CN102803928A - 可加热的流通测量皿 - Google Patents
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Abstract
一种用于一气体分析仪的可加热流通测量皿，包括：一由耐腐材料(例如不锈钢)构成的内管(1)，所述内管的两端分别被一末端件(2，3)和一固定在所述末端件中的可透辐射的窗口(4，5)封闭；一用于加热所述末端件(2，3)的加热装置(6，7)；一由导热性能良好的材料(例如铝)构成的外管(8)，所述外管在形成一较窄间隙(9)的情况下同轴包围所述内管(1)；及一包围所述外管(8)的隔热装置(10)。
Description
技术领域
本发明涉及一种用于气体分析仪的可加热流通测量皿。
背景技术
EP 1 767 922 A2揭示一种设有管子的流通测量皿，管子的两端分别被一个可加热末端件和固定在该末端件中的可透辐射的窗口封闭。测量气体从一个管端送入，从另一个管端排出，或者优选从管子中间送入，从两个管端排出。
US 4 205 550 A揭示一种设有钢制或铝制内管的流通测量皿，管子的两端分别被一个设有散热片的末端件和固定在该末端件中的可透辐射的窗口封闭。该内管被一钢制或铝制外管同轴包围，并且二者之间存在一间隙。两个管子均包含多个沿直径方向分别相对布置的开口，其中，根据外管所处的相对于内管的旋转位置，待分析燃烧气体能够通过该测量皿或者无法通过该测量皿。
JP 59-035 131 A揭示一种由玻璃构成的流通测量皿，该测量皿在嵌入一种能吸收不同热膨胀的导热材料如银焊料的情况下，安装在可加热的金属块中。
JP 57-163 845 A同样提出一种安装在可加热金属块中的流通测量皿。
与原位气体分析不同，采样气体分析是从过程中提取待分析气体，使其通过流通测量皿，并且在该测量皿中对这部分气体进行光谱分析(NDIR、激光等等)。为了防止水在提取管和测量皿中冷凝，或者为了避免发生非期望的反应，经常需要在较高温度下进行测量。将测量皿加热后，可以在高达200℃的温度下进行测量。由于测量结果与测量气体温度有关，测量气体温度在测量皿所形成的整条测量路径上，在精确到数开尔文的范围内不得受位置影响。
为了达到必要的耐热性和耐腐蚀性，特别是在测量气体为腐蚀性气体的情况下，测量皿内壁的材料通常会采用不锈钢。但不锈钢的导热能力在金属中不算好，因而在加热测量皿，特别是长度达到一米量级的测量皿时，会产生不想要的温度梯度。以往是通过例如在测量皿外侧均匀设置加热带以及视情况将加热装置划分成多个单独受控的加热回路来防止温度梯度的形成。另一种已知解决方案是将测量皿布置在能实现均匀加热的循环空气炉中。
但上述这些解决方案对设备或仪器投入的要求相当高。
发明内容
本发明提供一种能减少这方面投入的气体分析仪用可加热流通测量皿，其包括：一由耐腐材料构成的内管，所述内管的两端分别被一末端件和一固定在该末端件中的可透辐射的窗口封闭；一用于加热所述末端件的电加热装置；一由导热性能良好的材料构成的外管，所述外管在形成一较窄间隙的情况下同轴包围所述内管；及一包围所述外管的隔热装置，其中，所述加热装置整合在所述末端件中，或者从外部紧贴所述末端件安装。
所述内管构成所述测量皿的耐腐内壁，由一种能抵御测量气体的腐蚀作用的材料构成，例如不锈钢、钽、聚四氟乙烯(PTFE)或碳纤维复合材料(Carbon)。这些材料的导热能力相对较差。所述由导热性能良好的材料(如铝或铜)构成的外管与所述隔热装置一起确保轴向上实现均匀的热分布，从而防止在内管的长度范围内形成明显的温度梯度。因此，这种管状测量皿只需两端加热，也就是说，只需要使用两个加热装置。这些加热装置整合在将内管两端封闭且设有窗口的末端件中，或者从外部紧贴这些末端件安装。送入和排出测量气体所需的气体管接头可在内管的末端区域内直接布置在内管上，或者布置在末端件中，其中，测量气体也可以经管子中间的气体管接头送入，从两个末端区域排出。
附图说明
图1为本发明流通测量皿的第一实施例；以及
图2为本发明流通测量皿的另一实施例。
具体实施方式
下文将参照附图对本发明作进一步说明。
图1为用于气体分析仪(此处未图示)的流通测量皿。该测量皿由内侧不锈钢管1构成，这个管子的末端被两个由不锈钢或另一种耐腐材料构成的末端件2、3封闭。两个末端件2、3都包含可透辐射的窗口4和电加热装置6、7。加热装置6、7也可以从外部安装在相应的末端件2、3上。不锈钢管1被外侧的铝管或铜管8同轴包围，这个管子如附图左部以末端件2为例所示固定在末端件2、3之间，或者如附图右部以末端件3为例所示，紧贴末端件2、3布置。为了在获得较长测量距离的同时使测量皿保持较低流量，不锈钢管1的长度直径比大于10(例如，直径为4cm，长度为100cm)。考虑到制造公差和管子1与8的热膨胀差异，两个管子1和8之间设有间隙9。间隙9所具有的尺寸使得该间隙中所存在的气体(例如空气)或其他材料(例如导热膏)能够通过其导热性能，使导热能力较差的不锈钢管1有效地与导热能力较好的铝管或铜管8热耦合。铝管或铜管8上设有隔热装置10，该隔热装置所采用的设计使得环境温度对铝管或铜管8的温度影响低于规定限值。
送入和排出测量气体所需的气体管接头11、12可如图1所示在不锈钢管1的末端区域内直接布置在该不锈钢管上，或者如图2所示布置在末端件2、3中，其中，测量气体也可以经管子中间的气体管接头13送入，经两末端区域内的气体管接头11、12排出。
Claims (5)
1.一种用于一气体分析仪的可加热流通测量皿，包括：
一由耐腐材料构成的内管(1)，所述内管的两端分别被一末端件(2，3)和一固定在所述末端件中的可透辐射的窗口(4，5)封闭，
一用于加热所述末端件(2，3)的电加热装置(6，7)，
一由导热性能良好的材料构成的外管(8)，所述外管在形成一较窄间隙(9)的情况下同轴包围所述内管(1)，以及
一包围所述外管(8)的隔热装置(10)，
其中，所述加热装置(6，7)整合在所述末端件(2，3)中，或者从外部紧贴所述末端件(2，3)安装。
2.根据权利要求1所述的可加热流通测量皿，其特征在于，
所述内管(1)由下列材料中的一种构成：不锈钢、钽、PTFE、碳纤维复合材料。
3.根据权利要求1或2所述的可加热流通测量皿，其特征在于，
所述外管(8)由下列材料中的一种构成：铝、铜。
4.根据权利要求1至3中任一项权利要求所述的可加热流通测量皿，其特征在于，
所述内管(1)在其末端区域内分别具有一气体管接头(11，12)。
5.根据权利要求1至3中任一项权利要求所述的可加热流通测量皿，其特征在于，
所述末端件(2，3)分别具有一气体管接头(11，12)。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200910029949 DE102009029949B3 (de) | 2009-06-19 | 2009-06-19 | Beheizbare Durchflussmesszelle |
| DE102009029949.1 | 2009-06-19 | ||
| PCT/EP2010/058447 WO2010146079A1 (de) | 2009-06-19 | 2010-06-16 | Beheizbare durchflussmesszelle |
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| Publication Number | Publication Date |
|---|---|
| CN102803928A true CN102803928A (zh) | 2012-11-28 |
| CN102803928B CN102803928B (zh) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201080027295.1A Expired - Fee Related CN102803928B (zh) | 2009-06-19 | 2010-06-16 | 可加热的流通测量皿 |
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| Country | Link |
|---|---|
| US (1) | US9021861B2 (zh) |
| EP (1) | EP2443434B1 (zh) |
| CN (1) | CN102803928B (zh) |
| DE (1) | DE102009029949B3 (zh) |
| WO (1) | WO2010146079A1 (zh) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234908A (zh) * | 2013-04-26 | 2013-08-07 | 青岛科技大学 | 温控气体红外分析通用型联接装置 |
| CN106164648A (zh) * | 2014-01-22 | 2016-11-23 | Avl排放测试系统有限责任公司 | 借助红外线吸收光谱确定试样气流内至少一种气体的浓度的装置 |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012126469A1 (en) * | 2011-03-23 | 2012-09-27 | Danfoss Ixa A/S | Gas sensor with vortex |
| RU2573669C1 (ru) * | 2014-10-02 | 2016-01-27 | Общество с ограниченной ответственностью "Научно-производственное объединение "СПЕКТРОН" | Измерительная кювета поточного анализатора серы в нефти и нефтепродуктах |
| US11249010B2 (en) * | 2019-03-28 | 2022-02-15 | Flir Detection, Inc. | Carbon filled polymer structure for high temperature chemical detector systems and methods |
| JP7099416B2 (ja) * | 2019-08-19 | 2022-07-12 | 横河電機株式会社 | ガス分析計 |
| CN112763530A (zh) * | 2020-12-16 | 2021-05-07 | 江苏海乐塑胶有限公司 | 一种pvc压延膜耐温检测装置 |
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| JP2002267596A (ja) * | 2001-03-09 | 2002-09-18 | Nippon Soken Inc | 赤外線ガス分析装置 |
| US20060263256A1 (en) * | 2005-05-17 | 2006-11-23 | Nitrex Metal Inc. | Apparatus and method for controlling atmospheres in heat treating of metals |
| CN101281121A (zh) * | 2008-05-22 | 2008-10-08 | 上海交通大学 | 快速变温小型恒温样品池 |
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-
2009
- 2009-06-19 DE DE200910029949 patent/DE102009029949B3/de not_active Expired - Fee Related
-
2010
- 2010-06-16 US US13/379,302 patent/US9021861B2/en not_active Expired - Fee Related
- 2010-06-16 EP EP10723150.8A patent/EP2443434B1/de not_active Not-in-force
- 2010-06-16 CN CN201080027295.1A patent/CN102803928B/zh not_active Expired - Fee Related
- 2010-06-16 WO PCT/EP2010/058447 patent/WO2010146079A1/de active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1500740A (en) * | 1974-09-05 | 1978-02-08 | Draegerwerk Ag | Gas measuring apparatus |
| JPS57163845A (en) * | 1981-04-02 | 1982-10-08 | Toshiba Corp | Thermostatic flow cell |
| JP2002267596A (ja) * | 2001-03-09 | 2002-09-18 | Nippon Soken Inc | 赤外線ガス分析装置 |
| US20060263256A1 (en) * | 2005-05-17 | 2006-11-23 | Nitrex Metal Inc. | Apparatus and method for controlling atmospheres in heat treating of metals |
| CN101281121A (zh) * | 2008-05-22 | 2008-10-08 | 上海交通大学 | 快速变温小型恒温样品池 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234908A (zh) * | 2013-04-26 | 2013-08-07 | 青岛科技大学 | 温控气体红外分析通用型联接装置 |
| CN106164648A (zh) * | 2014-01-22 | 2016-11-23 | Avl排放测试系统有限责任公司 | 借助红外线吸收光谱确定试样气流内至少一种气体的浓度的装置 |
| CN106164648B (zh) * | 2014-01-22 | 2019-08-06 | Avl排放测试系统有限责任公司 | 借助红外线吸收光谱确定试样气流内至少一种气体的浓度的装置 |
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|---|---|
| DE102009029949B3 (de) | 2011-01-05 |
| US9021861B2 (en) | 2015-05-05 |
| US20120192621A1 (en) | 2012-08-02 |
| EP2443434A1 (de) | 2012-04-25 |
| WO2010146079A1 (de) | 2010-12-23 |
| EP2443434B1 (de) | 2015-12-02 |
| CN102803928B (zh) | 2015-07-08 |
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