Technical standard of laboratory air compressor

Technical Standard No of laboratory air compressor: qc-at200910-1100f I subject content and scope of use 1 This standard specifies the terms, technical requirements, test methods and test rules of laboratory air compressor 2 This standard is applicable to the top 750, 550, 100, 1100f miniature to resurrection plug air compressor (hereinafter referred to as air compressor) 3 This standard is the enterprise standard of Ruian Aite electromechanical Co., Ltd Two, reference standards: 1, GB 3835 general positive displacement air compressor performance test method 2 GB 4980 determination of noise power level of positive displacement compressors engineering method 3 QC / T 29078-92 specification of air compressor for automobile 4 J8 product label 5, JB 2759 general technical conditions for packaging of mechanical and electrical products 6、 Technical specifications for piston of ZB T24001 automobile air compressor 7 ZB t24002 automobile air compressor piston ring technical conditions 3、 Terminology 1 Calibrated exhaust pressure PE: Zui high working pressure (gauge pressure) suitable for matching equipment requirements 2 Rated speed n e: Zui high working speed suitable for matching equipment requirements 3 Calibrated exhaust volume QE: Zui small exhaust volume suitable for matching requirements under the calibrated condition Note: the calibration condition refers to the condition when the first stage suction pressure is 0.1MPa (pressure), suction temperature is 293k, relative humidity is zero, exhaust pressure is the calibration exhaust pressure and crankshaft speed is the calibration speed 4 Calibration shaft power ne: the actual consumption of Zui high power under the calibration condition 5 Volume specific energy Q: the energy consumed in the production of compressed air per unit volume Its value is calculated according to the following formula: q = n / Q for example: * calculation of 100F air compressor: q = n / Q = 1.2 (1.2 is the actual Zui high power n consumed by top 1100f) / 0.12 (0.12 is the Zui small exhaust volume Q consumed by top 1100f) = 10 6 Volumetric efficiency (inflation coefficient) η, calculation formula: η = q / (VN × n e) for example: Calculation of * 100F air compressor 0.12 (0.12 is Zui small exhaust volume Q of * 100F) / (0.0001558 × 1400) (0.0001558 is the volume swept by the connecting rod head in one cycle of motor operation, i.e working volume VN, 1400 is the motor speed Ne) =0.55015587749 。 7 Speed characteristics: under the condition of constant exhaust pressure, the relationship between the exhaust volume, shaft power and exhaust temperature of the air compressor with the change of speed 4、 Technical requirements 1 The air compressor shall comply with the provisions of this standard and be manufactured in accordance with the product drawings and technical documents approved by the specified procedures 2 Parts and accessories shall be inspected according to relevant technical documents before assembly 3 The cylinder diameter of top 1100f air compressor is 69mm Cylinder stroke: 22mm The cylinder diameter of top750 air compressor is 63.7mm Cylinder stroke: 17mm The cylinder diameter of top550 air compressor is 63.7mm Cylinder stroke: 13mm 4 The rated exhaust pressure PE is divided into 0.6MPa \ \ \ \ \ \ \ 0.7MPa \ \ \ \ \ 0.8MPa Zui high pressure 0.9 MPa can be achieved for customers It is strongly recommended that the working pressure should not exceed 0.85 MPa 5 The measured exhaust volume of the air compressor under the rated working condition shall not be less than the rated exhaust volume 6 Under the calibration condition, the measured shaft power of the air compressor shall not be greater than the calibrated shaft power 7 The volume specific energy of the air compressor is less than or equal to 10 (without working pressure) When the working pressure is 0.7MPa, the volume specific energy Q is less than or equal to 10.5, and the working pressure is 0.8MPa, the volume specific energy Q is less than or equal to 11 8 The volumetric efficiency (inflation coefficient) η of the air compressor is greater than or equal to 50% (no working pressure), the volumetric efficiency is greater than or equal to 48% when the working pressure is 0.7MPa, and the volumetric efficiency is greater than or equal to 45% when the working pressure is 0.8MPa 9 Air tightness: the air compressor connected with 6-litre air storage tank lasts for 5 minutes under the rated pressure, and the cylinder pressure drop value is less than 0.1MPa (the air compressor is a plate valve) 10 The exhaust temperature, noise level and oil displacement with gas of air compressor can reach under the test conditions of wind speed of 1-8m / s: the exhaust temperature K is less than or equal to 473, the noise level is less than 80 dB, and the oil displacement with gas is less than or equal to 0.005 (the air compressor is oil-free, and the oil detected must be the air from the surrounding oil) 11 Air cleaning grade: filtration accuracy (pre filtration less than 100 μ m), particle content less than 170 mg 12 Air connection seal 13 Air compressor motor winding insulation class B 150 degree (plus or minus 5 degrees) protection switch is built in the motor 14 The insulation safety level of the exposed part of the air compressor meets the medical standard level 15 After 1.5MPa pressure test, the cylinder head shall not leak for 5 minutes 16 The piston ring of air compressor meets the requirements of ZB t24002, and the plug of air compressor meets the requirements of ZB t24001 17 According to the conditions specified in the product manual, the service life of vulnerable parts of air compressor shall meet the following requirements: part name service life (hour) valve plate 3000 or more piston rings 3000 or more cylinder liner (connecting rod bush) 3000 or more bearings When the durability of air compressor is more than or equal to 10000 18, after 500 hours durability test, the volume efficiency drop shall not be more than 7%, and parts shall not be replaced during the test 19 The air compressor surface is clean, the paint surface is smooth, and the heat-resistant paint with good heat conduction is used 20 The air compressor must be equipped with a high-precision air filter less than 100 microns, which can not be used to pump flammable and explosive gas, nor can it be used in flammable and explosive environment 5、 Test method 1 The air compressor exhaust capacity, shaft power, exhaust temperature, exhaust pressure, speed test shall be carried out in accordance with the provisions of GB 3853 2 The noise of air compressor shall be in accordance with the provisions of GB 4980 3 The cleanliness of the air compressor shall be in accordance with the provisions of GB 3821 The quality of impurities contained in the assembly of the air compressor shall be measured by using 5-micron microporous filter membrane without solving problems 4 Air tightness test method of air compressor: a test equipment: a stopwatch with a capacity of 6 L, a marked value of plus or minus 0.1% error, and a pressure gauge with a precision of level 1 B test procedure: close the vent valve of the storage tank and make the air compressor blow into the gas storage tank When the pressure is higher than the calibration pressure 0.05MPA, the air compressor stops working, and the exhaust valve is adjusted after stopping for 2 minutes, so that the air pressure drops to the calibration pressure, the valve is closed, and the 5 minute pressure drop value is recorded 5 Air compressor exhaust oil content test, the air compressor referred to in this standard is oil-free air compressor, and the machine and parts are oil-free So oil content can not be tested 6 Durability test: measure the exhaust volume, shaft power and exhaust temperature under the calibrated working condition before test a B the test wind speed is 1-8m / s under the rated working condition for 500 hours C after 500 hours durability test, test the exhaust volume, shaft power and exhaust temperature And compared with the data before the test 6、 Inspection rule 1 Delivery inspection: the air compressor must be run in for more than 4 hours before delivery The following items must be inspected before delivery of air compressor (see attachment at / js-0705-224) 2 Type inspection: type inspection shall be carried out in case of any of the following circumstances: a trial production of new products or old products transferred to the factory B after formal production, the product has significant modification, which affects the product performance C The production of the product is resumed after being stopped for more than one year D the factory inspection is quite different from the last type inspection E periodic inspection shall be conducted regularly after normal production B type test items: all items specified in Article 4 of this standard C no less than 3 sampling machines for type inspection 3 Sampling test shall be carried out every month after delivery The main test items are part of type test and delivery test items The annual output is less than 30000 sets, and the monthly test is no less than 3 sets When the annual output is more than 30000 sets, the monthly inspection shall not be less than 6 sets 4 The durability test shall be conducted once a year for 500 hours 7、 Label, package and storage 1 Each air compressor is provided with a label according to JB 8 2、 Label content: brand, model, manufacturer name, factory time, factory number, pressure, exhaust volume, power, voltage frequency, weight and other parameters 3 The packaging of air compressor shall be in accordance with the provisions of JB 2759, and the vulnerable parts, spare parts, tools and accessories of air compressor shall be packed and fixed in the box with special bags The pipeline interface shall be blocked and the technical data shall be sealed with plastic bags 4 Before leaving the factory, pay attention to moisture-proof and rust proof, prevent dust from entering, and ensure no rust damage within 6 months after delivery 5 Each air compressor shall provide the following technical documents: operation manual, product certificate and packing list Appendix: at / js-0705-224 technical document is an integral part of this standard Additional note: this standard is the enterprise standard of Aite mechanical and Electrical Co., Ltd., which is modified on the basis of the automobile industry standard of the people's Republic of China - technical conditions of air compressor for automobile (QC / t29078-92)