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MHT6031-2018: (Aircraft oxygenation equipment)
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MH/T 6031-2018
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Basic data | Standard ID | MH/T 6031-2018 (MH/T6031-2018) | | Description (Translated English) | (Aircraft oxygenation equipment) | | Sector / Industry | Civil Aviation Industry Standard (Recommended) | | Classification of Chinese Standard | V57 | | Word Count Estimation | 20,280 | | Date of Issue | 12/14/2018 | | Date of Implementation | 4/1/2019 | | Older Standard (superseded by this standard) | MH/T 6031-2003 | | Issuing agency(ies) | Civil Aviation Administration of China | MHT6031-2018: (Aircraft oxygenation equipment)---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Aircraft oxygen filling equipment
ICS 49.100
V 57
Civil Aviation Industry Standard of the People's Republic of China
Replace MH/T 6031-2003
Aircraft oxygenation equipment
2018-12-14 released
2019-04-01 Implementation
Issued by Civil Aviation Administration of China
Table of contents
Foreword...II
1 Scope...1
2 Normative references...1
3 Technical requirements...2
3.1 General requirements...2
3.2 Safety requirements...2
3.3 Oxygen compressor and filling system...3
3.4 Chassis...4
3.5 Environmental requirements...8
3.6 Vibration...8
3.7 Operation of oxygen compressor...8
3.8 Environmental requirements...8
3.9 Operational reliability...8
3.10 Driving reliability...8
4 Test method...9
4.1 General requirements...9
4.2 Safety requirements...9
4.3 Oxygen compressor and filling system...10
4.4 Chassis...11
4.5 Environmental requirements...12
4.6 Vibration inspection...12
4.7 Operation inspection of oxygen compressor...12
4.8 Environmental requirements...13
4.9 Work reliability inspection...13
4.10 Driving reliability test...13
5 Inspection rules...13
6 Signage, logo, instruction manual...15
7 Packaging, transportation, storage...15
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces MH/T 6031-2003 "Aircraft Oxygenated Vehicles". Compared with MH/T 6031-2003, the main changes are as follows.
-The name of the standard has been revised from the original "Aircraft Oxygenation Vehicle" to "Aircraft Oxygenation Equipment";
- Added general requirements (see 3.1);
--- Added safety requirements (see 3.2);
- Added technical requirements for fuel tanks and accessories (see 3.4.1.1);
--Added the technical requirements of the exhaust system (see 3.4.1.2);
--Added the technical requirements of the electrical system (see 3.4.1.3);
--- Added the technical requirements for electric aircraft oxygenation equipment (see 3.4.2);
--- Added technical requirements for towed aircraft oxygenation equipment (see 3.4.3);
- Increased maneuverability (see 3.4.4);
--- Added technical requirements for external lighting and optical signal devices (see 3.4.5);
--- Added technical requirements for the cab (see 3.4.6);
--- Added environmental protection requirements (see 3.5);
-Modified the test method (see Chapter 4, Chapter 4 of the.2003 edition).
This standard was proposed and interpreted by the Airport Department of the Civil Aviation Administration of China.
This standard is under the jurisdiction of the China Academy of Civil Aviation Science and Technology.
Drafting organizations of this standard. Civil Aviation Professional Engineering Quality Supervision Station, National Construction Machinery Quality Supervision and Inspection Center.
The main drafters of this standard. Chen Yinghao, Zhou Fushuang, Zhu Jingmin, Liang Shixin, Zhang Zixuan.
Aircraft oxygenation equipment
1 Scope
This standard specifies the technical requirements, inspection methods, inspection rules, signs, markings, instructions for use, packaging,
Transportation and storage.
This standard applies to the mutual filling of oxygen cylinders for aircraft, ground oxygen cylinders, gas cylinder groups, and ground cylinders to fill the gas cylinder groups.
Self-propelled, towed aircraft oxygenation equipment and simple towed aircraft oxygenation unit (hereinafter referred to as oxygenation equipment) with operational functions.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB 1495 Limits and measurement methods of noise outside the vehicle during acceleration
GB 1589 Road vehicle outline size, axle load and mass limit
GB 3847 Emission limits and measurement methods of visible pollutants from automobile exhaust with compression ignition engines
GB/T 3853 Acceptance test of positive displacement compressor
GB/T 4094.2 Marking of control parts, indicator lights and signal devices of electric vehicles
GB/T 4980 Measurement of noise of positive displacement compressor
GB 5099 steel seamless gas cylinder
GB 6388 Transport packaging receipt and delivery identification
GB 7258 Safety technical conditions for motor vehicle operation
GB/T 7777 Mechanical vibration measurement and evaluation of positive displacement compressor
GB 8982 oxygen for medical and aviation breathing
GB/T 8984 Determination of carbon monoxide, carbon dioxide and hydrocarbons in gases by gas chromatography
GB 9969 General Rules for Use of Industrial Products
GB/T 12241 General requirements for safety valves
GB/T 12536 Automobile sliding test method
GB/T 12543 Automobile acceleration performance test method
GB/T 12544 Maximum speed test method for automobiles
GB/T 12547 Lowest stable vehicle speed test method
GB/T 12673 Measuring method for main dimensions of automobiles
GB/T 12674 Method for determination of automobile quality (weight) parameters
GB/T 12678 Automobile Reliability Driving Test Method
GB/T 13306 signs
GB/T 14436 General Rules of Guarantee Documents for Industrial Products
GB 15382 General technical requirements for gas cylinder valves
GB/T 15487 Volumetric compressor flow measurement method
GB 16912 Deep freezing method production of oxygen and related gas safety technical regulations
GB 17691 Automobile compression ignition, gas fuel ignition engine and automobile exhaust pollutant emission limits and measurement methods (China Ⅲ,
Ⅳ, Ⅴ stage)
GB/T 18488.1 Drive Motor System for Electric Vehicle Part 1.Technical Conditions
GB 20891 Limits and measurement methods of exhaust pollutants from diesel engines for non-road mobile machinery
GJB 150.3A Military equipment laboratory environmental test method Part 3.High temperature test
GJB 150.4A Military equipment laboratory environmental test method Part 4.Low temperature test
JB/T 5943 General technical conditions for welding parts of construction machinery
JB/T 6896 Surface cleanliness of air separation equipment
TSG 21 Safety Technical Supervision Regulations for Stationary Pressure Vessels
MH/T 0023 Graphical symbols for aircraft ground service equipment
QC/T 484 Automotive paint coating
QC/T 625 coating and chemical treatment layer for automobile
3 Technical requirements
3.1 General requirements
3.1.1 All purchased parts of oxygenation equipment should meet the requirements of relevant national standards or industry standards, and have relevant certification documents and factory qualification certificates.
3.1.2 The welding of the structural parts of the oxygenation equipment shall comply with the requirements of JB/T 5943.
3.1.3 The paint coating of the oxygenation equipment should meet the requirements of QC/T 484.
3.1.4 The coating and chemical treatment layer of the oxygen-filling equipment components shall meet the requirements of QC/T 625.
3.1.5 When the oxygenation equipment adopts the riveting process, the rivets should be arranged neatly, and there should be no skew, crush, looseness or head mutilation. Oxygenation
There should be no sharp edges or corners at all parts of the equipment.
3.1.6 The electrical installation of oxygenation equipment should conform to the electrical schematic diagram, and each terminal should have obvious marks that are not easy to fall off. Connecting parts of oxygenation equipment,
Fasteners should be connected reliably, and anti-loosening devices should be provided. The tools and accessories of oxygenation equipment should be fixed and reliable.
3.1.7 The oil circuit and gas circuit system pipelines of oxygenation equipment should be neatly arranged, firmly clamped, and should not rub or collide with moving parts.
3.1.8 The oxygenation equipment should be free of oil, water or air leakage.
3.1.9 All electrical components and wiring harnesses of oxygenation equipment should be neatly arranged and firmly fixed, and appropriate protective measures should be taken.
3.1.10 The oxygenation equipment should have proper lighting, and the vertical illuminance of the instrument operation cabinet and workbench should not be less than 80 lx.
3.1.11 The signs and signs of the oxygenation equipment should be correct, eye-catching, clear and securely installed. The location that is easy for the operator to observe should be equipped with a filling flow.
Schematic sign of the process. The label specifications should meet the requirements of GB/T 13306.
3.1.12 There should be enough space for operation and maintenance of oxygenation equipment.
3.1.13 Traction devices should be provided at the front and rear of the frame of the oxygenation equipment.
3.2 Safety requirements
3.2.1 Suppliers of commercial chassis and self-made chassis shall provide vehicle CAN bus communication standard interface protocol and vehicle operation information.
3.2.2 The anti-static grounding of oxygenation equipment should meet the requirements of GB 16912.
3.2.3 The oxygenation equipment should have a leak self-check alarm device. In the event of an oxygen leak, you should detect and alarm by yourself.
3.2.4 The protection level of the electric control box, control components, and electrical connections outside the cab of the oxygenation equipment shall not be lower than IP55.Self-propelled oxygenation device
The electric control box, control components, and electrical connections in the standby cab should not be affected by rain, and the installation position should be the same as that of the easy access part of the cab
Effective isolation.
3.2.5 A C-type low-intensity aviation obstruction light that meets the requirements of MH/T 6012 should be installed on the top of the oxygenation equipment. There should be
Red and white reflective logo.
3.2.6 Oxygenation equipment or its adjacent operating area should be equipped with at least one 8 kg dry powder fire extinguisher that is easily accessible and equipped with special oxygen fire extinguishing equipment.
The location should be clearly marked.
3.2.7 The obvious parts on both sides of the oxygenation equipment compartment should be marked with "no oil", "no fire", and "no cell phone calls" signs, which should be in the obvious parts
There is an "oxygen" logo, and the font height should not be less than 100 mm.
3.2.8 The oxygen compressor and gas cylinder (tank) of the oxygenation equipment should be equipped with safety protection devices, and the dangerous parts should be equipped with warning signs.
3.2.9 The gas cylinders (tanks), safety valves, and pressure gauges used in the oxygenation equipment should have a safety certificate or quality assurance certificate. Operating valve, oxygenated soft
The pipe shall have a certificate of ex-factory, and the date of ex-factory shall be marked at the joint of the oxygenated hose.
3.2.10 When the oxygenation equipment is started and the oxygenation operation, the control system should have an automatic monitoring function and display the main parameters.
3.2.11 In an emergency, the oxygenation equipment should be able to give an alarm and be equipped with an emergency shutdown device within reach.
3.2.12 Oxygenation equipment should be equipped with over-temperature and over-pressure alarm protection devices and emergency shutdown functions.
3.2.13 The connection of the driving mechanism, transmission device and oxygen compressor moving parts of the oxygenation equipment should be reliable, and a firm locking device should be provided.
3.2.14 The oxygen compressor of the oxygenation equipment should not leak air at 1.15 times the working pressure. Main pressure components such as pressure pipelines work at 1.5 times
Under pressure, there should be no leakage.
3.2.15 The gas cylinder should meet the requirements of GB 5099 and be fixed according to the requirements of EN 12312-18.The cylinder should be effective with the engine or exhaust system
Isolate to prevent the cylinder temperature from becoming too high. The gas cylinder valve should meet the requirements of GB 15382.
3.2.16 The oxygenation equipment should be equipped with protective measures to prevent mechanical damage to the cylinder valve.
3.2.17 The safety valve should meet the requirements of GB/T 12241.The opening pressure and the maximum discharge pressure shall comply with the regulations of TSG 21.
3.2.18 The filling system of oxygenation equipment shall be equipped with an oxygen pressure gauge on the low pressure side. The accuracy level of the oxygen pressure gauge on the control panel should not be lower than
1.6 level.
3.2.19 The electrical system wiring of the filling system of oxygenation equipment shall have protective measures, and no short circuit or open circuit shall occur. The wire should be flame-retardant wire,
The normal insulation resistance of wires and sensor leads should not be less than 50 MΩ.
3.2.20 The pipes, valves, pipe joints, etc. of the filling system of the oxygenation equipment should not be stained with grease. The filling system should be leak-free and well sealed. should
Set up high-pressure shut-off valves for supply, filling, circulation, pressurization, venting, blow-off, etc. that meet the requirements of GB 16912.Flange and threaded connection
The maximum value of the jumper resistance should be less than 3 Ω.
3.2.21 The length of the oxygenation hose should not be less than 10 m, and the hose should be equipped with protective measures, and it should be made of medical grade materials.
3.2.22 The cab of self-propelled oxygenation equipment should be effectively isolated from the oxygenation system to prevent oxygen from entering the cab.
3.2.23 Self-propelled oxygenation equipment shall ensure that the oxygenation equipment can be driven by the vehicle power take-off only when the vehicle is placed in neutral or parked gear.
3.2.24 The self-propelled oxygenation equipment should be set in the working state to ensure that the interlocking device cannot drive the vehicle.
3.3 Oxygen compressor and filling system
3.3.1 Oxygen compressor
3.3.1.1 Volume flow
The volumetric flow rate of the oxygen compressor should be under the conditions of suction temperature of 20 ℃, suction pressure (absolute pressure) of 0.1 MPa, and suction relative humidity of 0%RH.
Not less than 95% of the design value.
3.3.1.2 Exhaust pressure
When the oxygen compressor is pressurized at different pressure ratios according to the bottle-to-bottle, group-to-group, and group-to-bottle modes, it should be able to reach the designed exhaust pressure value.
3.3.1.3 Filling time
When the oxygen compressor presses the bottle-to-bottle, group-to-group, and group-to-bottle modes, respectively, when pressurizing and filling with different pressure ratios, the filling time should meet the design requirements.
3.3.1.4 Exhaust temperature
When the oxygen compressor is working at the rated pressure, the exhaust temperature should not exceed 160 ℃.
3.3.1.5 The difference in oxygen purity before and after pressurization
After being pressurized by the oxygen compressor, the purity of the oxygen before and after pressurization should be no more than 2.5×10-6 (for diaphragm compressor).
3.3.1.6 Oxygen quality
After the oxygen is pressurized, purified and dried, its purity, moisture, odor, solid particles, flammability and non-toxicity shall meet the requirements of GB 8982
Regulations. The adsorbent capacity in the drying bottle should be able to meet the continuous operation of the oxygen compressor for 30 min (applicable to piston compressor).
3.3.1.7 Avoid oiliness
The surface of all parts that are in direct contact with oxygen should be degreased and recorded, and the amount of grease residue should not exceed 125 mg/m².
3.3.1.8 Safety protection
The exposed moving parts of the oxygen compressor and the dangerous parts of the filling system should be equipped with safety protection devices. The discharge port of the safety valve should avoid the operator station
Stand-alone orientation and monitoring instrument and battery.
3.3.1.9 Transmission
The transmission device of the oxygenation equipment should meet the requirements of the oxygen compressor. The transmission device should be connected reliably, and the oxygenation equipment should be the same when working at full load
Noise, overheating or oil leakage.
3.3.1.10 Speed regulating device
The oxygenation equipment should be equipped with a speed regulating device so that the oxygen compressor can still operate stably and reliably after the working conditions change.
3.3.1.11 Material safety
Oxygen compressor and filling system should not use flammable materials or materials that are prone to sparks during exercise. In rated work
Under the circumstances, the materials used in the parts in contact with oxygen should not be thermally decomposed and endanger human health. The pipes and valves in contact with oxygen should be made of copper
Alloy and other materials that meet the requirements of GB 16912.
3.3.2 Filling system
3.3.2.1 The oxygenation connector should be equipped with a connector that matches the aircraft oxygenation interface.
3.3.2.2 The design of the filling system pipeline should be able to achieve the following functions;
a) Airplane oxygen cylinder filling;
b) Filling of ground oxygen cylinders;
c) Mutual filling of oxygen cylinders;
d) Supplementary filling of ground cylinders to the cylinder group.
3.4 Chassis
3.4.1 Internal combustion
3.4.1.1 Fuel tank and accessories
The location of the fuel tank and accessories should meet the following conditions.
- Maximum protection from impact;
--Ensure that the fuel does not drip onto the engine, exhaust system or electrical components.
3.4.1.2 Exhaust system
The exhaust system outside the engine manifold should be fixed, and the location should meet the following conditions.
--The distance from flammable materials is not less than 76 mm;
--The distance from the fuel, hydraulic and electrical systems is not less than 50 mm;
--Avoid oil dripping on the exhaust system;
--Ensure that the exhaust will not cause harm to personnel or other materials and equipment, and the exhaust direction should avoid aircraft and oxygenation devices.
3.4.1.3 Electrical system
The distance between the electrical circuit and the outer surface of the fuel tank and the fuel pipe should not be less than.200 mm. The electrical system should be equipped with safety protection devices.
A power switch should be set in the starting line of the whole vehicle.
3.4.2 Electric
3.4.2.1 General requirements
3.4.2.1.1 The markings of control parts, indicators and signal devices shall comply with the requirements of GB/T 4094.2.
3.4.2.1.2 Obvious warning signs shall be provided on the power battery box and high-voltage components. The power battery box should be clearly marked
Identify the chemical type of the power battery.
3.4.2.1.3 Electric oxygenation equipment should have a safe approach function. When the accelerator pedal is not controlled, it can start smoothly and drive at low speed, and
No impact.
3.4.2.1.4 Electric oxygenation equipment should go through at least two steps from the "power off" state to the "driving" state. should
Set up a device to prevent unauthorized personnel from starting oxygenation equipment.
3.4.2.1.5 When the electric oxygenation equipment is externally charged, it shall have a charging stop function.
3.4.2.1.6 The charging circuit of electric oxygenation equipment shall be isolated from the chassis.
3.4.2.1.7 After abnormal power failure, the drive system should automatically switch to the standby state.
3.4.2.1.8 Obvious working status indication signals should be set on the operation console, and the graphic symbols should comply with the regulations of MH/T 0023.
3.4.2.1.9 Electric oxygenation equipment using battery packs with a voltage greater than 60 V, its power system should be isolated from the chassis, and the power system should have a high voltage
The conductive shell of the component shall be equipotentially connected with the chassis.
3.4.2.1.10 Electric oxygenation equipment should be equipped with a power cut-off switch independent of the control system. 3 s～5 s when the driver leaves the driving position
After that, it should be able to automatically disconnect the main driving circuit.
3.4.2.1.11 The driving motor should be equipped with an overcurrent protection device, and the steering motor should be equipped with a short-circuit protection device. Electric oxygenation equipment is in positive
In the normal driving state, when the steering wheel is placed at the maximum steering angle, the steering motor should be able to work continuously and stably.
3.4.2.1.12 A red mushroom-type main power emergency disconnect switch and a mechanical power supply shall be installed at a position within the reach of the driver’s hands.
Battery power cut-off switch.
3.4.2.1.13 The power supply of the power system shall adopt a two-wire loop design. When the auxiliary circuit is electrically connected to the power system, the auxiliary circuit shall be prevented
The voltage is too high.
3.4.2.1.14 The cable connector should match the power cable, and the crimping should be firm, and its protection level should not be lower than IP55.Voltage at 60 V
(DC) Cable connectors above (inclusive) should be equipped with locking devices, and orange-red high-voltage wires should be used.
3.4.2.1.15 When the remaining power of the power battery reaches the lower limit, an audible and visual warning signal should be set, and the aircraft oxygenation equipment should be
Under the open power supply state, it can drive to the charging area (the driving distance is not less than 1 km).
3.4.2.1.16 Aircraft oxygenation equipment using battery packs with voltages of 60 V and above shall be protected against electric shocks at all parts
Protective measures, and have a "high voltage danger" sign.
3.4.2.2 Insulation
3.4.2.2.1 The insulation class of the motor should not be lower than class H.
3.4.2.2.2 No silicone material should be used for any part of the motor.
3.4.2.2.3 When working at the temperature limit of the insulation class, the electrical and mechanical properties of the enameled wire should not be reduced, even if it is connected under the specified working system.
Continue to work, the enameled wire should not lose its insulation.
3.4.2.2.4 Under the maximum operating voltage, the minimum insulation resistance of the DC circuit should be greater than 100 Ω/V, and the minimum insulation resistance of the AC circuit
The value should be greater than 500 Ω/V.
3.4.2.2.5 Creepage distance
Calculate the creepage distance between the two battery connection terminals according to formula (1).
3.4.2.3 Battery
3.4.2.3.1 The battery should be placed in a battery box with a cover. The distance between the metal cover and the live parts of the battery should not be less than 30 mm,
Insulating material should be attached to the inner top surface of the battery cover.
3.4.2.3.2 Apply a force of 980 N to the 300 mm×300 mm area of the cover plate, and the cover plate should not contact the terminal surface. Cover
In normal use, it should be tightly closed without movement.
3.4.2.3.3 For aircraft oxygenation equipment using lead-acid batteries, the battery box and its cover shall be provided with appropriate ventilation holes.
3.4.2.3.4 For aircraft oxygenation equipment using lead-acid batteries, the inner surface of the battery box should be resistant to chemical corrosion from the electrolyte. The battery box should
Take protective devices to prevent electrolyte from flowing to the ground.
3.4.2.3.5 The battery and its cabinet shall be installed firmly and easy to disassemble.
3.4.2.3.6 The protection level of power battery systems (except lead-acid batteries) shall not be lower than IP67.
3.4.2.3.7 Batteries (except lead-acid batteries) should be equipped with battery management systems and online insulation testing devices.
3.4.2.4 Motor
3.4.2.4.1 The motor and its controller shall meet the requirements of GB/T 18488.1.
3.4.2.4.2 The driving motor should adopt S2 60min, S1 and S9 work systems, and the motor protection level should not be lower than IP55.
3.4.2.4.3 If a steering motor is selected, S2 30 min, S2 60 min or S1 working system should be adopted, and its protection level should not be lower than
IP55.The steering motor should be able to ensure that the comprehensive stress and temperature rise experienced will not cause any component failure or excessive deformation.
3.4.2.4.4 When the electric oxygenation equipment needs to drive by ...
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