CN113504183B - Flue gas on-line measuring device capable of effectively protecting measuring unit - Google Patents
Flue gas on-line measuring device capable of effectively protecting measuring unit Download PDFInfo
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- CN113504183B CN113504183B CN202110769466.8A CN202110769466A CN113504183B CN 113504183 B CN113504183 B CN 113504183B CN 202110769466 A CN202110769466 A CN 202110769466A CN 113504183 B CN113504183 B CN 113504183B
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title abstract description 14
- 239000003546 flue gas Substances 0.000 title abstract description 13
- 238000005070 sampling Methods 0.000 claims abstract description 120
- 238000005259 measurement Methods 0.000 claims abstract description 35
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 239000000779 smoke Substances 0.000 claims abstract description 15
- 238000001914 filtration Methods 0.000 claims description 21
- 238000003780 insertion Methods 0.000 claims description 18
- 230000037431 insertion Effects 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 abstract description 4
- 238000010168 coupling process Methods 0.000 abstract description 4
- 238000005859 coupling reaction Methods 0.000 abstract description 4
- 238000007664 blowing Methods 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 206010040007 Sense of oppression Diseases 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
-
- 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
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
-
- 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
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Combustion & Propulsion (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The application discloses can effectively protect measuring unit's flue gas on-line measuring device, including the control unit, sampling unit and measurement room, the measurement room has the aspiration pump through first tube coupling, the measurement room has the blowback pump through the second tube coupling, measurement room department has the measuring unit, the sampling unit includes first mounting panel and installs in the three hard pipy sampling head of first mounting panel department, and every sampling head is connected with the measurement room through a sampling pipeline, sampling pipeline department has the valve. The detection device can detect the smoke more accurately in an all-round mode, and can conduct blowback protection on the measurement unit.
Description
Technical Field
The application relates to the field of flue gas detection, in particular to a flue gas online detection device capable of effectively protecting a measurement unit.
Background
Flue gas is a mixture of gas and smoke dust and is the main cause of atmospheric pollution in residential areas. The components of the flue gas are complex, the gas comprises water vapor, sulfur dioxide, nitrogen, oxygen, carbon monoxide, carbon dioxide, hydrocarbons, nitrogen oxides and the like, and the smoke comprises ash, coal particles, oil drops, pyrolysis products and the like of the fuel. All need detect the composition of flue gas in the production process of mill to confirm whether qualified the flue gas, could discharge to the atmosphere, because the dust content in the flue gas is big, after utilizing check out test set to detect an end time, often can be because the jam that solid particle, dust etc. caused, thereby make the unable normal use of check out test set, and a large amount of dusts can damage check out test set or cause the check out test set to measure inaccurately in time to clear up.
Disclosure of Invention
The purpose of the invention is as follows: the application aims at overcoming the defects of the prior art and provides the smoke online detection device capable of effectively protecting the measurement unit.
The technical scheme is as follows: the utility model provides a can effectively protect measuring unit's flue gas on-line measuring device, includes the control unit, sampling unit and measuring chamber, the measuring chamber is connected with the aspiration pump through first tube coupling, the measuring chamber is connected with the blowback pump through the second tube coupling, measuring chamber department has the measuring unit, the sampling unit includes first mounting panel and installs in the three hard pipy sampling head of first mounting panel department, and every sampling head is connected with the measuring chamber through a sampling pipeline, sampling pipeline department has the valve.
Furthermore, a through groove is formed in the first mounting plate, a strip-shaped second mounting plate is mounted at the through groove, a first motor, a first bearing, a strip-shaped sliding rail and a first sliding block are arranged at the second mounting plate, a first lead screw is connected between the first motor and the first bearing, and the first sliding block is provided with a sliding groove matched with the strip-shaped sliding rail and a first threaded hole matched with the first lead screw; the first sliding block is provided with a second motor and a polished rod, the second motor is provided with a second lead screw, the second lead screw is provided with a second sliding block, the second sliding block is provided with a second threaded hole matched with the second lead screw and a smooth hole matched with the polished rod, the second sliding block is provided with a first L-shaped connecting arm, the end part of the first L-shaped connecting arm is fixedly provided with a second L-shaped connecting arm, the second L-shaped connecting arm is provided with a third motor, the third motor is provided with a driving head, and the driving head comprises a frustum-shaped part; the three sampling heads are cylindrical pipes, the end parts of the sampling heads are provided with filtering units, the filtering units are cylindrical and comprise annular plates, circular filtering nets and side filtering nets which are connected with the annular plates and the circular filtering nets and are in the shape of circular columns, the end parts of the sampling heads are fixed with second bearings, the inner rings of the second bearings are fixed with the outer sides of the sampling heads, the outer rings of the second bearings are fixed with annular mounting plates, a plurality of springs are connected between the annular mounting plates and the annular plates, one sides, away from the annular mounting plates, of the annular plates are further fixed with limiting insertion rods, the outer rings of the second bearings are provided with limiting convex ribs, the annular plates are provided with limiting grooves matched with the limiting convex ribs, the annular plates can slide along the limiting convex ribs, the sampling heads are further fixed with annular limiting plates, and the annular limiting plates are provided with a plurality of limiting insertion holes, the limiting inserted rod can be inserted into the limiting insertion hole; the round filter screen is provided with a driven head, the driven head is provided with a frustum-shaped groove matched with the frustum-shaped part of the driving head, bristles are arranged on the inner side of the first L-shaped connecting arm, and when the driven head of the driving head at the third motor is abutted to a certain filter unit and drives the filter unit to rotate, the bristles at the first L-shaped connecting arm clean the round filter screen and the side filter screen.
Furthermore, the strip-shaped slide rail and the first slide block are provided with two sliding grooves; the smooth holes of the polish rod and the second sliding block are both provided with two smooth holes. Thereby making the movement of the first slider and the second slider more stable.
Furthermore, 4 limit inserted rods which are distributed annularly at equal intervals are fixed at each circular annular plate; more than 16 limiting jacks distributed at equal intervals in a ring shape are arranged at the ring-shaped limiting plate; the number of the limiting jacks at the annular limiting plate is integral multiple of the number of the limiting insertion rods at the annular plate; the outer ring of each second bearing is provided with 4 limiting convex ribs which are distributed in an annular equal interval mode, and each circular annular plate is provided with 4 limiting grooves which are distributed in an annular equal interval mode. Thereby more accurate stability to filter element's spacing.
Furthermore, the three sampling heads are respectively a first sampling head, a second sampling head and a third sampling head, the first sampling head is connected with the measuring chamber through a first sampling pipeline, and a first valve is arranged at the first sampling pipeline; the second sampling head is connected with the measuring chamber through a second sampling pipeline, and a second valve is arranged at the second sampling pipeline; the third sampling head is connected with the measuring chamber through a third sampling pipeline, and a third valve is arranged at the third sampling pipeline; the length of the first sampling head is greater than that of the second sampling head, and the length of the second sampling head is greater than that of the third sampling head. Therefore, the first sampling head, the second sampling head and the third sampling head are distributed at different heights and different radial distances, so that the sampling measurement is more comprehensive and accurate.
Furthermore, the measuring chamber is also connected with a pressure relief pipeline, and a fourth valve is arranged at the pressure relief pipeline; the first pipeline is provided with a first electromagnetic valve, and the second pipeline is provided with a second electromagnetic valve; the circular filter screen is close to one side of sampling head and installs the axis of rotation, axis of rotation department installs the commentaries on classics leaf.
Further, the outer circumference department of ring shape board has the anti-skidding coating, second slider department installs touching sensing unit and mount pad, touching sensing unit includes first electric putter and the pressure sensor who is located first electric putter tip, mount pad department installs second electric putter, first push pedal is installed to second electric putter's expansion end, and first push pedal has the second push pedal through the articulated second that has that elastic reset hinge part articulates, and when no external force, first push pedal and second push pedal are perpendicular, second push pedal department installs the live-rollers that can butt the outer circumference of ring shape board.
Further, the measuring unit comprises a light emitter at one side of the measuring chamber and a light receiver at the other side of the measuring chamber. Therefore, the measurement of smoke components is realized in an optical measurement mode.
Further, the second sliding block is provided with an inverted U-shaped protective cover for protecting the pressure sensor. Thereby providing a degree of protection for the pressure sensor.
Further, the two arms of the first L-shaped connecting arm are perpendicular.
Further, the two arms of the second L-shaped connecting arm are perpendicular.
Further, the first L-shaped connecting arm is provided with bristles at two arms.
Further, each annular mounting plate is provided with 4 springs which are distributed in an annular and equally-spaced mode.
Furthermore, the limiting insertion hole is circular, and the limiting insertion rod is cylindrical.
Has the advantages that: the detection device can realize sampling of smoke with different heights and different radial distances in the flue, and can detect for multiple times, so that detection data are more comprehensive and accurate, better blowback effect can be obtained when blowback is performed, and the filter unit can be better cleaned.
Drawings
FIG. 1 is a schematic diagram of a sampling unit;
FIG. 2 is a schematic view of a detection apparatus;
FIG. 3 is a schematic diagram of a sampling unit during normal sampling;
FIG. 4 is a schematic illustration of the cleaning of the filter unit at the first sampling head;
FIG. 5 is a schematic diagram of the first filter unit with the limiting inserted rod abutting against the annular limiting plate without resetting in time;
FIG. 6 is an enlarged view of area A;
FIG. 7 is a schematic diagram of a touch sensing unit before detection is ready for use;
FIG. 8 is an enlarged view of area B;
fig. 9 is a schematic view of a filter unit rotated by a rotating roller.
Detailed Description
Reference numerals: 1 a first sampling head; 1.1 a first sampling pipe; 1.2 a first valve; 2 a second sampling head; 2.1 a second sampling line; 2.2 a second valve; 3 a third sampling head; 3.1 a third sampling pipeline; 3.2 a third valve; 4 a second mounting plate; 4.1 a first screw rod; 4.2 a strip-shaped slide rail; 4.3 first slide block; 5.1 a second screw rod; 5.2 a polish rod; 5.3 a second slide block; 6.1 mounting seats; 6.2 a second electric push rod; 6.3 first push plate; 6.4 second push plate; 6.5 rotating the roller; 6.6 touching the sensing unit; 6.7 an inverted U-shaped protective cover; 7.1 a first L-shaped linking arm; 7.2 a second L-shaped connecting arm; 7.3 a third motor; 7.4 driving the head; 8, a filtering unit; 8.1 circular ring shaped plate; 8.2 side filter screen; 8.3 circular filter screen; 8.4 non-slip coating; 8.5 a second bearing; 8.6 annular mounting plate; 8.7 a spring; 8.8 limiting convex ribs; 8.9 limiting inserted rods; 8.10 passive head; 8.11 rotating the shaft; 8.12 leaf rotation; 9 annular limiting plates; 9.1 limiting the jacks; 10 a first mounting plate; 11 a pressure relief line; 11.1 a fourth valve; 12 a measurement chamber; 13 an optical receiver; 1.4 light emitters; 15 air pump; 15.1 a first conduit; 16 a back-flushing pump; 16.1 second line.
As shown in the figure: the utility model provides a can effectively protect measuring unit's flue gas on-line measuring device, includes the control unit, sampling unit and measuring chamber 12, measuring chamber 12 is connected with aspiration pump 15 through first pipeline 15.1, measuring chamber 12 is connected with blowback pump 16 through second pipeline 16.1, measuring chamber 12 department has the measuring unit, the sampling unit includes first mounting panel 10 and installs in the hard pipy sampling head 1, 2, 3 of three of first mounting panel 10 department, and every sampling head is connected with measuring chamber 12 through a sampling pipeline, sampling pipeline department has the valve. A through groove is formed in the first mounting plate 10, a strip-shaped second mounting plate 4 is mounted at the through groove, a first motor, a first bearing, a strip-shaped sliding rail and a first sliding block are arranged at the second mounting plate 4, a first lead screw 4.1 is connected between the first motor and the first bearing, and the first sliding block is provided with a sliding groove matched with the strip-shaped sliding rail 4.2 and a first threaded hole matched with the first lead screw 4.1; a second motor and a polished rod 5.2 are installed at the position of 4.3 of the first sliding block, a second lead screw 5.1 is installed at the position of the second motor, a second sliding block 5.3 is arranged at the position of 5.1 of the second lead screw, a second threaded hole matched with the second lead screw 5.1 and a smooth hole matched with the polished rod 5.2 are formed in the position of 5.3 of the second sliding block, a first L-shaped connecting arm 7.1 is installed at the position of 5.3 of the second sliding block, a second L-shaped connecting arm 7.2 is fixed at the end part of the first L-shaped connecting arm 7.1, a third motor 7.3 is installed at the position of 7.2 of the second L-shaped connecting arm, a driving head 7.4 is installed at the position of 7.3 of the third motor, and the driving head 7.4 comprises a frustum-shaped part; the three sampling head is cylindrical tubulose, filter unit 8 is installed to the tip of sampling head, filter unit is cylindrical, including annular plate 8.1, circular filter screen 8.3 and the side filter screen 8.2 of the annular column shape of connecting annular plate 8.1 and circular filter screen 8.3, the end fixing of sampling head has second bearing 8.5, and second bearing 8.5's inner circle is fixed with the outside of sampling head, and second bearing 8.5's outer lane is fixed with annular mounting panel 8.6, annular mounting panel 8.6 with be connected with a plurality of springs 8.7 between the annular plate 8.1, one side that annular mounting panel 8.6 was kept away from to annular plate 8.1 still is fixed with spacing inserted bar 8.9, second bearing 8.5's outer lane department has spacing protruding muscle 8.8, annular plate 8.6 department have with spacing recess of spacing protruding muscle 8.8 complex, annular plate 8.6 can slide along spacing protruding muscle 8.8, an annular limiting plate 9 is further fixed at the sampling head, a plurality of limiting jacks 9.1 are formed in the annular limiting plate 9, and the limiting insertion rods 8.9 can be inserted into the limiting jacks 9.1; round filter net 8.3 department still installs passive head 8.10, passive head 8.10 department have with the frustum shape recess of the frustum shape part complex of drive head 7.4, the inboard of first L shape linking arm 7.1 has the brush hair, and when the driven head of the drive head butt of third motor department certain filter unit department drove this filter unit and rotates, the brush hair of first L shape linking arm 7.1 department cleared up round filter net and side filter screen.
The strip-shaped slide rail 4.2 and the first slide block 4.3 are provided with two slide grooves; the smooth holes of the polish rod 5.2 and the second slider 5.3 are both two. Each circular ring plate is fixed with 4 limit inserted rods 8.9 which are distributed in a ring shape at equal intervals; more than 16 limiting jacks 9.1 which are distributed at equal intervals in a ring shape are arranged at the ring-shaped limiting plate 9; the number of the limiting jacks 9.1 at the annular limiting plate 9 is integral multiple of the number of the limiting inserted rods 8.9 at the annular plate 8.1; the outer ring of each second bearing 8.5 is provided with 4 limit convex ribs 8.8 which are distributed in an annular equal interval, and the 8.1 part of each circular annular plate is provided with 4 limit grooves which are distributed in an annular equal interval. The three sampling heads are respectively a first sampling head 1, a second sampling head 2 and a third sampling head 3, the first sampling head 1 is connected with the measuring chamber 12 through a first sampling pipeline 1.1, and a first valve 1.2 is arranged at the first sampling pipeline 1.1; the second sampling head 2 is connected with the measuring chamber 12 through a second sampling pipeline 2.1, and a second valve 2.2 is arranged at the second sampling pipeline 2.1; the third sampling head 3 is connected with the measuring chamber 12 through a third sampling pipeline 3.1, and a third valve 3.2 is arranged at the third sampling pipeline 3.1; the length of the first sampling head 1 is larger than that of the second sampling head 2, and the length of the second sampling head 2 is larger than that of the third sampling head 3.
The measuring chamber 12 is also connected with a pressure relief pipeline 11, and a fourth valve 11.1 is arranged at the pressure relief pipeline 11; a first electromagnetic valve is arranged at the first pipeline 15.1, and a second electromagnetic valve is arranged at the second pipeline 16.1; one side of the circular filter screen close to the sampling head is provided with a rotating shaft 8.11, and the rotating blade 8.12 is arranged at the rotating shaft 8.11. The outer circumference department of ring shape board 8.1 has anti-skid coating 8.4 (anti-skid coating is the circle annular belt), second slider 5.3 department installs touching sensing unit 6.6 and mount pad 6.1, touching sensing unit 6.6 includes first electric putter and the pressure sensor who is located first electric putter tip, mount pad 6.1 department installs second electric putter 6.2, first push pedal 6.3 is installed to second electric putter 6.2's expansion end, and first push pedal 6.3 articulates through elasticity reset hinge joint part has second push pedal 6.4, and when no external force, first push pedal 6.3 is perpendicular with second push pedal 6.4, second push pedal 6.4 department installs can butt the outer circumference of ring shape board rotation roller 6.5. The measuring unit comprises a light emitter 14 on one side of the measuring chamber 12 and a light receiver 13 on the other side of the measuring chamber 12.
As shown in the drawing, the first sampling head, the second sampling head and the third sampling head are positioned at different heights and different radial depths in the flue, so that the flue gas at different positions of the flue can be collected to be measured, and more accurate and comprehensive measurement is realized. Specifically, when the first sampling head is adopted for measurement, the second valve, the third valve, the fourth valve and the second electromagnetic valve are all closed, the first valve and the air suction pump are opened, air is continuously sucked, the measuring chamber is filled with smoke, and then the smoke in the measuring chamber is measured by the measuring unit. When the second sampling head is used for measurement, the first valve, the third valve, the fourth valve and the second electromagnetic valve are closed, and the second valve and the air pump are opened to pump air. When the third sampling head is used for measurement, the first valve, the second valve, the fourth valve and the second electromagnetic valve are closed, and the third valve and the air pump are opened for air suction.
When clearing up the filter unit, as shown in the figure, because the existence of first motor and second motor, can be so that first L shape linking arm is located first filter unit, second filter unit or third filter unit department, for example when clearing up first filter unit, make the drive head support tight first filter unit's passive head, because the oppression of drive head this moment, make the filter unit take place the displacement of sampling head length direction, make spacing inserted bar break away from spacing jack, as shown in fig. 4, the filter unit can rotate, the first filter unit of drive head drive rotates, thereby the first filter unit of brush hair clearance of first L shape linking arm department. The second filter unit and the third filter unit can be cleaned in the same procedure. Under the condition that does not need the clearance, spacing inserted bar inserts in the spacing jack to the unable rotation of filter unit.
After the three filter units are cleaned by the bristles, the first valve, the second valve, the third valve and the fourth valve are opened, the first electromagnetic valve is closed, the second electromagnetic valve is opened, and the back flushing pump is used for pumping high-pressure air flow. At the moment, because the first valve, the second valve, the third valve and the fourth valve are all opened, the airflow coming out from the single sampling head is not particularly strong, but the airflow is enough to drive the rotating blade to enable the filtering unit to rotate, and if the limiting inserted rod of the filtering unit is inserted into the limiting inserted hole at the moment, the filtering unit cannot rotate due to the limitation of the first valve, the second valve, the third valve and the fourth valve. If spacing inserted bar does not insert spacing jack but the butt live ring limiting plate as shown in fig. 5, then the leaf that changes can drive the filter unit rotation under the condition of receiving the wind to make the filter unit take place the rotation of small amplitude, make spacing inserted bar insert in spacing jack (set up the purpose of a lot of spacing jacks, just be in order to make the filter unit only need rotate very little amplitude and just can realize the cooperation of spacing inserted bar and spacing jack). After the step, when each filtering unit is respectively subjected to back blowing cleaning, for example, when the first filtering unit is subjected to back blowing cleaning, the first valve is opened, the second valve, the third valve and the fourth valve are closed, and a back blowing pump is used for back blowing cleaning, so that the airflow pressure is high, and the back blowing effect on the sampling head and the filtering units is good. When the measurement chamber needs to be cleaned by independent back blowing, the fourth valve is opened, the first valve, the second valve and the third valve are closed, and a back blowing pump is used for cleaning.
Normally, the integral back blowing of the first sampling head, the second sampling head and the third sampling head can enable the limit insertion rod which is not inserted into the limit insertion hole to be inserted into the limit insertion hole, but if further confirmation is needed. The touch sensor unit and the rotating roller may be provided. If the limiting insertion rod is inserted into the limiting insertion hole, the pressure sensor cannot touch the annular plate along with the extension of the first electric push rod, and therefore it is determined that the limiting insertion rod is inserted into the limiting insertion hole. When the touch sensor touches the circular ring plate, the situation that the limiting inserted rod of the filtering unit is not inserted into the limiting jack is described (because the specifications and the distance of the first, second and third filtering units are known, the detection position of whether the limiting inserted rod of the first, second and third filtering units is inserted into the limiting jack is fixed, and the second sliding block can reach the corresponding position through the driving of the first and second motors), so that the second electric push rod is extended as shown in fig. 9, the second push plate rotates upwards, the rotating roller drives the circular ring plate to rotate, the filtering unit rotates in a small range, the limiting inserted rod is inserted into the limiting jack, and after the limiting rod is inserted into the limiting hole, the circular ring plate is separated from the abutting of the rotating roller, and the rotating roller resets under the elastic force of the elastic hinge component.
While the invention has been shown and described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined in the following claims.
Claims (7)
1. The online smoke detection device capable of effectively protecting the measurement unit is characterized by comprising a control unit, a sampling unit and a measurement chamber, wherein the measurement chamber is connected with an air suction pump through a first pipeline, the measurement chamber is connected with a back flushing pump through a second pipeline, the measurement chamber is provided with the measurement unit, the sampling unit comprises a first mounting plate and three hard tubular sampling heads mounted at the first mounting plate, each sampling head is connected with the measurement chamber through a sampling pipeline, and the sampling pipeline is provided with a valve; the first mounting plate is provided with a through groove, a strip-shaped second mounting plate is mounted at the through groove, the second mounting plate is provided with a first motor, a first bearing, a strip-shaped sliding rail and a first sliding block, a first screw rod is connected between the first motor and the first bearing, and the first sliding block is provided with a sliding groove matched with the strip-shaped sliding rail and a first threaded hole matched with the first screw rod; the first sliding block is provided with a second motor and a polished rod, the second motor is provided with a second lead screw, the second lead screw is provided with a second sliding block, the second sliding block is provided with a second threaded hole matched with the second lead screw and a smooth hole matched with the polished rod, the second sliding block is provided with a first L-shaped connecting arm, the end part of the first L-shaped connecting arm is fixedly provided with a second L-shaped connecting arm, the second L-shaped connecting arm is provided with a third motor, the third motor is provided with a driving head, and the driving head comprises a frustum-shaped part; the three sampling heads are cylindrical pipes, the end parts of the sampling heads are provided with filtering units, the filtering units are cylindrical and comprise annular plates, circular filtering nets and side filtering nets which are connected with the annular plates and the circular filtering nets and are in the shape of circular columns, the end parts of the sampling heads are fixed with second bearings, the inner rings of the second bearings are fixed with the outer sides of the sampling heads, the outer rings of the second bearings are fixed with annular mounting plates, a plurality of springs are connected between the annular mounting plates and the annular plates, one sides, away from the annular mounting plates, of the annular plates are further fixed with limiting insertion rods, the outer rings of the second bearings are provided with limiting convex ribs, the annular plates are provided with limiting grooves matched with the limiting convex ribs, the annular plates can slide along the limiting convex ribs, the sampling heads are further fixed with annular limiting plates, and the annular limiting plates are provided with a plurality of limiting insertion holes, the limiting inserted rod can be inserted into the limiting insertion hole; the round filter screen is provided with a driven head, the driven head is provided with a frustum-shaped groove matched with the frustum-shaped part of the driving head, bristles are arranged on the inner side of the first L-shaped connecting arm, and when the driven head of the driving head at the third motor is abutted to a certain filter unit and drives the filter unit to rotate, the bristles at the first L-shaped connecting arm clean the round filter screen and the side filter screen.
2. The online smoke detection device capable of effectively protecting the measurement unit according to claim 1, wherein the strip-shaped slide rail and the first slide block have two slide grooves; the smooth holes of the polish rod and the second sliding block are provided with two smooth holes.
3. The on-line smoke detection device capable of effectively protecting the measurement unit according to claim 1, wherein 4 limit inserted rods are fixed at each circular annular plate and are distributed in an annular shape at equal intervals; more than 16 limiting jacks distributed at equal intervals in a ring shape are arranged at the ring-shaped limiting plate; the number of the limiting jacks at the annular limiting plate is integral multiple of the number of the limiting insertion rods at the annular plate; the outer ring of each second bearing is provided with 4 annular limit convex ribs distributed at equal intervals, and each circular annular plate is provided with 4 annular limit grooves distributed at equal intervals.
4. The online smoke detection device capable of effectively protecting the measurement unit according to claim 1, wherein the three sampling heads are a first sampling head, a second sampling head and a third sampling head, respectively, the first sampling head is connected with the measurement chamber through a first sampling pipeline, and a first valve is arranged at the first sampling pipeline; the second sampling head is connected with the measuring chamber through a second sampling pipeline, and a second valve is arranged at the second sampling pipeline; the third sampling head is connected with the measuring chamber through a third sampling pipeline, and a third valve is arranged at the third sampling pipeline; the length of the first sampling head is greater than that of the second sampling head, and the length of the second sampling head is greater than that of the third sampling head.
5. The online smoke detection device capable of effectively protecting the measurement unit according to claim 1, wherein the measurement chamber is further connected with a pressure relief pipeline, and a fourth valve is arranged at the pressure relief pipeline; the first pipeline is provided with a first electromagnetic valve, and the second pipeline is provided with a second electromagnetic valve; the circular filter screen is close to one side of sampling head and installs the axis of rotation, axis of rotation department installs the commentaries on classics leaf.
6. The on-line smoke detection device capable of effectively protecting the measurement unit according to claim 1, wherein an anti-slip coating is arranged at the outer circumference of the circular ring plate, a touch sensing unit and a mounting seat are arranged at the second sliding block, the touch sensing unit comprises a first electric push rod and a pressure sensor arranged at the end of the first electric push rod, a second electric push rod is arranged at the mounting seat, a first push plate is arranged at the movable end of the second electric push rod, the first push plate is hinged to a second push plate through an elastic reset hinge part, when no external force is applied, the first push plate and the second push plate are perpendicular, and a rotating roller capable of abutting against the outer circumference of the circular ring plate is arranged at the second push plate.
7. The on-line smoke detection device capable of effectively protecting the measurement unit according to claim 1, wherein the measurement unit comprises a light emitter located at one side of the measurement chamber and a light receiver located at the other side of the measurement chamber.
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| CN202110769466.8A CN113504183B (en) | 2021-07-07 | 2021-07-07 | Flue gas on-line measuring device capable of effectively protecting measuring unit |
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| CN113504183B true CN113504183B (en) | 2022-05-03 |
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| CN115372111A (en) * | 2022-07-15 | 2022-11-22 | 华能辛店发电有限公司 | Extraction type flue gas analysis and treatment system applied to off-sale system |
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