CN103376306A - Exhaust gas analyzer and probe unit - Google Patents
Exhaust gas analyzer and probe unit Download PDFInfo
- Publication number
- CN103376306A CN103376306A CN2013100792114A CN201310079211A CN103376306A CN 103376306 A CN103376306 A CN 103376306A CN 2013100792114 A CN2013100792114 A CN 2013100792114A CN 201310079211 A CN201310079211 A CN 201310079211A CN 103376306 A CN103376306 A CN 103376306A
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- CN
- China
- Prior art keywords
- main body
- cap shape
- shape parts
- gas sensor
- gas
- 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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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/10—Testing internal-combustion engines by monitoring exhaust gases or combustion flame
- G01M15/102—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases
- G01M15/108—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases using optical methods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
- F02D35/022—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions using an optical sensor, e.g. in-cylinder light probe
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N1/2252—Sampling from a flowing stream of gas in a vehicle exhaust
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
- G01N27/125—Composition of the body, e.g. the composition of its sensitive layer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/04—Methods of control or diagnosing
- F01N2900/0416—Methods of control or diagnosing using the state of a sensor, e.g. of an exhaust gas sensor
Abstract
The invention provides an exhaust gas analyzer which can ensure satisfactory operation when a gas sensor is replaced during the first-stage assembling, the assembling and the maintenance and a probe unit. The exhaust gas analyzer includes a gas sensor for detecting the specified content in waste gas and a sleeve. The sleeve is provided with a main body for inserting the gas sensor inside an inserting hole and a cap component threadedly connected with the main body and being configured to covering the insert hole. Meanwhile, the gas sensor is clamped by the cap component and the main body to be fixed in the sleeve by means of threadedly connecting the cap component to the main body.
Description
Technical field
The present invention relates to a kind of probe unit that is installed on the exhaust gas analysis system of special components such as being used for oxygen that analysis stream contains through the waste gas of this gas outlet and oxides of nitrogen such as the gas outlet of the burner relevant with internal combustion marine engine and boiler, waste combustion stove, industrial furnace etc. and is used for this exhaust gas analysis system.
Background technology
As this exhaust gas analysis system, the known probe unit of installing in the direct insertion gas outlet just like passing through of disclosing of patent documentation 1 detects the device of the special component in this waste gas to exhaust gas sampling the time.
Particularly, this probe unit has tubular sleeve, is contained in this sleeve inner and detects the gas sensor of the special component of described waste gas.And the gas sensor under the prior art is fixed (for example, with reference to 0040 section of patent documentation 1 etc.) with screw tightening in the many places of the front end face of described sleeve.
Yet, owing to may not guarantee suitable operating environment such as in the middle of the gas outlet (chimney) of boats and ships etc., for example have when changing sensor therefore that loading and unloading belong to the screw of small parts and be the situation that the operation of the screw of a plurality of genus small parts becomes very numerous and diverse and difficult.Particularly, occur easily that screw comes off or the situation such as screw terminal damage.
And, owing to also there is the situation that is rich in coal smoke in the waste gas of relevant boats and ships for example and is in high temperature more than 500 ℃, also exists and be infected with coal smoke or screw on the screw terminal and sticked at the situation of sleeve by burning, therefore operational difficulty will further increase in this case.
The prior art document
Patent documentation
Patent documentation 1: TOHKEMY 2010-276550 communique
Summary of the invention
The present invention makes for solving relevant issues, and its main target problem is the exhaust gas analysis system of the workability that a kind of assembling and all can guaranteeing in the situation when installing and when changing gas sensor in the processes such as maintenance etc. in the early stage is provided is satisfied with.
Namely, exhaust gas analysis system according to the present invention is a kind ofly to be inserted in gas outlet and the waste gas of this gas outlet of flowing through is taken a sample and analyzed the device of specific gas componant, it is characterized in that, have the gas sensor that detects the special component in the described waste gas and the sleeve that described gas sensor is contained in inside, wherein, described sleeve is by main body and can be consisted of by being bolted in the cap shape parts that this main body installs, and constitutes by described cap shape parts are spirally connected and be incorporated into main body so that described gas sensor is fixed in the sleeve by cap shape parts and main body clamping.
According to this device, owing to being incorporated into main body and gas sensor can being fixed in the sleeve as long as the cap shape parts of sleeve being spirally connected, the workability of changing and assembling is significantly improved, simultaneously owing to be a kind of these single comparatively large-scale parts of cap shape parts to be bolted in the structure of main body, it is sticking therefore also to be difficult for the burning that occurs under the high temperature.And, in the outside circumference of cap shape parts be provided for the being spirally connected planar portions of combination, just can avoid easily the inconvenience that cap shape parts can not be taken out because being infected with coal smoke.
Also have, so-called gas outlet refers to also comprise chimney and so on for the pipe from the combustor combustion gas here.
When described gas sensor is to have for detection of the sensor main body of the sense mechanism of special component and be installed on integratedly the sensor at the top of this sensor main body a kind of comprising, and be to constitute when making described top be held between cap shape parts and the main body, because its holding force can not directly act on sensor main body, therefore can prevent in advance the hidden danger that sense mechanism breaks down, also can improve thermal insulation by sensor main body is inserted body interior, and improve measuring accuracy.
In order to carry out reliably the location of gas sensor, the taper surface that tilts of the advance and retreat axis direction when the bearing surface of the bearing surface of cap shape parts and gas sensor or main body and gas sensor forms with respect to being spirally connected of cap shape parts preferably, and so that when cap shape parts are incorporated into main body, carry out gas sensor with respect to the location of the direction vertical with described advance and retreat axis by the effect of described taper surface.
When described main body roughly is cylindric, and be formed with for the insert port of inserting gas sensor at leading section, and described cap shape parts roughly are cylindric, have the external diameter roughly the same with described main body, described cap shape parts are spirally connected under the state of the leading section that is incorporated into main body, when the outside circumference of cap shape parts and the outside circumference of main body roughly are positioned at same, be installed on gas outlet or unload from gas outlet when both can avoid sleeve to be impeded inconvenience, can reduce the position that may be infected with more coal smoke again.
The present invention according to formation like this, owing to being incorporated into main body and gas sensor can being fixed in the sleeve as long as the cap shape parts of sleeve being spirally connected, the workability of changing and assembling is significantly improved, simultaneously owing to be a kind of structure that these single comparatively large-scale parts of cap shape parts is bolted in main body, therefore the burning that also is difficult for occuring under the high temperature is glued, and the inconvenience that can not take out because being infected with coal smoke can not occur yet.
Description of drawings
Fig. 1 is the overall perspective view according to the exhaust gas analysis system of an embodiment of the invention.
Fig. 2 also represents the decomposition longitudinal diagram of assembling sequence for the state that under the same embodiment of expression the each several part of probe unit decomposed the time.
Fig. 3 is the decomposition longitudinal diagram for the assembling sequence that represents probe unit under the same embodiment.
Fig. 4 is the decomposition longitudinal diagram for the assembling sequence that represents probe unit under the same embodiment.
Fig. 5 also represents the longitudinal diagram of assembling sequence when being used for representing the inner structure of probe unit under the same embodiment.
Fig. 6 is the A section enlarged drawing among Fig. 5.
Symbol description:
100: exhaust gas analysis system 3: gas sensor
4b: insert port 4: main body
5: cap shape parts 2: sleeve
32: sensor main body 33: top
8a, 8b: taper surface
Embodiment
Below, with reference to the embodiment of description of drawings according to exhaust gas analysis system of the present invention.
For example to be installed on boats and ships to be used for analyzing the special component that waste gas that section within it flows contains (NO for example with the gas outlet of engine according to the exhaust gas analysis system 100 of present embodiment
x, SO
x, C0
2, CO etc.) direct insert type device.
Particularly, as shown in Figure 1, this device has: have the probe unit 1 for detection of the sensor main body 32 that goes out described special component in inside; Reception comes from the detection signal of this probe unit 1 and analysis package is contained in the analytic unit (not shown) of the special component in the waste gas; Installation portion 6 for the flange-like that is fixed to gas outlet.This exhaust gas analysis system 100 is being installed under the state of gas outlet, is making it to constitute the leading section of outstanding probe unit 1 in this gas outlet.
In view of present embodiment is characterised in that probe unit 1, so following probe unit 1 is elaborated.
This probe unit 1 has: it is cylindric and be formed with for the sleeve 2 that imports the gas entrance hole 2a of waste gas to inside at its front end face to be major axis; The maintained gas sensor 3 in the inside of this sleeve 2.
As shown in Figure 2, sleeve 2 has: be the main body 4 of the major axis shape of double pipe structure; The cap shape parts 5 that can be bolted in the leading section of this main body 4 and install.
As shown in Figure 2, main body 4 is constituted as: form the air layer as thermofin by making it to have the double pipe structure between outer tube 41 and inner tube 42, be not subject to as far as possible extraneous thermal effect so that be contained in the gas sensor 3 of inner tube 42.Engage integratedly the circular sealing plate material 43 that is useful on the opening between sealed outer pipe 41 and the inner tube 42 by welding etc. on the front end of this main body 4, and the medium pore 4b of this sealing plate material 43 is used as the insert port in the base end part insertion inner tube 42 of following gas sensor 3.
As shown in Figure 2, cap shape parts 5 are to have being minor axis cylindrical portion 51 cylindraceous and being arranged at the parts that the front end-plate 52 of rounded shape of the front end of cylindrical portion 51 forms as one of the external diameter identical with main body 4, and the described gas entrance hole 2a of toroidal runs through the central authorities of described front end-plate 52.And constitute: the base end part inner peripheral surface of cylindrical portion 51 is provided with internal thread part 51b, so that can be by this internal thread part 51b is bolted in the external thread part 4a of the leading section outer peripheral face that is arranged at described main body 4 and cap shape parts 5 are installed on main body 4.
At this, for these cap shape parts 5 are incorporated into main body 4, are provided with integratedly on the described front end-plate 52 for what cooperate the combination tool such as spanner and for example are the tabular instrument auxiliary section 53 of square.
As shown in Figure 2, gas sensor 3 has: cylindrical sensor main body 32 roughly; The top 33 that is embedded in the leading section of this sensor main body 32 outward and is fixed.
The base end part inside of sensor main body 32 contains not shown sensor element or sensing structure, and leading section is provided with for the gas inflow entrance 3b that guides waste gas to the sensor element of inside.Also have, represent for the cable that transmits sensing signal to described analytic unit from the extended symbol C of the base end part of sensor main body 32.And symbol 34 is nut portions of using when sensor main body 32 is incorporated into top 33.
Top 33 be by have ratio sensor main body 32 also the cylindric large-diameter portion 33a of large external diameter and the minor diameter part 33b that is arranged at integratedly the front of this large-diameter portion 33a consist of, its central authorities are provided with the sensor retaining hole 33c that connects along axis direction.It constitutes: the base end part of this sensor retaining hole 33c is formed with internal thread 32a, and the external thread 32b of the outer peripheral face by will being arranged at sensor main body 32 is spirally connected and is incorporated into this internal thread 32a, makes these top 33 outer build-ins due to the leading section of sensor main body 32.According to this structure, when carrying out replacing sensor, if top 33 is unloaded from main body 4, the sensor main body 32 that then is fixed in top 33 also can be pulled out simultaneously, therefore can shorten the required time of changing.And the leading section outer peripheral face of minor diameter part 33b is formed with the external thread 331 of the following filtrator installing ring 9 that is spirally connected.Outer peripheral face at minor diameter part 33b forms grooving, in order to can utilize the fixed top 33 such as spanner, thus so that more be easy to top 33 is separated with sensor main body 32 during emat sensor.
Next the assemble method of the relevant probe unit 1 that consists of described.
At first, such as Fig. 2, shown in Figure 3, the insert port 4b of the leading section by being arranged at main body 4 inserts inner tubes 42 with gas sensor 3.At this moment, be that the surperficial 8c of sealing plate material 43 arranges not shown liner at the front end face of main body 4, the top cardinal extremity face 8d of gas sensor 3 is connected to this liner, and, the outstanding pipe L2a that is formed at the gas lead-in path L2 of gas sensor 3 is embedded in the gas lead-in path L1 of main body 4, only the base end part of sensor main body 32 inserts inner tube 42, and 33 at top is disposed at the axial outside of main body 4.
And, as shown in Figure 4, be spirally connected and cap shape parts 5 are installed on main body 4 by the external thread part 4a with the internal thread part 51b of cap shape parts 5 and main body 4, and in this process, gas sensor 3 is fixed in sleeve 2 by cap shape parts 5 with main body 4 clampings.
More specifically describe.In cap shape parts 5, be provided with on the base end part inner peripheral surface of its gas entrance hole 2a and form along with becoming the first large all-round taper surface 8b towards its internal diameter of base end side, on the other hand in top 33, be provided with on the base end part of minor diameter part 33b and form along with becoming the second large all-round taper surface 8a towards its external diameter of base end side.And, if cap shape parts 5 are spirally connected and be incorporated into main body 4, then described all- round taper surface 8a, 8b are docking together, thereby top 33 pressing pasters are invested main body 4 sides, simultaneously by contacting the power radially that produces with the location positioning at top 33 central axes for its central axis and main body 4 because of taper surface 8a, 8b this moment.
By like this, top 33 is held between the front end face 8c of the first all-round taper surface 8b of cap shape parts 5 and main body 4, thereby makes gas sensor 3 be fixed in sleeve 2.
Next, as shown in Figure 5, the leading section of 33 sensor retaining hole 33c embeds the filter component F of toroidal at the top.And filter component F is unlikely to come off in order to make, and filtrator installing ring 9 is bolted in the external thread 331 of the leading section that is arranged on top 33.
When adopting this formation, as long as be spirally connected and be incorporated into main body 4 and gas sensor 3 can be fixed in the sleeve 2 owing to assembling sleeve 2 required cap shape parts 5, therefore with under the prior art use a plurality of screw installing gas sensors 3 to compare, the replacing of gas sensor 3 and the workability of assembling significantly improve.This effect becomes particularly remarkable in the situation relatively poor such as the workability of gas outlet of boats and ships and so on.
And, owing to be the structure that cap shape parts 5 these single comparatively large-scale parts is bolted in main body 4, therefore be not easy to cause that the burning under the high temperature that produces in the gas outlet such as boats and ships is sticking, again owing to do not use the parts such as screw, therefore do not occur to be infected with coal smoke on its screw terminal and the inconvenience that can not take out yet.
And because cap shape parts 5 are identical with main body 4 external diameters, its outside circumference constitutes same, and therefore when being installed on gas outlet or unloading from gas outlet, the inconvenience that both can avoid sleeve 2 quilts to be impeded also can reduce the position that may be infected with more coal smoke.
And then, can also obtain making gas sensor 3 in the effect that radially also can position by taper surface 8a, 8b.
And, can will purify air by 33 inside, top and calibration gas is sent into gas lead-in path L1, the L2 of gas sensor 3 from main body 4 owing to be provided with in the present embodiment, and will give prominence to pipe L2a and insert gas lead-in path L1, therefore gas sensor 3 can not rotate, yet when fixed gas sensor 3, constitute and only make cap shape parts 5 rotation and gas sensor 3 self needn't rotate, thereby can prevent the situation of cable C kink and so on.
Also have, the present invention is not limited to above-mentioned embodiment.
For example, taper surface and nonessential setting the, and arranging in the situation of taper surface, so long as the bearing surface between cap shape parts and main body and gas sensor, just might as well be with the set positions of taper surface in any place.For example also can taper surface be set at the bearing surface of main body and gas sensor.And, also can be with the both sides of bearing surface all as taper surface and only with a square taper surface that becomes.
Be bolted in the leading section outer peripheral face of main body although constitute the outer embedding of cap shape parts in the above-mentioned embodiment, yet also can constitute the base end part outer peripheral face that main body is embedded in cap shape parts outward.
And, though do not illustrate, can import ambient atmos to outer tube and the space between the inner tube of main body by constituting, thus can after effect of heat insulation, obtain cooling effect.
In addition, the present invention is not limited to above-mentioned embodiment, can in addition various distortion in the scope that does not break away from its aim.
Claims (8)
1. exhaust gas analysis system, it is characterized in that, be inserted in gas outlet and the waste gas of this gas outlet of flowing through is analyzed, this exhaust gas analysis system has the gas sensor that detects the special component in the described waste gas and described gas sensor is contained in inner sleeve
Wherein, described sleeve consists of by main body and by being bolted in the cap shape parts that this main body installs, and constitutes by described cap shape parts are spirally connected and be incorporated into main body so that described gas sensor is fixed in the sleeve by cap shape parts and main body clamping.
2. exhaust gas analysis system as claimed in claim 1, it is characterized in that, described gas sensor comprises having for detection of the sensor main body of the sense mechanism of special component and be installed on integratedly the top of this sensor main body, and constitutes described top is held between cap shape parts and the main body.
3. exhaust gas analysis system as claimed in claim 1 or 2, it is characterized in that, the taper surface that advance and retreat axis direction when forming with respect to being spirally connected of cap shape parts on the bearing surface of the bearing surface of cap shape parts and gas sensor or main body and gas sensor is tilted, and when cap shape parts are incorporated into main body, carry out gas sensor with respect to the location of the direction vertical with described advance and retreat axis by the effect of described taper surface.
4. exhaust gas analysis system as claimed in claim 1 or 2, it is characterized in that, it is cylindric that described main body roughly is, and be formed be used to the insert port of inserting described gas sensor at leading section, and described cap shape parts roughly are cylindric, have the external diameter roughly the same with described main body, described cap shape parts are spirally connected and are incorporated into the leading section of main body and make the outside circumference of its outside circumference and main body roughly be positioned at same.
5. a probe unit is characterized in that, is inserted in gas outlet and the waste gas of this gas outlet of flowing through is analyzed, and this probe unit has the gas sensor that detects the special component in the described waste gas and described gas sensor is contained in inner sleeve,
Wherein, described sleeve consists of by main body and by being bolted in the cap shape parts that this main body installs, and constitutes by described cap shape parts are spirally connected and be incorporated into main body so that described gas sensor is fixed in the sleeve by cap shape parts and main body clamping.
6. probe unit as claimed in claim 5, it is characterized in that, described gas sensor comprises having for detection of the sensor main body of the sense mechanism of special component and be installed on integratedly the top of this sensor main body, and constitutes described top is held between cap shape parts and the main body.
7. such as claim 5 or 6 described probe units, it is characterized in that, the taper surface that advance and retreat axis direction when forming with respect to being spirally connected of cap shape parts on the bearing surface of the bearing surface of cap shape parts and gas sensor or main body and gas sensor is tilted, and when cap shape parts are incorporated into main body, carry out gas sensor with respect to the location of the direction vertical with described advance and retreat axis by the effect of described taper surface.
8. such as claim 5 or 6 described probe units, it is characterized in that, it is cylindric that described main body roughly is, and be formed be used to the insert port of inserting described gas sensor at leading section, and described cap shape parts roughly are cylindric, have the external diameter roughly the same with described main body, described cap shape parts are spirally connected and are incorporated into the leading section of main body and make the outside circumference of its outside circumference and main body roughly be positioned at same.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012092494A JP2013221805A (en) | 2012-04-13 | 2012-04-13 | Exhaust gas analyzer and probe unit |
| JP2012-092494 | 2012-04-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103376306A true CN103376306A (en) | 2013-10-30 |
Family
ID=49461743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100792114A Pending CN103376306A (en) | 2012-04-13 | 2013-03-13 | Exhaust gas analyzer and probe unit |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2013221805A (en) |
| KR (1) | KR20130116168A (en) |
| CN (1) | CN103376306A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931610A (en) * | 2017-05-24 | 2018-12-04 | 株式会社堀场制作所 | Probe device, exhaust gas analyzer and modification method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6470037B2 (en) * | 2014-12-25 | 2019-02-13 | オリエンタルエンヂニアリング株式会社 | Oxygen sensor calibration system and oxygen sensor calibration method |
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| CN201611283U (en) * | 2009-12-29 | 2010-10-20 | 上海乐春重工机电设备有限公司 | Temperature sensor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931610A (en) * | 2017-05-24 | 2018-12-04 | 株式会社堀场制作所 | Probe device, exhaust gas analyzer and modification method |
| CN108931610B (en) * | 2017-05-24 | 2022-06-21 | 株式会社堀场制作所 | Probe apparatus, exhaust gas analyzing apparatus, and correction method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013221805A (en) | 2013-10-28 |
| KR20130116168A (en) | 2013-10-23 |
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