Some standard content:
ICS 23.140
J72
JB
People's Republic of China Machinery Industry Standard JB/T6430—-2002
Replaces JB/T6430—1992
General spray Oil injected screw air compressor
Oil injected screw air compressor for general use Released on 2002-12-27
Implemented on 2003-04-01
Foreword released by the National Economic and Trade Commission of the People's Republic of China|| tt||Scope,
2
3
4
5
6
Normative reference document
Term and definitions, symbols.
Model and basic parameters
Requirements
Medium volume and national quantity
Test method
Inspection rules
7.1
7.2
7.3
Inspection type.
Type inspection
Sampling inspection,
7.4 factory inspection,
8 marking, packaging and storage.
Quantity r
Object
Appendix A (Normative Appendix) Compressed Air Dew Point Temperature Chart. Appendix B (Normative Appendix) Allowable Eccentricity Table 1 Performance Parameters (-||tt ||Table 2 Cooling water consumption.
3 Performance parameters (2)
Table 3
Table 4 cleanliness value
Table 5
-times Sampling plan
+
times
++++++++++++++++--++
-+++heart| |tt||--
JB/T 6430--2002
6
Foreword
This standard is a reference to JB/T6430--1992 "General Fuel Injection Revision of "Screw Air Compressor". Compared with JB/T6430-1992, the main changes of this standard are as follows: Updated reference standards:
- Modified some provisions, added and adjusted some parameters; for safety aspects Necessary supplements have been made.
This standard replaces JB/T6430-1992.
Appendix A and Appendix B of this standard are proposed by the China Machinery Industry Federation. The standard is under the jurisdiction of the National Compressor Standardization Technical Committee. This standard is drafted by Wuxi Compressor Co., Ltd. The main drafters of this standard are: Jiang Shanghong, Shang Yongjun, Shi Lijie, Lu Longsheng, and Zhu Zexuan. The previous versions of the standard replaced by this standard are released. The situation is: -JB 2408-1978, JB2408-1985, JB/T 6430-1992; -JB 3351---1984, JB/T6430-1992JB/T6430-2002
I
1 range
General oil-injected screw air compressor
JB/T 6430--2002
This standard specifies the general oil-injected screw air compressor (hereinafter referred to as "screw air compressor") ") terms and definitions, symbols, basic parameters, requirements, test methods, inspection rules, marking, packaging and storage requirements. This standard is applicable to drive motors with power of 2.2kW~630kW and rated exhaust pressure of 0.7 (0.8) MPa, 1.0MPa and 1.25MPa general fixed and modified mobile screw air compressors. Other screw air compressors with a rated exhaust pressure not greater than 1.4MPa can also refer to this standard. 2 | However, parties to an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For undated reference documents, the latest version applies to this standard. GB150-1998 Steel Pressure Vessels || tt | /T4980-1985 Engineering method for determination of noise and sound power level of positive displacement compressors GB/T5330-1985 Metal wire braided square hole screen for industrial use (negISO4783-2:198.1) GB/T 6075.1-
. 1816- 1:1995)
1999
GB/T 6388—1986
GB/T 7022—1986
Measurement and evaluation of mechanical vibration of machines on non-rotating parts Chapter Part 1: General Provisions (idtISO Transport Packaging Receipt and Delivery Marking
Determination of Noise and Sound Power Level of Positive Displacement Compressors - General Provisions for Quality Inspection of Gear Materials and Heat Treatment by Simple Method (eqvISO6336-5:1996) GB/T 8539 --20001
GB/T 12243--1989
GB/T 13306—-1991
GB/T 13384—1992
JB/T 2589—1999| |tt||JB/T 3771--1992
JB/T 6431--1992
JB/T 6908—1993
JB/T 7662-1995
Spring direct load safety valve
Signage
General technical conditions for mechanical and electrical product packaging
Positive compressor model compilation method
Technical conditions for mobile compressor chassis|| tt||Technical conditions for gray iron castings for positive displacement compressors Technical conditions for positive displacement compressor forgings
Terminology for positive displacement compressors Rotary compressor
Safety requirements for positive displacement air compressors (neqASMEB19.1- 1990) JB 8524--1997
JB/T9104-1999 Technical Conditions for Ductile Iron Castings for Positive Displacement Compressors Pressure Vessel Safety Technical Supervision Regulations
3 Terms and Definitions, Symbols
GB The terms, definitions and symbols established in /T4975-1995 and JB/T7662-1995 apply to this standard. JB/T6430—2002
4 Model and basic parameters
4.1 The model preparation of screw air compressor should comply with the regulations of JB/T2589—1999. 4.2 The rated exhaust pressure, nominal volumetric flow rate and matching drive motor power of the screw air compressor should comply with the performance parameters specified in Table 1 (1)
Rated exhaust pressure MPa
Drive motor
Power kw
2.2
3.0
4.0
5.5
7.5
11
15| |tt||18.5
22
30
37
45
55
(63)
75| |tt||90
110
132
160
200
250
315
355||tt ||400
450
500
560
630
water-cooled
0.7(0.8)
air-cooled| |tt||0.29(0.27)
0.39(0.37)
0.52(0.49)
0.67(0.63)
0.94(0.88)
1.40 (1.30)
2.00(1.90)
2.50 (2.40)
3.00(2.80)
4.00(3.80)
5.00(4.70)|| tt||6.20 (5.80)
7.80(7.30)
8.80 (8.20)
10.5(9.80)
i2.5(11.5)
16.0(15.0)
19.0(18.0)
23.0 (21.5)
31.0(28.0)
39.0（36.0)
49.0（45.0）
58.0(52.0)
65.0（59.0)||tt ||74.0(67.0)
82.0(74.0)
92.0 (83.0)
110(100)
0.90 (0.84)
1.30(1.20 )
1.90(1.80)
2.30(2.20)
2.80 (2.60)
3.80（3.60）
4.80(4.50)||tt| |5.90 (5.50)||h||7.40(6.90)||h||8.40(7.80)||h||10.0(9.30)||h||12.0(11.0)||h||15.0(14.0)
18.0(17.0)
22.0(20.5)
29.5(27.0)
37.0(34.0)
46.5（42.5)
1.0. |tt||3.30
4.00
5.00
6.20
7.00
8.50
10.0
12.5||tt ||15.0
18.0
23.0
30.0
37.0
44.0
49.0
55.0
62.0
69.0
80.0
风冷
0.24
0.33
0.44
0.57
0.75
1.00
1.50
1.90
2.30
3.10
3.80
4.80
5.90|| tt||6.70
8.00
9.60
12.0
14.0
17.0www.bzxz.net
22.0
28.0||tt| 35.0.括号内安全电影电视机流动值的非电影选用值。5 requirements
水冷
0.70
0.98
1.40
1.80
2.10
2.90
3.60
4.40
5.50
6.40
7.50
9.20
11.5|| tt||13.5
16.5
21.0
26.0
33.5
39.0
44.0
50.0||tt| |56.0
62.0
73.0
5.1读语空厃机应电影电影本空去电影，今演经经论电视的图校及报动电影图像。5.2· mobile的底盘应电影JB/T3771--1992的设计。2
1.25
风冷
0.21
0.29
0.38||tt| |0.48
0.66
0.95
1.30
1.70
1.90
2.70
3.40
4.20
5.20
6.00
7.10
8.70
10.8
12.8
15.5
20.0|| tt||25.0
31.5
5.3軺汽空厃机机可以工况不可：
吸气情动：0.1MPa（绝厃）；
a）| |tt||b)(
c)
水水水：15℃：d）
e）
f)
水冷螺汽空去机油油发器水水量：按表2计算，units for L/m2JB/T 6430--2002. 1 specification，units for MPa：rotation：product technology document specification for rating ratio，units for r/min。h)
表2 cooling water supply
rates exhaust pressure MPa
电视工况下水水水量Lm2
0.7(0.8)
4.0
1.0
4.8
5.4 The actual volume flow rate shall not be lower than 95% of the volume of the air flow. 7.1mm/s。5.7读方空去机分剧每立方米性所所设计的lubricatingoilquantity应不同40mg。5.8读斯空厃机可以JB8524—1997的设计。1.25
5.6|| tt||5.9 When the temperature of the intake air is 40℃, the temperature of the cooling water is less than or equal to 30℃, and the exhaust pressure is the rated exhaust pressure, the exhaust temperature is not more than 110℃, and the exhaust temperature is not more than 110℃.的 lowest temperature shall not be lower than 其露点 temperature（见附英A）.In the case of after cooling, 其水冷诠汽空去机经的会气水水应不可以40℃。 5.10 5.11 Set up air pressure valve. Conforms to GB/T12243一1989和《pressure vessel security technology目察车程》中国事结果。
5.13 诺语空像机应什么容语能能最术设计设计，以下载手机分电影对语电影电影。 5.14 诺毭The lubricating oil system of the air pressure machine should be equipped with a full-flow filter, whose filtering accuracy is 25um. 5.15 The air flow of the air pressure machine, oil road and water system should be reliable, not have any mutual leakage and external leakage phenomenon. 5.16读油空去machine's exhaust side 应可设计油气电发器。 是带后水气发器时，还应电视疵水手。表3 发动电视（二）
rated exhaust pressure MPa
设计电影
机时间
kw
2.2
3.0
4.0
5.5
7.5
11
15
18.5
0.7 (0.8)
水冷
1.0
kw (m2·min)
比电影
风冷
7.7(8.2)
7.2(7.7)7.5(8.0)
6.8 (7.3)7.2 (7.7)
水冷
8.6
8.4
风冷
9.2
9.0
8.8
水冷
9.7| |tt||9.5
1.25
风冷
10.5
10.2
10.0
Noise sound power level dB (A)
Fixed type
Full-wing type
Water cooling
95
Air cooling|| tt||102
hoodless
water cooling
105
air cooling
112
mobile
wind Cold
112
3
JB/T 6430—2002
Drive electric
Machine power
kw
22
30
37
45
55
(63)
75
90
110
132
160
200
250
315
355
400
450|| tt||500
560
0.7(0.8)
water cooling
rated exhaust pressure MPa
1.0
specific power|| tt||Air cooling
6.6 (7.1)7 (7.5)
6.4 (6.9)6.7 (7.2)
16.2 (6.7) /6.5 (7.0)]||tt| |5.8 (6.4)6.1 (6.7))
5.5 (6.1)
Table 3 (continued)
1.25
kW (m2·min-1)|| tt||Water cooling
8.2
8.0
7.8
7.6
7.3
Air cooling
8.6||tt ||8.4
8.2
8.0
water cooling
9.2
8.9
8.7
8.4
8.1
Fengling
9.7
9.4
9.2
9.0
630
Note: air-cooled screw air pressure The specific power of the air compressor includes the fan power value of the air compressor. Noise sound power level dB (A)
Fixed type
Full green type
Water cooling
97
99
102||tt ||105
107
air-cooled
104
106
109
112
hoodless|| tt||Water cooling
107
109
112
115
117
Crazy cold
114||tt ||116
119
122
Mobile
Air-cooled
114
116
119||tt || 122 |
When the 5.18 screw air compressor is equipped with a speed-increasing box, the box should be tested for leakage, and there should be no leakage within 2 hours after filling with kerosene. 5.19 The steel pressure vessel of the screw air compressor should comply with the regulations of GB150-1998 and the "Pressure Vessel Safety Technical Supervision Regulations". Steel shell and tube heat exchangers should comply with the regulations of GB151-1999. 5.20 The gray cast iron parts of the screw air compressor should comply with the regulations of JB/T6431-1992. Ductile iron castings should comply with the regulations of JB/T9104-1999.
The forgings of screw air compressors should comply with the regulations of JB/T6908-1993. 5.21 | Burrs and bruises. 5.23 Gear material and heat treatment quality inspection should comply with the regulations of GB/T85392000. The gear accuracy is high-precision grade or above. 5.24 The rotor should undergo a dynamic balance test, and its balance accuracy level should not be lower than G6.3. The allowable eccentricity e per unit rotor weight should be determined according to Appendix B according to the rotation speed.
5.25 The outer surfaces of the unit and the sound insulation cover should be painted. The paint film should have certain temperature and corrosion resistance. The paint surface should be smooth, consistent in color, and beautiful. Defects that affect the appearance quality such as unevenness, damage, and peeling paint are not allowed. 4
5.26 The inside of the screw air compressor should be clean, and the cleanliness index should not be greater than the requirements in Table 4. Table 4 Cleanliness value
Drive motor power kw
Cleanliness value mg
≤75
500
JB/T6430--2002||tt ||75~110110~160|160~250|>250~400|>400~560|>560~630750
1000
1250
1500
2000 | |tt | , protection devices and air filters, oil coolers, oil-gas separators, etc.;
b) Random spare parts;
c) Special tools;
d) Random documents (including products Certificate, product instruction manual, packing list and relevant documents of the pressure vessel). 5.28 The manufacturer's warranty for screw air compressors that are used normally according to the product instruction manual is one year, but it shall not exceed 18 months from the date of shipment. During this period, if the product is damaged or fails to operate properly due to poor design or manufacturing, the manufacturer shall be responsible for free repair or replacement. 6 Test methods
6.1 The performance test of screw air compressor shall be in accordance with the provisions of GB/T3853-1998. 6.2 The vibration test method of screw air compressor shall be in accordance with the provisions of GB/T6075.1-1999. 6.3 The noise power level of screw air compressor is measured according to the regulations of GB/T4980-1985. When the acoustic environment cannot meet the requirements, the regulations of GB/T7022-1986 shall apply.
6.4 The cleanliness inspection of the screw air compressor is carried out as follows: a) Disassemble the screw air compressor, and use cleaning agent to clean the inside of the main engine, the gear surface, the speed increase box, the oil and gas separator, and the oil filter Inner cavities of main components such as coolers, oil coolers, oil tanks, etc.: filter the cleaning agent with a three-level precision copper wire mesh with a basic mesh size of 0.08mm that complies with the provisions of GB/T5330-1985, and pass it through b)
The impurities obtained after filtration are heated to 80°C and dried for 1 hour. d) The dried residue is weighed with an ordinary balance with an accuracy of not less than level 7. The weighed weight is the cleaning of the screw air compressor. Degree value 7 Inspection rules
7.1 Inspection type
a) Type inspection;
b) Sampling inspection;
c) Factory inspection.
7.2 Type inspection
7.2.1 Trial screw air compressors (including new products or old products produced by factory transfer) should undergo type inspection. During type inspection, the continuous operation time at full load should be no less than 500h, of which 48h is a continuous overpressure test with an overpressure of 5%; at the same time, the air inlet temperature should be 40°C and the cooling water inlet temperature should be 30°C for 1h. High temperature test. The chassis part of the mobile unit should also undergo performance testing in accordance with the provisions of JB/T3771-1992.
7.2.2 If the structure, material, and process of a normally produced screw air compressor undergo major changes, which may affect product performance, or when a screw air compressor that has been out of production for a long time resumes production, type inspection shall be carried out. During type inspection, the continuous operation time at full load should be no less than 200h, of which 24h is a continuous overpressure test with an overpressure of 5%.
7.2.3 Normally produced screw air compressors should undergo a type inspection periodically or after accumulating a certain output. During type inspection, the continuous operation time at full load should be no less than 24 hours, of which 4 hours is the overpressure test and the overpressure is 5%. 7.2.4 Contents and requirements of type inspection: a) Check the assembly quality, working conditions and correctness of interaction of each part and component: JB/T 6430-2002
Conduct once at the beginning and end of the test Performance test, measuring the volumetric flow rate, specific power b) 2
rate, rotational speed, noise and unit vibration, pressure and temperature of gases at all levels, oil temperature, water temperature, and fuel consumption of the screw air compressor under specified working conditions. etc., the measured results should comply with the provisions of this standard and relevant technical documents: During the overpressure and high temperature test, check the oil temperature, water temperature, exhaust temperature, unit vibration and the operation of each mechanism: c) ||tt ||After the test, the main engine of the screw air compressor should be disassembled, and the contact and wear of major components such as shaft seals, bearings and gears should be checked d)
conditions and the appearance of the rotor:
Determination of cleanliness value:
e)
Based on the working conditions of each institution, the test results of various parameters, and the contact and wear of major parts and components, the f)||tt of the product ||Economy and reliability are evaluated.
7.3 Sampling inspection
Screw air compressors produced in batches should be subject to sampling inspection. During random inspection, the continuous operation time at full load should be no less than 24 hours. The contents of the sampling inspection are as follows:
a) Check the assembly quality, working conditions and correctness of interaction of each parts and components: b) Determine the volumetric flow rate, specific power, and specific power of the screw air compressor under specified working conditions. Noise, pressure and temperature of gases at all levels, oil temperature, water temperature, fuel consumption:
Determination of cleanliness value.
c)
The sampling plan is a one-time sampling plan specified in Table 5. Sampling inspection times should be evenly distributed within a year. Table 5 Sampling plan
Batch size N
2～50
51~90
>90
Sample size n
2| |tt||3
5
sub-sampling plan
pass judgment number A.
0
0
Unit: Taiwan
Number of unqualified judgments R.
1
1
2
The sampling inspection results shall comply with the provisions of this standard and relevant technical documents. If they are unqualified, the manufacturer shall inspect the batch of products one by one and correct the found unqualified products until they comply with the provisions of this standard and relevant technical documents. 7.4 Factory inspection
Each screw air compressor shall be subject to factory inspection by the manufacturer. During factory inspection, the continuous operation time at full load should be no less than 2 hours. The content of the factory inspection is as follows:
Check the assembly quality, working conditions and correctness of interaction of each part and component; a)
According to the provisions of Appendix C of GB/T3853-1998, the rated exhaust Measure actual volumetric flow, exhaust pressure, and shaft power under pressure, b)
The results should comply with the provisions of this standard and relevant technical documents. c) Check the sensitivity of the volumetric flow automatic adjustment device and safety valve. 8 Marking, packaging and storage
8.1 Each screw air compressor should have a product nameplate fixed on a flat and eye-catching part. The size of the nameplate shall be in accordance with the provisions of GB/T133061991. The nameplate shall at least indicate the following:
a) Product model;
b) Product name:
Nominal volumetric flow rate, unit is m3/ min: c)
Rated exhaust pressure, unit is MPa
d)
Shaft power or drive motor power, unit is kW; e
Overall dimensions (length × width × height), unit is mmf)
6
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