This standard specifies the technical conditions, test methods and inspection rules for high-pressure fuel pipe assemblies for diesel engine fuel injection pump test benches. This standard applies to various high-pressure fuel pipe assemblies used when testing and adjusting diesel engine fuel injection pumps on fuel injection pump test benches. JB/T 8121-1999 High-pressure fuel pipe assemblies for diesel engine fuel injection pump test benches JB/T8121-1999 Standard download decompression password: www.bzxz.net

1CS 43.060.40
Machinery Industry Standard of the People's Republic of China
JB/T 8121—1999
neqIso 4093:1986
High pressure pipe assemblies for diesel fuelinjection pump test hench
Published on September 17, 1999
National Bureau of Machinery Industry
Implementation on January 1, 2000
JB/T8121—1999
Quasi-standard non-equivalent adoption of 1SO4093:198B6 road-avoiding vehicle—Gaulo fuel pipe for injection system test Compared with 1504093:[986], the high-pressure oil pipe assembly structure diagram and the technical requirements for the hydraulic test of the high-pressure oil pipe assembly are added, and the test methods and inspection rules are added. This standard is a revision of JB/T8121-95 "High-pressure oil pipe assembly for diesel engine oil pump or test bench". The original standard was edited during the revision, but the main technical content remained unchanged. The implementation of this standard replaces 1H8121-95. This standard was proposed and managed by the standardization technical committee. The drafting unit of this standard: Wuxi Oil Pump Oil Resistant Research Institute. The main drafters of this standard: Wei Fen, Zhang Limin. This standard was first issued in August 1986 as GRG810-86 and revised to JB/T8121-95.1 in April 1996.
Machinery Industry Standard of the People's Republic of China
High pressure pipe assenblies for diesel melinjectiou pamp 1eat hench
JB/T8121-199
neo1504093:1986
Gu H:18121--95
This standard specifies the technical conditions, test methods and inspection rules for high-pressure oil pipe components used in diesel engine injection pump test benches. This standard is applicable to various high-pressure oil pipe components used in testing and adjusting the fueling system of diesel engines on injection pump test benches. 2 Reference standards
The texts contained in the following standards constitute the provisions of this standard by being cited in the small standards. When this standard is issued, the demonstration version is valid. All standard departments will be revised. All parties using the standard should explore the use of the following standard products, the new version of the name JB/T6011 [992 diesel engine high pressure oil pipe connection JB/T8120-1995 diesel engine high pressure pipe 3 structure and size
3.1 structure
high pressure oil component structure connection diagram! .
after the supply and demand parties agree, it is allowed to adopt other structures 1 double connection: 2-high oil pipe: 3-protection diagram 1 high pressure pipe structure diagram
3.2 size
3.2.1 high pressure combustion engine dimensions in addition to the provisions of table 1, but also in accordance with the relevant provisions of JBT 6011. The remaining dimensions should be manufactured with the product sample and technical documents approved by the mixing process. National Machinery Industry Association Teng 1999-09-17 approved
2000-01-(01 hot
JBT 8121-1999
3.2.2 The joint nuts and pipe nuts shall comply with the relevant provisions of JB/T60. Table! High-pressure oil pipe dimensions
Basic civil
Technical requirements
Limits and dimensions
Basic dimensions
Limit dimensions
Standard dimensions
4.1 The steel pipes used to manufacture the real pressure oil pipes are made of Material grade, chemical composition and mechanical properties shall comply with the provisions of JBT8120: 4.2 The inner and outer surface quality of the steel pipe shall comply with the provisions of JBT8120. mm
Vibration limit gauge
4.3 When the high-pressure oil pipe assembly is subjected to hydraulic test, it shall be able to withstand the test specified in Table 2, and the holding time shall not be less than 5, and shall not be fully cracked or deformed due to water.
Table 2 Island hydraulic oil pipe assembly test pressure
> 2,5- 4
Tooth face strength
4.4 The bending diameter of the pressure element shall not be less than 6mm from the center line of the pipe, and the lubrication distance shall not be less than 25mm for the oil.
4.5 The requirements for the head of the high pressure pipe shall comply with the relevant provisions of BT60. 4.6 The requirements for the tight part of the high pressure pipe shall comply with the relevant provisions of BT6H1. 4.7 The inner hole deformation caused by the high pressure oil pipe after the head shall be within 30mm of the length from the end face of the micro head. A 0.9 light drill bit shall be used to select the expansion hole.
4.8 High pressure oil pipe, expansion The surface requirements of the pipe and pipe nuts shall comply with the relevant provisions of JBT6011. 4.9 The high-pressure oil pipe assembly shall be disinfected and cleaned, and the inner hole shall be cleaned according to the provisions of B6011. 5 Test methods, inspection rules
5 The chemical composition and primary performance test methods of the pipe shall comply with the provisions of January 120. 5.2 The liquid injection test of the pipe assembly shall be carried out on a hydraulic test bench. 5.3 The inner diameter of the high-impact pipe should be measured with a "long average aperture comprehensive measuring instrument". When measuring, the two standard pipes with an inner diameter of 1:1 and lower limits are used as the reference for relative measurement: the average inner diameter of the standard pipe is filled with mercury to meet the requirements. JB/T 8121—1999
“Slender Tube Small Hole Light Comprehensive Tester” mainly has the following specifications: a) Test range: l diameter 1-@3mm, length 100-1000mm; b) magnification: 1000×; c) minimum value range: no more than 0.10mm; d) minimum value error: 20.005m; d) indication value variation: 0.003mm; 3) indication value stability: more than 0.004mm
5.4 For the inner hole cleanliness inspection of high-pressure oil pipe, 120% solvent-resistant gasoline with a pressure of not less than 0.1MPa shall be passed through the inner hole for no less than 30s, and then filtered through a 5μm filter membrane. There shall be no precipitates visible to the naked eye on the membrane. 5.5 The inner and outer surface matching quality of high-pressure oil pipe components shall be inspected monthly. The inspection defect depth shall be determined by the gold-beating method with a minimum of 50%.
: 5 Each high-pressure oil pipe assembly must be inspected and qualified by the supplier's technical inspection department before it can be shipped. 5.7 When the purchaser conducts random inspection of product quality, the sampling method and inspection items shall be agreed upon by the supply and demand parties. 6 Marking, packaging, transportation, and delivery
6! The high-pressure oil pipes shall be marked with the code specified in the table above and the number of this standard. Marking example: 2,-6 mm, 2-2 mm, 1~mmm Shangle oil pipe assemblies. The total marking is: [JB/T$121
2 The packaged high-pressure oil pipe assemblies shall be accompanied by a product certificate signed by the inspection personnel of the manufacturer. The following should be marked on the certificate: a) Manufacturer name or 1. Factory mark;
b) Product name, specification, code and standard number; c) Inspection period (year, month);
6.3 Each high-pressure oil fiber component shall be treated with rust prevention and both ends must be sealed. 6.4 The high-pressure pipe assembly packed in the box shall be covered with waterproof paper. The weight of each piece shall not exceed 50k and it shall be ensured that it will not be damaged during normal transportation: www.bzxz.net
6.5 The outer surface of the packaging box shall be marked:
a) Manufacturer name, T! Marking and address: h) Product name, specification, code and standard number: c) Total mass, number;
Receiving unit and address:
e) "Handle with care", "Moisture-proof", "Prevent" mark; 9 Factory H period (year, other)
Stone 6 High-pressure oil pipe components should be stored in a ventilated and dry warehouse under normal storage conditions and will not be damaged within 12 months from the date of leaving the factory.
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