JP3502060B2 - Smoke meter - Google Patents
Smoke meterInfo
- Publication number
- JP3502060B2 JP3502060B2 JP2001141504A JP2001141504A JP3502060B2 JP 3502060 B2 JP3502060 B2 JP 3502060B2 JP 2001141504 A JP2001141504 A JP 2001141504A JP 2001141504 A JP2001141504 A JP 2001141504A JP 3502060 B2 JP3502060 B2 JP 3502060B2
- Authority
- JP
- Japan
- Prior art keywords
- mass flow
- exhaust gas
- measurement
- solenoid valve
- pipe
- 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 - Fee Related
Links
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
- Sampling And Sample Adjustment (AREA)
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、車両等の排気ガス
の排煙濃度を測定するスモークメータに関するものであ
る。
【０００２】
【従来の技術】自動車等の排気ガスの排煙が大気を汚染
する公害問題となっており、排煙を低減したエンジンを
製造するためにスモークメータで排煙濃度を測定してい
る。この排煙濃度を測定するため、容量式のピストン往
復動ポンプによって排気ガスを管路に吸引して導入し、
この管路を直交して移動する巻取ロール式の測定用濾紙
に煙を付着させて測定を行うようにしたスモークメータ
が実公平１−１９０６８号で提供されている。
【０００３】
【発明が解決しようとする課題】しかしながら、上記従
来のスモークメータでは、容量式の往復動ポンプによっ
てサンプリングを行っているため連続運転ができない上
に、排気ガス中の水分が管路内に結露し、これに煙粒子
が付着することと、排気ガスの温度により吸引量が変わ
ることで測定精度に影響を及ぼしている問題がある。
【０００４】本発明の目的は、管路内の結露によるカー
ボン粒子の付着を防止し、排気ガス温度に影響しない高
精度の測定を可能にした常に一定の質量流量型のスモー
クメータを提供することである。
【０００５】
【課題を解決するための手段】上記の目的を達成するた
めの本発明は、端末に回転式ポンプを備えエンジンの排
気管から排気ガスを採取して導入する管路と、この管路
の排気ガス導入上流側から同管路内の結露を防止するた
めの放熱板を備えた電熱コイルと、測定用濾紙ホルダ
と、この測定用濾紙ホルダや前記管路内を清掃するため
に圧縮空気を導入する第１電磁弁と、時間設定に対する
排気ガス質量流量を制御するために大気を取り入れる第
２電磁弁と、前記回転式ポンプで採取した排気ガスを常
に一定の質量流量に制御するマスフロコントローラとを
順次配置し、前記第１電磁弁、第２電磁弁及びマスフロ
コントローラを制御するコントローラとから構成したこ
とを特徴とするものである。
【０００６】
【発明の実施の形態】以下本発明の実施の形態を図面に
基づいて説明する。図１において、１は排気管である。
この排気管１から排気ガスのサンプリングを採取するた
めに管路３の一端が挿入され、この管路３の一端に排気
ガス採取カバー２が施されている。
【０００７】本発明は、前記管路３の排気ガス導入上流
側から同管路３の結露を防止する放熱板４を備えた電熱
コイル５と、前記電熱コイル５より下流に設けた測定用
濾紙ホルダ６と、測定用濾紙ホルダ６や前記管路３内を
清掃するために圧縮空気を導入する第１電磁弁８と、時
間設定に対する排気ガス質量流量を制御するために大気
を取り入れる第２電磁弁９が設けられ前記測定用濾紙ホ
ルダ６より下流に接続された圧縮空気取り入れ管１３及
び大気取り入れ管１４と、大気取り入れ管１４より下流
に配置されたマスフロコントローラ１１と、前記マスフ
ロコントローラ１１より下流に配置された回転式ポンプ
１２と、前記第１電磁弁８、第２電磁弁９及び前記マス
フロコントローラ１１を制御するコントローラ１０とか
ら構成したものである。尚、符号７は前記測定用濾紙ホ
ルダ６に位置した測定用濾紙を示す。
【０００８】本発明は上記の通りの構成であるから、回
転式ポンプ１２を連続運転状態とし排気管１から管路３
に吸引して導入されたサンプリング用の排気ガスは電熱
コイル５を経て測定用濾紙ホルダ６の測定用濾紙７で煙
粒子を捕捉する。この煙粒子を捕捉するための排気ガス
流量は、回転式ポンプ１２による吸引量をコントローラ
１０で予め設定したマスフロコントローラ１１で常に一
定の質量流量に制御される。
【０００９】また、時間設定に対する排気ガス質量流量
は大気取り入れ管１４の第２電磁弁９をコントローラ１
０によってＯＮ−ＯＦＦ制御することによって行われ
る。尚、測定中は圧縮空気取り入れ管１３の第１電磁弁
８は閉止されている。
【００１０】測定終了後にはコントローラ１０により大
気取り入れ管１４の第２電磁弁９を閉止し、圧縮空気取
り入れ管１３の第１電磁弁８を開口して圧縮空気を管路
３内に導入して測定用濾紙ホルダ６や管路３内を清掃す
る。
【００１１】前記測定シーケンスは図２で示すように、
大気取り入れ管１４の第２電磁弁９をコントローラ１０
によってＯＮ−ＯＦＦしている間は質量流量Ｍにコント
ロールされ、測定終了後は次回の測定前に圧縮空気取り
入れ管１３の第１電磁弁８が開閉して清掃Ｐが行われる
のである。
【００１２】本発明では、測定用濾紙ホルダ６の上流側
の管路３は放熱板４を備えた電熱コイルと５によって約
８０℃程度に加熱されているため、排気ガス中の水分に
よる管路３内の結露を防止し煙粒子が結露に付着するこ
とがなく、測定用濾紙７で精度よく煙粒子を捕捉するこ
とができる。
【００１３】また、回転式ポンプ１２による連続運転と
大気取り入れ管１４の第２電磁弁９のＯＮ−ＯＦＦで測
定する排気ガスのサンプリングはマスフロコントローラ
１１により質量流量に制御されるため、排気ガスの温度
よって測定精度に影響を及ぼすことがない。
【００１４】
【発明の効果】以上述べたように本発明によると、排気
ガスのサンプリングを採取する管路に結露を防止する放
熱板を備えた電熱コイルと、煙濃度測定時に測定用濾紙
ホルダの下流で管路に大気を導入して排気ガスと合流さ
せ連続運転する回転式ポンプの吸引による排気ガス流量
をマスフロコントローラで常に一定の質量流量に制御す
るようした構成であるから、煙粒子が管路に付着するよ
うなことがなく煙粒子は濾紙に精度よく付着し、また、
排気ガス温度に影響されることなく排煙濃度を高精度に
測定することができる利点を有しています。さらに、測
定終了後には次回の測定前に圧縮空気を管路内に導入し
て測定用濾紙ホルダや管路内を清掃することができる利
点も有している。 Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a smoke meter for measuring a smoke concentration of exhaust gas from a vehicle or the like. 2. Description of the Related Art Exhaust gas from exhaust gas from automobiles and the like has become a pollution problem that pollutes the atmosphere. In order to manufacture an engine with reduced smoke emission, the smoke exhaust gas concentration is measured with a smoke meter. . In order to measure this smoke concentration, exhaust gas is sucked and introduced into the pipeline by a capacity type piston reciprocating pump,
Japanese Utility Model Publication No. 1-10688 discloses a smoke meter which performs measurement by adhering smoke to a take-up roll type filter paper for measurement which moves orthogonally in this pipe line. [0003] However, in the above-mentioned conventional smoke meter, since the sampling is performed by the displacement type reciprocating pump, continuous operation cannot be performed, and moisture in the exhaust gas is reduced in the pipeline. There is a problem that the measurement accuracy is affected by the condensation of smoke particles on the surface and the change in the suction amount depending on the temperature of the exhaust gas. SUMMARY OF THE INVENTION An object of the present invention is to provide a constantly constant mass flow type smoke meter which prevents carbon particles from adhering due to dew condensation in a pipe line and enables high-precision measurement without affecting exhaust gas temperature. It is. [0005] In order to achieve the above object, the present invention provides a terminal equipped with a rotary pump and an engine exhaust pump.
A pipe for collecting and introducing exhaust gas from the trachea and preventing dew condensation in the pipe from the exhaust gas introduction upstream side of the pipe .
A heating coil with because of the heat radiating plate, the measuring filter paper holder
To clean the filter paper holder for measurement and the inside of the pipe.
A first solenoid valve for introducing compressed air to the
Introduce atmosphere to control exhaust gas mass flow
And second solenoid valves, always a mass flow controller for controlling a constant mass flow rate of the exhaust gas collected by the rotary pump
The first solenoid valve, the second solenoid valve, and a controller for controlling a mass flow controller are sequentially arranged . Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes an exhaust pipe.
One end of a pipe 3 is inserted to sample exhaust gas from the exhaust pipe 1, and an exhaust gas sampling cover 2 is provided on one end of the pipe 3. The present invention relates to an electric heating apparatus having a heat radiating plate 4 for preventing dew condensation on the pipeline 3 from the exhaust gas introduction upstream side of the pipeline 3.
Coil 5 , a filter paper holder 6 for measurement provided downstream of the electric heating coil 5, a filter paper holder 6 for measurement and the inside of the pipe 3
A first solenoid valve 8 for introducing compressed air for cleaning;
Air to control exhaust gas mass flow rate against
A compressed air intake pipe 13 and an air intake pipe 14 which are provided downstream of the measurement filter paper holder 6 and are provided with a second solenoid valve 9 for taking in the air, and a mass flow controller 11 which is arranged downstream of the air intake pipe 14 . It comprises a rotary pump 12 disposed downstream of the mass flow controller 11, a first solenoid valve 8, a second solenoid valve 9, and a controller 10 for controlling the mass flow controller 11. Reference numeral 7 indicates a filter paper for measurement positioned on the filter paper holder 6 for measurement. Since the present invention is configured as described above, the rotary pump 12 is set in a continuous operation state and the exhaust pipe 1 is connected to the pipe 3
Exhaust gas sampling introduced by suction into the heating
The smoke particles are captured by the measurement filter paper 7 of the measurement filter paper holder 6 via the coil 5 . The flow rate of the exhaust gas for capturing the smoke particles is always controlled to a constant mass flow rate by the mass flow controller 11 in which the suction amount by the rotary pump 12 is preset by the controller 10. The mass flow rate of the exhaust gas with respect to the time setting is controlled by controlling the second solenoid valve 9 of the atmosphere intake pipe 14 by the controller 1
This is performed by performing ON-OFF control with 0. During the measurement, the first solenoid valve of the compressed air intake pipe 13
8 is closed. After the measurement is completed, the controller 10 closes the second solenoid valve 9 of the air intake pipe 14, opens the first solenoid valve 8 of the compressed air intake pipe 13, and introduces compressed air into the pipe 3. The inside of the filter paper holder 6 for measurement and the inside of the conduit 3 are cleaned. The measurement sequence is as shown in FIG.
The second solenoid valve 9 of the air intake pipe 14 is connected to the controller 10
During the ON / OFF operation, the mass flow rate M is controlled, and after the measurement is completed, the first solenoid valve 8 of the compressed air intake pipe 13 is opened and closed and cleaning P is performed before the next measurement. In the present invention, since the pipe 3 on the upstream side of the filter paper holder 6 for measurement is heated to about 80 ° C. by the electric heating coil provided with the heat radiating plate 4 and the pipe 5 , the pipe 3 The condensation in the inside 3 is prevented, and the smoke particles do not adhere to the condensation, so that the measurement filter paper 7 can accurately capture the smoke particles. The mass flow controller 11 controls the mass flow of the exhaust gas measured by the continuous operation of the rotary pump 12 and the ON / OFF operation of the second solenoid valve 9 of the atmosphere intake pipe 14 . Does not affect the measurement accuracy. As described above, according to the present invention, an electric heating coil provided with a heat radiating plate for preventing dew condensation in a pipe for sampling exhaust gas, and a filter paper holder for measurement at the time of smoke concentration measurement are provided. the exhaust gas flow rate by the suction of the rotary pump from a structure in which constantly to control a constant mass flow in the mass flow controller for continuous operation is combined with the exhaust gas by introducing atmospheric air into the conduit downstream, smoke particles It will stick to the pipeline
The smoke particles adhere to the filter paper accurately without swelling ,
It has the advantage that smoke concentration can be measured with high accuracy without being affected by exhaust gas temperature. In addition,
After completing the measurement, introduce compressed air into the pipeline before the next measurement.
Can be used to clean the filter
It also has points.
【図面の簡単な説明】 【図１】本発明を示す構成図 【図２】本発明による測定シーケンス図 【符号の説明】 １ 排気管 ２ 排気ガス採取カバー ３ 管路 ４ 放熱板 ５ 電熱コイル ６ 測定用濾紙ホルダ ７ 測定用濾紙 ８ 第１電磁弁（圧縮空気管取り入れ管の） ９ 第２電磁弁（大気取り入れ管の） １０ コントローラ １１ マスフロコントローラ １２ 回転式ポンプ １３ 圧縮空気管取り入れ管 １４ 大気取り入れ管BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing the present invention. FIG. 2 is a measurement sequence diagram according to the present invention. DESCRIPTION OF REFERENCE NUMBERS 1 Exhaust pipe 2 Exhaust gas sampling cover 3 Pipe line 4 Heat sink 5 Electric heating coil 6 Filter paper holder for measurement 7 Filter paper for measurement 8 First solenoid valve (of compressed air pipe intake pipe) 9 Second solenoid valve (of air intake pipe) 10 Controller 11 Mass flow controller 12 Rotary pump 13 Compressed air pipe intake pipe 14 Atmosphere Intake tube
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｇ０１Ｎ 15/00 Ｇ０１Ｎ 15/00 Ｃ (58)調査した分野(Int.Cl.7，ＤＢ名) G01N 15/00 G01N 15/06 G01N 1/00 - 1/34 ──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. 7 identification code FI G01N 15/00 G01N 15/00 C (58) Field surveyed (Int.Cl. 7 , DB name) G01N 15/00 G01N 15 / 06 G01N 1/00-1/34
Claims (1)
管から排気ガスを採取して導入する管路と、この管路の
排気ガス導入上流側から同管路内の結露を防止するため
の放熱板を備えた電熱コイルと、測定用濾紙ホルダと、
この測定用濾紙ホルダや前記管路内を清掃するために圧
縮空気を導入する第１電磁弁と、時間設定に対する排気
ガス質量流量を制御するために大気を取り入れる第２電
磁弁と、前記回転式ポンプで採取した排気ガスを常に一
定の質量流量に制御するマスフロコントローラとを順次
配置し、前記第１電磁弁、第２電磁弁及びマスフロコン
トローラを制御するコントローラとから構成したことを
特徴とするスモークメータ。(57) [Claims] [Claim 1] A rotary pump is provided at a terminal and exhaust of an engine is provided.
A conduit for introducing and collect exhaust gases from the tube, in order to prevent condensation of the conduit from the exhaust gas inlet upstream of the conduit
A heating coil with a heat dissipation plate, and measuring filter paper holder,
To clean the filter paper holder for measurement and the inside of the pipe,
First solenoid valve for introducing compressed air and exhaust for time setting
A second electric power intake air to control the gas mass flow
And solenoid valves, always a mass flow controller for controlling a constant mass flow rate of the exhaust gas collected by the rotary pump sequentially
A smoke meter, comprising: a controller that controls the first solenoid valve, the second solenoid valve, and the mass flow controller, and is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001141504A JP3502060B2 (en) | 2001-05-11 | 2001-05-11 | Smoke meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001141504A JP3502060B2 (en) | 2001-05-11 | 2001-05-11 | Smoke meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002340778A JP2002340778A (en) | 2002-11-27 |
| JP3502060B2 true JP3502060B2 (en) | 2004-03-02 |
Family
ID=18987952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001141504A Expired - Fee Related JP3502060B2 (en) | 2001-05-11 | 2001-05-11 | Smoke meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3502060B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006132081A1 (en) * | 2005-06-09 | 2006-12-14 | Horiba, Ltd. | Exhaust gas dilution device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006194726A (en) * | 2005-01-13 | 2006-07-27 | Mazda Motor Corp | Pm particle number measuring device |
| JP5510017B2 (en) * | 2010-04-15 | 2014-06-04 | いすゞ自動車株式会社 | Exhaust sensor arrangement structure |
| WO2012039325A1 (en) | 2010-09-24 | 2012-03-29 | 株式会社堀場製作所 | Exhaust gas analysis system and exhaust gas analysis program |
| KR101250248B1 (en) | 2011-10-24 | 2013-04-03 | 한국과학기술연구원 | Apparatus for sampling carbon particle |
| JP6472706B2 (en) | 2014-05-15 | 2019-02-20 | 株式会社堀場製作所 | Exhaust gas analyzer |
| KR101706647B1 (en) * | 2015-08-20 | 2017-02-27 | 고등기술연구원연구조합 | Rotation type dust density measurment apparatus and method for dust density measurment |
| JP6573987B2 (en) * | 2015-12-28 | 2019-09-11 | Ｐｈｃホールディングス株式会社 | Air particulate measuring instrument and clean environment equipment |
| CN105973651A (en) * | 2016-04-26 | 2016-09-28 | 国网浙江省电力公司电力科学研究院 | Smoke dust collecting device and discharge system provided with same |
| CN107153022A (en) * | 2017-07-06 | 2017-09-12 | 湖南千盟智能信息技术有限公司 | A kind of online coke oven flue gas analytical instrument pretreatment system |
-
2001
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006132081A1 (en) * | 2005-06-09 | 2006-12-14 | Horiba, Ltd. | Exhaust gas dilution device |
| US7717002B2 (en) | 2005-06-09 | 2010-05-18 | Horiba, Ltd. | Exhaust gas dilution device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002340778A (en) | 2002-11-27 |
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