CN109682418B - Online detection device and detection method for oxygen candle gas - Google Patents
Online detection device and detection method for oxygen candle gas Download PDFInfo
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- CN109682418B CN109682418B CN201811636553.0A CN201811636553A CN109682418B CN 109682418 B CN109682418 B CN 109682418B CN 201811636553 A CN201811636553 A CN 201811636553A CN 109682418 B CN109682418 B CN 109682418B
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- 239000007789 gas Substances 0.000 title claims abstract description 234
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 159
- 239000001301 oxygen Substances 0.000 title claims abstract description 159
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 159
- 238000001514 detection method Methods 0.000 title claims abstract description 40
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 64
- 229910002091 carbon monoxide Inorganic materials 0.000 claims abstract description 64
- 238000004458 analytical method Methods 0.000 claims abstract description 61
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000000460 chlorine Substances 0.000 claims abstract description 41
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 38
- 238000012545 processing Methods 0.000 claims abstract description 27
- 238000012360 testing method Methods 0.000 claims abstract description 22
- 239000003517 fume Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 4
- NHYCGSASNAIGLD-UHFFFAOYSA-N chlorine monoxide Inorganic materials Cl[O] NHYCGSASNAIGLD-UHFFFAOYSA-N 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 238000004164 analytical calibration Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical group CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 description 4
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 238000004566 IR spectroscopy Methods 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- QKSIFUGZHOUETI-UHFFFAOYSA-N copper;azane Chemical compound N.N.N.N.[Cu+2] QKSIFUGZHOUETI-UHFFFAOYSA-N 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000007954 hypoxia Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000005298 paramagnetic effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to an oxygen candle gas on-line detection device which comprises a gas flow test unit, a carbon monoxide/oxygen content analysis unit, a chlorine content analysis unit, a gas pipeline unit and a PLC control and data processing unit, wherein the gas flow test unit is connected with the carbon monoxide/oxygen content analysis unit; the gas flow testing unit comprises an electronic scale and an oxygen candle tray, wherein the oxygen candle tray is arranged on the electronic scale and is used for placing an oxygen candle to be tested; the gas pipeline unit comprises a gas outlet gas collecting pipe seat and a fume hood, the fume hood is covered outside the gas flow testing unit, and the gas outlet gas collecting pipe seat is arranged at the gas outlet of the oxygen candle; the carbon monoxide/oxygen content analysis unit is used for testing the carbon monoxide content and the oxygen purity in the gas; the chlorine content analysis unit is used for testing the content of chlorine in the gas; and the PLC control and data processing unit is used for controlling the oxygen candle reaction and outputting and/or displaying the detection result. The detection device has high automation degree, and all experimental data such as oxygen purity, gas flow, carbon monoxide and chlorine content and the like can be detected in real time on line.
Description
Technical Field
The invention belongs to the technical field of oxygen candles, and particularly relates to an oxygen candle gas on-line detection device and an oxygen candle gas on-line detection method.
Background
An oxygen candle is a novel oxygen supply device for generating oxygen by chemical reaction, and the principle is that chlorate is subjected to chemical reaction to generate oxygen. The most commonly used chlorate is sodium chlorate, the decomposition of which proceeds according to the following equation;
2NaClO 3 →2NaCl+3O 2 ↑
the decomposition reaction of sodium chlorate is exothermic, but the heat evolved does not sustain itself for further decomposition, it is necessary to add metal powder fuel such as iron powder, magnesium powder, titanium powder, etc. to provide heat and maintain continuous oxygen-generating chemical reaction. Sodium chlorate can produce side reaction at high temperature, so that the gas released by combustion and decomposition of sodium chlorate is mainly high-purity oxygen, and is mixed with trace water vapor, carbon monoxide, chlorine and other harmful impurity gases.
At present, the oxygen candle is mainly used as an emergency lifesaving oxygen source in the fields of spaceflight, submarines, plateau hypoxia, mine refuge, medical rescue and the like. Because the gas released by burning the oxygen candles is directly supplied to the user for breathing, the oxygen candles must have stable oxygen supply speed, the oxygen supply time and the oxygen supply flow required by emergency lifesaving are ensured, the oxygen purity is high, and the content of harmful impurity gas in the gas must be within a specified value, thereby ensuring the safety of personnel. Therefore, the analysis and detection of the oxygen candle gas flow and the content of each component of the gas are particularly important.
In the prior art and related literature reports, detection means combining online analysis and laboratory offline analysis are mostly adopted to analyze the flow rate of oxygen candle gas and the content of each component of the gas. The flow rate of the oxygen candle gas is generally detected on line by a flowmeter or an electronic scale weight loss method, the contents of all components of the oxygen candle gas are collected by an air bag and then are analyzed in a laboratory, for example, the oxygen content is tested by a copper ammonia absorption method or a gas chromatography method, the carbon monoxide is tested by the gas chromatography method, and the chlorine is tested by a spectrophotometry method. The laboratory analysis mode of taking gas through the air bag is not always continuous sampling, but sampling is started at a certain moment, laboratory analysis is carried out after the gas is collected for a certain time, experimental data cannot completely reflect the content change of each component of the gas in the whole experimental process, and an analysis result is greatly influenced by the sampling moment. In addition, the detection means of combining online and offline laboratory analysis is adopted, so that the method is complex in operation, high in artificial workload, high in analysis cost, relatively long in analysis period and inconvenient to uniformly store and view experimental data, and the informatization management difficulty is increased.
Disclosure of Invention
The invention aims to provide an on-line detection device and a detection method for oxygen candle gas, which can detect the flow rate of the oxygen candle gas and the content of each component on line, do not need to take gas for laboratory off-line analysis, and can effectively simplify the detection process. Through the on-line detection device, all experimental data are acquired in real time, and automation and informatization of oxygen candle inspection are realized, so that the monitoring capability of the inspection process and the traceability of the inspection result are improved.
The invention adopts the following technical scheme:
an oxygen candle gas on-line detection device comprises a gas flow test unit, a carbon monoxide/oxygen content analysis unit, a chlorine content analysis unit, a gas pipeline unit and a PLC control and data processing unit;
the gas flow testing unit comprises an electronic scale and an oxygen candle tray, the oxygen candle tray is arranged on the electronic scale and is used for placing an oxygen candle to be tested;
the gas pipeline unit comprises a gas outlet gas collecting pipe seat and a fume hood, the fume hood is covered outside the gas flow testing unit, and the gas outlet gas collecting pipe seat is arranged at the position of the oxygen candle air outlet;
the carbon monoxide/oxygen content analysis unit is connected with the gas outlet gas collecting tube seat through a pipeline penetrating through the fume hood, for testing the carbon monoxide content and the oxygen purity in the gas;
the chlorine content analysis unit is connected with the gas outlet gas collecting tube seat through a pipeline penetrating through the fume hood and is used for testing the content of chlorine in gas;
the PLC control and data processing unit is used for controlling oxygen candle reaction, receiving signals of gas weight, chlorine content, carbon monoxide content and oxygen purity, converting the gas weight into gas volume flow through theoretical calculation, and outputting and/or displaying detection results.
Further, the carbon monoxide/oxygen content analysis unit comprises a sample gas inlet pipeline, a gas pretreatment system, a flow regulation and gas circuit control system, a carbon monoxide/oxygen online analyzer and a standard gas calibration system; the sample gas inlet pipeline is connected to a carbon monoxide/oxygen online analyzer sequentially through a gas pretreatment system, a flow regulation and gas circuit control system, the gas pretreatment system is used for filtering and separating water from vapor of the entering gas, the flow regulation and gas circuit control system is used for exhausting the detected gas and controlling the flow rate and flow rate of the detected gas, the carbon monoxide/oxygen online analyzer is used for analyzing the carbon monoxide content and the oxygen purity in the gas, and the standard gas calibration system is used for calibrating the carbon monoxide/oxygen online analyzer.
Furthermore, the chlorine content analysis unit is a pumping type chlorine on-line analyzer with temperature compensation, filtering, zero point calibration and automatic calibration functions.
Further, two air outlets are arranged on the air outlet air collecting pipe seat on the air pipeline unit, one air outlet is connected with the sample air inlet pipeline on the carbon monoxide/oxygen content analysis unit through a pipeline, and the other air outlet is connected with the chlorine content analysis unit through a pipeline.
Further, the ignition unit of the oxygen candle of the invention is mounted on the inside wall of the fume hood.
Further, the height of the gas outlet gas collecting tube seat is not lower than 20cm.
An on-line detection method of oxygen candle gas, the method comprises the following steps:
step one, calibrating: before the oxygen candle gas is detected, a relevant valve component in a standard gas calibration system of the carbon monoxide/oxygen content analysis unit is opened, on-line carbon monoxide/oxygen calibrating an analyzer;
step two, switching the gas circuit: closing a standard gas calibration system, and switching a gas circuit of the carbon monoxide/oxygen content analysis unit to a sample gas inlet pipeline;
step three, starting an oxygen candle, starting timing and weighing: the PLC control and data processing unit sends out a voltage signal, the oxygen candle ignition unit is started, an oxygen candle is ignited to generate gas, and when the oxygen candle is ignited, the timing is started, and the electronic scale starts weighing;
detecting the purity of oxygen, the content of carbon monoxide and chlorine: the sample gas enters a carbon monoxide/oxygen content analysis unit to detect the oxygen purity and the carbon monoxide content, and enters a chlorine content analysis unit to detect the chlorine content;
step five, data output and processing: the detection results of the gas weight, the chlorine and carbon monoxide content and the oxygen purity are input into a PLC control and data processing unit, the gas weight is converted into the gas volume flow through theoretical calculation, and the PLC control and data processing unit outputs the processed detection results.
Advantageous effects
The detection device has high automation degree, can detect all experimental data such as oxygen purity, gas flow, carbon monoxide and chlorine content on line in real time, greatly reduces artificial workload, synchronously stores all experimental data, and is convenient for informationized management. In addition, the instrument for detecting the gas has high test precision, and can accurately measure the gas flow and the content of each component of the gas.
Drawings
FIG. 1 is a schematic diagram of an on-line oxygen candle gas detection device according to the present invention.
Wherein 1 is an oxygen candle unit, 2 is an ignition unit, 3 is a gas flow test unit, 3-1 is an electronic scale, 3-2 is an oxygen candle tray, 4 is a carbon monoxide/oxygen content analysis unit, 4-1 is a sample gas inlet pipeline, 4-2 is a gas pretreatment system, 4-3 is a flow regulation and gas path control system, 4-4 is a carbon monoxide/oxygen on-line analyzer, 4-5 is a standard gas calibration system, 5 is a chlorine content analysis unit, 6 is a gas pipeline unit, 6-1 is a fume hood, 6-2 is a first gas taking pipeline, 6-3 is a second gas taking pipeline, 6-4 is a gas outlet gas collecting pipe seat, and 7 is a PLC control and data processing unit.
Fig. 2 is a schematic view of the structure of the gas outlet header base.
See FIG. 2, wherein 6-4-1 is hole number one and 6-4-2 is hole number two.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, the oxygen candle gas on-line detection device in the embodiment of the invention comprises a gas flow test unit 3, a carbon monoxide/oxygen content analysis unit 4, a chlorine content analysis unit 5, a gas pipeline unit 6 and a PLC control and data processing unit 7, wherein the oxygen candle to be detected is an oxygen candle with an ignition lead, the ignition unit is a 12V power supply, and the ignition lead of the oxygen candle is connected with the 12V power supply; wherein the method comprises the steps of
The gas flow testing unit 3 comprises an electronic scale 3-1 and an oxygen candle tray 3-2, wherein the oxygen candle tray 3-2 is arranged on the electronic scale 3-1, and the oxygen candle tray 3-2 is used for placing oxygen candles;
the carbon monoxide/oxygen content analysis unit 4 is complete equipment with the functions of instrument calibration, sample gas filtration, water vapor separation, gas test and the like, and comprises a sample gas inlet pipeline 4-1, a gas pretreatment system 4-2, a flow regulation and gas circuit control system 4-3, a carbon monoxide/oxygen online analyzer 4-4 and a standard gas calibration system 4-5; the sample gas inlet pipeline 4-1 is connected to the carbon monoxide/oxygen online analyzer 4-4 sequentially through the gas pretreatment system 4-2 and the flow regulation and gas circuit control system 4-3, an exhaust pipeline is arranged in the carbon monoxide/oxygen online analyzer 4-4, and the standard gas calibration system 4-5 is connected to a pipeline between the flow regulation and gas circuit control system 4-3 and the carbon monoxide/oxygen online analyzer 4-4; the gas pretreatment system 4-2 is used for filtering and separating water from gas entering the gas pretreatment system, the flow regulation and pipeline control system 4-3 is used for exhausting the detected gas and controlling parameters such as flow rate and flow rate of the detected gas, the gas pretreatment system mainly comprises a suction pump, a rotor flow regulation valve, a three-way valve and the like, the suction pump provides power for a whole sample gas inlet pipeline, and the carbon monoxide/oxygen online analyzer is used for analyzing carbon monoxide content and oxygen purity in the gas.
The chlorine content analysis unit 5 is a pumping type online chlorine analyzer with temperature compensation, zero calibration and automatic calibration functions;
the gas pipeline unit 6 comprises a gas outlet gas collecting pipe seat 6-4, a first gas taking pipeline 6-2, a second gas taking pipeline 6-3, a fume hood 6-1 and related valve pipe fittings. The gas outlet gas collecting tube seat 6-4 is covered at the gas outlet of the oxygen candle, the gas inlet of the first gas collecting tube 6-2 is inserted into the first hole 6-4-1 of the gas outlet gas collecting tube seat, the gas inlet of the second gas collecting tube 6-3 is inserted into the second hole 6-4-2 of the gas outlet gas collecting tube seat, the first gas collecting tube 6-2 penetrates through the side surface of the fume hood 6-1 to be connected with the sample gas inlet tube 4-1 of the carbon monoxide/oxygen content analysis unit 4, and the gas outlet of the second gas collecting tube 6-3 penetrates through the side surface of the fume hood 6-1 to be connected with the chlorine content analysis unit 5. The oxygen candle unit 1 and the gas flow test unit 3 are placed in the fume hood 6-1, and the ignition unit 2 is arranged on the inner side wall of the fume hood 6-1.
The PLC control and data processing unit 7 comprises a PLC control system and an industrial personal computer with a man-machine interface, and has the functions of power supply, control, signal acquisition, analysis, output, display and the like. The method mainly comprises the steps of automatic starting of oxygen candle ignition, experimental ending control, ignition state display, and processing and outputting of detection results; the method comprises the following steps: the PLC control and data processing unit 7 is electrically connected with the 12V power supply 2, the electronic scale 3-1, the chlorine content analysis unit 5 and the carbon monoxide/oxygen content analysis unit 4, the PLC control and data processing unit 7 controls the 12V power supply to be turned on, signals of gas weight, chlorine content, carbon monoxide content, oxygen purity and the like are received, the gas weight is converted into gas volume flow through theoretical calculation, and the PLC control and data processing unit outputs a processed detection result.
In the embodiment of the invention, the height of the gas outlet gas collecting tube seat 6-4 is preferably not lower than 20cm.
As shown in FIG. 1, the method for detecting oxygen candle gas on line comprises the following specific steps:
in order to ensure the detection precision of the gas analyzer, before the oxygen candle 1 is detected, a standard gas calibration system 4-5 of the carbon monoxide/oxygen content analysis unit 4 is opened to calibrate the carbon monoxide/oxygen analyzer 4-4. After the calibration is finished, the gas circuit is switched back to the sample gas inlet pipeline 4-1.
Placing an oxygen candle tray 3-2 on an electronic scale 3-1, placing the oxygen candle 1 on the oxygen candle tray 3-2, covering a gas outlet gas collecting tube seat 6-4 with the height of 20cm on an oxygen candle gas outlet, respectively inserting a first gas taking tube 6-2 and a second gas taking tube 6-3 below a first hole 6-4-1 and a second hole 6-4-2 of the gas outlet gas collecting tube seat 6-4, inserting an oxygen candle lead head into a 12V power supply 2, and pulling down a glass door of a fume hood 6-1. Clicking a zero clearing button on a man-machine interface in the PLC control and data processing unit 7, and returning the quality to zero. Clicking an ignition button on a human-computer interface, starting a 12V power supply 2, igniting an oxygen candle 1, discharging gas, starting timing an experiment, and starting weighing by an electronic scale 3-1. Most of the gas is discharged outside through an exhaust pipeline of the fume hood 6-1, and the detected sample gas respectively reaches the carbon monoxide/oxygen content analysis unit 4 and the chlorine content analysis unit 5 through a first gas taking pipeline 6-2 and a second gas taking pipeline 6-3 under the action of an air suction pump. In the carbon monoxide/oxygen content analysis unit 4, a suction pump provides power for the whole sample gas inlet pipeline, a flow regulating valve is regulated, and the flow rate of the sample gas is controlled to be 0.5-1L/min. In the chlorine content analysis element 5, the pumping speed of the pump is 1 to 3L/min. The sample gas is filtered and water-vapor separated by a gas pretreatment system 4-2 in a carbon monoxide/oxygen content analysis unit 4, and then enters a carbon monoxide/oxygen online analyzer 4-4 for detection. Because chlorine is easily dissolved in water, the sample gas enters the chlorine analysis unit 5 and is directly detected after being filtered. The carbon monoxide/oxygen online analyzer 4-4 measures carbon monoxide based on the principle of infrared spectroscopy, the measuring range is 0-50ppm, the measuring range is optional, and the linear error is less than 0.5% of the full range value. The oxygen concentration is measured based on the paramagnetic principle of oxygen, the measuring range is 0-100%, the measuring range is optional, and the linear error is less than 0.1% of the measuring range. The chlorine analysis is based on electrochemical principle to measure, the measuring range is 0-10ppm, the precision is 0.01ppm, the measurement of the concentration of various components is not interfered with each other, and the accurate gas concentration measurement value can be obtained. And the tail gas is discharged from the sample gas measured by the analyzer through an exhaust pipeline.
The PLC control and data processing unit 7 converts the received oxygen candle gas weight data into oxygen candle gas volume flow data through theoretical calculation, when the gas volume flow is continuously lower than 10L/min for 3 minutes, the PLC control and data processing unit 7 controls the experiment to be automatically ended, and the experiment time is recorded, namely the oxygen supply time. The human-computer interface can display real-time data, and also can display real-time curves of the oxygen candle gas volume flow and the content of each component along with the time change.
The device is suitable for online detection of the gas flow and the gas component content of the oxygen candles, and various improvements of the technical scheme of the scheme, such as adding a flow test unit, an ignition unit, a carbon monoxide/oxygen content analysis unit and a chlorine content analysis unit, are made by a person of ordinary skill in the art on the premise of not deviating from the design spirit of the invention, so that pipelines are improved and PLC control is added, and the simultaneous online detection of the gas flow and the gas component content of two or even more oxygen candles is realized, and all the improvements fall into the protection scope determined by the claims of the invention.
Claims (7)
1. The utility model provides an oxygen candle gas on-line measuring device, its characterized in that includes oxygen candle unit (1), ignition unit (2), gas flow test unit (3), carbon monoxide/oxygen content analysis unit (4), chlorine content analysis unit (5), gas pipeline unit (6) and PLC control and data processing unit (7), its characterized in that:
the oxygen candle unit (1) is one an oxygen candle with an ignition lead;
the ignition unit (2) is a 12V power supply, and an ignition lead of the oxygen candle is connected with the 12V power supply;
the gas flow testing unit (3) comprises an electronic scale (3-1) and an oxygen candle tray (3-2), wherein the oxygen candle tray (3-2) is arranged on the electronic scale (3-1), and the oxygen candle is arranged on the oxygen candle tray (3-2);
the carbon monoxide/oxygen content analysis unit (4) is complete equipment with instrument calibration, sample gas filtration, water vapor separation and gas test functions, and comprises an air inlet pipeline (4-1), a gas pretreatment system (4-2), a flow regulation and gas circuit control system (4-3), a carbon monoxide/oxygen online analyzer (4-4) and a standard gas calibration system (4-5);
the chlorine content analysis unit (5) is a pumping type online chlorine analyzer with temperature compensation, zero calibration and automatic calibration functions;
the gas pipeline unit (6) comprises a gas outlet gas collecting pipe seat (6-4), a first gas taking pipeline (6-2), a second gas taking pipeline (6-3), a fume hood (6-1) and related valve pipe fittings; the gas outlet gas collecting tube seat (6-4) is covered at the gas outlet of the oxygen candle, the gas inlet of the first gas taking tube (6-2) is inserted into the first hole (6-4-1) of the gas outlet gas collecting tube seat, and the gas inlet of the second gas taking tube (6-3) is inserted into the second hole (6-4-2) of the gas outlet gas collecting tube seat; the air outlets of the first air taking pipeline (6-2) and the second air taking pipeline (6-3) respectively penetrate through the side surface of the fume hood (6-1);
the PLC control and data processing unit (7) comprises a PLC control system and an industrial personal computer with a man-machine interface.
2. A kind of as claimed in claim 1 an on-line detection device for oxygen candle gas, the method is characterized in that: the oxygen candle unit (1) and the gas flow testing unit (3) are arranged in the fume hood (6-1), and the ignition unit (2) is arranged on the inner side wall of the fume hood (6-1).
3. The oxygen candle gas on-line detection device of claim 1, wherein: the air inlet pipeline (4-1) of the carbon monoxide/oxygen content analysis unit (4) sequentially passes through the gas pretreatment system (4-2), the flow regulation and air path control system (4-3) and is connected to the carbon monoxide/oxygen on-line analyzer (4-4); an exhaust pipeline is arranged in the carbon monoxide/oxygen online analyzer (4-4).
4. The oxygen candle gas on-line detection device of claim 1, wherein: the gas outlet of the first gas taking pipeline (6-2) is connected with the gas inlet pipeline (4-1) of the carbon monoxide/oxygen content analysis unit (4), and the gas outlet of the second gas taking pipeline (6-3) is connected with the chlorine content analysis unit (5).
5. The oxygen candle gas on-line detection device of claim 1, wherein: the height of the gas outlet gas collecting tube seat (6-4) is not lower than 20cm.
6. The oxygen candle gas on-line detection device of claim 1, wherein: the 12V power supply, the electronic scale (3-1), the chlorine content analysis unit (5) and the carbon monoxide/oxygen content analysis unit (4) are electrically connected with the PLC control and data processing unit (7); the PLC control and data processing unit (7) controls the starting of a 12V power supply; the gas weight, chlorine and carbon monoxide content, and oxygen purity signals are transmitted to a PLC control and data processing unit.
7. An oxygen candle gas on-line detection method is characterized in that: the on-line detection method of the oxygen candle gas adopts the on-line detection device of the oxygen candle gas in claim 1, and comprises the following steps:
step one, calibrating: before the oxygen candle gas is detected, a standard gas calibration system in the carbon monoxide/oxygen content analysis unit is opened, calibrating a carbon monoxide/oxygen online analyzer;
step two, a step two of the method, and (3) switching an air path: closing a standard gas calibration system in the carbon monoxide/oxygen content analysis unit, and switching a gas circuit to a sample gas inlet pipeline;
step three, starting an oxygen candle, starting timing and weighing: the PLC control and data processing unit sends out a voltage signal, a 12V power supply is started, and an oxygen candle is ignited to generate gas; when the oxygen candle is ignited, timing is started, and the electronic scale starts weighing;
detecting the purity of oxygen, the content of carbon monoxide and chlorine: under the action of an air suction pump, the sample gas enters a carbon monoxide/oxygen content analysis unit through a first air taking pipeline to detect the purity of oxygen and the content of carbon monoxide, and enters a chlorine content analysis unit through a second air taking pipeline to detect the content of chlorine;
step five, data output and processing: the detection results of the gas weight, the chlorine and carbon monoxide content and the oxygen purity are input into a PLC control and data processing unit, the gas weight is converted into the gas volume flow through theoretical calculation, and the PLC control and data processing unit outputs the processed detection results.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1401056A (en) * | 1971-08-17 | 1975-07-16 | Energetics Science | Gas detecting and measuring unit |
| CN103206241A (en) * | 2012-12-24 | 2013-07-17 | 湖北航天化学技术研究所 | Durable mining lifesaving cabin automatic oxygen supplying system capable of supplying oxygen through safety oxygen source |
| CN103362544A (en) * | 2013-07-15 | 2013-10-23 | 北京科技大学 | Oxygen candle oxygen supply system in emergency disaster prevention space |
| CN209342148U (en) * | 2018-12-29 | 2019-09-03 | 中国船舶重工集团公司第七一八研究所 | A kind of oxygen candle gas on-line measuring device |
-
2018
- 2018-12-29 CN CN201811636553.0A patent/CN109682418B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1401056A (en) * | 1971-08-17 | 1975-07-16 | Energetics Science | Gas detecting and measuring unit |
| CN103206241A (en) * | 2012-12-24 | 2013-07-17 | 湖北航天化学技术研究所 | Durable mining lifesaving cabin automatic oxygen supplying system capable of supplying oxygen through safety oxygen source |
| CN103362544A (en) * | 2013-07-15 | 2013-10-23 | 北京科技大学 | Oxygen candle oxygen supply system in emergency disaster prevention space |
| CN209342148U (en) * | 2018-12-29 | 2019-09-03 | 中国船舶重工集团公司第七一八研究所 | A kind of oxygen candle gas on-line measuring device |
Non-Patent Citations (2)
| Title |
|---|
| 氧烛的研究现状与发展;范敏;卜建杰;郑邯勇;;舰船科学技术(02);第16-20页 * |
| 空间站氯酸盐氧烛备份氧试验研究;周兴明;胡晓;毛胜华;张毅;毛龙;;航天医学与医学工程(05);第394-397页 * |
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