JB/T 3356.1-1999 This standard is a revision of ZB J76 006-88 "Test Method for Performance of Cryogenic Liquid Containers". This standard specifies the test method for determining the performance of cryogenic liquid containers. This standard is used to determine the static daily evaporation rate of containers containing cryogenic liquefied gases. This standard was first issued in June 1988. JB/T 3356.1-1999 Test Method for Performance of Cryogenic Liquid Containers JB/T3356.1-1999 Standard Download Decompression Password: www.bzxz.net

ICS71.100.20
Machinery Industry Standard of the People's Republic of China
JB/T3356.1-1999
Cryogenic Liquid Container
Performance Test Methods
Performance test methods for cryogenic liquid containers1999-07-12 Issued
National Bureau of Machinery Industry
2000-01-01 Implementation
JB/T3356.1-1999
This standard is a revision of ZBJ7600688 "Performance Test Methods for Cryogenic Liquid Containers". Compared with ZBJ7600688, the main technical content of this standard has been changed as follows: "Foreword" has been added.
- The subject content "This standard specifies the test methods for determining the performance of cryogenic liquid containers" has been added to the scope of Chapter 1. This standard replaces ZBJ76006-88 from the date of implementation. This standard is proposed and managed by the Technical Committee for Standardization of Gas Separation and Liquefaction Equipment. The drafting unit of this standard is Sichuan Air Separation Equipment (Group) Co., Ltd. The main drafters of this standard are Liao Xingcai and Ji Honghua. This standard was first issued in June 1988. bZxz.net
1 Scope
Machinery Industry Standard of the People's Republic of China
Performance test methods for cryogenic liquid containers
Performance test methods for cryogenic liquid containers This standard specifies the test methods for determining the performance of cryogenic liquid containers. This standard is applicable to the determination of the static daily evaporation rate of containers containing cryogenic liquefied gas. 2 Test instruments and equipment
2.1 Volumetric method
a) Wet flow meter, measurement error ±1%; b) Thermometer, measurement error ±0.5℃; ) Barometer, measurement error ±50Pa:
d) U-type differential pressure gauge:
e) Water heating stabilizer, valves, and pipelines should be clean and leak-free. 2.2 Weighing method
The maximum weighing capacity of the measuring scale shall not be greater than twice the weight of the container after filling with liquid, and the weighing error shall be ±0.5%. The measuring instrument shall be a qualified instrument verified by the metrology department and within the validity period. 2.3
3 Test conditions
The test medium shall be the storage medium specified in the design. 3.1
3.2 The liquid filling volume during the test shall not be less than half of the effective volume. 3.3 The test shall begin after the container is filled with liquid and left to stand for 48 hours, and the standing time may also be determined according to the specific situation. 3.4 The container test may be carried out in the production plant, or at the user or container use site. 4 Test steps
4.1 Weighing method
JB/T3356.1-1999
Replaces ZBJ76006-88
4.1.1 At the beginning of the test, measure the weight A of the liquid container, and after standing for 24 hours, measure the weight B of the container and make a record. 4.2 Volumetric method
4.2.1 The test is carried out on a special test bench, and the test system is shown in Figure 1. 4.2.2 From the beginning of the container test, record the liquid evaporation flow rate, ambient atmospheric pressure, flow meter outlet temperature, and ambient temperature once every hour, for a total of 24 times, and take the average value as the calculated value. Approved by the State Bureau of Machinery Industry on July 12, 1999 and implemented on January 1, 2000
JB/T3356.1—1999
1-Test container: 2, 6 Control valve: 3-Water heating stabilizer: 4-U-shaped differential pressure gauge: 5-Thermometer: 7 Flow meter Figure 1
5 Calculation of evaporation rate
Weighing method Calculate according to formula (1):
Where: n-
- 4=B-) k×100%
G(T3-T2)
Daily evaporation rate of the container under test, %
Weight of the container at the beginning of the test, kg or g:
Weight of the container after 24 hours of test, kg or g:Effective liquid storage capacity of the container, kg or g:
Instrument calibration coefficient;
-reference temperature specified in the standard, 293K;
T, boiling point temperature of the test medium, K;
T,-ambient temperature, K.
The volumetric method is calculated according to formula (2):
Where: n-
24B Top(Ti-T2)k×100%
Daily evaporation rate of the container under test, %
AVTpo(T-T2)
A＇——Vaporization amount of IL cryogenic liquid at 273K, 1.05x10'Pa, L/L; V
Effective volume of container, L:
——Evaporation flow rate within 1h during test, L; p
Ambient atmospheric pressure, Pa
Atmospheric pressure under standard state, 1.013×10'PaFlowmeter outlet temperature, K;
Temperature under standard state, 273K;
Instrument calibration coefficient:
JB/T3356.1-1999
T,—reference temperature specified in the standard, 293K; T, boiling point temperature of test medium, K;
T,—ambient temperature, K.
Test Report
The contents of the test report should include:
a) Commissioning unit;
b) Name, model, code and number of the test container; c) Test method;
d) Test medium;
e) Records of each time and average value;
f) Calculation results;
g) Test unit and test personnel, test date; h) Test location.
Mechanical Industry Standard
Cryogenic Liquid Container
Performance Test Method
JB/T335611999
Published by the Machinery Standardization Research Institute of the Ministry of Machinery Industry Printed by the Machinery Standardization Research Institute of the Ministry of Machinery Industry (No. 2 Shouti South Road, Beijing: Postal Code 100044)*
1/16 Printing Sheet 1/2 Word Count 8000
Format 880×1230
First Printing in August 1999
First Edition in August 1999
Print Quantity 1-500
Price 500 Yuan
99-161
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