This standard is partially based on the "Principles of Construction, Testing and Use of Filter-type Self-rescuers for Underground Mining. FSR Principle (1982)" of the West German Mine Rescue Committee. This standard is applicable to the evaluation of carbon monoxide filter-type self-rescuers for mining to see if they meet the requirements of the product standard and can be used as a test method for product quality control. GB/T 8160-1987 Test method for carbon monoxide filter-type self-rescuers for mining GB/T8160-1987 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Filter-type self-rescuer for carbon monoxide for mines
Test methods
Test methods of mine filter self rescuer for carbon monoxide
UDC614.894-001-4
GB816087
This standard is partially based on the "Principles of Construction, Test and Use of Filter-type Self-rescuer for Underground Mining" of the West German Mine Rescue Committee. FSR Principle (1982) was formulated.
This standard is applicable to the evaluation of whether the filter-type self-rescuer for carbon monoxide for mines (hereinafter referred to as the self-rescuer) meets the requirements of the product standard, and can be used as a test method for the quality control of the product. 1 Performance test
The performance test of the self-rescuer should be carried out in a test room with a temperature of 20±5℃. 1.1 Carbon monoxide protection performance test
1.1.1 Test principle
Under given test conditions, an artificial lung device is used to pass a pulsating airflow of a mixture of carbon monoxide and air through the self-rescuer, and the concentration of carbon monoxide in the filtered gas is measured to determine whether it exceeds the specified value of the product performance index, so as to evaluate the protective performance of the self-rescuer. 1.1.2 Test conditions
For the test conditions of carbon monoxide protection performance, see Table 1. Table 1 Test conditions for carbon monoxide resistance performance
Respiratory volume (pulsation), L/min
Respiratory frequency, times/min
Respiratory ratio
Test air flow, L/min
Absolute humidity of gas in the test chamber, g/m
Concentration of carbon monoxide in the test gas*, %
Temperature of air flow entering the test chamber
Expiratory temperature, ℃
Distance between the mouthpiece temperature measurement point and the mouthpiece end face, mmPreheating requirements for test pieces
1.1.3 Test apparatus
The test apparatus for carbon monoxide resistance performance is shown in Figure 1. *0.25% and 1.0% are conventional test concentrations; 1.5% is the type test concentration. Approved by the National Bureau of Standards on August 14, 1987
20.7~24.5
0.25, 1.0, 1.5
Adjust according to the absolute humidity conditions of the test chamber
Before the test, place in an environment of 20±5℃ for more than 2h1988-10-01Implementation
Carbon monoxide
GB8160-87
Figure 1 Carbon monoxide protection performance Schematic diagram of the test device 13
1 regulating valve; 2-buffer bottle; 3 flow meter 4-intake air humidity saturator; 5-intake air thermometer; 6-test box; 7-dry and wet bulb thermometer, 8-one-way valve 9-one-way valve for checking reverse leakage of exhalation valve, 10-transfer section; 11-filter; 12-inhalation thermometer, 13-artificial lung 14 exhalation thermometer; 15-exhalation humidity saturator, 16-0~2% carbon monoxide gas Analyzer; 17-purification device, 18-vacuum pump, 19-desiccant; 20-0~1000ppm-carbon monoxide gas analyzer thermometer: 0~100℃;
Carbon monoxide infrared gas analyzer (instruments with equivalent range and accuracy are allowed to be used), range: 0~2%, minimum scale 0.04%; 0~1000ppm, minimum scale 20ppm; c.
The test box is made of plastic, with internal dimensions: 30cm×30cm×26cm (length×width×height); when artificial lung is not included, the total volume of the test device pipeline shall not exceed 2000mL; water-sealed or diaphragm artificial lung (sinusoidal waveform); one-way valve to test reverse leakage of exhalation valve: when a constant airflow of 30L/min passes through in the forward direction, the ventilation resistance of the mica valve shall not be greater than 29Pa (3mmH,0) under the action of spring force and deadweight. 1.1.4 Test preparation
1.1.4.1 According to the requirements of the instruction manual, use standard carbon monoxide gas to calibrate the carbon monoxide infrared gas analyzer. 1.1.4.2 Check the overall air tightness of the test device: maintain the pressure of 1.96kPa (200mmH0) for 1min, and the pressure drop value is not more than 29Pa (3mmH,0), which is qualified. 1.1.4.3 Calibrate the artificial lung breathing rate and breathing volume. 1.1.4.4 Adjust the temperature of the constant temperature water tank.
1.1.4.5 Check the water volume of the moisture saturator.
1.1.4.6 Check the humidity measurement device. See Appendix A for humidity measurement. 1.1.4.7 According to the test state requirements, calibrate the carbon monoxide intake flow rate and sample near the filter inlet of the test box. 1.1.5 Test steps
GB8160--87
1.1.5.1 Quickly install the filter in a fixed position in the test chamber. 1.1.5.2 When the carbon monoxide concentration in the test chamber rises to the value specified by the test conditions, start the artificial lung, the infrared gas analyzer pump and the timer for measuring the carbon monoxide concentration in the exhaust gas simultaneously. 1.1.5.3 Observe and record the initial peak value and the time of occurrence. The maximum value is not allowed to exceed 600ppm. Every 5 minutes, record the following parameters:
Carbon monoxide concentration in the test gas (%);
Carbon monoxide concentration in the exhaust gas (ppm);
The temperature of the airflow entering the test chamber;
Expiratory temperature;
Dry bulb temperature;
Wet bulb temperature;
Inspiratory temperature.
In the formula: M
(CO%)
The test is carried out until the specified protection time. Test result calculation, carbon monoxide permeation accumulation, calculated according to formula (1): M=15×10°
Carbon monoxide permeation accumulation, mL,
Number of records;
(Co%),+
-At the end of each time segment, the measured and recorded carbon monoxide concentration (%); (CO%),--At the end of the protection time, the measured and recorded carbon monoxide concentration (%); 15×10
Conversion factor (recording interval 5minX breathing volume 30L/min). 1.2 Respiratory resistance test
1.2.1 Test principle
When a continuous and stable airflow passes through the filter, due to its internal resistance, a pressure difference is formed at the inlet and outlet of the filter. This value is the resistance of the filter to the specified air flow.
1.2.2 Test conditions
The test air flow is: 30±0.6L/min, 85±1.7L/min; a.
b. The breathing resistance test must be carried out immediately after the carbon monoxide protection performance test. 1.2.3 Test device
1.2.3.1 Exhalation resistance test device, as shown in Figure 2. Compressed air
Figure 2 Exhalation resistance test device
1—Filter, 2—Pressure measuring three-way pipe*, 3—Inclined micromanometer, 4—Air flow meter, 5—Regulating valve 1.2.3.2 Inhalation resistance test device, as shown in Figure 3. Three-way pipe: Inner diameter of airflow pipe. 16±0.5mm, 100mm long, the opening of the pressure transmission hole is not more than 6mm. It can be made of metal, glass or plastic) V
GB8160-87
Figure 3 Inhalation resistance test device
Vacuum pump
1—Filter, 2—Pressure measuring tee, 3—Inclined micromanometer, 4—Air flow meter, 5—Regulating valve Note: ①Inclined micromanometer: range is not less than 1.96kPa (200mmH,0). ②Flowmeter: range 0~100L/min, accuracy 2.0 level. 1.2.4 Test steps
1.2.4.1 Introduce air flow and adjust it to the specified value of 1.2.2a. Measure the resistance R when the filter is not connected. 1.2.4.2 Connect the filter to the test system, readjust the air flow to the specified value of 1.2.2a, and measure the resistance R at this time. 1.2.5 Calculation of test results
The resistance R of the filter to air flow is calculated according to formula (2): RR-R
Wherein: R. Resistance when not connected to the filter, Pa (mmH, O); R
Resistance when connected to the filter, Pa (mmH, O). 1.3 Smoke Filtering Capacity Test
1.3.1 Test conditions
a. Oil mist concentration: 250mg/m
b. Flow rate: 30±0.6L/min.
1.3.2 Others
(2)
The misting device, test device, test steps, test result calculation, etc. of the smoke filter test are all carried out in accordance with GB6166-85 "High-efficiency filter material performance test method permeability and resistance".
1.4 Air tightness test of the whole machine shell
The shell air tightness test adopts the positive pressure method and the negative pressure method. Negative pressure method is used for arbitration test. 1.4.1 Test device
Positive pressure method air tightness test device, using ZJ type self-rescuer air tightness inspection instrument; a.
The airtightness test device of the negative pressure method is shown in Figure 4. 3
Figure 4 The airtightness test device of the whole machine shell
1—Self-rescuer, 2—Vacuum gauge, 3—Exhaust pipeline: 4—Test container 1.4.2 Test steps
1.4.2.1 Positive pressure method
Operate according to the product manual of ZJ type airtightness tester. 1.4.2.2 Negative pressure method
Check the airtightness of the test device;
GB8160-87
Put the self-rescuer into the airtightness test container, and the water level of the container should be 10~15mm higher than the end face of the shell of the self-rescuer; c.
Turn on the vacuum pump switch and pump the airtight test container to a negative pressure of 13.33kPa (100mmHg); d.
Observe whether there are continuous bubbles* coming out of the self-rescuer shell; e.
Turn off the vacuum pump switch;
After the vacuum gauge pointer returns to zero, open the upper cover of the test container and take out the self-rescuer. 1.4.3 Evaluation of test results
a. When the positive pressure method is used for testing, if the water column of the pressure gauge of the airtightness inspection instrument does not reach 13.34kPa or the pressure drops by more than 98Pa (10mmH,0) within 15s after the sealing hook is buckled, it indicates that the airtightness of the self-rescuer shell is unqualified. b. When the negative pressure method is used for testing, if there are continuous bubbles coming out in the water (excluding the bubbles formed in the gap between the external structure of the self-rescuer shell), the airtightness of the self-rescuer shell is unqualified. 1.5 Waterproof and moisture permeability test
1.5.1 Test steps
1.5.1.1 Place the newly produced self-rescuer in a water bath at 70℃ and let it stand for 8 hours, then place it in a water bath at room temperature for 16 hours, and repeat the above process 5 times.
1.5.1.2 Place the tested self-rescuer in a water bath at room temperature and let it stand for more than 50 hours. 1.5.2 Test result evaluation
After the test, the self-rescuer is qualified if the weight gain does not exceed 5g. 1.6 Filter air tightness test
1.6.1 Test conditions
Use dry air through the inlet, and the pressure is 981Pa (100mmH, 0). 1.6.2 Test device
The test device is shown in Figure 5.
Figure 5 Filter air tightness test device
1—Rubber plug, 2—mouthpiece joint, 3—Filter; 4—Sealing cover, 5—Pressure measuring tee; 6—Inclined micromanometer 1.6.3 Test steps
1.6.3.1 Cover the air inlet at the bottom of the filter with a sealing cover, remove the exhalation valve, and seal it with a rubber plug to make it airtight; 1.6.3.2 Check the air tightness of the device itself; 1.6.3.3 Pass dry air into the mouthpiece and pressurize it to the value specified in 1.6.1; 1.6.3.4 Start the timer, observe and record the value of the water column drop within 30 seconds. 1.6.4 Test result evaluation
*Continuous bubbles: refers to the generation of more than two (including two) bubbles leaving the surface of the shell within one minute. 9
GB8160—87
Observe according to 1.6.3.4. When the value is less than 29Pa (3mmH,0), the air tightness of the filter is qualified. 1.7 Exhalation valve air tightness test
1.7.1 Test principle
Install the exhalation valve on the constant volume chamber, evacuate to the specified negative pressure, and then measure the time required for the negative pressure to return to zero due to the leakage of the exhalation valve, so as to evaluate the air tightness of the exhalation valve. 1.7.2 Test conditions
1.7.2.1 The connection between the exhalation valve and the constant volume chamber should be airtight and perpendicular to the horizontal plane, and the valve plate should not be deformed due to force. 1.7.2.2 The air flow rate is 1±0.1L/min, and the negative pressure in the constant volume chamber is 1.47kPa (150mmH0). 1.7.3 Test device
Exhalation valve air tightness tester, as shown in Figure 6. 9
Figure 6 Exhalation valve air tightness tester
1-Water column pressure gauge: 2-Constant volume chamber, 3-Suction control valve, 4-Air flow meter, 5-Suction bottle, 6-Discharge valve; 7-Connecting valve; 8-Overflow funnel, 9-Exhalation valve Note: ①Constant volume chamber: Volume 50±5mL
②Water column pressure gauge: 0~1.96kPa (0~200mmH0), inner diameter 3~4mm③Air flow meter: 0~1500mL/min. 1.7.4 Test steps
1.7.4.1Check the air tightness of the instrument system: Close the through hole of the constant volume chamber and the exhalation valve, evacuate to a negative pressure of 1.47kPa, close the suction control valve, and observe no pressure change after two minutes. 1.7.4.2 Wipe the exhalation valve to be tested with alcohol cotton, dry it in the sun or blow it dry, and then install it on the constant volume chamber. 1.7.4.3 Pump air at a flow rate of 1 ± 0.1L/min until the negative pressure in the constant volume chamber is greater than 1.47kPa (150mmH, 0), and close the control valve.
1.7.4.4 Start the timer from the negative pressure of 1.47kPa (150mmH, 0) and record the time required for the negative pressure to return to zero. 1.7.5 Evaluation of test results
When any of the following situations occurs, the air tightness of the exhalation valve is unqualified: the air flow rate has reached 1 ± 0.1L/min, but the negative pressure does not reach 1.47kPa (150mmH, 0); a.
The time required for the negative pressure in the exhalation valve to return to zero is less than 15s. b.
1.8 The visual field test below the filter
Perform according to GB2891.4-82 "Test method for visual field of filter-type gas masks". 10
1.9 The opening tension test of the sealing belt
GB8160-87
The opening tension should be carried out on a standard tension testing machine, and the angle between the tension direction and the horizontal plane is 80-90°. 1.10 The surface insulation resistance of non-metallic shells shall be measured according to GB1410-78 "Test method for insulation resistance, volume resistance and surface resistivity of solid electrical insulating materials". 2 Mechanical environmental test
2.1 Drop test
Place a pine (or fir) board not more than 50mm thick on the cement floor, and let the self-rescuer fall freely from a height of one meter three times. 2.2 Collision resistance test
2.2.1 Test device
Standard impact test bench or special rolling test box. Rolling test device, as shown in Figure 7. 2
Figure 7 Rolling test device
1 Motor, 2- reducer, 3- wooden box
2.2.2 Test conditions
2.2.2.1 Standard impact test bench
Drop height: 20mm;
Collision frequency: 80~100 times/min;
Impact platform acceleration: 8g;
Magnetic collision times: 50000 times;
During the collision test, the self-rescuer is placed on the metal plate of the vibration table. Not fixed, keep them from touching each other; the self-rescuer takes three positions in turn: lying flat, standing, and inverted, and collides 50000 times in total. 2.2.2.2 Rolling test box
The rolling test box is a wooden box with a thickness of 18mm and an internal size of 30cm×30cm×30cm; 3 self-rescuers are loaded each time,
The test box rotates at 60r/min and the rolling time is 10min. 3 Material tests
3.1 Rubber material tests
3.1.1 The preparation of rubber material specimens, test conditions, and processing of test data shall be carried out in accordance with GB527-83 "General requirements for physical test methods for vulcanized rubber".
3.1.2 The tensile strength test, tensile elongation test, and tensile permanent deformation test of rubber materials shall be carried out in accordance with GB528-82 "Determination of tensile properties of vulcanized rubber".
3.1.3 The hardness test of rubber materials shall be carried out in accordance with GB531-83 "Rubber Shore A hardness test method". 3.1.4 The cold resistance test of rubber materials shall be carried out in accordance with HG4-841-81 "Determination Method of Brittle Temperature of Vulcanized Rubber". The medium temperature in the low temperature tank is 35℃. GB8160-87 3.1.5 The aging resistance test of rubber materials shall be carried out in accordance with GB3512-83 "Rubber Hot Air Aging Test Method". Aging test temperature: 120℃ for breathing valve plate, 100℃ for others; aging time: 24h; aging coefficient: the aging coefficient K expressed by tensile product shall be selected. 3.2 Corrosion resistance test of metal materials The corrosion resistance test of metal materials shall be carried out in accordance with GB2423.17-81 "Basic Environmental Test Procedure for Electrical and Electronic Products Test Ka: Salt Spray Test Method". The test duration is 48h. 4 Test safety rules 4.1 The carbon monoxide resistance test device must be placed in the fume hood of the laboratory. 4.2 The maximum permissible concentration of carbon monoxide in the test site shall not exceed 24ppm. The test site shall be equipped with a carbon monoxide detector and a limit concentration reporting device.
4.3 Carbon monoxide cylinders should be used as much as possible. The cylinders must be isolated from the test room. At the same time, protective screens and safety signs should be added. 4.4 If carbon monoxide needs to be generated in the test room, personal protective equipment must be available. 4.5 During the test, test personnel must strictly abide by safety and technical regulations. 4.6 Test personnel should frequently check the air tightness of the test equipment according to the operating procedures. 4.7 During the test, the exhaust gas discharged from the test box should be equipped with a purification or emptying device. 5 Others
Test instruments and meters must be regularly inspected and calibrated by the national designated metrology department in accordance with relevant regulations before they can be used. 12
GB816087
Appendix A
Humidity measurement
(Supplement)
For humidity measurement, meteorological dry and wet bulb thermometers, meteorological gauze and distilled water are used. A.1
A.2 The insertion depth of the dry and wet bulbs is flush with the end face of the filter air inlet. A.3 Steps for gauze bandaging of wet bulb
A.3.1 Wash the bulb of the wet bulb thermometer with clean distilled water. A.3.2 Soak a 100mm long new gauze in distilled water and wrap it flat and wrinkle-free around the bulb of the wet bulb thermometer. Most of the gauze should be left at the bottom. The overlapping part should not exceed one-fourth of the circumference of the bulb. A.3.3 Tie it twice with yarn. The yarn under the bulb should not be tied too tightly. A.4 Put the gauze vertically into a water cup with a volume of 30-50mL and keep it flat. A.5 The bulb of the wet bulb thermometer is about 30mm away from the surface of the distilled water. The water cup should be kept filled with distilled water at all times. Additional remarks:
This standard was proposed by the Ministry of Labor and Personnel. bzxz.net
This standard was drafted by the Liaoning Provincial Institute of Labor Protection Science and the Fushun Coal Research Institute of the Coal Science Research Institute. The main drafters of this standard are Xiao Yingzhang, Fan Xiying, Wang Shuying, and Shi Shenzhong.
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