This standard replaces JB 460-86 and JB 4337-86. This standard specifies the terminology, product classification, technical requirements, test methods, inspection rules, marking, packaging and transportation of oil collectors for ammonia refrigeration equipment. This standard applies to oil collectors for ammonia refrigeration equipment. JB/T 7658.10-1995 Oil collectors for ammonia refrigeration equipment JB/T7658.10-1995 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Oil Collectors for Ammonia Refrigeration Equipment
Subject Content and Scope of Application
JB/T 7658. 10-95
Replacement of 18-%
This standard specifies the terminology, product classification, technical requirements, test methods, inspection rules, marking, packaging and transportation of oil collectors for ammonia refrigeration equipment (hereinafter referred to as oil collectors).
This standard applies to oil collectors for ammonia production equipment. Cited standards
GB/T 13306
JB/T 6917
JB/T 6918
ZB J73 027
3 Terms
3.1 Oil collector
Pressure vessel for refrigeration equipment
Metal and glass sintered liquid level gauge and sight glass for refrigeration General provisions for cleanliness determination of refrigeration equipment
Equipment used to store lubricating oil separated from oil separators, condensers, liquid receivers, intercoolers, evaporators, etc., and discharge the oil from the system according to certain oil discharge operating procedures. 4 Product classification
4.1 Type
The structural type of the oil collector is vertical.
4.2 Model
4.2.1 Model Indication Method
The model of the oil collector consists of uppercase Chinese phonetic letters and Arabic numerals (hereinafter referred to as numbers). The model indication method is as follows:
JY□-□
Remodel number: indicated by numbers, the first drink design product is omitted simplified nominal diameter: indicated by numbers, mm Code of oil collector
4.2.2 Model Example
JY200: indicates an oil collector with a nominal diameter of 200mm, 4.3 Basic Parameters
The nominal diameter of the barrel of the oil collector shall comply with the provisions of Table 1. Approved by the Ministry of Machinery Industry of the People's Republic of China on June 16, 1995 1420
Implementation from July 1, 1996
4.4 Design Conditions
Design pressure: 2MPa;Www.bzxZ.net
Design temperature: 50℃.
5 Technical requirements
General requirements
JB/T 7658.10—95
The oil collector shall comply with the provisions of this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures. It can also be manufactured according to the agreement between the user and the manufacturer.
5.2 Materials
5.2.1 The materials of the main pressure-bearing components of the oil collector shall have material certificates. 5.2.2 The materials used for the oil collector shall comply with the provisions of JB/T6917. 5.3 Cold and hot processing
The cold and hot processing of the oil collector shall comply with the provisions of JB/T6917. 5.4 Welding and non-destructive testing
The welding and non-destructive testing of the oil collector shall comply with the provisions of JB/T6917. 5.5 Test plates and test specimens
The test plates and test specimens of the oil collector shall comply with the provisions of JB/T6917. 5.6 Parts and components
The parts and components of the oil collector, such as the shell, head, flange, and support, shall comply with the provisions of JB/T6917. 5.7 Openings and opening reinforcements
The openings and opening reinforcements of the oil collector shall comply with the provisions of JB/T6917. 5.8 Pressure resistance and airtightness requirements
5.8.1 After the oil collector is manufactured, it shall be subjected to pressure resistance test and airtightness test, and its requirements shall comply with the provisions of JB/T6917. 5.8.2 Before the pressure test, the opening reinforcement ring of the oil collector shall be passed through 0.4~~0.5MPa compressed air to check the weld quality. 5.9 Safety requirements
The level gauge installed on the oil collector should have a protective cover, and the indicating glass should be able to withstand a test pressure not lower than that of the separator. 5.10 Cleanliness
The inside of the oil collector should be clean, and the impurity content in the part in contact with the refrigerant should not exceed 800mg/m2. 5.11 Appearance quality
The oil collector should be beautiful and elegant, and the weld surface should be free of cracks, pores, arc pits and slag inclusions. The outer surface should be painted, and the paint should be evenly smooth and consistent in color, and there should be no defects that affect the appearance. 5.12 Completeness
The oil collector supplied as a set should also include:
Oil inlet and drain joints,
Nitrogen return joints,
Group assembly flanges;
Pressure gauge joints;
Level gauge joints.
5.13 Accessories
5.13.1 The accessories of the oil collector are:
Liquid level gauge;
Ammonia valve;
Pressure gauge valve and pressure gauge;
Oil inlet and drain valves;
Anchor bolts.
JB/T 7658.10—95
5.13.2 The liquid level gauge of the oil collector shall comply with the provisions of JB/T6918. 5.13.3 Other accessories of the oil collector shall comply with the provisions of the relevant standards. 5.14 Warranty period
If the user complies with the provisions of the product manual, the manufacturer shall replace or repair the oil collector free of charge within 18 months from the date of shipment from the manufacturer if it is damaged or fails to work properly due to poor manufacturing. 6 Test methods
6.1 Nondestructive testing
The method of nondestructive testing of oil collector shall comply with the provisions of JB/T6917. 6.2 Pressure test and airtightness test
The pressure test and airtightness test methods of oil collector shall comply with the provisions of JB/T6917. 6.3 Cleanliness determination
The determination of cleanliness of oil collector may refer to the provisions of ZBJ73027. 7 Inspection rules
General requirements
The oil collector shall be inspected by the technical inspection department of the manufacturer in accordance with this standard and technical documents, and may be shipped only after passing the inspection. 7.2 Inspection Items
After each oil collector is manufactured, it shall be inspected for delivery according to the following inspection items: a.
Inspect the material report of the main pressure-bearing parts; inspect the processing quality of the oil collector;
Inspect the appearance quality of the oil collector;
Inspect the flaw detection report;
Pressure resistance and airtightness test;
Check the contents of the label;
Check the completeness of the product according to the factory documents. 8 Marking, packaging and transportation
8.1 Marking
8.1.1 Label
The oil collector shall be fixed with a label on a clear and flat position. The label shall comply with the provisions of GB/T13306. The contents marked on the label may refer to the provisions of JB/T6917.
8.1.2 Factory Documents
The factory documents of the oil collector shall refer to the provisions of JB/T6917. 1422
8.2 Packaging and transportation
JB/T7658.10—95
8.2.1 All exposed machined surfaces and connecting pipes of the oil collector shall be coated with anti-rust agent and properly sealed. The assembly flange shall be fastened with bolts. The flange sealing surface shall be coated with anti-rust grease and sealed with a blind plate. 8.2.2 The painting, packaging and transportation of the oil collector may refer to the provisions of JB/T6917. Additional notes:
This standard was proposed and coordinated by the Hefei General Machinery Research Institute of the Ministry of Machinery Industry. This standard was drafted by Wuhan New World Refrigeration Industry Co., Ltd. and Dalian Refrigeration Co., Ltd. The main drafters of this standard are: Hu Zengwu, Sun Zhengguo, Ha Hongbo, and Li Muzhen. This standard was first issued in January 1964 and revised for the first time in December 1986. 1423
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