) Test instrument, instrument accuracy and sensitivity d) Test principle and explanation method
) Test record (with relevant photos and diagrams): f) Test data:
) Test treatment table (including various curves): h) Test conclusion
i) Test points and dates,
The test report shall have complete meeting and benefit certificates 12.3 Aerodynamic performance test
The aerodynamic performance test shall be carried out in accordance with GB/T1906R.2 and GB/T1908.3. 12.4 Ambient characteristic test
High-performance test, 12.5 of GB/T1101-2000 shall be carried out. JB/T10399—2004
125 Static test
The static test shall be carried out in accordance with 12.6 of JD/T10194-2000. 12.6 Fatigue test
The fatigue test shall be carried out in accordance with 12.7 of JD/T10191—2000. 13 Inspection regulations and acceptance
13.1 Inspection classification
The inspection of blades is divided into standard inspection, type inspection and appraisal inspection. Each blade shall be inspected at the factory; new products shall be inspected upon completion; any of the following situations shall be inspected: a. After a new product is signed and finalized: when the blade manufacturer is producing the first trial or small batch: 5) When the product is produced again after more than one year of production: when the blades produced normally have been tested for 1 year since the last test: d. When the blade design, production process, and raw material changes affect the performance of the blade: e. When the blade manufacturer uses the third party to check the product quality and performance, it can also conduct meaningful tests. 13.1.1 Factory inspection
13111 Requirements for blades Inspection of the chord length of the airfoil. 131.1.2 The quality and center position of the blades are required to be inspected. 131.1.3 The blades are required to be inspected. 13.1.1.4 Each blade shall be inspected for external quality. 13.1.1.5 For blades supplied or assembled, the matching situation shall be inspected. 13.1.1.6 Other inspection items agreed upon by the manufacturer and the user. 13.1.2 Appraisal inspection
When the blades are finalized and signed, aerodynamic performance tests, static tests, inherent characteristics tests, fatigue tests shall be carried out in accordance with the law. 13.1.3 Type inspection
13.,3.1 The inspection items for the type inspection include static tests, and [weekly] performance tests. 1.11.3.2 Other test items agreed upon by the quality supervision agency and the manufacturer and user: 13.1.4 Inspection instruments
The equipment, instruments, tools, and measuring instruments used in the inspection shall meet the specified accuracy levels and be approved by the quality supervision agency. 13. Judgment rules and inspection rules
13.2.1 When the inspection result does not meet the production technical conditions and requirements, the piece shall be judged as a small unqualified product. 112.2 Type inspection: 1 or 2 pieces shall be inspected in each batch. If any item does not meet the requirements during the test, another blade from the same batch shall be taken for re-inspection of the item. If it still fails, the batch of pieces shall be re-inspected for the item. 133 Handling of unqualified products
133.1 Unqualified blades should be marked clearly and stored or handled separately. It is forbidden to mix with qualified blades. 133.2 Blades with slight defects but not affecting safety and performance requirements can be regarded as qualified products after necessary treatment by the user. 13.4 Final acceptance wwW.bzxz.Net
All blades are strictly inspected and completed the prescribed test: fill in the product qualification form, inspection form and other required documents for inspection.
14 Marking and instructions for use of blades
14.1 Marking of blades
141.1 General
The marking of blades provides the commercial description of the blades. The blades should be marked with a permanent mark on the blade parts using environmentally resistant materials.
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