JB/T 6726.1-1993 Technical conditions for internal combustion engine condensing radiators
Some standard content:
J96 | | tt | | JB | -29 Released
Ministry of Machinery Industry of the People's Republic of China
Released
Implemented on 1994-01-01
Machinery Industry Standard of the People's Republic of China
Internal combustion engine condensing type Radiator
Technical conditions
1 Subject content and scope of application
JB/T 6726.193
This standard specifies the terminology, marking, and technical requirements for condensing radiators, Inspection methods, inspection rules and markings, packaging, transportation and storage. This standard applies to internal combustion engine condensing radiators (hereinafter referred to as condensers). 2 Reference standards
GB710
GB2041
GB2060
GB2061
GB2532||GB2828
GB 11087.||tt ||High-quality carbon structural steel thin steel plates and steel strips
Yellow pot plate
Brass strips
Special pure copper strips for radiator fins, brass strips for water tank main sheets and water Brass plates and strips for indoor use
Batch-by-batch inspection and counting sampling procedures and sampling tables (applicable to continuous batch inspection) Special pure copper strips and brass strips for radiator cooling pipes JB/T6726.2||tt| |Internal combustion engine cold escape radiator·Test method 3 terminology, labeling
3.1 terminology
3.1.1 Air tightness performance
When the specified gas pressure is applied to the water side of the condenser, condensation The sealing performance the device should have. 3.1.2 Working performance of the compound water inlet cover
When the specified gas pressure is applied to both sides of the sealing surface of the compound water inlet, the critical pressure value when the air inlet valve and steam outlet valve are opened.
3.1.3 Flow performance
Specifies the temperature and wind resistance value of the cooling air from the flow plate when it passes through the condenser. 3.1.4 Heat dissipation performance
When the cooling air with specified temperature and flow rate passes through the cooler, the heat is taken away by heat exchange on the water side. 3.1.5 Resistance performance
Experiences specified frequency and acceleration The condenser can maintain reliable working characteristics despite the number of alarms. 3.1.6 Heat-resistant pressure pulse performance
The water side of the condenser is filled with the test medium of the specified temperature and allowed to experience the specified number of pressure pulses. The condenser can maintain reliable operation characteristics.
3.2 mark
3.2.1 The condenser model is marked in the order of product name code, supporting host model and standard number. 3.2.2 Marking example
Condenser equipped with S195N diesel engine:
a.
LNS195NJB/T6726.1-93
Condenser equipped with R175N diesel engine:
b.
Approved by the Ministry of Machinery Industry on 1993-07-29
Implemented on 1994-01-01
LNR175NJB/T6726.1-93
4 Technical requirements
JB/T 6726.1—93
4.1 The condenser shall comply with the requirements of this standard and be manufactured in accordance with the product drawings and technical documents approved by the prescribed procedures. 4.2 The working environment of the condenser should comply with the requirements in Table 1. Table 1
ring
4.3 material
environment
parameter
working medium
medium humidity
environmental humidity|| tt||Number
The materials of the main parts of the condenser should comply with the requirements in Table 2. 4.3.1
Table 2
Part name
Water pipe
Heat sink
Main piece
Water chamber
Front and rear Board, side panel
Material
H68
H90
H62
H68
H62
H68||tt| |H62
H68
8.10
materials
work
work
need
clear water
115 ℃
≤40℃
Seeking
technical requirements
according to GB2060
according to GB11087
according to GB2061
according to GB2060
According to GB2041 or GB2060
According to GB2532
According to CB2041 or GB2060
According to GB2532
According to GB710
4.3.2 except the above In addition to materials, other materials that have been tested and identified and can indeed meet the manufacturing and performance requirements stipulated in this standard can also be used. 4.4 Manufacturing and Appearance
4.4.1 The internal and external surfaces of the water pipe should be smooth and straight, and no dents are allowed; The end face should be smooth, and burrs, wrinkles and cross-section reduction are not allowed; the weld should be firm and sealed.
4.4.2 Condenser core
4.4.2.1 The welding of the water pipe and the main piece should be firm and sealed; the end face of the water pipe should be higher than the flange hole of the main piece but not exceed the installation plane of the lower main piece. .
4.4.2.2 Water pipes are not allowed to be blocked.
4. 4.2.3
The total number of heat sink fins is allowed to vary ±1 piece; the fin spacing should be uniform; the difference between the sum of any 5 adjacent fin spacings and its nominal value shall not exceed 50% of the nominal fin spacing %: The sum of all the above deviations shall not cause the core height to exceed the tolerance. 4. 4. 2. 4
4. 4. 2. 5
The difference in diagonal length of the core should not exceed 2.5mm. The spacing between main pieces should comply with the drawing requirements.
4.4.3 Condenser assembly
4. 4. 3. 1
4. 4. 3. 2
4.4.3.3
2
The welding part should be strong and reliable.
The size, shape and position requirements of the installation parts related to the host should comply with the drawings. The surface should be smooth, smooth and clean, without magnetic damage, acid stains or rust spots. The exposed heat sink is free of curling, lodging and breakage. JB/T6726.1-93
It is allowed to repair welding on individual chipped micropotential sheets. The number of repairs should not exceed 2, and they must be straightened without obvious accumulation of solder. 4.4.3.4 The surface should undergo reliable anti-rust treatment, and the anti-rust layer should be uniform and complete. 4.5 Usage performance
4.5.1 Air tightness performance
When the condenser is undergoing air tightness test, no gas leakage is allowed. If there is a leak, it is allowed to re-test after repairing the leak with brazing, but the number of repair welds on the water pipes shall not exceed 2.
4.5.2 Working performance of the double water inlet cover
When the double water inlet cover is subjected to the working performance test, the opening pressure and deviation of the air inlet valve and steam outlet valve should comply with the requirements in Table 3. Table 3
Yuemen name
Intake valve
Steam outlet valve
4.5. 3
Flow performance
Nominal opening pressure
≤12
30
>30
Opening pressure deviation
+7.3
~5.5
±10| |tt||When the cold escaper is undergoing a flow performance test, its wind resistance value should comply with the requirements in Table 4 under the specified air volume and air temperature. Table 4
12h power of supporting engine
kw
wind
quantity
kg/h
wind
medical| |tt||P.
Flat fin heat sink
Non-flat fin heat sink
Flat fin type heat sink
Non-flat fin heat sink||tt| |410
370
320
350
4
540
490
≤340
≤370
5
680
610
≤360
400
820
740
390
≤430
Note: The power value including decimals should be rounded to the nearest power level listed in the table,
4.5.4Thermal performance
950
860
≤440
≤480
1090
980
4470||tt ||≤520
1220
1100
≤500
≤550
11
1500
1350|| tt||520
570
kPa
14
1900
1710
540
590||tt| |The thermal performance test of the condenser is carried out in the open state (that is, the water side of the condenser is directly connected to the atmosphere). At this time, under the specified air volume and air temperature, the heat dissipation should not be lower than that specified in Table 5. Table 5
12h power of supporting engine
kw
3
6
8
9bZxz.net
11||tt ||14
30. 0
9. 6
12.g
16.1
19.3
22.5
25.7 | |tt||15.1
18.1
21.1
24.1
27.1
33.1
42.1
Note, power value Those containing decimals should be adjusted to the nearest power level listed in the table. 4.5.5 Vibration resistance and thermal pressure pulse resistance kPs
69.0
8.5
11.3
14. 1
16. 9||tt ||19.7
22.6
25.4
31. 0
39.5
MJ/h
3
JB/ T6726.1-93
During the vibration resistance test and potential pressure pulse resistance test, the condenser is not allowed to have cracking, desoldering, leakage, or deformation that affects installation and use.
4.5.6 Warranty period
If the user selects a reasonable model and abides by the manufacturer's storage, installation and use rules, the warranty period of the condenser is from the date of shipment from the manufacturer. 24 months (accumulated working hours shall not exceed 2000 hours). 5 Inspection methods
5.1 The installation size and shape and position requirements related to the host machine. Select appropriate measuring tools and measuring instruments according to the drawing to detect the aperture, hole spacing and shape and position requirements of the installation surface of the condenser. 5.2 Water pipe blockage Check
Inject clean water into the water pipe and it should drain away automatically. 5.3 The length difference between the two diagonals of the core
is measured on the square area formed by the water pipes on both sides of the core and the upper and lower main pieces. The inspection should include both the air inlet and outlet ends. 5.4 Performance of assembly and water filler cover
According to the provisions of JB/T6726.2.
6 Inspection Rules
6.1 The condenser must pass the inspection by the quality inspection department of the manufacturer before leaving the factory. 6.2 Factory inspection
The refrigerator should be inspected according to the requirements of 4.4.3, 4.5.1 and 4.5.2 before leaving the factory. 6.3 Type inspection
Manufacturers should conduct type inspection of products once a year in accordance with the technical requirements specified in this standard. 6.4 When users need to inspect the materials of the main parts of the condenser, the manufacturer should provide physical and mechanical property data of various materials. 6.5 Condensers should be delivered and accepted in batches, and the items for delivery inspection are the same as those for factory inspection. When the ordering unit randomly inspects product quality, it should be carried out in accordance with the regulations of GB2828. The inspection level IL and the qualified quality level AQL value shall be negotiated by the supplier and the buyer. Marking, packaging, transportation, storage
7
7.1 Each condenser should be marked:
Product name, model:
a.
Manufactured Factory name:
b.
Product number and manufacturing date.
c.
The mark should be clear and reliable, and the marking location, size and method should comply with the provisions of the product drawing or technical document. 7.2 When the condenser leaves the factory, it should be accompanied by a certificate of conformity signed by the inspector of the quality inspection department of the manufacturer. The certificate should be marked: Name of manufacturer:
b.
c.
d .
Product name, model;
Inspection date:
Inspector.
7.3 Condensers should be placed in a certain quantity securely and reliably in cardboard boxes or wooden boxes to ensure that they are not lost or damaged during normal transportation.
7.4 The product instruction manual and packing list should be included in the packaging box. The condensers in each packaging box should be of the same model. The outside of the packaging box should be marked:
a.
b.
e.
Product name and model;
Manufacturer name and address;
Gross weight, kg+
Receiving unit and address;| |tt||d
JB/T 6726.1-93
"Handle with care", "Moisture-proof" and other words or symbols. 7.5 The condenser should be stored in a ventilated and coal-free warehouse. Under normal storage conditions, the manufacturer guarantees that it will not rust or deteriorate in performance within 12 months from the date of shipment.
Additional notes:
This standard is proposed and administered by the Shanghai Internal Combustion Engine Research Institute of the Ministry of Machinery Industry. This standard is drafted by the Shanghai Internal Combustion Engine Research Institute of the Ministry of Machinery Industry and Xiangshui Radiator Factory. The main drafters of this standard are Xu Yinhu, Jin Naokang, and Sun Dianyou. 5
2 regulations.
6 Inspection Rules
6.1 The condenser must pass the inspection by the quality inspection department of the manufacturer before leaving the factory. 6.2 Factory inspection
The refrigerator should be inspected according to the requirements of 4.4.3, 4.5.1 and 4.5.2 before leaving the factory. 6.3 Type inspection
Manufacturers should conduct type inspection of products once a year in accordance with the technical requirements specified in this standard. 6.4 When users need to inspect the materials of the main parts of the condenser, the manufacturer should provide physical and mechanical property data of various materials. 6.5 Condensers should be delivered and accepted in batches, and the items for delivery inspection are the same as those for factory inspection. When the ordering unit randomly inspects product quality, it should be carried out in accordance with the provisions of GB2828. The inspection level IL and the qualified quality level AQL value shall be negotiated by the supplier and the buyer. Marking, packaging, transportation, storage
7
7.1 Each condenser should be marked:
Product name, model:
a.
Manufactured Factory name:
b.
Product number and manufacturing date.
c.
The mark should be clear and reliable, and the marking location, size and method should comply with the provisions of the product drawing or technical document. 7.2 When the condenser leaves the factory, it should be accompanied by a certificate of conformity signed by the inspector of the quality inspection department of the manufacturer. The certificate should be marked: Name of manufacturer:
b.
c.
d .
Product name, model;
Inspection date:
Inspector.
7.3 Condensers should be placed in a certain quantity securely and reliably in cardboard boxes or wooden boxes to ensure that they are not lost or damaged during normal transportation.
7.4 The product instruction manual and packing list should be included in the packaging box. The condensers in each packaging box should be of the same model. The outside of the packaging box should be marked:
a.
b.
e.
Product name and model;
Manufacturer name and address;
Gross weight, kg+
Receiving unit and address;| |tt||d
JB/T 6726.1-93
"Handle with care", "Moisture-proof" and other words or symbols. 7.5 The condenser should be stored in a ventilated and coal-free warehouse. Under normal storage conditions, the manufacturer guarantees that it will not rust or deteriorate in performance within 12 months from the date of shipment.
Additional notes:
This standard is proposed and administered by the Shanghai Internal Combustion Engine Research Institute of the Ministry of Machinery Industry. This standard is drafted by the Shanghai Internal Combustion Engine Research Institute of the Ministry of Machinery Industry and Xiangshui Radiator Factory. The main drafters of this standard are Xu Yinhu, Jin Naokang, and Sun Dianyou. 5
2 regulations.
6 Inspection Rules
6.1 The condenser must pass the inspection by the quality inspection department of the manufacturer before leaving the factory. 6.2 Factory inspection
The refrigerator should be inspected according to the requirements of 4.4.3, 4.5.1 and 4.5.2 before leaving the factory. 6.3 Type inspection
Manufacturers should conduct type inspection of products once a year in accordance with the technical requirements specified in this standard. 6.4 When users need to inspect the materials of the main parts of the condenser, the manufacturer should provide physical and mechanical property data of various materials. 6.5 Condensers should be delivered and accepted in batches, and the items for delivery inspection are the same as those for factory inspection. When the ordering unit randomly inspects product quality, it should be carried out in accordance with the provisions of GB2828. The inspection level IL and the qualified quality level AQL value shall be negotiated by the supplier and the buyer. Marking, packaging, transportation, storage
7
7.1 Each condenser should be marked:
Product name, model:
a.
Manufactured Factory name:
b.
Product number and manufacturing date.
c.
The mark should be clear and reliable, and the marking location, size and method should comply with the provisions of the product drawing or technical document. 7.2 When the condenser leaves the factory, it should be accompanied by a certificate of conformity signed by the inspector of the quality inspection department of the manufacturer. The certificate should be marked: Name of manufacturer:
b.
c.
d .
Product name, model;
Inspection date:
Inspector.
7.3 Condensers should be placed in a certain quantity securely and reliably in cardboard boxes or wooden boxes to ensure that they are not lost or damaged during normal transportation.
7.4 The product instruction manual and packing list should be included in the packaging box. The condensers in each packaging box should be of the same model. The outside of the packaging box should be marked:
a.
b.
e.
Product name and model;
Manufacturer name and address;
Gross weight, kg+
Receiving unit and address;| |tt||d
JB/T 6726.1-93
"Handle with care", "Moisture-proof" and other words or symbols. 7.5 The condenser should be stored in a ventilated and coal-free warehouse. Under normal storage conditions, the manufacturer guarantees that it will not rust or deteriorate in performance within 12 months from the date of shipment.
Additional notes:
This standard is proposed and administered by the Shanghai Internal Combustion Engine Research Institute of the Ministry of Machinery Industry. This standard is drafted by the Shanghai Internal Combustion Engine Research Institute of the Ministry of Machinery Industry and Xiangshui Radiator Factory. The main drafters of this standard are Xu Yinhu, Jin Naokang, and Sun Dianyou. 5
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