JB/T 7658.8-1995 Liquid receiver for ammonia refrigeration equipment

This standard replaces JB 463-86 and JB 4337-86. JB/T 7658.8-1995 Liquid receiver for ammonia refrigeration equipment JB/T7658.8-1995 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Liquid Receiver for Ammonia Refrigeration Device
1 Subject Content and Scope of Application
JB/T 7658. 8--95
Replaces 4337--86
JB 463-86
This standard specifies the terminology, product classification, technical requirements, test methods, inspection rules, marking, packaging and transportation of liquid receiver for ammonia refrigeration device (hereinafter referred to as liquid receiver).
This standard applies to liquid receiver for ammonia refrigeration device. 2
Reference standards
GB 1226
GB12241
General pressure gauge
General requirements for safety valves
GB/T13306Signage
JB/T 6917
JB/T6918
ZB J73 027
ZB J73 042
3Terms
3.1Liquid receiver
Pressure vessel for refrigeration equipment
Metal and glass sintered liquid level gauges and sight glasses for refrigerationGeneral provisions for cleanliness determination of refrigeration equipment
Pressure and differential pressure controller for refrigeration
Container for storing liquid refrigerant in refrigeration system. 4Product classification
The structure of the liquid receiver is horizontal.
4.2 Model
4.2.1 Model Indication Method
The model of the liquid storage tank is composed of capital Chinese phonetic letters and Arabic numerals (hereinafter referred to as numbers). The model indication method is as follows:
ZA -□
Revision number: Indicated by numbers, omitted for the first design product Nominal volume: Indicated by numbers, m3
Code for liquid storage tank
4.2.2 Model Example
ZA2.5: Indicates a liquid storage tank with a nominal volume of 2.5m2. 4.3 Basic Parameters
Approved by the Ministry of Machinery Industry of the People's Republic of China on June 16, 1995 1412
Implemented on July 1, 1996
JB/T 7658.8--95
The nominal volume of the liquid storage tank shall comply with the provisions of Table 1. Table 1
4.4 Design conditions
Design pressure: 2MPa
Design temperature: 50℃C.
5 Technical requirements
5.1 General requirements
The liquid reservoir 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 liquid reservoir shall have material certificates. 5.2.2 The materials used for the liquid reservoir shall comply with the provisions of JB/T6917. 5.3 Cold and hot processing
The cold and hot processing of the liquid reservoir shall comply with the provisions of JB/T6917. 5.4 Welding and non-destructive testing
The welding and non-destructive testing of the liquid reservoir shall comply with the provisions of JB/T6917. 5.5 Test plate and test specimen
The test plate and test specimen of the liquid reservoir shall comply with the provisions of JB/T6917. 5.6 Parts and components
The cylinder, head, flange, support and other parts and components of the liquid reservoir 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 liquid reservoir shall also comply with the following provisions: The overpressure relief device shall comply with the provisions of GB12241 and relevant standards; a.
The high-pressure cut-off device shall comply with the provisions of ZBJ73042; b.
The liquid 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 liquid reservoir shall comply with the provisions of JB/T6917. 5.9 Pressure resistance and airtightness requirements
5.9.1 After the liquid storage tank is manufactured, it shall be subjected to pressure test and airtightness test, and its requirements shall be in accordance with the provisions of JB/T6917. 5.9.2 Before the pressure test, the opening reinforcement ring of the liquid storage tank shall be passed through 0.4~~0.5MPa compressed air to check the quality of the weld. 5.10 Safety requirements
When the temperature of saturated nitrogen liquid is 32C, the ammonia liquid stored in the liquid storage tank shall not exceed 80% of the liquid storage tank volume. 5.11 Cleanliness
The inside of the liquid storage tank shall be clean, and the impurity content in the part in contact with the refrigerant shall not exceed 800mg/m3. 5.12 Appearance quality
The liquid storage tank shall be beautiful and elegant, and the weld surface shall be free of cracks, pores, arc pits and slag inclusions. The outer surface shall be painted, and the paint shall be uniform, smooth and consistent in color, and there shall be no defects that affect the appearance. 1413
5.13 Completeness
The complete set of liquid storage tanks shall include:
Ammonia liquid inlet and outlet joints,www.bzxz.net
Assembly flanges:
Pressure gauge joint:
Oil drain joint,
Vent joint;
Drain joint;
Safety valve joint,
Liquid level gauge joint:
Balance pipe joint.
5.14 Accessories
The accessories of the liquid storage tank are:
Safety valve;
Liquid level gauge:
Pressure gauge valve and pressure gauge;
Ammonia valve;
Oil drain valve;
Vent valve;
Anchor bolts.
JB/T 7658.8—95
The level gauge of the liquid reservoir shall comply with the provisions of JB/T6918. 5.14.3 Other accessories of the liquid reservoir shall comply with the provisions of the corresponding standards. 5.15 Warranty period
If the user complies with the provisions of the product manual, the manufacturer shall replace or repair the liquid reservoir free of charge within 18 months from the date of shipment from the manufacturer if the liquid reservoir is damaged or fails to work properly due to poor manufacturing. 6 Test methods
6.1 Nondestructive testing
The method of nondestructive testing of liquid reservoirs shall comply with the provisions of JB/T6917. 6.2 Pressure resistance test and airtightness test
The pressure resistance and airtightness test methods of the purchased liquid reservoir shall comply with the provisions of JB/T6917. 6.3 Cleanliness determination
The determination of the cleanliness of the liquid reservoir can refer to the provisions of ZBJ73027. 7 Inspection rules
7.1 General requirements
The liquid reservoir shall be inspected by the technical inspection department of the manufacturer according to this standard and technical documents, and can only be shipped after passing the inspection. 7.2 Inspection items
After each liquid reservoir is manufactured, it shall be inspected for delivery according to the following inspection items: Check the material report of the main pressure-bearing components; a.
Check the processing quality of the liquid reservoir;
Check the appearance quality of the liquid reservoir;
Check the non-destructive testing report;
Check the pressure resistance and airtightness test report;
Check the contents of the nameplate;
Check the completeness of the product according to the factory documents. g.
8 Marking, packaging and transportation
8.1 Marking
8.1.1 Label
JB/T 7658 8-~-95
A label should be fixed on a conspicuous and flat position of the liquid reservoir. 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 liquid reservoir can refer to the provisions of JB/T6917. 8.2 Packaging and transportation
8.2.1 All exposed processing surfaces and connecting pipes of the liquid reservoir 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 plate. 8.2.2 The painting, packaging and transportation of the liquid reservoir 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, and Li Muzhen. This standard was first issued in January 1964 and revised for the first time in December 1986. 1415
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