CN102230928A - 一种柴油车尾气检测仪 - Google Patents
一种柴油车尾气检测仪 Download PDFInfo
- Publication number
- CN102230928A CN102230928A CN2011101577968A CN201110157796A CN102230928A CN 102230928 A CN102230928 A CN 102230928A CN 2011101577968 A CN2011101577968 A CN 2011101577968A CN 201110157796 A CN201110157796 A CN 201110157796A CN 102230928 A CN102230928 A CN 102230928A
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- Prior art keywords
- tail gas
- gas
- pipeline
- detector
- detecting device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000779 smoke Substances 0.000 claims abstract description 31
- 238000001514 detection method Methods 0.000 claims abstract description 27
- 238000001914 filtration Methods 0.000 claims abstract description 18
- 239000007789 gas Substances 0.000 claims description 68
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitric oxide Chemical compound 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- 238000004458 analytical method Methods 0.000 abstract description 7
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- 238000000605 extraction Methods 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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Abstract
本发明实施例公开了一种柴油车尾气检测仪,包括:尾气吸放管路、过滤装置、抽气装置和气体检测装置,其中:所述过滤装置包括两个通过伸展的滤纸连接并可沿同一方向转动的卷有滤纸的卷纸轮,所述伸展的滤纸由所述卷纸轮带动并穿过所述尾气吸放管路入口处的过滤室;所述尾气吸放管路中部设有抽气装置,出口处设有所述气体检测装置。本发明实施例的检测仪中装设过滤装置与气体检测装置,在经过过滤装置对吸入尾气吸放管路的尾气进行水汽和烟尘过滤后,再对尾气中夹带的其他气体(作为优选方案,对尾气中含有的NO气体和SO2)通过传感器形式进行检测,为尾气检测和分析提供多种参考数据,并使排除水汽影响下的检测结果更为准确。
Description
一种柴油车尾气检测仪
技术领域
[0001] 本发明涉及尾气检测技术领域,更具体地说,涉及一种柴油车尾气检测仪。 背景技术
[0002] 柴油车是采用柴油发动机作为动力的车型,由于柴油发动机采用压燃形式,压缩比高而表现为动力强劲,一般大型车仍使用该种动力提供方式。柴油车燃油燃烧不充分时会产生夹杂炭黑颗粒等污染环境及对人体有害的气体。
[0003] 对上述气体的检测及分析是有针对性防治污染的基础,现有的尾气检测将滤纸上存留的黑烟(炭黑颗粒)通过烟度计测定烟度或采用透光度计检测黑烟不透光度得知烟度。
[0004] 而现有的尾气检测和分析装置至少存在以下缺点,由于柴油燃烧时产生的炭黑颗粒伴有的其他气体未能检测出,且柴油车中排放尾气中所含有的大量水汽将影响检测和分析结果的准确性。
发明内容
[0005] 有鉴于此,本发明提供一种柴油车尾气检测仪,以实现对多种有害气体的检测,并通过过滤水汽提高检测分析的准确性。
[0006] 一种柴油车尾气检测仪,包括:尾气吸放管路、过滤装置、抽气装置和气体检测装置,其中:
[0007] 所述过滤装置包括两个通过伸展的滤纸连接并可沿同一方向转动的卷有滤纸的卷纸轮,所述伸展的滤纸由所述卷纸轮带动并穿过所述尾气吸放管路入口处的过滤室;
[0008] 所述尾气吸放管路中部设有抽气装置,出口处设有所述气体检测装置。
[0009] 优选地,所述气体检测装置包括:依次安装于所述尾气吸放管路出口处的一氧化氮NO传感器和二氧化硫SA传感器。
[0010] 所述NO和SA是影响空气质量和对人体有害的典型气体,在本实施例中检测并配以对应传感器,但并不局限于该列举形式。
[0011] 优选地,所述抽气装置具体为自动抽气泵。
[0012] 所述自动抽气泵也可利用其他抽气装置替代,如手动抽气设备。
[0013] 优选地,所述检测仪还包括:装设于经过滤室后穿出的滤纸上方的烟度探测器。
[0014] 优选地,所述烟度探测器置于烟度检测室内。
[0015] 所述烟度探测器对经过滤后残留于在滤纸上的炭黑颗粒进行烟度检测,从而实现了检测仪对尾气烟度的检测功能。
[0016] 优选地,所述检测仪还包括:装设于所述尾气吸放管路的入口处的不透光度检测器。
[0017] 优选地,所述不透光度检测器包括:发光二极管、不透光度检测单元和尾气排出口,其中:所述发光二极管与所述不透光检测单元间设有管道,所述不透光度检测单元接收发光二极管发出的检测光以检测不透光度,所述尾气排出口设于所述管道两端。
[0018] 将所述不透光检测器整合至所述检测仪中,并可与上述烟度探测器并存于同一设备中,使所述检测仪集成了不透光度检测、烟度检测和气体检测的功能。
[0019] 从上述的技术方案可以看出,本发明实施例中的检测仪中装设过滤装置与气体检测装置,在经过过滤装置对吸入尾气吸放管路的尾气进行水汽和烟尘过滤后,再对尾气中夹带的其他气体(作为优选方案,对尾气中含有的NO气体和SO2)通过传感器形式进行检测,为尾气检测和分析提供多种参考数据,使排除水汽影响下的检测结果更为准确。
附图说明
[0020] 为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
[0021] 图1为本发明实施例公开的一种柴油车尾气检测仪结构示意图;
[0022] 图2为本发明又一实施例公开的一种柴油车尾气检测仪结构示意图;
[0023] 图3为本发明又一实施例公开的一种柴油车尾气检测仪结构示意图;
[0024] 图4为本发明又一实施例公开的一种柴油车尾气检测仪结构示意图;
[0025] 图5为本发明又一实施例公开的一种柴油车尾气检测仪中气体检测装置结构示意图。
具体实施方式
[0026] 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作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。
[0027] 本发明实施例公开了一种柴油车尾气检测仪,以实现对多种有害气体的检测,并通过过滤水汽提高检测分析的准确性。
[0028] 图1示出一种柴油车尾气检测仪,包括:
[0029] 尾气吸放管路11、过滤装置12、抽气装置13和气体检测装置14,其中:
[0030] 所述过滤装置12包括两个通过伸展的滤纸121连接并可沿同一方向转动的卷有滤纸的卷纸轮122,所述伸展的滤纸121由所述卷纸轮122带动并穿过所述尾气吸放管路 11入口处的过滤室15 ;
[0031] 所述尾气吸放管路11中部设有抽气装置13,出口处设有所述气体检测装置14。
[0032] 所述尾气吸放管路11插入柴油车的排气管的取样管,由所述抽气装置13抽取尾气,经所述过滤装置12的过滤后得到除烟尘和水汽的尾气,并在所述气体检测装置中进行其他污染气体的检测及分析。
[0033] 需要说明的是:
[0034] 所述气体检测装置包括:依次安装于所述尾气吸放管路出口处的一氧化氮NO传感器141和二氧化硫SA传感器142,所述NO和SA是影响空气质量和对人体有害的典型气体,在本实施例中检测并配以对应传感器,但并不局限于该列举形式。
[0035] 所述抽气装置具体为自动抽气泵,所述自动抽气泵也可利用其他抽气装置替代, 如手动抽气设备,但并不局限于该列举形式。
[0036] 图2示出了又一种柴油车尾气检测仪,相同之处参见图1图示及其说明,图2中示出了装设于经过滤室15后穿出的滤纸上方的烟度探测器21,所述烟度探测器置于烟度检测室22内。
[0037] 所述尾气吸放管路11插入柴油车的排气管的取样管,由所述抽气装置13抽取尾气,经过滤室15后得到已滤除烟尘和水汽的气体,并在所述气体检测装置14中进行其他污染气体的检测及分析后,在所述尾气吸放管路出口端排出;
[0038] 同时,在已经过滤有烟尘的滤纸行经烟度检测室22处时,由发光二极管发出检测光源并由所述烟度探测器21检测滤纸上的烟度。
[0039] 所述烟度探测器对经过滤后残留于在滤纸上的炭黑颗粒进行烟度检测,从而实现了检测仪对尾气烟度的检测功能。
[0040] 图3示出了又一种柴油车尾气检测仪,相同之处参见图1图示及其说明,图3中示出了装设于所述尾气吸放管路11的入口处的不透光度检测器31。
[0041] 作为优选,如图所示:
[0042] 所述不透光度检测器31包括:发光二极管311、不透光度检测单元312和尾气排出口 313,其中:所述发光二极管311与所述不透光检测单元312间设有管道314,所述不透光度检测单元312接收发光二极管311发出的检测光以检测不透光度,所述尾气排出口 313 设于所述管道314两端。
[0043] 所述尾气首先进入不透光度检测器入口,由发光二极管311发出检测光,所述不透光度检测单元312检测不透光度,尾气通过所述尾气排出口 313排出;
[0044] 同时,由所述抽气装置13抽取少许尾气,经过滤室15后得到已滤除烟尘和水汽的气体,并在所述气体检测装置14中进行其他污染气体(NO和SO2)的检测及分析后,在所述尾气吸放管路出口端排出;
[0045] 图4示出了又一种柴油车尾气检测仪,图中设置了装设于经过滤室15后穿出的滤纸上方的烟度探测器41,以及装设于所述尾气吸放管路11的入口处的不透光度检测器42。
[0046] 需要说明的是,相关工作过程参见图2及图3图示及其对应说明,不再在此赘述。
[0047] 将所述不透光检测器与烟度探测器整合至所述检测仪中,使所述检测仪集成了不透光度检测、烟度检测和气体检测的功能。
[0048] 图5示出一种柴油车尾气检测仪中气体检测装置的实现形式,包括:
[0049] NO传感器51、传感器52,与所述NO传感器51连接的第一信号放大电路511、 与所述传感器52连接的第二信号放大电路521、分别接收来自所述第一信号放大电路 511和所述第二信号放大电路521放大信号(包括所述NO传感器51采集的尾气中的NO气体信号,所述传感器52采集的尾气中的NO气体信号)的A/D转换器53,所述A/D转换器53将放大信号做模/数转换后发送至将微控制器(MCU) 54中处理,得到检测结果。
[0050] 需要特别指出的是,上述实现形式作为优选在实施例中体现,而并不局限于上述列举形式。
[0051] 综上所述:[0052] 本发明的实施例在分析一种装设过滤装置与气体检测装置,在经过过滤装置对吸入尾气吸放管路的尾气进行水汽和烟尘过滤后,再对尾气中夹带的其他气体(作为优选方案,对尾气中含有的NO气体和SO2)通过传感器形式进行检测,为尾气检测和分析提供多种参考数据,使排除水汽影响下的检测结果更为准确。
[0053] 本说明书中各个实施例采用递进的方式描述,每个实施例重点说明的都是与其他实施例的不同之处,各个实施例之间相同相似部分互相参见即可。
[0054] 对所公开的实施例的上述说明,使本领域专业技术人员能够实现或使用本发明。 对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的,本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下,在其它实施例中实现。因此,本发明将不会被限制于本文所示的这些实施例,而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。
Claims (7)
1. 一种柴油车尾气检测仪,其特征在于,包括:尾气吸放管路、过滤装置、抽气装置和气体检测装置,其中:所述过滤装置包括两个通过伸展的滤纸连接并可沿同一方向转动的卷有滤纸的卷纸轮,所述伸展的滤纸由所述卷纸轮带动并穿过所述尾气吸放管路入口处的过滤室; 所述尾气吸放管路中部设有抽气装置,出口处设有所述气体检测装置。
2.根据权利要求1所述的检测仪,其特征在于,包括:所述气体检测装置包括:依次安装于所述尾气吸放管路出口处的一氧化氮NO传感器和二氧化硫传感器。
3.根据权利要求1所述的检测仪,其特征在于,包括:所述抽气装置具体为自动抽气泵。
4.根据权利要求1所述的检测仪,其特征在于,还包括:装设于经过滤室后穿出的滤纸上方的烟度探测器。
5.根据权利要求4所述的检测仪,其特征在于,所述烟度探测器置于烟度检测室内。
6.根据权利要求1所述的检测仪,其特征在于,还包括:装设于所述尾气吸放管路的入口处的不透光度检测器。
7.根据权利要求6所述的检测仪,其特征在于,所述不透光度检测器包括:发光二极管、不透光度检测单元和尾气排出口,其中:所述发光二极管与所述不透光检测单元间设有管道,所述不透光度检测单元接收发光二极管发出的检测光以检测不透光度,所述尾气排出口设于所述管道两端。
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