Some standard content:
National Standard of the People's Republic of China
Small volume dissolved acetylene cylinders
Small volume dissolved acetylene cylinders1Subject content and scope of application
GB 16164-1996
This standard specifies the classification, technical requirements, test methods, inspection rules, marking, coating, packaging, transportation and storage of small volume dissolved acetylene cylinders (hereinafter referred to as small volume acetylene cylinders). This standard is applicable to steel dissolved acetylene cylinders with a reference temperature of 15°C, a limited filling pressure of less than 1.52MPa, a maximum operating temperature of 40°C, a nominal volume of less than 10L, containing porous fillers and solvents, and movable and refillable. This standard does not apply to other containers containing dissolved acetylene. Note: The pressure in this standard refers to the gauge pressure.
2 Reference standards
GB5099
GB5100
GB6026
GB 6819
GB7307
GB8335
Seamless steel gas cylinders
Welded steel gas cylinders
Industrial acetone
Dissolved acetylene
Non-threaded pipe threads
Special threads for gas cylinders
GB10879
GB 11638
GB11639
Dissolved acetylene cylinder valve
Dissolved acetylene cylinder
Technical index determination method of porous filler of dissolved acetylene cylinderNon-destructive testing of pressure vessels
JB4730
3 Terminology
3.1 Seamless small volume acetylene cylinder
Small volume acetylene cylinder with seamless steel cylinder as the cylinder body. 3.2 Welded small volume acetylene cylinder
Small volume acetylene cylinder with welded steel cylinder as the cylinder body. 4 Code
Nominal diameter of a seamless small volume acetylene cylinder, mm; D.
D.—Nominal diameter of a welded small-volume acetylene cylinder, mm; continuous gas release volume of a test cylinder at a time, kg; fA
-filling length, mm;
htHeight of the packing compressive strength test specimen, mm; Approved by the State Technical Supervision Bureau on January 25, 1996, 1-10
Implementation on October 1, 1996
GB 16164—1996
-Porosity of packing, bulk densityHeight of sample, mm;Specified acetone loss of the test bottle during the first deflation, kg;Amount of acetone collected by the gas-liquid separation bottle after the test bottle is deflated, kg;Acetylene filling amount of the test bottle, kg;
Specified acetone filling amount, kg;
Mass of the test bottle, kg;
Mass of the test bottle after deflation, kg;
Mass of the acetone collection device, kg g;
Mass of acetone collection device after first deflation, kg;Mass of gas-liquid separation bottle, kg,
Mass of gas-liquid separation bottle after deflation, kg;Permissible deviation of acetone filling amount, kg;
Design wall thickness of cylinder body, mm;
Actual volume of acetylene cylinder, L;
Nominal volume of acetylene cylinder, L;
Specified first deflation volume of test bottle,;
Specified flow rate of test bottle during performance test, L/min—porosity of packing,%.
5 Product classification
5.1 Product type
Small-volume acetylene cylinders are divided into seamless small-volume acetylene cylinders and welded small-volume acetylene cylinders. The cylinder body should generally conform to the type shown in Figure 1. The typical structure is shown in Figure 2.
Bottle body type diagram
GB16164—1996
Figure 2, typical structure diagram
5.2 Specifications
5.2.1 The nominal volume and nominal diameter of seamless small-volume acetylene bottles shall comply with the provisions of Table 1. Table
Nominal volume V.
Nominal value, L
Allowable deviation, %wwW.bzxz.Net
Nominal value, mm
89,108
120,140
140,152
5.2.2 The nominal volume and nominal diameter of welded small-volume acetylene bottles shall comply with the provisions of Table 2. 142
Upper head
Lower head
Nominal diameter D.
Allowable deviation, %
Nominal value, L
6 Technical requirements
6.1 Steel cylinder
Nominal volume V.
GB16164-1996
Allowable deviation, %
Nominal diameter Dg
6.1.1 The design, manufacture, testing and inspection of seamless steel cylinders and welded steel cylinders shall comply with the provisions of GB5099 and GB5100 standards and product drawings respectively, but the specifications, test pressure, non-destructive testing, threads and markings must comply with the provisions of this standard. 6.1.2 The water pressure test pressure of steel cylinders is 5.2MPa. 6.1.3 The airtightness test pressure of steel cylinders is 3.0MPa. 6.1.4 Steel cylinders with a nominal volume greater than 4L that cannot stand upright on their own should have a base. 6.1.5 The main weld of a welded steel cylinder is only allowed to have one girth weld. 6.1.6 The main welds of welded steel cylinders shall be subjected to 100% radiographic inspection one by one according to JB4730. The quality of the radiographic film shall be AB grade, and the weld defects shall not exceed level II to be qualified. When the product has been put into batch production practice for more than 12 months, it has been proved that there are quality management and technical measures to ensure it, and the welding process and welding quality are stable, it is allowed to conduct partial radiographic inspection of the main welds one by one with the approval of the labor department of the province, city or autonomous region. The radiographic length shall not be less than 20% of the length of the weld, and the radiographic area shall include the junction of the weld start and end arcs. The weld defects shall not exceed level II to be qualified. 6.1.7 The body material of seamless steel cylinders shall comply with the provisions of GB5099, and the body material of welded steel cylinders shall comply with the provisions of GB5100. 6.1.8 The thread of the valve seat of the steel cylinder shall comply with the provisions of GB8335. 6.2 Filler
6.2.1 The comprehensive performance of the filler in small-volume acetylene cylinders should enable the finished cylinder to pass the various safety performance tests and performance tests specified in 8.2.3.
6.2.2 Under no circumstances should the filler react chemically with or cause damage to acetylene, acetone, cylinders or accessories. 6.2.3 The filler should be integral and uniform, without penetrating cracks or disintegration. 6.2.4
The packing shall meet the following requirements:
The porosity shall be within the range of 90% to 92%,
The volume density shall be less than or equal to 270g/L;
The compressive strength shall be greater than or equal to 1.8N/mm;
The total volume of the surface holes shall not exceed 5.0cm2, and the volume of a single hole shall not exceed 1.0cm; The total gap between the packing and the bottle wall shall not exceed 0.4% of the packing diameter or length when measured radially and axially, and the shoulder axial gap shall not exceed 0.3% of the packing length.
6.3 Attachments
6.3.1 The bottle valve shall meet the requirements of GB10879, the outlet thread shall be G%A-LH or G%A-LH, and meet the requirements of GB7307. 6.3.2 For small-volume acetylene cylinders, acetylene cylinder valves with fusible alloy safety devices must be installed, and the operating temperature of the fusible alloy is 100 ± 5°C. 6.3.3 The sealing material used at the connection between the cylinder valve and the cylinder should not react chemically with acetylene, acetone, etc. 6.3.4 For small-volume acetylene cylinders with a nominal volume greater than 4L, a bottle cap or protective cover must be provided. The quality tolerance of the bottle cap or protective cover should not exceed 5% of the calculated value and should comply with the relevant standards. 143
6.4 Appearance of acetylene cylinders
GB 16164--1996
6.4.1 The surface of the bottle body shall not have scratches and corrosion defects with a depth exceeding 0.1S, otherwise it shall be ground. The ground area shall have a smooth transition, and its wall thickness shall not be less than the designed wall thickness.
6.4.2 The accessories shall be intact, and the assembly shall comply with the requirements of the product drawings. 6.5 Air tightness
After the steel cylinder filled with filler and accessories are assembled, there shall be no leakage under the condition that the pressure inside the cylinder is 3.0MPa and the duration is not less than 3min. 6.6 Acetone
6.6.1 The quality of acetone shall not be lower than the requirements of first-class products in GB6026. 6.6.2 The specified filling amount of acetone shall be calculated according to formula (1). The calculated value shall retain three significant figures and the remaining figures shall be discarded. m. -- 0. 3660V .-
6.6.3 The allowable deviation (△m) of the acetone filling amount shall be a positive value and its value shall not exceed 3% of the specified filling amount. 6.7 Tare weight of acetylene cylinder
. (1)
Electricity
After the steel cylinder filled with filler and accessories (bottle valve, removable bottle cap) are assembled, the mass shall be weighed and the weighed value shall be added to the value specified in 6.6.2. The specified filling volume of acetone (m) calculated in Article 2 is the tare weight of the acetylene cylinder, with four significant figures. 6.8 The limited filling pressure
shall comply with the provisions of 6.8 in GB11638.
6.9 Safety performance
shall comply with the provisions of 6.9 in GB11638.
6.10 Performance
The acetylene cylinder shall have good continuous deflation capacity and acetone retention capacity. When the small volume acetylene cylinder is in the range of 15-25℃, the small volume acetylene cylinders of different specifications shall meet the following requirements when continuously deflated at a flow rate (Q) not less than that in Table 3: When the small volume acetylene cylinders of different specifications are deflated for the first time at the flow rate specified in Table 3, the acetone loss () shall not be greater than that in Table 3.
The continuous deflation volume of small volume acetylene cylinders of different specifications shall not be less than 60% of the acetylene gas filling volume (mA) of the tested cylinder. b.
Nominal volume V.
6.11 Other requirements
First gas release volume W
Acetone loss
6.11.1 The scales required for the manufacture, filling and testing of small-volume B-cylinders shall be kept accurate, and the maximum weighing value shall be 1-5~3.0 times the actual weighing value, with a tolerance of no more than 0.5g, and the inspection cycle shall not exceed 3 months. 6.11.2 The instruments in the production equipment and test equipment shall be calibrated in accordance with relevant regulations during continuous production; if there is no regulation, they shall be calibrated once every 3 months, and those that have stopped production for more than half a year shall be calibrated at the start of production. 7 Test methods
7.1 Steel cylinder test
7.1.1 The test method for seamless steel cylinders shall be carried out in accordance with the provisions of GB5099. 7.1.2 The test method for welded steel cylinders shall be carried out in accordance with the provisions of GB5100. 144
7.2 Determination of filler technical indicators
GB 16164--1996
The determination method of filler technical indicators shall be implemented in accordance with the provisions of GB11639, but the weighing accuracy, special feeler gauge, sample preparation and size must comply with the provisions of this standard.
7.2.1 The special feeler gauge for measuring the gap between the filler and the cylinder of small-volume acetylene cylinder is shown in Figure 3, and the size specifications are shown in Table 4.2.5
Printing according to thickness A
Technical requirements: sharp edge and blunt.
Material: stainless steel.
3 Special feeler gauge
Porosity, bulk density samples, compressive strength samples are taken out of the filler from the bottle for filler detection as a whole, and large pieces of samples are cut as shown in Figure 4. Take one piece of each size according to Table 5. The compressive strength test specimens are required to have a flat load-bearing surface, and the verticality and parallelism tolerances should not exceed 3mm when checked on a flat plate. The porosity and volume density test specimens should have all surfaces flat, and any gap on any side checked with a ruler should not exceed 1mm. 145
Compressive strength test specimen
Nominal diameter of acetylene cylinder D. or Dg
Compressive strength test block size
aXbXht
Porosity, bulk density test block size
aXbXh2
GB16164--1996
Porosity, bulk density test specimen
Filling test sampling diagram
50×50×50
70×70×90
50×80×125
Note: The test block size should be measured in the middle of the geometric surface, and the arithmetic mean should be taken by measuring twice on the corresponding surface of the same part. 7.3 Appearance inspection of acetylene cylinders and packings
The appearance of small-volume acetylene cylinders and packings shall be carried out in accordance with the provisions of 7.2 and 7.5 of GB11638 respectively. 7.4 Airtightness test
The airtightness test of small-volume acetylene cylinders shall be carried out in accordance with the provisions of 7.3 of GB11638. 7.5 Safety performance test
The safety performance test method of small-volume acetylene cylinders is shown in Appendix A (Supplement). 7.6 Performance test
For the performance test method of small-volume acetylene cylinders, see Appendix A8 Inspection rules
8.1 Factory inspection
8.1.1 Unit-by-unit inspection
All acetylene cylinders leaving the factory shall be inspected unit-by-unit according to the items specified in Table 6146
90X90X110
Inspection items
Axial clearance of shoulder
Total spacing from the cylinder wall
Surface holes
Compressive strength
Volume density
Porosity
Air tightness
Tempering test||tt ||Water bath heating test
Simulated fire test
Performance test
8.1.2 Batch inspection
8.1.2.1 Batch inspection
GB161641996
Factory inspection
Test method
Type inspection
Judgment basis
According to the production sequence, each batch shall be no more than 200. When the stuffing is solidified in an autoclave (hereinafter referred to as the autoclave) or a special heating device (hereinafter referred to as the device), the acetylene cylinders in the same autoclave or device shall not exceed two batches and shall meet the following requirements: a. When the stuffing bottles in the autoclave or device exceed 200 and form two batches, each batch of stuffing bottles shall not cross autoclaves or devices; b. When the stuffing bottles in the autoclave or device are less than or equal to 200, the acetylene cylinders in the same batch or device shall not cross batches. 8.1.2.2 Inspection Items
All acetylene cylinders leaving the factory shall be batch inspected according to the items specified in Table 6. 8.1.2.3 Sampling Rules
Randomly select one bottle for packing test from each batch of acetylene cylinders. 8.1.2.4 Re-test Rules
For batch inspection items, if there is evidence that the test failure is caused by operating errors or failure of the testing equipment, another bottle shall be selected from the same packing or from the same batch for a second test; if it is qualified, the first test can be ignored. In batch inspection, if there are unqualified items, they shall be tested according to the following requirements:
When the packing bottles in the kettle or device are more than 200 and form two batches, two bottles shall be selected from the unqualified batch and re-tested according to 8.1.2.2. If the re-test results of the two bottles are both qualified, the batch of bottles is qualified. As long as one bottle still has unqualified items, the packing of the batch of bottles is judged to be unqualified.
When a batch of filling bottles is composed of multiple kettle or device filling bottles, two bottles should be taken from the same kettle or device bottle for re-inspection according to 8.1.2.2. If the re-inspection results of the two bottles are both qualified, the batch of bottles is qualified; as long as one bottle still has unqualified items, the filling of the kettle or device bottle is judged to be unqualified. At this time, for the remaining kettles or device bottles in the batch, one bottle is allowed to be taken from each kettle or device bottle and re-inspected according to 8.1.2.2. If the re-inspection results are qualified, the kettle or device bottle is qualified; if there are still unqualified items, the filling of the bottle or device bottle is judged to be unqualified.
8.2 Type inspection
GB16164-1996
8.2.1 The inspection conditions shall comply with the provisions of 8.2.1 in GB11638. 8.2.2 The batching requirements shall comply with the provisions of 8.2.2 in GB11638. 8.2.3 The inspection items shall comply with the provisions of Table 6. 8.2.4 The sampling rules shall comply with the following provisions: a. The number and status of the bottles used for each inspection item of type inspection shall comply with the provisions of Table 7. Table 7
Inspection items
Technical indicators of filling
Safety performance test
Tempering test
Drop treatment
Water bath heating test
Simulated fire test
Performance test
Note: ① Generally, acetylene with a pressure of 0.05MPa can be filled. Quantity
② Check the appearance, accessories, air tightness, tare weight, etc. of the acetylene cylinder. The acetylene filling amount is calculated according to formula (2)
ms+Ams
mA≥0.1938V
The calculated value is retained to two decimal places, and the rest is discarded. C
The quality of dissolved acetylene shall meet the requirements of GB6819. 8.2.5
The re-inspection rules shall be implemented as follows:
Saturated gas under atmospheric pressure
During the type inspection, if it is found that the factory inspection items are unqualified, the re-inspection rules shall be implemented in accordance with the corresponding provisions of 8.1.2.4. Remarks
If unqualified items are found during the type inspection, it is allowed to draw another number of acetylene cylinders specified in Table 7 from the same batch for re-inspection. If there are still unqualified items in the re-inspection, it is considered that the type inspection has failed. The handling method for type inspection failure shall be implemented in accordance with the provisions of 8.2.5.4 and 8.2.5.5 in GB11638. 9 Marking, coating, packaging, transportation, storage 9.1 Marking
9.1.1 Stamping
Stamping shall comply with the provisions of the "Safety Supervision Regulations for Dissolved Acetylene Cylinders", but the depth of the stamp shall not exceed 0.1S, and the font height shall comply with the provisions of the product drawings.
9.1.2 Color marking
The color marking of small volume acetylene cylinders shall comply with the provisions of 9.1.2 of GB11638. 9.2 Coating, packaging, transportation and storage
shall comply with the provisions of 9.2~9.5 of GB11638 and the product drawings. 10 Product certificates and batch inspection quality certificates shall comply with the provisions of Chapter 10 of GB11638.
A1 Safety performance test
A1.1 Tempering test
A1.1.1 Drop treatment
GB 16164—1996
Appendix A
Type inspection method for small volume acetylene cylinders
(Supplement)
Fill with the amount of acetone specified in Table 7, fill with acetylene gas to saturate the acetone under atmospheric pressure and perform drop treatment in accordance with the provisions of A1.1.1.2 of Appendix A of GB11638.
A1.1.2 Tempering steps
Test the test bottle that has been dropped according to the following steps. A1.1.2.1 Fill with the amount of acetylene gas specified in Table 7. A1.1.2.2 Store horizontally in a greenhouse at 15-20℃ for 2 days. A1.1.2.3 Immerse vertically in a water pool maintained at 35±2℃ for 1.5 hours. A1.1.2.4 Move vertically to the test site and install the detonator as shown in Figure A1. A1.1.2.5 Purge the detonator with acetylene gas of the same mass as the test bottle, but not the test bottle, and leave a certain amount of acetylene gas. A1.1.2.6 Fully open the bottle valve to determine that the purity of acetylene gas in the tempering tube is not less than 98%, then turn on the power and ignite as soon as possible. During ignition, the pressure in the bottle must not be lower than 95% of the water outlet pressure of the test bottle in the water pool. A1.1.2.7 After the temperature and pressure of the acetylene bottle return to normal, close the bottle valve and let it stand for 24 hours to release the acetylene gas in the bottle. After removing the bottle valve, check whether there is carbon black under the bottle valve to verify whether the tempering has been achieved. Pressure gauge interface
Figure A1 Schematic diagram of the tempering test detonator
1-QF-16 (PZ19.2) charging and discharging valve; 2--Ignition device A1.2 Water bath heating test
GB16164-1996
Pour acetone and acetylene gas according to the amount specified in Table 7, and perform the water bath heating test according to the steps specified in A1.2.2 and A1.2.3 in Appendix A of GB11638.
A1.3 Simulated fire test
A1.3.1Pour acetone and acetylene gas according to the amount specified in Table 7. A1.3.2 Store in a greenhouse with a temperature not lower than 20℃ for more than 24h. A1.3.3 Move vertically into the test device (hereinafter referred to as smoke) as shown in Figure A3 of Appendix A of GB11638 and ignite, but the inner diameter of the smoke window used for small-volume acetylene cylinders of different specifications should comply with the provisions of Table A1. Table A1
Nominal diameter D of acetylene cylinder. Or D
Inner diameter of smoke halogen
A1.3.4 Adjust the air volume and fuel volume to ensure that the temperature of the smoke waist is not lower than 650℃ within 5min after ignition, and it is required that the open flame shall not directly contact the test cylinder.
A2 Performance test
A2.1 Pour acetone and fill with acetylene gas according to the provisions of Table 7. A2.2 Inject a mixture of salt, ice and water into the heat-insulating container (5) shown in Figure A2, and control the temperature of the mixture in the range of -5±2℃. Use a scale with a maximum weighing capacity of 15kg and a tolerance of no more than 0.5g to weigh the mass m2 of the acetone collection device and the mass m3 of the gas-liquid separation bottle. A2.3 Connect the test device according to Figure A2. The nozzle structure and size should comply with the requirements of Figure A5 in Appendix A of GB11638. A2.4 Weigh the mass of the test bottle with a scale that has a maximum weighing capacity of 1.5 to 3.0 times the actual weighing capacity and a tolerance of no more than 0.5g. A2.5 Adjust the three-way joint, slowly open the bottle valve and adjust the rotor flowmeter I to release the gas at a calibrated flow rate with the reading of the pressure reducer low pressure gauge being 0.05MPa and the reading of flowmeter I being the specified flow value. When the weighing value of the test bottle indicates that the first gas release volume (W)g has been released, immediately adjust the three-way joint to reverse the air flow and adjust the reading of flowmeter 1 to the calibrated flow rate of the specified flow value until the reading of the high pressure gauge of the acetylene pressure reducer drops below 0.05MPa and the reading of the low pressure gauge drops to 0.01MPa, then close the bottle valve. A2.6 Re-weigh the mass m2 of the acetone collection device, the mass ms of the gas-liquid separation bottle and the mass m1 of the test bottle. A2.7 Calculate the acetone loss of the test bottle in the first gas release (W)g according to formula (A1): k,=m2 -m2
A2.8 Calculate the amount of acetone collected in the gas-liquid separation bottle according to formula (A2):,-m3'-m3
A2.9 Calculate the continuous gas release volume of the test bottle according to formula (A3): fA=m-(m'+k+k)
(Al)
(A2)
(A3)
Additional instructions:
Keep away from fire
GB16164—1 996
Acetone collection device
Figure A2 Schematic diagram of performance test device
1-Acetylene cylinder; 2-Acetylene pressure reducer; 3-Nozzle; 4-Tee joint, 5-Insulation container: 6-Salt, ice, water mixture 7-Liquid storage bottle, 8-Flowmeter 1; 9Flowmeter 1; 10-Gas-liquid separation bottle This standard adopts the Japanese Industrial Standard JISB8234-1988 "Steel Welding Dissolved Acetylene Container" in a non-equivalent manner. This standard is proposed by the Ministry of Labor of the People's Republic of China. This standard is technically coordinated and interpreted by the National Gas Cylinder Standardization Technical Committee. This standard was drafted by the Northeast Machinery Manufacturing General Administration. The main drafters of this standard are Zhang Quanyou, Han Likun, and Duan Xue. 1513 Connect the test device according to Figure A2. Its nozzle structure and size should meet the requirements of Figure A5 in Appendix A of GB11638. A2.4 Weigh the mass of the test bottle with a scale whose maximum weighing is 1.5 to 3.0 times the actual weighing and whose tolerance is not more than 0.5g. A2.5 Adjust the three-way joint, slowly open the bottle valve and adjust the rotor flowmeter I to release the gas at a calibrated flow rate with the reading of the pressure reducer low pressure gauge of 0.05MPa and the reading of flowmeter I as the specified flow value. When the weighing value of the test bottle indicates that the first gas release volume has been released by the specified value (W)g, immediately adjust the three-way joint to reverse the air flow and adjust the reading of flowmeter 1 to the calibrated flow rate of the specified flow value until the reading of the high pressure gauge of the acetylene pressure reducer drops below 0.05MPa and the reading of the low pressure gauge drops to 0.01MPa, then close the bottle valve. A2.6 Re-weigh the mass m2 of the acetone collection device, the mass ms of the gas-liquid separation bottle and the mass m1 of the test bottle. A2.7 Calculate the amount of acetone lost in the first release (W)g of the test bottle according to formula (A1): k,=m2-m2
A2.8 Calculate the amount of acetone collected in the gas-liquid separation bottle according to formula (A2):,-m3'-m3
A2.9 Calculate the amount of continuous release of the test bottle in one time according to formula (A3): fA=m-(m'+k+k)
(Al)
(A2)
(A3)
Additional instructions:
Do not approach fire
GB16164-1 996
Acetone collection device
Figure A2 Schematic diagram of performance test device
1-Acetylene cylinder; 2-Acetylene pressure reducer; 3-Nozzle; 4-Tee joint, 5-Insulation container: 6-Salt, ice, water mixture 7-Liquid storage bottle, 8-Flowmeter 1; 9Flowmeter 1; 10-Gas-liquid separation bottle This standard adopts the Japanese Industrial Standard JISB8234-1988 "Steel Welding Dissolved Acetylene Container" in a non-equivalent manner. This standard is proposed by the Ministry of Labor of the People's Republic of China. This standard is technically coordinated and interpreted by the National Gas Cylinder Standardization Technical Committee. This standard was drafted by the Northeast Machinery Manufacturing General Administration. The main drafters of this standard are Zhang Quanyou, Han Likun, and Duan Xue. 1513 Connect the test device according to Figure A2. Its nozzle structure and size should meet the requirements of Figure A5 in Appendix A of GB11638. A2.4 Weigh the mass of the test bottle with a scale whose maximum weighing is 1.5 to 3.0 times the actual weighing and whose tolerance is not more than 0.5g. A2.5 Adjust the three-way joint, slowly open the bottle valve and adjust the rotor flowmeter I to release the gas at a calibrated flow rate with the reading of the pressure reducer low pressure gauge of 0.05MPa and the reading of flowmeter I as the specified flow value. When the weighing value of the test bottle indicates that the first gas release volume has been released by the specified value (W)g, immediately adjust the three-way joint to reverse the air flow and adjust the reading of flowmeter 1 to the calibrated flow rate of the specified flow value until the reading of the high pressure gauge of the acetylene pressure reducer drops below 0.05MPa and the reading of the low pressure gauge drops to 0.01MPa, then close the bottle valve. A2.6 Re-weigh the mass m2 of the acetone collection device, the mass ms of the gas-liquid separation bottle and the mass m1 of the test bottle. A2.7 Calculate the amount of acetone lost in the first release (W)g of the test bottle according to formula (A1): k,=m2-m2
A2.8 Calculate the amount of acetone collected in the gas-liquid separation bottle according to formula (A2):,-m3'-m3
A2.9 Calculate the amount of continuous release of the test bottle in one time according to formula (A3): fA=m-(m'+k+k)
(Al)
(A2)
(A3)
Additional instructions:
Do not approach fire
GB16164-1 996
Acetone collection device
Figure A2 Schematic diagram of performance test device
1-Acetylene cylinder; 2-Acetylene pressure reducer; 3-Nozzle; 4-Tee joint, 5-Insulation container: 6-Salt, ice, water mixture 7-Liquid storage bottle, 8-Flowmeter 1; 9Flowmeter 1; 10-Gas-liquid separation bottle This standard adopts the Japanese Industrial Standard JISB8234-1988 "Steel Welding Dissolved Acetylene Container" in a non-equivalent manner. This standard is proposed by the Ministry of Labor of the People's Republic of China. This standard is technically coordinated and interpreted by the National Gas Cylinder Standardization Technical Committee. This standard was drafted by the Northeast Machinery Manufacturing General Administration. The main drafters of this standard are Zhang Quanyou, Han Likun, and Duan Xue. 151
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