This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging and transportation of liquid receivers for Freon refrigeration equipment. JB/T 7659.1-1995 Liquid receivers for Freon refrigeration equipment JB/T7659.1-1995 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Liquid Receiver for Freon Refrigeration Device
Question Content and Scope of Application
JB/T 7659.1-95
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging and transportation of liquid receivers for Freon refrigeration devices (hereinafter referred to as liquid receivers).
This standard applies to liquid receivers with a design pressure not exceeding 2.4MPa and a volume not exceeding 1.0m3 that are supplied separately. Liquid receivers with a volume less than 0.025m2 can be implemented as a reference.
2 Reference standards
GB1226
GB12241
General pressure gauge
Safety valve
GB/T 13306
JB/T 6917
JB/T 6918
ZB J73 029
ZB J73 042
3 Product classification
3.1 Type
General requirements
Pressure vessels for refrigeration equipment
Metal and glass sintered liquid level gauges and sight glasses for refrigerationMethod for determination of cleanliness of tubular heat exchangers for refrigeration equipmentPressure and pressure differential controllers for refrigeration
Horizontal and vertical types.
3.2 Model
3.2.1 Model Indication Method
The model of the receiver is composed of capital Chinese phonetic letters and Arabic numerals (hereinafter referred to as numbers), and its model indication method is as follows: Modification number: indicated by numbers, omitted for the first design product. Receiver internal volume: indicated by numbers, accurate to the percentile, m. Applicable refrigerant: Freon refrigerant, indicated by F. Receiver code: horizontal receiver is indicated by WZ, vertical receiver is indicated by LZ. 3.2.2 Model Example
WZF0.05: indicates that the internal volume is 0.05m, the first design of the Freon refrigerant horizontal receiver. 3.3 Basic Parameters
Approved by the Ministry of Machinery Industry of the People's Republic of China on June 16, 1995 and implemented on July 1, 1996
Design pressure: 2.4MPa,
b. Design temperature: 60℃.
4 Technical requirements
4.1 General requirements
JB/T 7659. 1-—
The liquid receiver 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.
4.2 Liquid storage volume
The amount of refrigerant liquid filled in the liquid receiver shall not exceed 80% of its actual volume. 4.3 Materials
4.3.1 The materials used to manufacture the pressure-bearing components of the liquid receiver shall have a material certificate. 4.3.2 The materials used for the liquid receiver shall comply with the provisions of JB/T6917. 4.4 Cold and hot processing
The cold and hot processing of the liquid receiver shall comply with the provisions of JB/T6917. 4.5 Welding and flaw detection
The welding and flaw detection of the liquid receiver shall comply with the provisions of JB/T6917. 4.6 Test plate and test specimen
The test plate and test specimen of the liquid storage tank shall comply with the provisions of JB/T6917. 4.7 Parts and components
The cylinder, head, support and other parts and components of the liquid storage tank shall comply with the provisions of JB/T6917. 4.8 Safety accessoriesbZxz.net
In addition to complying with the provisions of JB/T6917, the safety accessories of the liquid storage tank shall also comply with the following provisions: a.
The overpressure relief device shall comply with the provisions of GB12241 and relevant standards; the high-pressure cut-off device shall comply with the provisions of ZBJ73042; c. The pressure gauge shall comply with the provisions of GB1226;
d. The liquid level gauge and sight glass shall comply with the provisions of JB/T6918. 4.9 Pressure resistance and airtightness requirements
The liquid storage tank shall be subjected to pressure test and airtightness test, and the requirements shall comply with the provisions of JB/T6917. 4.10 Cleanliness
The inside of the receiver should be clean and dry, and the impurity content of the surface in contact with the refrigerant should not exceed 300mg/m. 4.11 Appearance Quality
The receiver 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 layer should be smooth and uniform in color, and there should be no defects that affect the appearance. 4.12 Completeness
4.12.1 The receiver supplied as a complete set should include: a.
Refrigerant liquid inlet and outlet joints:
Nuts or flanges.
According to the design requirements, the receiver may also include: safety device joints and safety devices,
refrigerant valve;
gas balance joints:
pressure gauge joints;
liquid level indicator or sight glass;
f. Support or saddle.
4.13 Warranty period
JB/T 7659.1--95
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 quality. 5 Test method
5.1 Nondestructive testing
The method of nondestructive testing of liquid reservoirs shall comply with the provisions of JB/T6917. 5.2 Pressure resistance and air tightness test
The pressure and air tightness test method of the liquid reservoir shall comply with the provisions of JB/T6917. When the liquid reservoir is equipped with a liquid level indicator or a sight glass, the test pressure of the liquid level indicator and the sight glass shall comply with the provisions of JB/T6918. 5.3 Cleanliness determination
The cleanliness determination of the liquid reservoir can refer to the provisions of ZBJ73029. 5.4 Inflatable protection
Liquid storage tanks shipped separately should be filled with positive pressure dry nitrogen or specially treated dry air (with a dew point below 30°C) after the test, with a maximum pressure not exceeding 0.1MPa, and should be sealed immediately. 6 Inspection rules
6.1 General requirements
Liquid storage tanks should be inspected by the manufacturer's technical inspection department in accordance with this standard and technical documents, and can only be assembled or shipped after passing the inspection. 6.2 Inspection items
6.2.1 Inspection classification
The inspection of liquid storage tanks is divided into factory inspection and type inspection. 6.2.2 Inspection items
The inspection items of liquid storage tanks shall be in accordance with the provisions of Table 1. Table 1
Inspection items
Cleanliness
Material report of pressure-bearing components
Processing quality
Appearance quality
Non-destructive testing report
Pressure test, airtightness test
Product completeness
Product label content and factory documents
6.3 Factory inspection
Factory inspection shall be carried out for each liquid receiver after it is manufactured. 6.4 Type inspection
Factory inspection
Type inspection shall be carried out for new products of at least one specification of liquid receiver or old products that have undergone major reforms. Type inspection
Marking, packaging and transportation
7.1 Marking
JB/T7659.1—95
The liquid receiver should be fixed with a label on a conspicuous and flat position. The label should comply with the provisions of GB/T13306. The content marked on the label should include the maximum liquid storage capacity. Other contents can refer to the provisions of JB/T6917. Note: Maximum liquid storage capacity - when expressed in m or L, it is a volume not greater than 80% of the total volume of the liquid receiver; when expressed in kg, it is the weight calculated by 80% of the volume of the liquid receiver and the density of the saturated liquid of the specified refrigerant at 32°C. 7.2 Packaging and transportation
7.2.1 The packaging and transportation of liquid receivers shipped separately can refer to the provisions of JB/T6917. 7.2.2 Liquid storage tanks shall be accompanied by the following factory documents when leaving the factory: product certificate;
product quality certificate;
completion drawing with design approval stamp and completion stamp; liquid storage tanks shipped separately shall also provide product instructions and packing list. 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 Shanghai Lingqi Machinery and Nanjing Wuzhou Refrigeration (Group) Company. The main drafters of this standard are Shen Hesheng and Mao Yongnian. 1466
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