This standard replaces JB 456-86 and JB 4337-86. This standard specifies the terminology, product classification, technical requirements, test methods, inspection rules, marking, packaging and transportation of ammonia liquid separators for ammonia refrigeration equipment. This standard applies to ammonia liquid separators for ammonia refrigeration equipment. JB/T 7658.14-1995 Ammonia liquid separators for ammonia refrigeration equipment JB/T7658.14-1995 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Ammonia Liquid Separator for Ammonia Refrigeration Device
1 Subject Content and Scope of Application
JB/T 7658. 14--95
JB 456..- 86
Replaces JB 4337-86
This standard specifies the terminology, product classification, technical requirements, test methods, inspection rules, marking, packaging and transportation of ammonia liquid separators for ammonia refrigeration devices (hereinafter referred to as separators). This standard applies to ammonia liquid separators for ammonia refrigeration devices. 2 Reference standards
GB1226 General pressure gauge
GB12241 Safety valve
-General requirements
GB/T13306 Label
JB/T 6917
JB/T 6918
ZB J73 027
Pressure vessels for refrigeration equipment
Metal and glass sintered liquid level gauges and sight glasses for refrigerationGeneral provisions for cleanliness determination of refrigeration equipment
ZB J73 042
: Pressure and pressure differential controllers for refrigeration
3 Terms
3.1 Ammonia liquid separator
It is a device used to separate ammonia liquid from the evaporator into the nitrogen compressor to prevent ammonia liquid from entering the compressor to produce wet compression stroke and liquid hammer.
4 Product classification
4.1 Type
The structure of the separator is vertical. www.bzxz.net
4.2 Model
4.2.1 Model representation method
The model of the separator consists of uppercase Chinese phonetic letters and Arabic numerals (hereinafter referred to as numbers). The representation method of its model is stipulated as follows:
Retrofit number: represented by numbers, the first design product is omitted-Simplified nominal diameter: represented by numbers, mm Code of separator
4.2.2 Model example
AF1000: represents a separator with a simplified nominal diameter of 1000mm. Approved by the Ministry of Machinery Industry of the People's Republic of China on June 16, 1995 and implemented on July 1, 1996
4.3 Basic parameters
JB/T 7658. 14-95
The nominal diameter of the separator shall comply with the provisions of Table 1. Table 1
4.4 Design conditions
Design pressure: 1.4MPa;
Design temperature: 38℃.
5 Technical requirements
5.1 General requirements
The separator shall comply with the provisions of this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures, or 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 separator shall have material certificates. 5.2.2 The materials used for the separator shall comply with the provisions of JB/T6917. 5.3 Cold and hot processing
The cold and hot processing of the separator shall comply with the provisions of JB/T6917. 5.4 Welding and non-destructive testing
The welding and non-destructive testing of the separator shall comply with the provisions of JB/T6917. 5.5 Test plates and test specimens
The test plates and test specimens of the separator shall comply with the provisions of JB/T6917. 5.6 Parts and components
The parts and components of the separator such as the cylinder, head, flange, support, etc. shall comply with the provisions of JB/T6917. 5.7 Safety accessories
In addition to complying with the provisions of JB/T6917, the safety accessories of the separator shall also comply with the following provisions: a
The overpressure relief device shall comply with the provisions of GB/T2241 and relevant standards; the high-pressure cut-off device shall comply with the provisions of ZBJ73042; the level gauge and sight glass shall comply with the provisions of JB/T6918; the pressure gauge shall comply with the provisions of GB1226.
5.8 Openings and opening reinforcements
The openings and opening reinforcements of the separator shall comply with the provisions of JB/T6917. 5.9 Pressure resistance and airtightness requirements
The separator shall be subjected to pressure resistance test and airtightness test, and the requirements shall be in accordance with the provisions of JB/T6917. 5.10 Cleanliness
The inside of the separator 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 separator 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 uniform in color, and there should be no defects that affect the appearance. 1438
Completeness
The separator supplied as a complete set should also include:
Nitrogen liquid inlet and outlet joints;
Ammonia gas inlet and outlet joints;
Assembly flange:
Oil drain (drain) joint:
Vent joint:
Safety valve joint;
Level gauge joint;
Balance pipe joint.
The accessories of the separator are:
Safety valve;
Liquid level gauge:
JB/T 7658.14—95
Float valve or other devices (configured according to structural requirements); ammonia valve;
Drain valve or drain plug;
Vent valve.
Other accessories of the separator shall comply with the provisions of the relevant standards. 5.14 Warranty period
If the user complies with the provisions of the product manual, within 18 months from the date of shipment from the manufacturer, if the separator is damaged or cannot work normally due to poor manufacturing, the manufacturer shall replace or repair it free of charge. 6 Test method
6.1 Non-destructive testing
The method of non-destructive testing of the separator shall comply with the provisions of JB/T6917. 6.2 Pressure test and airtightness test
The pressure test and airtightness test methods of separators shall comply with the provisions of JB/T6917. 6.3 Cleanliness determination
The determination of the cleanliness of separators may refer to the provisions of ZBJ73027. 7 Inspection rules
General requirements
The separators shall be inspected by the technical inspection department of the manufacturer in accordance with this standard and technical documents, and can only be shipped after passing the inspection. 7.2 Inspection items
After each separator is manufactured, it shall be inspected for delivery according to the following inspection items: a.
Check the material report of the pressure-bearing components;
Check the processing quality of the separator;
Check the appearance quality;
Check the non-destructive testing report;
Pressure and airtightness test;
Check the contents of the label;
Check the completeness of the product according to the factory documents. 1439
8 Marking, packaging and transportation
8.1 Marking
JB/T7658.14--95
8.1.1 Label
The separator should be fixed with a label on a conspicuous and flat position. The label should comply with the provisions of GB/T13306. The contents marked on the label can refer to the provisions of JB/T6917.
8.1.2 Factory documents
The factory documents of the separator can refer to the provisions of JB/T6917. 8.2 Packaging and transportation
8.2.1 All pipes of the separator should be coated with anti-rust agent and properly sealed. The assembly flange should be tightened with bolts. The flange sealing surface should be coated with anti-rust grease and sealed with a blind plate.
8.2.2 The painting, packaging and transportation of the separator can refer to the provisions of JB/T6917. Additional Notes:
This standard was proposed and managed 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, Li Muzhen. This standard was first issued in January 1964 and revised for the first time in December 1986. 1440
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