Positive pressure fire air breathing apparatus type I
Product Classification:
Personal Protective Equipment
Personal Protective Equipment
Personal Protective Equipment
Personal Protective Equipment
Personal Protective Equipment
Keyword:
Positive pressure fire air breathing apparatus type I
Product Features
Product Details
Conforming to the StateXF124-2013 the standard of "positive pressure fire air breathing apparatus", a copy of the inspection report of the National Fire Equipment Quality Supervision and Inspection Center has been provided.Fire product certification has been provided.
General 1. requirements1. The respirator is a positive pressure single-bottle air respirator with a cylinder capacity of 6.8L. On the basis of one cylinder inherent in the respirator, the rated working pressure is 30MPa.2. The material in direct contact with the wearer's skin on the respirator is non-irritating to the skin and harmless to human health.3. The pressure gauge window is made of materials that do not produce fragments when broken.4. The explosion-proof performance of electrical components shall not be lower than the ExiaIICT3 level in GB3836.1-2010 and GB3836.4-2010.5,Service life of pressure reducing valve≥ 15 years.
2. structural requirements
1. The structure of the respirator should be simple and compact, and it can be worn and used by itself without help. The respirator will not be hung when the passage is narrow.2. The wearer can continue to breathe from the respirator when the wearer is still wearing a full mask on the back of the respirator.
3. The outer part of the cylinder is provided with protective cover.4. The installation position of the cylinder valve is convenient for the wearer to open or close the cylinder valve, and the cylinder can be quickly connected with the back support.5. The pressure gauge displays the cylinder pressure after the cylinder valve is opened, and its installation position is convenient for the wearer to observe the pressure value.
6. The surface of the part that the wearer may touch is free of sharp edges and corners.7. The cylinder valve is connected with the pressure reducer, and the full mask is connected with the air supply valve reliably without special tools. If the seal is used at the connection, there is no dislodgement or displacement.
8. The structural modeling of the back is in line with the principle of ergonomics, so that the wearer has no local pressure pain; the back belt can adjust the length, and no slippage occurs after fastening.9. The medium pressure airway is connected with the input connector on the air supply valve connecting pipe through a three-way output connector (one of which has a protective sleeve). The air supply pipe can be plugged and unplugged with pressure, and one end can be connected to the other rescue mask, or the medium pressure airway can be directly output from the pressure reducing valve to connect to the other rescue mask.10. The top of the mask is made of flame-retardant and wear-resistant fibers.
3. material requirements
1. The back harness, back harness belt, buckle and cylinder protective sheath have flame retardant performance.2. The combustion time of the full mask, medium pressure air duct and air supply valve after the flame retardant performance test is 0s, and after the air tightness performance test of the whole machine is continued, the pressure indication value of the pressure gauge decreases = 0MPa within 1min.3. Non-metallic materials after thermal aging test(1) Continue the air tightness test of the whole machine, and the pressure indication value of the pressure gauge will drop = 0MPa within 1min.(2) After the pressure test, there is no air leakage and abnormal deformation of the medium pressure airway.
4.Wearing quality10.6kg(Cylinder pressureat 30MPa)After the air tightness test of the 5. respirator, the pressure indication value of the pressure gauge is1min drop within = 0MPa.
6. dynamic respiratory resistance1. When the cylinder pressure is in the range of 30MPa-2MPa and the breathing volume is 40 × 2.5L/min, the positive pressure is always maintained in the full mask.2. When the cylinder pressure is in the range of 2MPa-1MPa and the breathing volume is 25 × 2L/min, positive pressure should always be maintained in the full mask,expiratory resistance527Pa。
High temperature resistance of 7.1. After the high temperature resistance test, the parts shall be free of abnormal deformation, adhesion, degumming, etc.2. Breathe at a respiratory frequency of 40 times/min and a respiratory flow of 100L/min, and maintain positive pressure in the full mask of the respirator. Respiratory resistance ≤ 630Pa.
Low temperature resistance of 8.1. After the low temperature resistance test, there is no cracking, abnormal shrinkage and brittleness of the parts.2. Breathe at a respiratory frequency of 25 times/min and a respiratory flow rate of 50L/min, and maintain positive pressure in the full mask of the respirator.
Radiation heat resistance of 9.After the radiant heat resistance test of full mask, air supply valve and medium pressure air duct:1The cylinder pressure isWithin the range of 30MPa-2MPa and the respiratory volume of 40 × 2.5L/min, positive pressure should always be maintained in the full mask,inspiratory resistance22Pa.
10.The static pressure is257Pa，and≦ the opening pressure of the exhaust valve.
11. Alarm performance (pneumatic alarm)1. Alarm pressure: 5.5MPa. The siren gives a continuous audible alarm.2. 90dB continuous sound alarm time> 15s.3. Continue to alarm: After that, the alarm will continue to alarm until the cylinder pressure drops to 1MPa.
XII. Full Mask Performance1. The headband or hood can be adjusted freely according to the needs of the wearer's head. The face screen has a wide field of view, has the characteristics of impact resistance, high temperature resistance, low temperature resistance, flame resistance, good sealing, suitable for Asian face shape, comfortable to wear, and the size and model of the mask are optional.2. The total visual field retention rate is 81.5.3. The binocular visual field retention rate is 68.4%.4. Lower field of view> 35 °.5,In inhalation gasCO2 volume content 0.88%.
XIII. Pressure Reducing Valve Performance1. The design value of the pressure reducing valve output pressure is in the range of 0.64-0.77MPa.In the range of 30MPa-2MPa, the output pressure of the pressure reducing valve should be within the design value (0.64-0.77MPa).3. The pressure adjustment part of the pressure reducer valve is provided with a locking device.4. A safety valve is set at the outlet of the pressure reducer valve.
XIV. Safety Valve Performance
1. The opening pressure and full exhaust pressure shall be within 110-170% of the maximum design value of the output pressure of the pressure reducer.2. The closing pressure ≥ the maximum design value of the output pressure of the pressure reducer.
XV. Performance of Air Supply ValveAutomatic positive pressure mechanism can be set.
XVI Pressure Gauge
1. The pressure gauge is a pointer type pressure gauge. The outer shell of the pressure gauge shall be provided with a rubber protective cover. The minimum value of the measuring range is 0, the maximum value is ≥ 35MPa, the accuracy is ≥ 1.6, and the minimum dividing value is ≤ 1MPa. The pressure indication value can be read in dim or dark environment.2, after 24h underwater 1m immersion, there should be no water in the pressure gauge.3. After removing the pressure gauge and connecting pipe from the respirator,InThe air leakage under the pressure of 20MPa is 12.5L/min.
17. Pressure head-up display device1. General requirements: the pressure head-up display device adopts wireless connection. The pressure head-up display device does not hinder the wearer's line of sight and head rotation, and regardless of whether the head swings or not, the wearer sees the working state of the LED. The pressure head-up display device is built In the mask, it can simultaneously display the power information of the pressure head-up display device and the transmitting device.2. Pairing between the transmitting device and the display device: When a wireless connection is adopted, the pairing between the transmitting device and the display device should be unique. The launcher shall be integrated in the airback support, the overall weight of the construction.3. Working time under low voltage state> 2h.4. Explosion-proof performance of the device: not lower than the ExiaIICT3 level in the GB3836.1-2010 and GB3836.4-2010.
XVIII. Connection StrengthConnection strength between full mask connector and air supply valve, air supply valve and medium pressure air duct, input connector and output connector>250N。
XIX. Strength of High Pressure ComponentsNominal working pressure of metal high-pressure parts by gas cylinderNo leakage and abnormal deformation occurred after 1.5 times hydraulic test.
20. Quick plug connectorThe connection between the input joint and the output joint shall be convenient and reliable, without air leakage after connection, and can be self-spraying.
XXI CylinderCylinder meetsGB28053-2011 to the provisions of the "breathing apparatus with composite cylinders", aluminum liner carbon fiber full winding composite cylinders. The cylinder has a nominal pressure of 30MPa and a nominal volume of 6.8L. After the cylinder is inflated to 30MPa and cooled to normal temperature, the pressure drop within 7 days shall be ≤ 1MPa. The cylinder is marked with "compressed air, unique number of the cylinder, hydraulic test pressure, nominal working pressure, nominal volume, weight, production date, inspection cycle, service life, product implementation standard number" and other marks. Flame retardant gas cylinder protective sleeve with the words "Ningxia Fire", the main body of the protective sleeve is red, orange and other warning colors.
XXII. Cylinder Valve1. General requirements: The opening direction of the gas cylinder valve is counterclockwise. The gas cylinder valve will not be closed unintentionally after opening. There is a locking device in the rotation direction of the closed gas cylinder.
2. Bursting pressure of safety diaphragm: 41.6MPa.3. Size of output end:(1) Thread size: G 5/8.(2）Thread length18.9mm。(3) Other sizes: Ф 11.1, 21.85, 8.09.
XXIII. Practical PerformanceThe respirator is convenient and quick to wear and remove. Wear comfortable, balanced, no local pressure pain. The back strap can be adjusted in length and does not slip off after fastening. Buckle and attachment not loose after tightening. The headband or hood of the full mask should be able to adjust freely according to the needs, and it is convenient and fast to wear and take off. The close frame fits well with the face without obvious pressure pain. Line of sight and call shall be clear. Cylinder valves and pressure gauges should be within reach. The subject could hear the alarm. The medium pressure airway does not affect the free movement of the head. Breathe well. No discomfort.
XXIV. Signs1. There are models, supplier names or registered trademarks on the full face mask, air supply valve, pressure reducer, alarm, medium pressure air duct, back gear, gas cylinder and gas cylinder valve of each respirator.2. The back of each respirator has "manufacturer's name, product name and model, production date and batch number, certification mark" and other signs.
XXV. Packaging1. Each respirator has a fixed packing box, which has shockproof and pressure-proof functions. The packaging box is clearly marked with "manufacturer's name, address, product name and model, production date and batch number, product implementation standard code" and other signs.2. There are "Chinese use and maintenance manual, packing list, certificate of approval, spare parts and tools (with not less than 3 sets of vulnerable parts such as original O-ring and explosion-proof film)" in the packing box ". The use and maintenance manual has the following contents: use methods and safety precautions; Guidance on maintenance, disinfection, storage and inspection; Failure, cause and troubleshooting method; Description of the air composition in the cylinder; Other necessary instructions, etc.)Equipped with simple repair kit; equipped with common vulnerable accessories.
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