CN110208321A - A kind of combustible gas explosion limit analysis system - Google Patents
A kind of combustible gas explosion limit analysis system Download PDFInfo
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- 238000004880 explosion Methods 0.000 title claims abstract description 19
- 238000004458 analytical method Methods 0.000 title claims abstract description 18
- 239000007789 gas Substances 0.000 claims abstract description 133
- 238000002485 combustion reaction Methods 0.000 claims abstract description 42
- 239000000567 combustion gas Substances 0.000 claims abstract description 38
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 230000006698 induction Effects 0.000 claims abstract description 9
- 238000000605 extraction Methods 0.000 claims abstract description 7
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000001294 propane Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 19
- 239000001301 oxygen Substances 0.000 abstract description 19
- 229910052760 oxygen Inorganic materials 0.000 abstract description 19
- 239000000446 fuel Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 229910001872 inorganic gas Inorganic materials 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000007084 catalytic combustion reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Natural products C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- -1 methane hydrocarbons Chemical class 0.000 description 1
- 238000001745 non-dispersive infrared spectroscopy Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
本发明公开了一种可燃气体爆炸极限分析系统，包括燃烧气输送系统、燃烧反应系统、样品气输送系统、能检测燃烧反应系统内热量的反应感应系统、量程气输送系统以及压缩气负压吸力抽取系统，所述燃烧气输送系统和样品气输送系统分别与燃烧反应系统连接，且燃烧反应系统内设置有反应感应系统，所述压缩气负压吸力抽取系统连接在燃烧气输送系统和燃烧反应系统之间，且量程气输送系统连接在、样品气输送系统和燃烧反应系统之间，这里通过燃烧，能测出无机可燃气体和有机可燃气体，以及氧气的含量，更全。
The invention discloses a combustible gas explosion limit analysis system, which includes a combustion gas delivery system, a combustion reaction system, a sample gas delivery system, a reaction induction system capable of detecting heat in the combustion reaction system, a range gas delivery system and compressed gas negative pressure suction Extraction system, the combustion gas delivery system and the sample gas delivery system are respectively connected to the combustion reaction system, and a reaction induction system is arranged in the combustion reaction system, and the compressed gas negative pressure suction extraction system is connected to the combustion gas delivery system and the combustion reaction system Between the systems, the span gas delivery system is connected between the sample gas delivery system and the combustion reaction system. Here, through combustion, the content of inorganic combustible gases, organic combustible gases, and oxygen can be measured, which is more comprehensive.
Description
技术领域technical field
本发明涉及可燃气体爆炸极限分析技术领域，具体为一种可燃气体爆炸极限分析系统。The invention relates to the technical field of combustible gas explosion limit analysis, in particular to a combustible gas explosion limit analysis system.
背景技术Background technique
工业生产(医药化工、包装印刷、表面喷涂等)过程中产生大量有机及无机可燃气体，如何确保可燃气体安全输送及利用，防止火灾及爆炸危险事故发生，越来越受到国家及企事业单位关注及重视。随着环保要求及监管力度的提高，对气体浓度的监测的标准及精确度也越来越高。特别是近几年，医药化工、包装印刷、表面喷涂等行业废气排放标准的提出，如何确保浓度保证在可燃极限值以下，确保生产过程中废气安全达标输送及利用越来越得到进一步的重视及关注。A large amount of organic and inorganic combustible gases are produced in the process of industrial production (pharmaceutical and chemical industry, packaging and printing, surface spraying, etc.), how to ensure the safe transportation and utilization of combustible gases, and prevent fire and explosion hazards have attracted more and more attention from the state and enterprises and institutions and attention. With the improvement of environmental protection requirements and supervision, the standard and accuracy of gas concentration monitoring are getting higher and higher. Especially in recent years, with the introduction of waste gas emission standards in pharmaceutical, chemical, packaging and printing, surface spraying and other industries, how to ensure that the concentration is kept below the flammable limit value, and how to ensure the safe delivery and utilization of waste gas in the production process has received more and more attention and attention. focus on.
通常可燃气体需要一定的安全裕度，一般用爆炸下限LEL的百分比表示，例如20％LEL。对于氧气，确保在一个安全范围内，在极限氧浓度下，没有足够的氧气进行爆炸，例如存在3-4％氧气，安全爆炸危险也可避免。同时，国家制定了相关标准规范，进一步确保监测技术健康有序发展，譬如国家标准规范《HJ 1013-2018固定污染源废气非甲烷总烃连续监测系统技术要求及检测方法》规定了固定污染源废气中非甲烷总烃连续监测系统的系列要求。Usually combustible gas requires a certain safety margin, which is generally expressed as a percentage of the lower explosion limit LEL, such as 20% LEL. For oxygen, ensure that it is within a safe range. Under the limit oxygen concentration, there is not enough oxygen to explode, for example, there is 3-4% oxygen, and the danger of safe explosion can also be avoided. At the same time, the state has formulated relevant standards and regulations to further ensure the healthy and orderly development of monitoring technology. A series of requirements for the continuous monitoring system of total methane hydrocarbons.
工业过程可燃气体测量分析的快速LEL监测仪器通常为：催化燃烧，红外吸收分析仪，或者火焰电离检测器FID检测原理，对应用环境工况局限比较明显，其中主要缺陷分析如下：The rapid LEL monitoring instruments for the measurement and analysis of combustible gases in industrial processes are usually: catalytic combustion, infrared absorption analyzer, or flame ionization detector FID detection principle, which has obvious limitations in the application of environmental conditions, and the main defects are analyzed as follows:
催化燃烧虽然是温度方法，但是反应速度慢，容易失效，和催化剂中毒，维护量大、误报和失效风险高等；Although catalytic combustion is a temperature method, it has a slow reaction speed, is prone to failure, and catalyst poisoning, requires a large amount of maintenance, and has a high risk of false positives and failure;
红外吸收分析原理虽然相对稳定，但是NDIR红外存在光谱波长覆盖，和对混合有机物响应不确定性，响应时间，对测量气体温度要求，和二元对称结构气体，无机气体无响应等问题等；Although the principle of infrared absorption analysis is relatively stable, NDIR infrared has spectral wavelength coverage, uncertainty in the response to mixed organic compounds, response time, requirements for the temperature of the measured gas, and non-response to binary symmetric structure gases and inorganic gases, etc.;
FID是分析碳氢化合物最为广泛的方法之一，通过测量火焰中碳氢化合物燃烧形成的离子电流。原理虽然相对稳定快速，然而存在对无机气体无响应等问题。FID is one of the most widely used methods for analyzing hydrocarbons by measuring the ion current formed by the combustion of hydrocarbons in a flame. Although the principle is relatively stable and fast, there are problems such as no response to inorganic gases.
为此，需要一种能够对有机气体和无机气体测量，以及测量氧气含量的系统。For this reason, a system capable of measuring organic and inorganic gases, as well as oxygen content, is required.
发明内容Contents of the invention
本发明的目的在于提供一种可燃气体爆炸极限分析系统，以解决上述背景技术中提出的问题。The purpose of the present invention is to provide a combustible gas explosion limit analysis system to solve the problems raised in the above-mentioned background technology.
为实现上述目的，本发明提供如下技术方案：一种可燃气体爆炸极限分析系统，包括燃烧气输送系统、燃烧反应系统、样品气输送系统、能检测燃烧反应系统内热量的反应感应系统、量程气输送系统以及压缩气负压吸力抽取系统，所述燃烧气输送系统和样品气输送系统分别与燃烧反应系统连接，且燃烧反应系统内设置有反应感应系统，所述压缩气负压吸力抽取系统连接在燃烧气输送系统和燃烧反应系统之间，且量程气输送系统连接在、样品气输送系统和燃烧反应系统之间；In order to achieve the above object, the present invention provides the following technical solutions: a combustible gas explosion limit analysis system, including a combustion gas delivery system, a combustion reaction system, a sample gas delivery system, a reaction induction system capable of detecting heat in the combustion reaction system, and a range gas The delivery system and the compressed gas negative pressure suction system, the combustion gas delivery system and the sample gas delivery system are respectively connected to the combustion reaction system, and the combustion reaction system is equipped with a reaction induction system, and the compressed gas negative pressure suction system is connected to Between the combustion gas delivery system and the combustion reaction system, and the span gas delivery system is connected between the sample gas delivery system and the combustion reaction system;
所述燃烧反应系统包括火焰单元总成，所述火焰单元总成包括容纳燃烧试验的腔室状火焰单元，且火焰单元内设置有燃烧器板，所述燃烧器板上设置有点火用的火花塞；The combustion reaction system includes a flame unit assembly, the flame unit assembly includes a chamber-shaped flame unit for accommodating a combustion test, and a burner plate is arranged inside the flame unit, and a spark plug for ignition is arranged on the burner plate ;
所述燃烧气输送系统包括与火焰单元连接的燃烧气输送管以及连接在燃烧气输送管上的燃烧气压力控制阀和燃烧气流量计；The combustion gas delivery system includes a combustion gas delivery pipe connected to the flame unit, a combustion gas pressure control valve and a combustion gas flowmeter connected to the combustion gas delivery pipe;
所述压缩气负压吸力抽取系统包括负压吸气器、与负压吸气器连接的负压管以及连接在负压管上的负压压力阀和负压流量计，且负压管的末端连接到燃烧气输送管靠近火焰单元的一端上；The compressed gas negative pressure suction extraction system includes a negative pressure aspirator, a negative pressure pipe connected to the negative pressure aspirator, a negative pressure valve and a negative pressure flowmeter connected to the negative pressure pipe, and the negative pressure pipe The end is connected to the end of the combustion gas delivery pipe close to the flame unit;
所述样品气输送系统包括与火焰单元连接的样品气输气管，且样品气输气管与负压管之间设置有样品气流量计；The sample gas delivery system includes a sample gas delivery pipe connected to the flame unit, and a sample gas flowmeter is arranged between the sample gas delivery pipe and the negative pressure pipe;
所述量程气输送系统包括与样品气输气管连接的量程气管以及连接在量程气管上的量程气压力阀和量程气流量计；The span gas delivery system includes a span gas pipe connected to the sample gas delivery pipe, a span gas pressure valve and a span gas flowmeter connected to the span gas pipe;
所述火焰单元的末端连接有排气管，且排气管的末端连接到负压吸气器上。An exhaust pipe is connected to the end of the flame unit, and the end of the exhaust pipe is connected to a negative pressure aspirator.
优选的，所述反应感应系统包括火焰检测器、能将燃烧产生的热量转化为电信号的温度检测器以及与温度检测器连接的模数转换器，所述模数转换器连接有微处理器，且微处理器连接能够显示待测气体含量的组态显示。Preferably, the reaction sensing system includes a flame detector, a temperature detector capable of converting the heat generated by combustion into an electrical signal, and an analog-to-digital converter connected to the temperature detector, and the analog-to-digital converter is connected to a microprocessor , and the microprocessor is connected to a configuration display capable of displaying the gas content to be measured.
优选的，所述排气管与火焰单元之间设置有排气阻火器，且排气管上设置有排气流量计。Preferably, an exhaust flame arrester is arranged between the exhaust pipe and the flame unit, and an exhaust flow meter is arranged on the exhaust pipe.
优选的，还包括设置在样排气管上的压力传感器，且压力传感器电性连接微处理器，所述微处理器连接有报警指示。Preferably, it also includes a pressure sensor arranged on the sample exhaust pipe, and the pressure sensor is electrically connected to a microprocessor, and the microprocessor is connected with an alarm indication.
优选的，所述报警指示为警示灯和蜂鸣器。Preferably, the alarm indication is a warning light and a buzzer.
优选的，所述燃烧气输送管通入的气体为氢气和者丙烷的一种。Preferably, the gas fed into the combustion gas delivery pipe is one of hydrogen and propane.
优选的，所述火焰单元与排气管之间设置有排气阻火器，且火焰单元与样品气输气管之间设置有样品气阻火器。Preferably, an exhaust flame arrester is provided between the flame unit and the exhaust pipe, and a sample gas flame arrester is provided between the flame unit and the sample gas delivery pipe.
优选的，所述排气管和样品气输气管上分别设置有排气过滤器和样品气过滤器。Preferably, an exhaust filter and a sample gas filter are respectively arranged on the exhaust pipe and the sample gas delivery pipe.
优选的，所述排气流量计、量程气流量计、负压流量计和样品气流量计均为孔板流量计。Preferably, the exhaust gas flowmeter, the span gas flowmeter, the negative pressure flowmeter and the sample gas flowmeter are all orifice flowmeters.
与现有技术相比，本发明的有益效果是：Compared with prior art, the beneficial effect of the present invention is:
1、通过样品气输气管，输入样品，进入到火焰单元内，同时，经燃烧气输送管送入燃料，保证样品中的氧气完全燃烧，通过在燃烧器板上没被火花塞点燃，进行燃烧，然后温度检测器检测燃烧时产生的热量，经模数转换器转变成电信号，传给微处理器，然后微处理器传给组态显示，显示氧气含量；1. Input the sample through the sample gas delivery pipe and enter the flame unit. At the same time, feed the fuel through the combustion gas delivery pipe to ensure that the oxygen in the sample is completely combusted, and burn without being ignited by the spark plug on the burner plate. Then the temperature detector detects the heat generated during combustion, which is converted into an electrical signal by the analog-to-digital converter and transmitted to the microprocessor, and then the microprocessor transmits it to the configuration display to display the oxygen content;
2、同样的，测量可燃气体含量时，与测氧气类似，只是，不通入可燃气体燃料，而是经过负压管通入压缩的空气，提供氧气，进行充分燃烧，结合样品气流量计和负压流量计的流量，经微处理器，进行计算，经动态显示，显示可燃气体的含量；2. Similarly, when measuring the combustible gas content, it is similar to measuring oxygen, except that the combustible gas fuel is not fed, but the compressed air is fed through the negative pressure tube to provide oxygen for full combustion, combined with the sample gas flow meter and negative pressure The flow rate of the pressure flowmeter is calculated by the microprocessor and dynamically displayed to show the content of combustible gas;
这里能测出无机可燃气体和有机可燃气体，以及氧气的含量，更全。Here can measure the content of inorganic combustible gas and organic combustible gas, as well as oxygen, more comprehensive.
附图说明Description of drawings
图1为本发明的结构示意图；Fig. 1 is a structural representation of the present invention;
图2为本发明的电路原理示意图。Fig. 2 is a schematic diagram of the circuit principle of the present invention.
图中：1负压吸气器、2排气流量计、3压力传感器、4排气阻火器、5排气阻火器、6燃烧器板、7火焰单元总成、8火焰单元、9样品气阻火器、10燃烧气流量计、11燃烧气压力控制阀、12燃烧气输送管、13量程气流量计、14量程气管、15负压流量计、16负压压力阀、17负压管、18量程气压力阀、19样品气过滤器、20样品气流量计、21样品气输气管、22排气管。In the figure: 1 Negative pressure aspirator, 2 Exhaust flow meter, 3 Pressure sensor, 4 Exhaust flame arrester, 5 Exhaust flame arrester, 6 Burner plate, 7 Flame unit assembly, 8 Flame unit, 9 Sample gas Flame arrester, 10 combustion gas flow meter, 11 combustion gas pressure control valve, 12 combustion gas delivery pipe, 13 range gas flow meter, 14 range gas pipe, 15 negative pressure flow meter, 16 negative pressure pressure valve, 17 negative pressure pipe, 18 Span gas pressure valve, 19 sample gas filter, 20 sample gas flow meter, 21 sample gas delivery pipe, 22 exhaust pipe.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
请参阅图1至2，本发明提供一种技术方案：一种可燃气体爆炸极限分析系统，包括燃烧气输送系统、燃烧反应系统、样品气输送系统、能检测燃烧反应系统内热量的反应感应系统、量程气输送系统以及压缩气负压吸力抽取系统，燃烧气输送系统和样品气输送系统分别与燃烧反应系统连接，且燃烧反应系统内设置有反应感应系统，压缩气负压吸力抽取系统连接在燃烧气输送系统和燃烧反应系统之间，且量程气输送系统连接在、样品气输送系统和燃烧反应系统之间。Please refer to Figures 1 to 2, the present invention provides a technical solution: a combustible gas explosion limit analysis system, including a combustion gas delivery system, a combustion reaction system, a sample gas delivery system, and a reaction induction system capable of detecting heat in the combustion reaction system , the range gas delivery system and the compressed gas negative pressure suction system, the combustion gas delivery system and the sample gas delivery system are respectively connected to the combustion reaction system, and the combustion reaction system is equipped with a reaction induction system, and the compressed gas negative pressure suction system is connected to the between the combustion gas delivery system and the combustion reaction system, and the span gas delivery system is connected between the sample gas delivery system and the combustion reaction system.
燃烧反应系统包括火焰单元总成7，火焰单元总成7包括容纳燃烧试验的腔室状火焰单元8，且火焰单元8内设置有燃烧器板6，燃烧器板6上设置有点火用的火花塞。Combustion reaction system comprises flame unit assembly 7, and flame unit assembly 7 comprises the cavity shape flame unit 8 of accommodating combustion test, and burner plate 6 is arranged in the flame unit 8, and the spark plug for ignition is arranged on the burner plate 6 .
燃烧气输送系统包括与火焰单元8连接的燃烧气输送管12以及连接在燃烧气输送管12上的燃烧气压力控制阀11和燃烧气流量计10。The combustion gas delivery system includes a combustion gas delivery pipe 12 connected to the flame unit 8 , a combustion gas pressure control valve 11 and a combustion gas flow meter 10 connected to the combustion gas delivery pipe 12 .
压缩气负压吸力抽取系统包括负压吸气器1、与负压吸气器1连接的负压管17以及连接在负压管17上的负压压力阀16和负压流量计15，且负压管17的末端连接到燃烧气输送管12靠近火焰单元8的一端上。The compressed gas negative pressure suction extraction system comprises a negative pressure aspirator 1, a negative pressure pipe 17 connected to the negative pressure aspirator 1 and a negative pressure valve 16 and a negative pressure flowmeter 15 connected to the negative pressure pipe 17, and The end of the negative pressure pipe 17 is connected to the end of the combustion gas delivery pipe 12 close to the flame unit 8 .
样品气输送系统包括与火焰单元8连接的样品气输气管21，且样品气输气管21与负压管17之间设置有样品气流量计20。The sample gas delivery system includes a sample gas delivery pipe 21 connected to the flame unit 8 , and a sample gas flowmeter 20 is arranged between the sample gas delivery pipe 21 and the negative pressure pipe 17 .
量程气输送系统包括与样品气输气管21连接的量程气管14以及连接在量程气管14上的量程气压力阀18和量程气流量计13。The span gas delivery system includes a span gas pipe 14 connected to the sample gas delivery pipe 21 , a span gas pressure valve 18 and a span gas flowmeter 13 connected to the span gas pipe 14 .
火焰单元8的末端连接有排气管22，且排气管22的末端连接到负压吸气器1上，排气管22与火焰单元8之间设置有排气阻火器5，且排气管22上设置有排气流量计2，测量排气流量，还包括设置在样排气管22上的压力传感器3，且压力传感器3电性连接微处理器，微处理器连接有报警指示，一旦气体流通不畅，就会报警，提醒工作人员维修，报警指示为警示灯和蜂鸣器，这样既能看到，也能听到，燃烧气输送管12通入的气体为氢气和者丙烷的一种，能与氧气结合反应，进行燃烧，避免火焰流出，保证测量精确，排气管22和样品气输气管21上分别设置有排气过滤器4和样品气过滤器19，避免杂质进入，排气流量计2、量程气流量计13、负压流量计15和样品气流量计20均为孔板流量计，更精确。The end of the flame unit 8 is connected with an exhaust pipe 22, and the end of the exhaust pipe 22 is connected to the negative pressure aspirator 1, an exhaust flame arrester 5 is arranged between the exhaust pipe 22 and the flame unit 8, and the exhaust The pipe 22 is provided with an exhaust flow meter 2 to measure the exhaust flow, and also includes a pressure sensor 3 arranged on the sample exhaust pipe 22, and the pressure sensor 3 is electrically connected to the microprocessor, and the microprocessor is connected to an alarm indication. Once the gas circulation is not smooth, it will alarm to remind the staff to maintain. The alarm indication is a warning light and a buzzer, which can be seen and heard. The gas that the combustion gas delivery pipe 12 feeds is hydrogen and propane. One, which can react with oxygen to burn, avoid flame outflow, and ensure accurate measurement. Exhaust filter 4 and sample gas filter 19 are respectively arranged on exhaust pipe 22 and sample gas delivery pipe 21 to prevent impurities from entering , Exhaust flowmeter 2, span gas flowmeter 13, negative pressure flowmeter 15 and sample gas flowmeter 20 are all orifice flowmeters, more accurate.
反应感应系统包括火焰检测器、能将燃烧产生的热量转化为电信号的温度检测器以及与温度检测器连接的模数转换器，模数转换器连接有微处理器，且微处理器连接能够显示待测气体含量的组态显示，显示可燃气体的含量，通过燃烧产生的热量，以及通入的样品气以及燃料气体的量进行计算，当通入的是燃料气体，是为了消耗样品气气体内的氧气，估算氧气含量，而当通入的是负压管17的氧气时，就是为了将样品中的有机气体和无机可燃气体充分燃烧。The reaction sensing system includes a flame detector, a temperature detector that can convert the heat generated by combustion into an electrical signal, and an analog-to-digital converter connected to the temperature detector. The analog-to-digital converter is connected to a microprocessor, and the microprocessor can be connected to The configuration display that displays the content of the gas to be measured shows the content of the combustible gas, which is calculated by the heat generated by combustion, as well as the amount of sample gas and fuel gas introduced. When the fuel gas is fed, it is to consume the sample gas The oxygen in the sample is used to estimate the oxygen content, and when the oxygen in the negative pressure tube 17 is passed into, it is to fully burn the organic gas and inorganic combustible gas in the sample.
工作原理：通过样品气输气管21，输入样品，进入到火焰单元8内，同时，经燃烧气输送管12送入燃料，保证样品中的氧气完全燃烧，通过在燃烧器板6上没被火花塞点燃，进行燃烧，然后温度检测器检测燃烧时产生的热量，经模数转换器转变成电信号，传给微处理器，然后微处理器传给组态显示，显示氧气含量，同样的，测量可燃气体含量时，与测氧气类似，只是，不通入可燃气体燃料，而是经过负压管17通入压缩的空气，提供氧气，进行充分燃烧，结合样品气流量计22和负压流量计15的流量，经微处理器，进行计算，经动态显示，显示可燃气体的含量。Working principle: Input the sample through the sample gas delivery pipe 21 and enter the flame unit 8. At the same time, feed the fuel through the combustion gas delivery pipe 12 to ensure the complete combustion of the oxygen in the sample. Ignite and burn, and then the temperature detector detects the heat generated during combustion, which is converted into an electrical signal by an analog-to-digital converter and transmitted to the microprocessor, and then the microprocessor transmits it to the configuration display to display the oxygen content. Similarly, measure When combustible gas content, it is similar to measuring oxygen, except that the combustible gas fuel is not fed in, but the compressed air is fed through the negative pressure pipe 17 to provide oxygen for full combustion. The flow rate is calculated by the microprocessor and dynamically displayed to show the content of combustible gas.
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.
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Application publication date: 20190906 |