Some standard content:
Ics.23.020.30
National Standard of the People's Republic of China
GB/T 9252—2001
Method for cycling test of gas cylinders2001- 01 - 10 Issued
2001 10-01 Implementation
GB/T9252200
This standard is the successor of GB/T9251 Cycling Test Method for Gas Cylinders. The original standard has played a positive role in regulating and guiding the fatigue test of gas cylinders. No problems have been found. The revisions to be made this time are as follows: 1. To make up for some of the defects in the G3505918 quality standard and the G3505918 quality standard. Some new or original methods have been added to the equipment specifications (such as the upper and lower limit pressures of the three-force cycle) to make it more suitable for the six, six, and six-way standards and standards. 2. The standard standards or test requirements after acceptance and the actual deviations over the years have been adjusted appropriately; the test equipment and test parameters have been adjusted appropriately, and the allowable deviation of the limit pressure of the three-force cycle has been adjusted appropriately to make it more reliable and reliable, and improve the operability of the standard: 3. The test equipment diagram in the A is also adjusted and the defects are more reasonable: 1. Add the clause that the effectiveness of the gas cylinder monitoring or verification device should be approved by the relevant superior competent department: 5. Add the clause that the gas droplet after the final fatigue test shall not be used to fill the gas cylinder: 5. The standard abbreviation format has been modified accordingly according to GB/1.1--133 and the regulations. Appendix A and Appendix R of this standard are both reminders. This standard replaces GB/ 4252-1S. This standard is issued by the National Gas Cylinder Standardization Technical Committee and is authorized by the National Gas Cylinder Standardization Technical Committee. The academic unit of this standard is Dalian University of Technology. The main drafters of this standard are Jinkou Nian, Ji Dongxue, Zhai Hongju, Ti Tong, and Li Gengling. This standard was issued on May 26, 2013, revised on January 1, 2013, and revised on January 3, 2013. Far Cycling Test of Gas Cylinder This standard sets the basic requirements of the test device, test methods and test operations, GB/T9252-2001, GB/T9252-1988, and GB/T9252-2001. This standard is applicable to the nominal working pressure of the gas cylinder with a nominal working pressure of less than MPa (hereinafter referred to as the same). 1. Far Cycling Test of Gas Cylinder This standard is applicable to the nominal working pressure of the gas cylinder with a nominal working pressure of less than MPa (hereinafter referred to as the same). 2. Definition This standard adopts the following definition. 2.1 During the far cycling test, the process of the pressure rise-maintaining-reducing sequence is called a far cycling. 2.2 Cycling pressure refers to the value of the repeated alternating pressure applied during the test. When the pressure reaches the specified maximum value, it is called the upper limit of the pressure; when the pressure reaches the specified lower limit, it is called the lower limit of the cycling pressure. 2.3 Maintenance time
During the cycle, the pressure should be kept constant. 2-4 Cycle frequency
The number of positive force changes in a unit time.
2.5 Pressure data; each positive force cycle is opened, and the pressure changes with time are recorded. That is, t curve. 2.6 Test cylinder
The general term for the cylinders undergoing the test, the cylinders undergoing the test, and the cylinders undergoing the test. 2.7 Test equipment
The combination of the water supply system, the control system, the pipelines and their components that provide the pressure required by the test cylinders, 2.8 Test system
The combination of the test equipment and the test cylinders
2.9 Pipeline
The pipeline and its components that can withstand the required pressure.
2.10 Test environment
A general term for the environment in which the test system is located and the test conditions. 3 Test equipment and process
3.1 The test equipment should consist of a switching control mechanism, a force measuring disk, a pressure cycle recorder, a safety device, a medium conveying pipeline, a test quality and temperature measurement and control device and auxiliary equipment. Test environment A (shown in Figure A1) is the test environment approved by the State Administration of Quality Supervision, Inspection and Quarantine on 2001-01-10.
GB/T 9252---2001
The basic pressure cycle flow chart of the above components is shown in the figure. 32 This standard uses a pressure cycle control device composed of a micro-test pressure sensor, a proportional electric flow control unit and a long-term steel, and Appendix 4 Figure A can also use a continuous pressure cycle device controlled by a service machine. 4 Basic requirements for test devices
4.1 The test device must have the function of being able to adjust the cycle pressure, cycle frequency, and pressure holding time within the specified range and to continuously perform pressure cycles through an automatic control device
4.2 The test device can automatically record the number of pressure cycles and can display and control the temperature of the test medium. 4.3 The air in the test system should be completely vented. 4.4 The pressure channel and its accessories (except the test gas cylinder) must avoid the pressure test: the pressure of the test piece should not be lower than the maximum allowable working pressure of the test device. The pressure holding time of the pressure test shall not exceed 300m. The pressure-bearing circuit's withstand test cycle should not exceed 10,000 times.
4.5 The pressure rise speed and the pressure regulation must be good. The pressure rise frequency must be adjusted before the pressure reaches the set value.
4.6 The test equipment must have a safety delay alarm for shutdown. When the upper limit of the positive rate cycle pressure is 5%, the machine can be started and when the test cylinder is full, the delay alarm can be given and the machine can be automatically shut down. 4. In addition, the test equipment does not have a cooling system for cooling the test medium to ensure that the test medium and the test gas are within the specified temperature range: When conducting low temperature or high temperature tests, the test system must have suitable insulation or insulation technology and corresponding test environment.
4.8 The test monitoring system must have appropriate safety measures to ensure the safety of the test equipment during the test. 2.9 The effectiveness of the tests on measuring instruments that undertake technical or numerical tests shall be approved by the relevant departments. 5.1 Only pressure gauges that have passed the calibration should be installed on the test device for at least one year. The pressure gauge accuracy should be not less than ten times the upper limit of the test gas pressure. The new pressure gauges should be inspected in pairs before each test. When the indicated values of the two pressure gauges are abnormal, they should be replaced in time.
5.2 The test device is equipped with a new positive pressure gauge (one is installed on the pipeline near the test gas bottle, and its range should be close to twice the pressure of the test bottle. When the test device is in operation, the pressure must not be stopped. The calibration of the gauge should be carried out in accordance with relevant regulations. 5.3 The minimum scale of the positive pressure gauge on the surface of the test gas bottle used to measure the temperature of the test medium should not be greater than 1. The control cycle of the gauge should be carried out in accordance with relevant regulations.
6 Test medium and test temperature
6.1 The filter medium used in the test shall be selected according to the specified performance and shall not cause the test cylinder to crack or break. The test equipment shall also be checked for non-commercial use.
E.2 During the temperature test, the temperature of the test medium and the test environment temperature shall be lower than T:6.3 During the fatigue test with nozzle, the surface of the test gas shall not exceed 50.6.4 The specific low temperature or high temperature test shall be carried out according to the relevant regulations, without changing the limits of .2 and 5.5.7 The test cylinder shall be selected from the middle position. Selection from the same batch of gas cylinders for testing: In order to ensure the validity of the test results, the representative gas cylinders with the specified minimum thickness or for the test port should be selected. At the same time, the gas cylinders with different fatigue performance should be selected according to the actual status of the gas cylinders and the rationality of the design. The test gas cylinders used for production inspection should be selected according to the relevant provisions of the inspection method. For special specifications of gas cylinders, the selection principle and quantity of the test gas cylinders shall be jointly determined by the entrusting unit and the test unit. 7.2 The entrusting unit shall provide the test unit with detailed technical data of the test cylinder, and the weld quality inspection of the gas cylinder shall be carried out according to the corresponding gas cylinder standards, and the weld line flaw detection film shall be provided. Seamless gas cylinders shall be inspected according to the corresponding gas cylinder standards, and the gas production frequency shall also be different from the bottom of the gas cylinder.
8 Test method
5.1 Inspection before gas test
. [. The relevant information of the test cylinder, such as the cylinder number, cylinder weight, internal volume, nominal working pressure and test pressure, etc., shall be checked. 81.? Measure the outer diameter of the test gas cylinder, the deviation of the original order, the thickness of the bottom (or the head) and other dimensions. 8.1.3 Macro inspection of the inside and outside. Check whether there are defects such as pits, embedded meat, grooves, scratches, wrinkles and spots. 8.2 Failure pressure || tt || 8.2.1 The adjustment of the fatigue test is determined by the standard. The upper limit pressure can generally be the hydraulic test pressure of the test gas, the nominal pressure or other pressure specified in the technical documents: the lower limit pressure shall not exceed 0 of the upper limit of the cycle pressure, and the change shall not exceed 2 of the upper limit of the cycle pressure according to the standard. B.3 Pressure holding time || tt || The pressure holding time of the test gas cylinder shall be sufficient to maintain the normal state of the pressure. The feedback pressure should be the same as that of the original pressure. It is like a stopped string or a wave, and the time between the upper and lower cases is relatively obvious. 4 Pressure cycle rate and effect
B.4 During the test, the pressure cycle rate is reduced by more than 15 times per minute, B.4. The pressure cycle effect is related to the connection (registered standard or according to the test date. 5 Test points
8.5.1 Tightly connect the test gas filled with test medium to the joint of the test device. The test connection can be changed according to the test requirements and the original capacity of the test device, but it must meet the requirements of 4.1. 8.5. Before the test, the company should add aluminum plugs to the bottle before the test to increase the pressure rise and drop rate. The filler does not react chemically with the test medium and does not cause impact and friction on the inner wall of the gas ring. 85.3 Under the working pressure lower than the rated pressure, the air in the system must be checked during the whole test of pressure increase and pressure reduction. 5.4 After the residual air is exhausted, the test system must be confirmed to have no leakage. Quickly observe the specified circulating pressure and select the pressure cycle, and start to automatically record the output pressure.
8.5.5 During the test, check the pressure and pressure waveform, and make sure that the pressure gauge displays the same value as the circulating pressure. The full test error is required. 9 Test precautions
91 During the test, the circulating pressure and the connection pipes of the traveler port are not recorded, and the stress state of the plate body is not applied according to the risk of the gas cylinder.
92 If the pressure cycle is abnormal during the verification process, the test should be stopped, the inspection should be carried out, and the abnormal situation should be eliminated. 9.3 It is not allowed to load or dismantle the tested gas cylinder and other parts under the condition of failure. 9.4 The test should be performed by a dedicated person and recorded. 10 Inspection and treatment after the test
1C.1 Check whether the plate has any looseness, whether the various components of the composite gas cylinder are loose, etc.
1C.2 Through dissection, check whether the tested gas cylinder (1 structure < minimum sequence length, welding diameter, energy consumption, etc.) after the test is consistent with the design requirements.
GR/T9252—2001
10-3 The gas cylinder that fails in the fatigue test should be analyzed, and the most effective part should be inspected at a low power and a protective inspection should be carried out to determine whether there is a metallurgical entrapment or metallurgical entrapment.
10.4 Based on the test results, the tested gas cylinder shall be evaluated according to the provisions of the relevant gas cylinder standards. 10.5 After the epidemic test, the tested gas cylinder shall not be used for other purposes except for the relevant tests or subsequent tests, especially for recharging, so as to avoid safety accidents. 11 Test ReportwwW.bzxz.Net
The test unit shall submit the test report to the commissioned test unit, and the report content and format shall be attached (see Appendix). GB/T9252
(shown in the record
gas cylinder fatigue test device process
gas analysis fatigue test equipment bone flow as shown in Figure A1 and A?. [一Test introduction 2一Test quality Ling and production example control equipment first: 3 sand filter: 4 inlet system (official adjustment 5 stage two three four M4) (- flow network: 7-- stop transmission path 4 control dynamic average: 9 force time record suction device: 10 net force agriculture (inspection use): 1 agriculture (case use) 12 test gas period 1 test monitoring 4 discharge network Figure 1 gas independent test stomach H flow box GB/T 9252—290
Test quality increase type benefit return Dong and test pull matching device: positive system flow one connection adjustment three four know to one hope to say read - average Shang station model effect hold change and amplify the camera number Shen Li technology and several. One electric core big loan one electric court room 13 one control plan, Huichuan newspaper element record procurement structure entrustment notice fun production use one not (now one month one accept analysis 7 test position step standard network
Figure A? Microcomputer control gas cylinder storage test device flow sleeve schematic diagram entrusted test unit price
Manufacturing Guang
Gas name
Nominal case volume
External straight light
Simplified parts design wall thickness
Head (or bottle bottom) design wall hall
Simplified, seal meaning material library number
GE/T 9252—2001
(recommended supplement)
Gas cylinder fatigue test report
Product number
Test according to GB9259-200
MPaL Hydraulic test pressure
L: Actual penetration
mmrTotal length
m+simple measured minimum wall
mm; Minimum thickness reduction of the right (or short bottom)
Mechanical work of the cylinder body material (measured value provided by the cylinder manufacturer)r
Gas cylinder flaw detection equipment (provided by the cylinder manufacturer: Test quality
Lift resistance Time:
Fatigue gauge test pressure
Upper limit pressure
9: Lower limit pressure
Pressure shrink ring measured pressure curve (see figure) During adjustment, the measured temperature range of the outer surface of the cylinder Test situation record:
Test results,
Test start date:
Test signature:
Report date
MIa Balance ring speed
Ma: Upper limit pressure holding time
MPa; Lower limit pressure holding time
Signature of the person in charge of the test unit:
Seal of the test unit2 Through dissection, check whether the test gas cylinder after the test (including the minimum length, welding diameter, energy consumption, etc.) is consistent with the design requirements or the basic material.
GR/T9252—2001
10-3 The gas cylinder that fails in the fatigue test should be analyzed, and the effective part should be inspected at a low power level to determine whether there is metal or metal entrapment.
10.4 According to the test results, the test cylinder should be evaluated according to the provisions of the relevant gas cylinder standards. 10.5 The test gas cylinder after the fatigue test shall not be used for other purposes except for the relevant test or subsequent tests, especially not for recharging, so as to avoid safety accidents. 11 Test report
The test unit shall submit the test report to the commissioned test unit, and the report content and format shall be attached (see the appendix for details). GB/T9252
(shown in the record
gas cylinder fatigue test device process
gas analysis fatigue test equipment bone flow as shown in Figure A1 and A?. [一Test introduction 2一Test quality Ling and production example control equipment first: 3 sand filter: 4 inlet system (official adjustment 5 stage two three four M4) (- flow network: 7-- stop transmission path 4 control dynamic average: 9 force time record suction device: 10 net force agriculture (inspection use): 1 agriculture (case use) 12 test gas period 1 test monitoring 4 discharge network Figure 1 gas independent test stomach H flow box GB/T 9252—290
Test quality increase type benefit return Dong and test pull matching device: positive system flow one connection adjustment three four know to one hope to say read - average Shang station model effect hold change and amplify the camera number Shen Li technology and several. One electric core big loan one electric court room 13 one control plan, Huichuan newspaper element record procurement structure entrustment notice fun production use one not (now one month one accept analysis 7 test position step standard network
Figure A? Microcomputer control gas cylinder storage test device flow sleeve schematic diagram entrusted test unit price
Manufacturing Guang
Gas name
Nominal case volume
External straight light
Simplified parts design wall thickness
Head (or bottle bottom) design wall hall
Simplified, seal meaning material library number
GE/T 9252—2001
(recommended supplement)
Gas cylinder fatigue test report
Product number
Test according to GB9259-200
MPaL Hydraulic test pressure
L: Actual penetration
mmrTotal length
m+simple measured minimum wall
mm; Minimum thickness reduction of the right (or short bottom)
Mechanical work of the cylinder body material (measured value provided by the cylinder manufacturer)r
Gas cylinder flaw detection equipment (provided by the cylinder manufacturer: Test quality
Lift resistance Time:
Fatigue gauge test pressure
Upper limit pressure
9: Lower limit pressure
Pressure shrink ring measured pressure curve (see figure) During adjustment, the measured temperature range of the outer surface of the cylinder Test situation record:
Test results,
Test start date:
Test signature:
Report date
MIa Balance ring speed
Ma: Upper limit pressure holding time
MPa; Lower limit pressure holding time
Signature of the person in charge of the test unit:
Seal of the test unit2 Through dissection, check whether the test gas cylinder after the test (including the minimum length, welding diameter, energy consumption, etc.) is consistent with the design requirements or the basic material.
GR/T9252—2001
10-3 The gas cylinder that fails in the fatigue test should be analyzed, and the effective part should be inspected at a low power level to determine whether there is metal or metal entrapment.
10.4 According to the test results, the test cylinder should be evaluated according to the provisions of the relevant gas cylinder standards. 10.5 The test gas cylinder after the fatigue test shall not be used for other purposes except for the relevant test or subsequent tests, especially not for recharging, so as to avoid safety accidents. 11 Test report
The test unit shall submit the test report to the commissioned test unit, and the report content and format shall be attached (see the appendix for details). GB/T9252
(shown in the record
gas cylinder fatigue test device process
gas analysis fatigue test equipment bone flow as shown in Figure A1 and A?. [一Test introduction 2一Test quality Ling and production example control equipment first: 3 sand filter: 4 inlet system (official adjustment 5 stage two three four M4) (- flow network: 7-- stop transmission path 4 control dynamic average: 9 force time record suction device: 10 net force agriculture (inspection use): 1 agriculture (case use) 12 test gas period 1 test monitoring 4 discharge network Figure 1 gas independent test stomach H flow box GB/T 9252—290
Test quality increase type benefit return Dong and test pull matching device: positive system flow one connection adjustment three four know to one hope to say read - average Shang station model effect hold change and amplify the camera number Shen Li technology and several. One electric core big loan one electric court room 13 one control plan, Huichuan newspaper element record procurement structure entrustment notice fun production use one not (now one month one accept analysis 7 test position step standard network
Figure A? Microcomputer control gas cylinder storage test device flow sleeve schematic diagram entrusted test unit price
Manufacturing Guang
Gas name
Nominal case volume
External straight light
Simplified parts design wall thickness
Head (or bottle bottom) design wall hall
Simplified, seal meaning material library number
GE/T 9252—2001
(recommended supplement)
Gas cylinder fatigue test report
Product number
Test according to GB9259-200
MPaL Hydraulic test pressure
L: Actual penetration
mmrTotal length
m+simple measured minimum wall
mm; Minimum thickness reduction of the right (or short bottom)
Mechanical work of the cylinder body material (measured value provided by the cylinder manufacturer)r
Gas cylinder flaw detection equipment (provided by the cylinder manufacturer: Test quality
Lift resistance Time:
Fatigue gauge test pressure
Upper limit pressure
9: Lower limit pressure
Pressure shrink ring measured pressure curve (see figure) During adjustment, the measured temperature range of the outer surface of the cylinder Test situation record:
Test results,
Test start date:
Test signature:
Report date
MIa Balance ring speed
Ma: Upper limit pressure holding time
MPa; Lower limit pressure holding time
Signature of the person in charge of the test unit:
Seal of the test unit
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.