Environmental technical requirements of machinery products for dry heat environment
Some standard content:
GB/T 14093.5 This standard is a part of the research on environmental suitability of mechanical products. Prior to this, a series of standards for environmental technical requirements for mechanical products have been formulated, including: Environmental technical requirements for mechanical industrial products for use in hot and humid environments GR/11093.-93 Environmental technical requirements for mechanical industrial products for use in cold environments (B/114093.2-93 Environmental technical requirements for mechanical industrial products for use in commercial environments GB/T 14093.3 934
Environmental technical requirements for mechanical industrial products
(13/111093.1-93 Environmental technical requirements for mechanical industrial products for industrial corrosive environments
GB/11562[-1995 Environmental technical requirements for mechanical industrial products for mining environments
This standard will include environmental conditions, environmental protection types, technical requirements, test methods and qualified requirements, inspection rules, makeup, marking, etc. In addition, some better protection technologies, materials and processes are listed as appendices to provide design and manufacture Department reference. Appendix A, Appendix 3 and Appendix C of this standard are all informative appendices. This standard was proposed by the Ministry of Machinery Industry of the People's Republic of China. This standard was drafted by the Guangzhou Electric Science Research Institute of the Ministry of Machinery Industry. The main drafter of this standard is Liu Nafang.
This standard is entrusted to the Guangzhou Electric Science Research Institute of the Ministry of Machinery Industry for interpretation 1 Scope
National Standard of the People's Republic of China
Environmental technical reguirements of machinersproduets for dry heat environment
Environmental technical reguirements of machinersproduets for dry heat environment GB/T 14093.5—1997
This standard specifies the environmental conditions, product protection types, technical requirements, test methods, acceptance rules, and requirements for marking, packaging, transportation and storage of mechanical products for use in hot and dry environments. This standard is applicable to general-purpose mechanical products used in dry and hot climate zones as specified in CL1797.1 Natural Environmental Conditions, Temperature and Humidity for Electrical and Electronic Products. The major categories of products include agricultural machinery, internal combustion engines, construction machinery, lifting and transportation machinery, heavy machinery, petrochemical general machinery, electrical products, instruments and meters, machine tools and general parts. 2 Reference standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. The versions shown at the time of publication of this standard are valid: All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards: GB2423.1-89 Basic environmental test procedures for electric and electronic products Test A: Low temperature test method (eqvIEC68-2-2.1974)
GB2423.2-89 Basic environmental test procedures for electric and electronic products Test B: High temperature test method (eqvIEC68-2-2.1974) EC68-2-2:1974)
GB/T2423.4—93 Basic environmental testing procedures for electric and electronic products Test Db: Cyclic damp heat test method (euv IEC68-2-30:1980)
G13/T2423.5—1995 Environmental testing for electric and electronic products Part 2: Test methods Test Ea and guidance: Shock (1dt IEC68-2-27:1987)
GRB/T2423.10-1995 Environmental testing for electric and electronic products Part 2: Test methods Test Fc and guidance: Vibration
(sinusoidal) (idt IEC68-2-6:1982)
GB/T2423.1793 Basic environmental testing procedures for electric and electronic products Test Ka: Salt spray test method (egv [IEC68-2-11:1981)
GB2423.22-87 Basic environmental testing procedures for electrical and electronic products Test N: Temperature change test method (eqv IEC68-2-14:1984)
GB/T2423.24—1995 Environmental testing for electric and electronic products Part 2: Test method Test Sa: Simulated ground solar radiation (idt IEC68-2-5:1975)
GH2423.37—89 Basic environmental testing procedures for electric and electronic products Test L: Sand and dust test method (neq DIN40046:1978)
GB/T2951.15-94 Test methods for mechanical and physical properties of wires and cables Oil immersion test (GH3836.1—83 General requirements for explosion-proof electrical equipment for explosive atmospheres State Technical Supervision Bureau 1 997-12 - 30 approved (eqv JEC 811-2-1:1986)
1998-07-01 implementation
GB/T 14093.5 1997
GB 4208-93 Enclosure protection degree (IF code) (cqvIEC529; 1989) GB4757.1-81 Electrical 1. Natural environmental conditions for electronic products: temperature and humidity (ne9IEC72121:1982) GB4798.1-90 Electrical small product application environmental conditions CB4798.2:90 Electrical electronic product application environmental conditions for transportation (neg[EC721-3-2:1985) Electrical and electronic product application environmental conditions for fixed use in weather-protected locations GB 4798-3. 90
GB4798.190
Environmental conditions for application of electrical and electronic products, fixed use in places without weather protection (neg 11721-3-1)
G735087F
Technical conditions for waterproof packaging
G1 8166--87
Design method for cushioning packaging
GR/T14092.71997Environmental conditions for mechanical products Dry heat 3 Product protection types and their environmental conditions for use 3.1 Product protection types
3.1.1 Dry heat type, suitable for indoor use in tropical areas, code TA. 3.1.2 Dry heat outdoor type, suitable for outdoor use in warm areas, code WTA. 3.1.3 Dry heat desert type, suitable for hot desert areas, code TS. 3.2 Environmental conditions
3.2.1 Codes and descriptions of environmental conditions:
3.2.1.1 Types of environmental conditions include: Climate conditions6/W3. If some products are not suitable for use under certain conditions, the environmental conditions are not listed in Appendix III. Environmental conditions not listed in this standard shall meet the requirements of basic products. 3.2.5.2 If the environmental condition levels in 3.2.2 and 3.2.3 cannot meet the actual use requirements, the user and the manufacturer shall negotiate and determine whether to adopt other levels specified in GB4798.3 or GB4798.4. 4 Technical requirements
4.1 All products used under the environmental conditions specified in this standard shall meet the requirements of this standard. Products not specified in this standard shall meet the relevant standard specifications of the product.
4.2 Products used in dry and tropical areas: Due to the high ambient temperature, the insulation level should be Class B or F. When selecting capacity, an appropriate margin should be left, or the capacity should be reduced during high temperature seasons. 4.3 Electrical components with thermal protection devices shall be equipped with humidity compensation mechanisms, and the total temperature compensation range is 3C15. If the temperature compensation device is used, it should be considered according to the ambient temperature of 50C. 4.4 The air conditioner used in the dry and tropical areas should be type 1 air conditioner, which should ensure normal operation under higher ambient temperature. 4.5 The temperature difference in tropical areas is large, so the material selection and structural design should meet the requirements of convenience. The materials used should consider the aging effect caused by solar radiation.
4.6 The relative humidity in tropical areas is 50% all year round, or even below 20%. The products and selected materials must meet the requirements of working under low humidity conditions.
4.7 The shell protection level of the bearings and wiring of the generator used in the desert should not be lower than IP51. The whole machine product should adopt the structure with shell protection level of IP54. When the structure with lower than IP54 is adopted, the cooling air entering the motor should have good dust filtering measures to ensure the safe and reliable operation of the unit.
4.8 The motors and other air devices used in foreign countries should take simple sun protection measures to reduce the direct impact of solar radiation. The bearings and the housing of the junction box of the DC motor used outdoors should be sealed or pressurized to reduce the harm of sand and dust. 4.9 A large number of field rooms are used in the process of sand drilling, especially the electrical control cabinet (including the S-type control system). The cabinet should be well sealed and equipped with a temperature control system so that it will not be too cold in winter and can be controlled below 29°C in summer. 4.
GB/T74093.5--1997
4.11 The outer structure of the movable field drill should have sufficient strength, and the outer shell should have an oil layer and protective layer with good adhesion. The color of the paint layer should be lighter to reduce the influence of solar radiation. 4.12 In dry and hot desert areas, especially in sand drilling, the cables used should be heavy-duty rubber cables that are weather-resistant, oil-resistant, cold-resistant, soft and can withstand large mechanical external forces.
4.13 The relay should meet the requirements for use under higher ambient temperatures, and sufficient quantity should be reserved during selection and calculation. 4.14 In hot and dry areas, the surface temperature can reach 70°C in summer. Cables should not be placed directly on the sandy surface, but should be placed on cable trays with better protection performance. The cable of the drilling rig should be connected through the field barracks, and the requirements of relatively complex relocation and ladder frame folding and relocation should be considered. 4.15 The conditions for transportation in the desert are harsh, and the packaging must be firm. If necessary, anti-crashing and anti-tilting measures should be taken. 4.16 The gas equipment used in the dangerous area of drilling should meet the corresponding explosion-proof grade requirements. 5 Test methods
5.1 General requirements
After the basic performance test of mechanical products used in tropical areas is qualified, the corresponding environmental test items shall be selected according to the sensitivity of various products to the influence of thermal environmental factors, and the products shall be subjected to artificial simulated environmental tests. The environmental test items to be carried out and the test severity level shall be specified by the product standards according to the product's use environment conditions, operation requirements, etc. The test contents of products, materials or parts after the test are shown in the appendix ((suggested appendix)).
5. 2 Test items
Table 1 lists the environmental test items available for product selection. Table 1 Environmental test items
Test item name
Low temperature testwwW.bzxz.Net
High temperature test
Source heat test
Vibration (sinusoidal) test
Fog test
Field test method standard
GB 2423.1
GE 2123. 2
GB 2423. 4
CB 2423. 10
GB 2423. 17
Or test severe load
Degree: - 40 ℃, - 25 ℃
Duration: 2h, 16h.
Temperature: 85'℃, 70'℃,
Duration: 2h, 1611,
72h, 96h
Degree: ~30℃
Humidity: 93%
Duration, 2d, 6d,
Test period,
amplitude and duration are shown in
Fe test selected
sodium hydride concentration: 5%=
Test cycle, 24h, 4.8h,
Brief description
Environmental grade
3M1---3M8
4M1~-4M8
4C2.4C37/4CA
Application instructions
Products used for indoor and outdoor
Adaptation under low temperature conditions
When special slurry is 3Zh2
or 4Zh2 When conducting this test, the duration should be determined by professional products. The adaptability and evaluation of the vibration resistance of products or components and the integrity of their structure. The process assessment of the electrical layer and chemical covering layer of components. Test item name: Solar radiation test (QUV test) Shell protection test Shell protection test Oil immersion test Temperature change test Operation inspection Anti-flammability test Test method standard CB 2423. 24 GB4209 GB4208 GB/T 2591.15
GH 2423. 22
GB 4798.2
CB 3836. 1
GB/T 14093.5—1997
Table 1)
Test severity level
Brief description
Environmental condition level
Total radiation per cycle
8.96, 22.4, 26,
88kwh/m*
Cycle: 3d, 10d, 5 6d
1 ~ 4 Level anti-solid foreign body
5~-6 level anti-test
1--2 level waterproof test
H level waterproof test
4 crack waterproof test
5 level waterproof test
ASTM2 No. Di or 20
No. engine oil. Connect wires and cables
specified test temperature and
- -30 C--55 C(3mn)
3S1.3S2,4S1,1S2
3S3.3S4-4S3.4S4
3z (fire prevention)
3Zw8 (water spray)
3K6L.4K41.
Specifically according to the test curve, 10
3K6L.4K4L
: According to 2M2 requirements| |tt||：According to the standard
3K6L.1KiL
3K61.,4K41.
Application Instructions
Assess the effects of heat, machinery, chemical, electricity, etc. on products and materials under solar radiation
Assess the ability of the product shell to resist indirect foreign matter.
Assess the dustproofness of the product exterior
Assess the waterproofness of the product shell when it is vertically filled with water and when the shell is inclined within 15' from the normal position.
Assess the waterproofness of the product shell when it is sprayed with water within a range of 60 degrees from the vertical.
Assess the ability of the product shell to resist water reduction in any direction.
Assess the ability of the product shell to resist water in any direction
Assess the rubber of wires and cables.
Research on the insulation capacity and insulation level of materials and sheaths
Assess the adaptability of electrical and electronic products
or materials under temperature drastic changes
Assess the adaptability of products and device packaging to transportation
Assess whether electrical equipment meets the requirements for protection
6 Inspection rules
GB/T 14093.51997
6.1 Artificial simulation environment test can be used as a type test for dry heat products. The assessment standard of the product after environmental testing shall be specified by the product standard.
6.2 The artificial simulated environment test allows the selection of representative products from the series of products with the same structure, material and process for testing. If the test is qualified, the products with the same structure, material and process are considered qualified: 6.3 When the artificial simulated environment test is conducted on one person or medium-sized products and the whole machine is not required to be conducted, product parts or simulated parts are allowed to be tested. The specific requirements can be specified in professional standards. 6.4 When the test product is sent for test or the parts and simulated parts are used instead of the finished product for artificial simulated environment test, the number of parts shall not exceed the product standard, but for smaller products or parts, it is generally specified to be 2-3 pieces. 6.5 After the environmental test, the materials, parts or products shall be inspected for the main performance affected, and the inspection items shall be specified by the product standards.
6.6 Products or parts that have passed the artificial simulated environment test can still be shipped as products after repair. Marking, packaging and storage
7.1 The expansion type of heat-resistant mechanical products should be marked in the product model, that is, the environmental code "TA\ or \TS\" should be added after the product model. 7.21 Products used in hot desert areas have poor road transportation conditions and must be packed. Please refer to GB7350 and GB8166 for relevant packaging requirements. The severity level of the environmental parameters of the product transportation environment should be determined according to GB4798.2. 7.3 The product should be stored in a ventilated place without corrosive gases. If stored in the open air, avoid direct sunlight and sandstorms. The storage environment conditions of the product should be determined according to GB4798.1 to determine the severity level of the environmental parameters, GB/1 14093.5—1997
Record A
(Appendix of the author)
Key points of environmental protection technology for mechanical products used in dry and hot environmentsA1 To reduce the impact of high temperature and dust on electrical equipment, in the vicinity of deserts, especially in desert drilling equipment, control switches, instruments, relays, contactors, etc. should be placed in well-sealed rooms or control cabinets. Cooling should be adopted in summer, and heating should be adopted in winter to keep the indoor temperature within the range of 1n℃0FC as much as possible.
A2 Dust filters must be installed at the ventilation and cooling inlet of the engine, because the dust in the high places The volume is small, and the air vent should be installed at a higher position as much as possible:
A3 The area around the solid control system of the drilling operation in the hot desert is an operating dangerous area: there may be explosive and flammable gases, so the electrical equipment selected in this area should be explosion-proof. A41 The sun's radiation in hot areas is strong, paint is easy to crack, plastic is easy to age and deform. When using equipment in outdoor places, take some simple shading measures as much as possible to avoid causing a high temperature rise and damage to the equipment. A5 Sand and wind are the biggest hazards in dry and hot deserts. The sand and dust in the Taklimakan Desert are extremely fine, and the equipment must have good sealing. Even if it cannot be sealed, Enclosed areas should also be fenced off, and groundwater should be blocked near the work area to reduce the flying of sand and dust, which can also reduce the impact of sand and dust:
A6 In dry and hot areas, the temperature difference between night and day can reach 30~-40C, which can cause condensation inside some equipment. Intermittent working equipment should consider the discharge of condensation accumulation.
A Our hot areas are located in high latitudes, and the lowest temperature in winter can reach 30C. Therefore, the selection of materials and machines powered by internal combustion engines should consider the impact of low humidity.
A81 In hot areas, there is very little rainfall, and the annual relative humidity is below 50%. Summer sets are longer At about 20%, the air is very dry, wood materials are easy to crack and paint layer is easy to crack, nitro topcoat materials are suitable, Appendix B
Reminder Appendix)
Instructions for selecting environmental condition levels
B1 Climate condition level
Climate condition level This standard lists 3K61 for places with climate protection. + 4K4L or 4K4S for places without climate protection. B2 Biological condition level
Plant hazards (fungi, bacteria) can be ignored, the standard only lists 3B1, 2 and 4I1, that is, rodents and other animals that endanger legal products: FT ants are excluded. B3 Chemical active substance conditions
3CI, 1C1, etc. are used in rural areas with less industrial active substances and moderate traffic. 3C2, 4C2 This grade is used for general pollution, industrial pollution distribution area or busy traffic town: 3: 3.463 This grade is used for places close to industrial pollution, 3C4.1 This grade is used for places with high degree of chemical pollution inside industrial production, and B4 mechanical active material condition level
GB/T 14093.5-1997
352 This grade is used for places without dust facilities and not close to dust sources, 3S3 This grade is used for places close to dust sources. 354 This grade is used for places where sand and dust are generated by industrial processes, or places with many winds and dust in geographical locations. 451 This grade is used for rural areas not close to dust sources. 4S2 This grade is used for areas with dust or dust sources. 453 This grade is used for areas with wind and sand or dust in the air due to geographical location. 154 This grade is used in areas where there is often a high content of sand and dust in the air due to geographical or production conditions. B5 Mechanical conditions
3M1, 3M2, 4M1, 4M2 are used in places where significant vibration and impact can be prevented. 3M3, 4M3 are used in places where significant vibration can be prevented, but impact caused by blasting, piling, etc. can be caused. 3M4, 4M4 are used in places where vibration caused by machines or vehicles or impact caused by blasting, piling, etc. 3M5, 4M5, 3M6, 4M6 are used in places where perturbations caused by machines or vehicles or high-energy heavy trucks caused by nearby machinery, conveyor belts, etc.
3M7.4M7, 3M8, 4M8 are used in places where the product is directly installed on the machinery and there is high-energy vibration and impact caused by the machinery itself.
Note: Several other cases such as wheel properties, sandy landforms, and groundwater conditions are subject to specific agreement between the user and the design and manufacturing department. B6 Application Example
Product Name: Diesel Generator Set
Place of Use: Xinmeng Korla Power Plant
Indoor climate: dry and hot
The general code for environmental conditions is 3K6L/3Zh2/3Za6/3Zw8/3B2/3C3/8S8/3M7. Appendix C
(Suggested Appendix)
Contents of Environmental Tests
1 This standard lists a test, and each product can select the necessary test according to the impact of environmental conditions on the product. The test contents after environmental test are shown in Table 1.
Test items
Low temperature test
Commercial temperature range test
Condensation heat test
Salt penetration test
Starting performance
Mechanical properties
Recommended table of test contents
Test contents
Oil and lubricant properties
Material and electrical equipment properties
Electrical properties, material modification and protection technology
Metal plating, appearance
Application instructions
Mechanical products powered by internal combustion engines, batteries, small motors, etc.
Performance of rubber, plastic, metal materials and welded parts. Grease and overpressure system, fuel shaft, etc.
Material and electrical equipment resistance to high temperature Test the adaptability and protection ability of products under tidal turbulence
Assess the shell protection process and parts and components electrical chain layer and chemical test items
Solar radiation test
Shell protection test
Explosion-proof test
Vibration (normal) test
Temperature change test
Sleeve test
Transportation test
GB/T 14093.5
Table C1 (complete)
Material performance and electrical temperature rise
Virtual use adjustment
Assess the anti-aging performance of the surface layer, the additional temperature rise of the electrical
Check whether the body or water is only in the shell
Whether the obstruction requirements can be met
Components or products are deformed and cracked.Structural condition
Material or product performance and external specifications
Changes in tensile strength and elongation at break of wires and cables Protective packaging of products or devices
Solid foreign matter protection Sealing performance Dustproof or water-repellent performance
Testing the requirements of electrical equipment
Testing the adaptability of components or products to vibration environments Test the adaptability of materials or products to rapid temperature changes
Testing the adaptability of products or materials to oily environments Test the protective performance of connected products, devices or packaging under transportation conditions
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.