JPH0226188B2 - - Google Patents
Info
- Publication number
- JPH0226188B2 JPH0226188B2 JP55020610A JP2061080A JPH0226188B2 JP H0226188 B2 JPH0226188 B2 JP H0226188B2 JP 55020610 A JP55020610 A JP 55020610A JP 2061080 A JP2061080 A JP 2061080A JP H0226188 B2 JPH0226188 B2 JP H0226188B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- detection element
- oxygen concentration
- filter
- combustible
- 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.)
- Expired - Lifetime
Links
- 239000007789 gas Substances 0.000 claims description 165
- 239000001301 oxygen Substances 0.000 claims description 48
- 229910052760 oxygen Inorganic materials 0.000 claims description 48
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 47
- 238000001514 detection method Methods 0.000 claims description 44
- 239000000428 dust Substances 0.000 claims description 18
- 238000005259 measurement Methods 0.000 claims description 6
- 239000007784 solid electrolyte Substances 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 description 11
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
- G01N33/0032—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array using two or more different physical functioning modes
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Sampling And Sample Adjustment (AREA)
Description
【発明の詳細な説明】
本発明は各種燃焼装置内に直接挿入して排ガス
中の酸素濃度および可燃性ガスを同時に検出する
炉内直接挿入形式の可燃性ガスおよび酸素濃度同
時検出器に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a combustible gas and oxygen concentration simultaneous detector that can be inserted directly into various combustion devices to simultaneously detect the oxygen concentration and combustible gas in exhaust gas. be.
従来、例えば火力発電所のボイラーあるいは各
種燃焼炉等においては、燃料の燃焼をより完全に
行なうため理論空気量よりもかなり過剰の空気を
供給し、燃焼排ガス中の残留酸素濃度が１％程度
になるように空気比が設定され燃焼が行なわれて
いた。しかしながら、供給空気量が多ければ排ガ
ス量も当然多くなり、それだけ熱損失が大きいも
のである。従つて、エネルギー節約面より今日に
おいては供給空気量を少なくし排ガス中の残留酸
素濃度を0.5％程度におさえる燃焼法が行なわれ
ている。そのためには、各種燃焼装置より排出さ
れる排ガス中の残留酸素濃度を例えば固体電解質
よりなる酸素濃度検出器にて検出し、その検出さ
れた酸素濃度に応じて空燃比を自動的に調節する
ことが行なわれている。 Conventionally, for example, in the boilers of thermal power plants or various combustion furnaces, air is supplied in excess of the theoretical amount in order to more completely burn the fuel, and the residual oxygen concentration in the combustion exhaust gas is reduced to about 1%. The air ratio was set so that combustion was carried out. However, if the amount of supplied air is large, the amount of exhaust gas will naturally be large, and the heat loss will be correspondingly large. Therefore, in order to save energy, combustion methods are now being used in which the amount of supplied air is reduced and the residual oxygen concentration in the exhaust gas is kept to about 0.5%. To achieve this, it is necessary to detect the residual oxygen concentration in the exhaust gas discharged from various combustion devices using, for example, an oxygen concentration detector made of a solid electrolyte, and automatically adjust the air-fuel ratio according to the detected oxygen concentration. is being carried out.
しかしながら、このような排ガス中の酸素濃度
を酸素濃度検出器で検出して空燃比を自動的に調
節するのみでは、例えば負荷変動等の外乱条件の
変動に際し多量の黒煙を発生することがあり、大
気汚染に関する公害防止上も好ましくなかつた。 However, simply detecting the oxygen concentration in the exhaust gas with an oxygen concentration detector and automatically adjusting the air-fuel ratio may generate a large amount of black smoke when disturbance conditions change, such as load fluctuations. It was also unfavorable in terms of preventing air pollution.
本発明は可燃性ガスおよび酸素濃度同時検出器
は、従来のこのような欠点を解決するためになさ
れたものである。本発明の要旨は下記の点にあ
る。 The present invention is a simultaneous combustible gas and oxygen concentration detector that has been developed to solve these conventional drawbacks. The gist of the present invention is as follows.
第１発明
排ガス中の可燃ガス検出素子と、酸素濃度検出
素子とを排ガス中に直接挿入される保護管中の同
一のガス流通路中に支持し、保護管のガス流入側
にダスト捕集用フイルターをもつたガス捕集容器
を設け、ガス捕集容器のガス流入側に設けたガス
流入孔の開口面積をそのガス流出側に設けたガス
流出孔の開口面積より大きくし、ダスト捕集用フ
イルターで仕切られたガス流通路内が正圧に保持
されるよう構成し、ダスト除去用フイルター中の
同一ガス流通路内で可燃ガス検出素子を固体電解
質酸素検出素子よりガス導入側に離して設置し、
上記測定ガスをダスト除去用フイルターを介して
それぞれの上記測定ガスをダスト除去用フイルタ
ーを介しそれぞれの上記センサ素子に測定ガスを
供給するよう構成したことを特徴とする可燃性ガ
スおよび酸素濃度同時検出装置。First invention A combustible gas detection element in exhaust gas and an oxygen concentration detection element are supported in the same gas flow path in a protection tube inserted directly into the exhaust gas, and a dust collection device is provided on the gas inflow side of the protection tube. A gas collection container with a filter is provided, and the opening area of the gas inlet hole provided on the gas inflow side of the gas collection container is made larger than the opening area of the gas outlet hole provided on the gas outlet side, and the gas collection container is used for dust collection. The structure is configured so that a positive pressure is maintained in the gas flow path partitioned by a filter, and the combustible gas detection element is placed further away from the solid electrolyte oxygen detection element on the gas introduction side within the same gas flow path in the dust removal filter. death,
Simultaneous detection of combustible gas and oxygen concentration, characterized in that the measurement gas is supplied to each of the sensor elements via a dust removal filter, and the measurement gas is supplied to each of the sensor elements via a dust removal filter. Device.
第２発明
排ガス中の可燃性ガス検出素子と酸素濃度検出
素子とを排ガス中に直接挿入される保護管中の隔
離された異なるガス流通路内にそれぞれ設置し、
両センサ素子の開放端にそれぞれダスト捕集用フ
イルターをもつたガス捕集容器を取付け、両ガス
捕集容器にガス流入孔とガス流出孔とを設け、ガ
ス流入孔の開口面積をガス流出孔の開口面積より
大きくし、前記フイルターにより仕切られたガス
流通路の室内が正圧となり、それぞれのセンサ素
子を通り排出口に測定ガスが流れるよう構成し、
可燃性ガス検出素子を酸素濃度検出素子へのガス
流通路とは隔離されそれぞれのダスト除去用フイ
ルターにより仕切られた異なるガス流通路内に設
置したことを特徴とする可燃性ガスおよび酸素濃
度同時検出器。2nd invention A combustible gas detection element and an oxygen concentration detection element in exhaust gas are installed in separate and different gas flow passages in a protection tube directly inserted into the exhaust gas,
A gas collection container with a dust collection filter is attached to the open end of both sensor elements, and a gas inflow hole and a gas outflow hole are provided in both gas collection containers, and the opening area of the gas inflow hole is equal to the gas outflow hole. The opening area is larger than the opening area of the filter, and the chamber of the gas flow path partitioned by the filter has a positive pressure, and the measurement gas flows through each sensor element to the exhaust port,
Simultaneous detection of combustible gas and oxygen concentration, characterized in that the combustible gas detection element is installed in a different gas flow passage separated from the gas flow passage to the oxygen concentration detection element and separated by respective dust removal filters. vessel.
本発明の更に詳しい構成を一具体例を示す第１
図に基いて説明すれば耐熱鋼あるいはセラミツク
ス質等よりなる保護管１の内部にジルコニア等の
固体電解質よりなる酸素濃度検出素子２が収納設
置されている。この酸素濃度検出素子２は有底円
筒形よりなり内外面に白金等の電極（図示せず）
が設けられ、内面が基準ガスである空気に、外面
が被測定ガスである排ガスに接触するようになつ
ている。そしてこの固体電解質よりなる酸素濃度
検出素子２の周囲には、酸素濃度検出素子２の加
熱用のヒーター３が設けられており、このヒータ
ー３と保護管１との間には断熱材４が、またヒー
ター３と酸素濃度検出素子２との間には支持体５
がそれぞれ介在されている。そしてさらに好まし
くは半導体素子よりなる可燃性ガス検出素子６が
セラミツクス等よりなる支持管７によつて支持さ
れ断熱材４を通して前記酸素濃度検出素子２への
同一ガス流通路８に設置されている。この場合可
燃性ガス検出素子６は酸素濃度検出素子２よりガ
ス導入側に設けられている。そしてさらに、可燃
性ガス検出素子６および酸素濃度検出素子２への
ガス流入側には、排ガス中のダストを除去する多
孔セラミツクス質よりなるガス透過性のフイルタ
ー９が設けられ、そのフイルタ９のさらに排ガス
導入側には、発ガスが直接フイルター９に衝突す
るのを防止するためのガス衝突板１０が設けられ
ており、さらにガス衝突板１０およびフイルタ９
を囲うようにガス捕集容器１１が設けられてい
る。なおガス衝突板１０とガス捕集容器１１と
は、一体構造で形成されており、これにフイルタ
９が例えばアルミナセメント等の結合剤１２で結
合され全体がユニツト化されたものをネジ１３で
保護管１の先端部に取り付けられる構造のものが
保守点検上よいものである。なおガス捕集容器１
１には、排ガス流方向に対向してガス流入孔１４
がまた反対側には、ガス流入孔１４より開口面積
の小さなガス流出孔１５がそれぞれ設置されてい
る。なお１６はフイルター９を通過してガス流通
路８内に入つた排ガスの排出口である。なお可燃
性ガス検出素子６は、かならずしも酸素濃度検出
素子２と同一のガス流通路８内に設置しなくて
も、たとえば第２図に示すとおり酸素濃度検出素
子２へのガス流通路８とは隔離された異なるガス
流通路１７内に設置しても勿論よいものである。
この場合可燃性ガス検出素子６を設置するガス流
通路１７は、酸素濃度検出素子２を設置するガス
流通路８により前方にあつても後方にあつてもい
ずれでもよいものであるが、しかしながら、可燃
性ガス検出素子６のガス流入側には、例えば前述
のとおりの多孔セラミツクス質あるいは金網、繊
維等よりなるダスト除去用のフイルター９を設け
ることが必要であり、さらに第１図のガス捕集容
器１１のガス流入孔１４およびガス流出孔１５と
同じように、ガス流通路１７へのガス流入孔１８
はガス流出孔１９より開口面積が大きいことが好
ましいものである。 A first example showing a more detailed configuration of the present invention
Referring to the drawing, an oxygen concentration detecting element 2 made of a solid electrolyte such as zirconia is housed inside a protective tube 1 made of heat-resistant steel or ceramics. This oxygen concentration detection element 2 has a cylindrical shape with a bottom, and has electrodes (not shown) made of platinum or the like on the inner and outer surfaces.
is provided, and the inner surface is in contact with air, which is the reference gas, and the outer surface is in contact with the exhaust gas, which is the gas to be measured. A heater 3 for heating the oxygen concentration detection element 2 is provided around the oxygen concentration detection element 2 made of a solid electrolyte, and a heat insulating material 4 is provided between the heater 3 and the protection tube 1. Further, a support 5 is provided between the heater 3 and the oxygen concentration detection element 2.
are respectively mediated. More preferably, a combustible gas detection element 6 made of a semiconductor element is supported by a support tube 7 made of ceramics or the like, and is installed in the same gas flow path 8 to the oxygen concentration detection element 2 through the heat insulating material 4. In this case, the combustible gas detection element 6 is provided closer to the gas introduction side than the oxygen concentration detection element 2. Further, on the gas inflow side to the combustible gas detection element 6 and the oxygen concentration detection element 2, a gas permeable filter 9 made of porous ceramic material for removing dust in the exhaust gas is provided. A gas collision plate 10 is provided on the exhaust gas introduction side to prevent emitted gas from directly colliding with the filter 9, and the gas collision plate 10 and the filter 9 are
A gas collection container 11 is provided so as to surround the gas collection container 11 . The gas collision plate 10 and the gas collection container 11 are integrally formed, and the filter 9 is bonded to this with a binder 12 such as alumina cement, and the whole unit is protected with screws 13. A structure that can be attached to the tip of the tube 1 is suitable for maintenance and inspection. In addition, gas collection container 1
1 includes a gas inlet hole 14 facing the exhaust gas flow direction.
On the opposite side, gas outlet holes 15 each having a smaller opening area than the gas inlet holes 14 are installed. Note that 16 is an outlet for the exhaust gas that has passed through the filter 9 and entered the gas flow passage 8. Note that the combustible gas detection element 6 does not necessarily have to be installed in the same gas flow path 8 as the oxygen concentration detection element 2; for example, as shown in FIG. Of course, they may be installed in different isolated gas flow passages 17.
In this case, the gas flow passage 17 in which the combustible gas detection element 6 is installed may be located either in front or behind the gas flow passage 8 in which the oxygen concentration detection element 2 is installed; however, On the gas inflow side of the combustible gas detection element 6, it is necessary to provide a dust removal filter 9 made of, for example, porous ceramic material, wire mesh, fiber, etc. as described above, and furthermore, a filter 9 for removing dust, which is made of porous ceramic material, wire mesh, fiber, etc. as described above, is required. Similar to the gas inflow hole 14 and gas outflow hole 15 of the container 11, the gas inflow hole 18 into the gas flow passage 17
It is preferable that the opening area is larger than that of the gas outlet hole 19.
本発明の検出器は以上のべたような構成より成
るものであるので、例えば第１図に示す具体例に
ついてその作用を説明すると、ガス捕集容器１１
のガス流入孔１４を炉内のガス流方向に対向させ
て検出器を炉内に直接挿入すると、排ガスはガス
捕集容器１１のガス流入孔１４を通つてガス衝突
板１０に衝突し、ガス捕集容器１１中に入り、反
対側のガス流出孔１５より流出する。このとき、
ガス捕集容器１１内はガス流入孔１４とガス流出
孔１５との開口面積関係より正圧となるので、排
ガスの一部はフイルター９を通過してガス流通路
８内に流入し、可燃性ガス検出素子６によつて排
ガス中の可燃性ガス濃度が検出されるとともに酸
素濃度検出素子２によつて排ガス中の残留酸素濃
度がそれぞれ同時にしかも連続的に検出される。
そしてガス流通路８中の排ガスは、支持体５のガ
ス通路を通つて排出口１６より検出器外に排出さ
れるものである。 Since the detector of the present invention has the above-described configuration, the operation will be explained with reference to the specific example shown in FIG. 1, for example.
When the detector is directly inserted into the furnace with the gas inlet holes 14 of the gas inlet 14 facing the gas flow direction in the furnace, the exhaust gas passes through the gas inlet holes 14 of the gas collection container 11 and collides with the gas collision plate 10, causing the gas to collide with the gas collision plate 10. The gas enters the collection container 11 and flows out from the gas outlet hole 15 on the opposite side. At this time,
Since the inside of the gas collection container 11 has a positive pressure due to the opening area relationship between the gas inflow hole 14 and the gas outflow hole 15, a part of the exhaust gas passes through the filter 9 and flows into the gas flow passage 8, causing flammable The gas detection element 6 detects the combustible gas concentration in the exhaust gas, and the oxygen concentration detection element 2 simultaneously and continuously detects the residual oxygen concentration in the exhaust gas.
The exhaust gas in the gas flow passage 8 passes through the gas passage of the support 5 and is discharged from the exhaust port 16 to the outside of the detector.
第３図に示したものは本発明の可燃性ガスおよ
び酸素濃度同時検出器により排ガス中の可燃性ガ
ス濃度および酸素濃度を同時に連続的に測定した
結果の一例であり、この図からも明らかなように
可燃性ガスと酸素濃度とが同時に極めて高精度に
測定できるものであり、例えば排ガス中に含まれ
る可燃性ガスが多くなつた場合には、制御設定酸
素濃度に一定バイアスを加え燃焼用供給空気を増
加させ可燃性ガス濃度を下げ、この可燃性ガス濃
度がある設定値以下になれば、バイアスを解除す
るといつた燃焼制御システム用に使用することが
できるものである。 What is shown in Figure 3 is an example of the results of simultaneously and continuously measuring the combustible gas concentration and oxygen concentration in exhaust gas using the combustible gas and oxygen concentration simultaneous detector of the present invention. In this way, combustible gas and oxygen concentration can be measured at the same time with extremely high precision.For example, when the amount of combustible gas contained in exhaust gas increases, it is possible to apply a constant bias to the control set oxygen concentration and adjust the supply for combustion. It can be used for combustion control systems such as increasing the air flow and lowering the flammable gas concentration, and canceling the bias when the flammable gas concentration falls below a certain set value.
以上述べたとおり、本発明の可燃性ガスおよび
酸素濃度同時検出器は、炉内に直接挿入する形式
でありながら可燃性ガス濃度と残留酸素濃度とが
同時にしかも連続的に測定検出できるものであ
り、さらに酸素濃度検出素子および可燃性ガス検
出素子へのガス流入通路にダスト除去用のフイル
ターが設けられていることにより排ガス中に含ま
れるダストにより酸素濃度検出素子および可燃性
ガス検出素子の検出感度が低下することがほとん
どなく、高精度でかつ応答性よく可燃性ガスおよ
び酸素濃度を検出できるものであり、従つて大気
汚染の原因となる黒煙の発生を未然に検出できる
とともに低酸素濃度燃焼を可能にできるものであ
り、火力発電所のボイラあるいは各種燃焼炉の低
酸素濃度燃焼の自動燃焼制御に使用できるもので
あつて、省エネルギーおよび公害防止上極めて有
用な可燃性ガスおよび酸素濃度同時検出器であ
る。 As described above, the simultaneous combustible gas and oxygen concentration detector of the present invention can measure and detect the combustible gas concentration and residual oxygen concentration simultaneously and continuously, even though it is inserted directly into the furnace. In addition, a filter for removing dust is provided in the gas inflow passage to the oxygen concentration detection element and the combustible gas detection element, so that the detection sensitivity of the oxygen concentration detection element and the combustible gas detection element is reduced by the dust contained in the exhaust gas. It is possible to detect combustible gas and oxygen concentrations with high accuracy and responsiveness, with almost no drop in the concentration of gas.Therefore, it is possible to detect the generation of black smoke that causes air pollution before it occurs, and to detect low oxygen concentration combustion. It can be used for automatic combustion control of low oxygen concentration combustion in boilers of thermal power plants or various combustion furnaces, and is extremely useful for energy saving and pollution prevention.It is a simultaneous detection of flammable gas and oxygen concentrations. It is a vessel.
第１図は本発明の酸素濃度および可燃性ガス同
時検出器の一具体例を示す説明図、第２図は本発
明の異なる具体例を示す説明図、第３図は本発明
検出器による酸素濃度および可燃性ガス濃度
（CO濃度換算値）の実測値を示す説明図である。
１……保護管、２……酸素濃度検出素子、３…
…ヒーター、４……断熱材、５……支持体、６…
…可燃性ガス検出素子、７……支持管、８，１７
……ガス流通路、９……フイルター、１０……ガ
ス衝突板、１１……ガス捕集容器、１２……結合
剤、１３……ネジ、１４，１８……ガス流入孔、
１５，１９……ガス流出孔、１６……排出口。
FIG. 1 is an explanatory diagram showing one specific example of the simultaneous oxygen concentration and combustible gas detector of the present invention, FIG. 2 is an explanatory diagram showing a different specific example of the present invention, and FIG. FIG. 2 is an explanatory diagram showing actual measured values of concentration and combustible gas concentration (CO concentration equivalent value). 1... Protection tube, 2... Oxygen concentration detection element, 3...
...Heater, 4...Insulating material, 5...Support, 6...
...Flammable gas detection element, 7...Support tube, 8, 17
... Gas flow passage, 9 ... Filter, 10 ... Gas collision plate, 11 ... Gas collection container, 12 ... Binder, 13 ... Screw, 14, 18 ... Gas inflow hole,
15, 19...Gas outflow hole, 16...Exhaust port.
Claims (1)
排ガス中に直接挿入される保護管中の同一のガス
流通路中に支持し、保護管のガス流入側にダスト
捕集用フイルターをもつたガス捕集容器を設け、
ガス捕集容器のガス流入側に設けたガス流入孔の
開口面積をそのガス流出側に設けたガス流出孔の
開口面積より大きくし、ダスト捕集用フイルター
で仕切られたガス流通路内が正圧に保持されるよ
う構成し、ダスト除去用フイルター中の同一ガス
流通路内で可燃ガス検出素子を固体電解質酸素検
出素子よりガス導入側に離して設置し、上記測定
ガスをダスト除去用フイルターを介してそれぞれ
の上記センサ素子に測定ガスを供給するよう構成
したことを特徴とする可燃性ガスおよび酸素濃度
同時検出装置。 ２ 可燃性ガス検出素子と酸素濃度検出素子とを
排ガス中に直接挿入される保護管中の隔離された
異なるガス流通路内にそれぞれ設置し、両センサ
素子の開放端にそれぞれダスト捕集用フイルター
をもつたガス捕集容器を取付け、両ガス捕集容器
にガス流入孔とガス流出孔とを設け、ガス流入孔
の開口面積をガス流出孔の開口面積より大きく
し、前記フイルターにより仕切られたガス流通路
の室内が正圧となり、それぞれのセンサ素子を通
り排出口に測定ガスが流れるよう構成し、可燃性
ガス検出素子を酸素濃度検出素子へのガス流通路
とは隔離されそれぞれのダスト除去用フイルター
により仕切られた異なるガス流通路内に設置した
ことを特徴とする可燃性ガスおよび酸素濃度同時
検出器。[Claims] 1. A combustible gas detection element and an oxygen concentration detection element are supported in the same gas flow path in a protection tube inserted directly into the exhaust gas, and dust is collected on the gas inflow side of the protection tube. A gas collection container with a filter for
The opening area of the gas inflow hole provided on the gas inflow side of the gas collection container is made larger than the opening area of the gas outflow hole provided on the gas outflow side, so that the inside of the gas flow path partitioned by the dust collection filter is correct. The combustible gas detection element is installed away from the solid electrolyte oxygen detection element on the gas introduction side within the same gas flow path in the dust removal filter, and the measurement gas is passed through the dust removal filter. A simultaneous detection device for combustible gas and oxygen concentrations, characterized in that the measurement gas is supplied to each of the sensor elements through the sensor elements. 2. A combustible gas detection element and an oxygen concentration detection element are installed in separate and different gas flow passages in a protection tube inserted directly into the exhaust gas, and a dust collection filter is installed at the open end of both sensor elements. A gas collection container having a gas collection container is installed, and both gas collection containers are provided with a gas inflow hole and a gas outflow hole, the opening area of the gas inflow hole is made larger than the opening area of the gas outflow hole, and the gas collection container is partitioned by the filter. The chamber of the gas flow passage is configured to have positive pressure, and the measurement gas flows through each sensor element to the exhaust port, and the combustible gas detection element is separated from the gas flow passage to the oxygen concentration detection element, and dust is removed from each one. A simultaneous combustible gas and oxygen concentration detector, characterized in that it is installed in different gas flow paths separated by filters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2061080A JPS56118661A (en) | 1980-02-22 | 1980-02-22 | Combustible gas and oxygen concentration detecting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2061080A JPS56118661A (en) | 1980-02-22 | 1980-02-22 | Combustible gas and oxygen concentration detecting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56118661A JPS56118661A (en) | 1981-09-17 |
| JPH0226188B2 true JPH0226188B2 (en) | 1990-06-07 |
Family
ID=12032025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2061080A Granted JPS56118661A (en) | 1980-02-22 | 1980-02-22 | Combustible gas and oxygen concentration detecting equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56118661A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5851264U (en) * | 1981-10-05 | 1983-04-07 | トヨタ自動車株式会社 | exhaust gas sensor |
| CN103335870B (en) * | 2013-07-17 | 2015-02-25 | 国家电网公司 | Flue gas sampling system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4830493A (en) * | 1971-08-20 | 1973-04-21 | ||
| JPS4860493A (en) * | 1971-11-30 | 1973-08-24 | ||
| GB1427395A (en) * | 1972-04-25 | 1976-03-10 | Westinghouse Electric Corp | Gas measuring probe for industrial applications |
-
1980
- 1980-02-22 JP JP2061080A patent/JPS56118661A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4830493A (en) * | 1971-08-20 | 1973-04-21 | ||
| JPS4860493A (en) * | 1971-11-30 | 1973-08-24 | ||
| GB1427395A (en) * | 1972-04-25 | 1976-03-10 | Westinghouse Electric Corp | Gas measuring probe for industrial applications |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56118661A (en) | 1981-09-17 |
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