GB/T 12920-1991 General technical requirements for marine pneumatic systems
Some standard content:
UDC629.12621-522.7
National Standard of the People's Republic of China
CB/T 12920—91
General technical specifications of pneumatic systems is for ship
1991-05-22 Issued
Implementation on 1992-02-01
State Bureau of Technical Supervision
National Standard of the People's Republic of China
General technical specifications or pneumatic systems for shlp
The standard shall only adopt the international standard 1S04411-192 "General Technical Specifications for Pneumatic Systems". 1 Main content and applicability
GB/T 12920-8T
This standard specifies the technical requirements, test methods, inspection rules, marking and packaging that must be followed by pneumatic systems. This standard is applicable to all kinds of pneumatic components, pneumatic systems and shafts used in offshore engineering. Pneumatic components, pneumatic systems and accessories in engineering machinery, metallurgy, chemical and other industries can also be certified according to this standard. 2 Reference standards GB2UB Classification of enclosure protection grades GB 786 GB 2346 Hydraulic and pneumatic parts and components - Pressure series for industrial automation instruments Air source pressure range and quality specifications and special symbols for paint colors GE 3033 Environmental test procedures for electrical and electronic products GE2423 Type test methods for automatic control equipment CE3225* GE 191 Technical requirements for connection Color packaging, storage and transportation diagrams 3.1 Working environment conditions 3.1.1 The commercial pneumatic system shall meet the requirements of Table 1 under the commercial code. Table!
Environmental improvement,
In the past, the dry 70 (, the main engine of the installation, the protection of the landing place, 3.1.2 Low temperature
Retained pneumatic system should be able to work normally under the conditions specified in Table 2. The State Technical Supervision 19 tons 01-05-22 approved the request
Demonstration work
Continued work within the special research should be
1992-0-01 implementation
Installation place
Outdoor and no protective measures of the A report quiet room
A section of the gun
Internal control room, fertilizer room, light difficult
Coal wet machine tire
8.1.3 Humidity
GB/T 12920-91
The pneumatic system should be able to work normally under the conditions in Table 3. Table 3
Environmental sensitivity
Environmental sensitivity
Relevant information.1.1.1 The pneumatic system installed in the cabin shall be subjected to the 4b salt spray test and its appearance shall comply with the provisions of Table 4. Table 4
Electrical category
Lithium + copper
Viscosity||tt ||Lejinyuan
Pre- and post-metal
Copper and copper alloy enterprises
Cooperative Association
Standard requirements
Main surface should not be double gray and black. The surface of the shaft should not be rusted
The surface of the upper part should be strong
The surface of the soil should not be gray or light green.
The surface of the soil should not be green.
No black or blue.
8.1. . Install the pneumatic system outside the cabin. The whole machine should have no obvious code after the practical test, two changes 8,1.5 each
The pneumatic system should have anti-bacterial ability, especially the components and coating materials in the heart should be subjected to 28d long bending test, according to the needs of each level, the length should not exceed the provisions of the table, Table 5
Long Guo Shu Cha
Haisheng Medical Safety
Therefore, the large 50 production is not available from the growth ||tt| |It is difficult to see bacterial growth inside the eye, improve the size of 50 to follow the view to the side + points of the meat service to the total benefit to the long year, the product surface each with the whole tooth job less than 25%3,1., fast oblique, take the angle of the core to 6 regulations to accept the special
care, shake the connection
vertical grid, 1e*
6 period printing:
customary report: 45
service: 15"
vertical Rui,:
vertical correct, G:
GB,T 12I2001
Hun Yue Fan Tian
Swimming, water, and marine special-purpose ships such as surface ships
Huang. 2230
Price vertical increase,! 1 heart 8, Zhou Ming 10s thank version +15\
solution, 7.5
Information through the system through the sea chaos
Cuckoo pneumatic system should be able to withstand the relative position of the lower table (direction, transverse, longitudinal) of the sinusoidal vibration contention number according to Table 7, the product enterprise test without mechanical damage and malfunction. General case
Dynamic test strength
Phase shift value, state
speed, m/
>13.2~[90
.: 6. 86
Reciprocating engine, energy machine gun
>25 ~100
8.1.8H Light radiation
Light-duty pneumatic systems exposed to sunlight should only be subject to radiation intensity of 1.12W/, the allowable change integer is 0, and its spectral energy distribution should comply with the thermal effect, optical effect or degradation effect of light radiation specified in Table 8. 8
Xie Yicheng
Huang Wai Xiong
Strange light
Infrared
1. 2X . 10
2-1. 40 ~ 0. 78
0.78 3.00
w/m:ea1/em.ln）
3.1. Transportation conditions
When the pneumatic system is used for packaging, it should withstand the continuous impact of the following turbulent parts. Continuous impact times: 1000 times ± 10 times
Acceleration: ?m+10m/s
Corresponding pulse duration: 11±2m
Pulse frequency: 60-100mi= (1~1.7Hz) Impact waveform: Approximately half-sine wave
3.1.10 Pulse acceleration
General pneumatic systems should be able to work normally under the condition of a continuous pulse acceleration of 10m/s, and the impact acceleration shall be as specified in the table. 7
Environmental category
3.1.11 Enclosure anti-expansion
GB/T 12$2091
Impact drop height, current
remote control god research
time]n.Bm()
Back same:
year, 0.3m (*)
Use the four
Business interruption to pay attention to the final design of the private cooperation space should be based on the impact time
confusion problem solution to buy continuous combat and new treatment safety avoid convex sea shadow eating time
3.1.11.1 The outer shell of the moving component should have sufficient mechanical strength and rigidity, and its assembly should make the sealing structure and the internal function of the cattle under the specified working conditions may produce the main influence. 3.1, 11.2 The type of external protection of the general pneumatic system shall be selected according to the needs of different products and shall comply with the provisions of GB42. 3.2 Basic requirements
The pneumatic system should be reliable and easy to install and repair. 3..13
3.2.2 The diagrams of the pneumatic system should comply with the provisions of GB78. 3.2.3 The pneumatic system adopts pneumatic components and auxiliary components must have a factory certificate and be accompanied by necessary technical data and specifications. 3.2. Equipment with a load of more than 15k must have a convenient installation method. 3.2.5 The pneumatic components and auxiliary components in the pneumatic system can be installed under the condition that they do not affect other components. 3.3 Technical performance
3.3.1 Technical performance of the pneumatic system Under normal working conditions, it meets the technical specifications of the pneumatic components and accessories. The technical specifications of the components and accessories used in the pneumatic system are shown in Table 1. Table
Component name
Air compressor
Air motor
Technical specification
1Rated output, m/h
2. Required auxiliary power, kw
3. Speed, /m
4. Rotation direction
. Serial number
1. Air pressure, m/h
2.Direction of movement (relative to the outlet) 3. Nominal size, MP, pressure range (under constant pressure) 7. Product engineering 1. Inner diameter of gas cylinder, m 2. Diameter of cylinder, mm 3. Cylinder seat, M, m Only suitable for gas motors Applicable to gas motors, gas cylinders, fuel tanks, fuel injectors, oil removers, refrigeration exchangers GB/T 12920-$1
Continued Table 10
Technical parameters
1.Power adjustment range, MPa
2.Power front diameter, nm
1.Voltage,
2.Current difference, A
8.Protection equal frequency
4.Nominal output power, MPa
5.Suitable size, mm
6.Special range, 8
3Switching frequency, H2
Pressure, MPa
3.Switch voltage and pressure, y, A
4.Protection equal frequency
1The weighted matching meets the rated requirements, MP12.Test capacity, m7 h
3. Column number
two, MP
2. ,
3. Overcurrent accuracy, m
4, airflow direction
5, diameter size, m and
standard, MP
2. Surface diameter, mm
3. Dynamic direction
Working pressure range, MP
2. Elimination efficiency, mg/m
3, diameter size,.
1 standard use, MP
2. Diameter of the diameter, m and
3. Processing volume, mh
4, environmental increase
5, and the original, item rate, attached size, V, Hz.A6. Insurance effect estimation, A
1. Cold m:
2. Factory inlet and outlet , mm
3. Implementation method
1, cooling (water, air>
5. Working environment quality, C
8.4 Basic design requirements
GBT12920-11
3.4.1 Pneumatic system should consider the metallographic properties and prevent accidents. 2: All components and transfer parts in the pneumatic system must have appropriate certificates, b. The pneumatic system should have over-protection measures, and the exhaust port design should try not to cause danger
Design the system to avoid danger
When using pneumatic components and accessories, they must strictly abide by the product specifications. When designing the pneumatic system, each component and accessory must be clearly marked with the name and number. The pipelines of the pneumatic system must be covered with signs on both sides, and the system Each part of the system should have a number: the system design must be reliable and reproducible. The pneumatic system adopts the life of the core parts.
The life of the pneumatic control unit should be less than 100,000 times. The life of the diaphragm of the gas heating element should be less than 100,000 times! The minimum gas price is not less than 3km1
The life of the gas source management device is not less than 000
The use instruction manual of the pneumatic system contains:
+Main technical specifications;
Simplified system schematic diagram:
Outer dimensions
Main technical performance:
Test method,
Fault detection: and force elimination method;
Avoid using the gas model quickly, and only require hidden oil, hidden water and dust removal. Gas source requirements
Gas Source: B4830:
Pneumatic system should comply with the provisions of G2.
3.5.3 It should be able to work normally within the range of air source pressure changes, and should not cause t5 when the instantaneous pressure exceeds 1.5 times the nominal pressure.
Pneumatic system design
West and the standard
design, if the air system has a stabilizing device, the air distribution should be allowed to change! . Change
8.6. (The energy consumption of the air system should comply with the technical indicators of the product. 3.5.5 The air source should be filtered and the foam content should be in accordance with the regulations of each product. 3.5.5 Pneumatic system components and accessories should be tested at 1.25 times the nominal pressure and should not have obvious air demand. 3.B Power Requirements
3.8.1 When the power supply is for power supply, the voltage change shall be 10% of the steady-state rate and the rate of change shall be 0% of the rated voltage. 3.6.2 The voltage change of direct power supply shall be +6% to -1% of the rated voltage. 3.6, the voltage change of 3-cell battery power supply shall be +3 to 25% of the rated voltage. 3.7 Materials
GB:T 12920—91
The materials of the pneumatic system shall be resistant to poison, salt spray, narrow passage, and non-deformation. 3.8 Pneumatic Alarm Channel
Enjoy. 3.8.1 The pneumatic system shall comply with G3033 standard. 3.8.2 The air velocity of the air passage shall not cause too large a rise, fall and impact. The new speed is not more than 30m. 3.8. The bends of the pneumatic pipeline should be smooth and not be bent. The inner diameter of the pipe should avoid sudden changes. 3.4 When installing a pair of pipes, the ends must be clean and free of any dirt (such as hair, dust, oxides, etc.). 3.8.5 When installing pneumatic pipes:
, when the length exceeds m, the pipe flow direction has a 3% degree of freedom. h. The branch in the pneumatic pipe must be connected to the main pipe. The highest point of the pipe should be equipped with a small opening to facilitate the installation of supports and traction. c. The pneumatic pipeline shall not be supported. The pipe must be supported and fixed with a headstock, and the support distance shall be in accordance with the provisions of Table 12. Bag 12
Tube adjustment outer diameter,
3- 10 -- 25
4 Test method
4.1 General inspection
Support spacing,
According to the requirements of 3.2, 3.3, 3.1 and 13.7, the design, material and workmanship of the product shall be inspected for appearance and quality, and all of them shall comply with the provisions of various technical parts.bZxz.net
1,2 For both tests
, the strength test of liquid or gas stop + test pressure is greater than or equal to 1.5 times the nominal pressure, and the pressure test time is not less than 3mn. 1.5 Sealing test
After the hydraulic pressure test, the nominal pressure of 125 is greater than or equal to 1.5 times the nominal pressure, and the pressure test time is less than 3m. 4,! Under the condition of a certain safety situation, the product is subjected to ventilation test: the test results of various technical parameters are in line with the technical specifications of the product.
4.5 The test method of environmental policy is in line with the provisions of B2423+CH*3225. 4.6 Power supply change safety 3.6 requires 15m test, all working heights are positive. 4.7 Shell protection type is not in accordance with the requirements of 3.1.11, and reverse inspection is carried out according to the method of B4208 specification. 6 Inspection regulations
5.1 New pneumatic core parts are divided into two types! Inspection and evaluation type inspection. 6.1.1! "These tests: Each product must be tested before it is put into production. 5.7.2 Type test: When the product is transferred to the factory for production. After the formal production, if there is a major change in equipment, technology or materials: When the inspection test results are not allowed to deviate from the necessary type test results: When the belt is in production, every four years or cumulative production of 1D sets. National 6.2 Test items: GB/T12920-91, ... The test must include general inspection, performance change, power consumption, vibration, tilt and exploration test.
6. Marking, packaging, transportation, storage and guarantee 6.1. Air components, systems and accessories should be equipped with adhesive labels. The lower corner of the nameplate should have an inspection mark. The product model and name, manufacturing name, manufacturing date (or terminal number) should be clearly stated on the nameplate!
t||Main technical data.
2 Marine gas components, systems and accessories 6.2.1
The gas equipment on the complete system should be sealed according to the 11-way sealing method to prevent contamination. 6.2.2 The external parts of the components, including the external parts of the shaft, the transmission shaft, etc. should be protected. 6.2.9 All pipes and external parts should be protected. 6.2.4
In the product packaging box, the following technical information (text or US version) is provided:
Product instructions:
Product accessories, list of equipment!
Packing list
System installation diagram.
6.3 Transportation
6.3.1 Products should be protected from vibration, moisture and vomiting to avoid damage during transportation. 5.3.2 The packaging and markings should comply with the regulations of GB191. 5.4
5.4.1 The power system should be stored in a place with good wind resistance and good ventilation, with the air filterability of 0-45 and the relative humidity of the air not exceeding 85%. B.4.2 The products in stock within two years will not affect the original performance. If the storage period exceeds one car, sampling test should be carried out. Additional explanation:
This standard is proposed by China Section Engineering Corporation. The purpose of this standard is to launch a national new machine standard installation technology. This standard is implemented by the ship design and research unit. This standard mainly defines one.
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