This standard specifies the classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of powder common insulated storage tanks (hereinafter referred to as storage tanks). This standard is applicable to storage tanks for storing cryogenic liquids (liquid oxygen, liquid nitrogen). JB/T 9077-1999 Powder Common Insulated Storage Tanks JB/T9077-1999 Standard download decompression password: www.bzxz.net

1CS 71.100.20
Machinery Industry Standard of the People's Republic of China
JB/T9077—1999
Cogventional Powder Insulation Tanks
1999-07-12 Issued
National Machinery Industry Bureau
2000-01-1 Implementation
JB/L9077—1999
This standard is a revision of 2J76022.90 Cogventional Powder Insulation Tanks. During the revision, the original standard was revised. Compared with the original standard, the main technical content changes are as follows: the efficiency index of liquid nitrogen in some specifications has been adjusted. The original standard "5 test methods and inspection specifications" is changed to "s test methods", "6 inspection specifications" and the inspection contents are modified. This standard replaces ZBJ76022-90 from the date of implementation. This standard is proposed by the Technical Committee for Standardization of Gas Separation and Liquefaction Equipment. The drafting unit of this standard is Yeerbin Chuangche Machinery Factory. The main drafters of this standard are Mou Yongnian and Liu Aiqin. This standard was first issued in October 1990. Scope
Machinery Industry Standards of the People's Republic of China
Powder insulation paste slots
ConventlonafgowderlnsuiatlontaaksJBT 9077-1995
Replacement 7R6 U27H1
This standard specifies the classification, technical requirements, test methods, inspection specifications and marking of thermal insulation containers (hereinafter referred to as storage containers), including the transportation and storage of cryogenic liquids (usually liquid nitrogen). 2
Cited standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards are subject to revision, and all parties using this standard shall discuss the possibility of using the latest version of the following standard. GB159
Steel pressure door container| |tt||GB/T10607—1989
Air separation equipment product model numbering method
GB/T13306—1991 Label
JB/T2536-1980
JR/T2549—1994
Positive force paint, packaging, transportation
Additional air separation equipment manufacturing technology condensation low temperature liquid container performance test method
JD/T3356.1—1999
JDT6896—1993
Air separation equipment surface clarity
3.1 Types a) Multiple containers, 6) Single container, Note: Multiple containers are made up of a container and an outer shell: The single container is made up of · ... 4.2 The storage tank shall be designed and adapted to the climate and environmental conditions of the area of ​​use to ensure normal operation.
4.3 The storage tank must be equipped with qualified safety valves (or explosive pieces), pressure gauges and liquid gauges. The installation and use of the storage tank shall comply with the provisions of the relevant standards and regulations. 4.4 The storage tank must be equipped with a reliable belt avoidance device. 4.5 The specifications and performance parameters of the storage tank shall comply with the provisions of the table! Table "Specifications and performance parameters
Effective narrow area
Working pressure www.bzxz.net
Insulation layer thickness refers to the total distance between the exposed outer wall and the exposed inner wall -.
2 and evaporation refers to the purchase period of the external environment car 29%, (.101MPx condition, the thermal layer
s:1150
.6 If the specifications and performance data in Table 1 cannot meet the user's requirements, according to the contract provisions 4. Materials
Daily evaporation table %
4.7.1 The materials used to manufacture the storage container must have a material certificate; the materials used to manufacture the storage pressure components must comply with the provisions of the "Case Regulations", and the main components must be accompanied by a material certificate; the main materials with incomplete material certificates, such as the material quality certificate, should be re-inspected 4. 2. Thermal expansion material spheroidal rock (pearl sand) shall meet the following requirements: Particle size: 0.05-1.2mm, not less than 90%
Bulk density: 45-R0kg/ml;
Moisture content (mass): less than 1%;
Thermal conductivity (average value at -310K in the range of 1: 0.02B~0.030W(mK)2
JB/T9077-1999
4.7.3 Insulation material foam glass shall meet the following requirements: Bulk density: 160-[90kg/m;
Moisture content (thin mass): %0.2%
Thermal conductivity (average value at atmospheric pressure and temperature 73~673K): 0.052~0 .070W (m·K) Compression elasticity: 0.6BMPa
Bending strength: 0.49MPa
4.7.4 All parts inside the shell shall not be made of combustible materials. 4.8 The inner container [including the surface in contact with the storage medium in the gas handling system must be strictly disinfected to eliminate slag, iron filings, oxidation products, dust and all dirt and materials, and thoroughly remove impurities and oil. The surface cleaning method shall comply with the provisions of JB/T6896. 4.9: Welding inspection
4.9. [The gas filter pipeline of the storage container must be inspected by radiography, the seam inspection of steel troughs shall not be lower than the provisions of B150, and the welding inspection percentage and qualified standard of lead troughs shall not be lower than The requirements of B/1254 shall be followed, and the requirements of other seams shall be in accordance with the requirements of the drawings.
For the bottom plate welds of large containers that are easy to assemble and weld, if the radiographic inspection is indeed difficult, it is allowed to use a penetration inspection, and cracks and delamination defects are not allowed.
4.9.2 For the compression welds of the containers, a penetration inspection shall be carried out, and the welding joints shall not have any defects or delamination defects. 4.10 The containers of multi-container type storage tanks shall be subjected to pressure tests according to the items specified in the drawings, and the test output and test methods shall comply with the provisions of the respective specifications.
4.11 The containers of a single container type storage tank shall be subjected to a pressure test, and the test items and test force shall be in accordance with the provisions. 4.12 The interlayer between the outer shell and the container shall generally be subjected to a gas test, and the test output and test force shall be determined according to the drawings. 4.13 The pressure gauge nameplate shall be set at the obvious position of the main tank, and the content on the nameplate shall comply with the provisions of the "Regulations on Pressure Gauges". 4.14 Under the condition that the user complies with the transportation, storage and maintenance regulations of the main tank, the manufacturer shall repair or replace parts free of charge within 1 month from the date of shipment; within 15 months from the date of delivery, if the product is damaged or cannot be used normally due to quality problems. 5 Test methods
s.1 Pressure test
The pressure test of the completed main tank shall be carried out at the manufacturer or installation site. The test method shall comply with the provisions of the "Regulations on Pressure Gauges". The test pressure shall comply with the provisions of the "Regulations on Pressure Gauges" or drawings.
5.2 Evaporation rate test
The static evaporation rate shall be tested at the user's site after the main tank is installed. The test method shall comply with the provisions of [B/T3356]. Inspection rules
6.1 The manufacturer shall inspect each storage tank according to the requirements of this standard and product drawings (except daily evaporation rate). After all inspections are completed, a product quality certificate shall be issued.
6.2 When the structure, material or process of the tank is greatly modified, or when there are other requirements in the contract, the daily evaporation rate shall be inspected, and the inspection results shall comply with the provisions of this standard or the contract:
7 Marking, packaging, transportation and storage
3.1 Marking
JB/T9077-1999
7.1.1 Storage shall be marked with product labels in obvious places and shall comply with the provisions of GB/T 1330. 7.1.2 The label includes:
product model;
b) product name:
seven important points: design bed pressure, design temperature, storage medium, effective volume, etc.; production number:
e) production date:
) manufacturer name.
7.2 The following technical documents and drawings shall be attached when the storage tank is delivered: a) Instruction manual; b) Product quality certificate; e) Packing list; d) Process flow chart, foundation drawing and process drawing. 7.3 The contents of the product quality certificate shall comply with the provisions of 150. 7.4 The accompanying documents shall be placed in a protective packaging and fixed in the designated position in the packaging box. 7.5 The container and pipeline system of the manufactured tank shall be filled with dry hydrogen after completion. 7.6 The storage, packaging and transportation of the purchased tank shall comply with the provisions of JB/T2536. 7.7 Storage 7.7.1 The storage tank shall be placed in a dry and rainy place and should be off the ground. 7.7.2 The storage time of the storage tank is relatively long, and the nitrogen filled shall be replenished regularly.
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