CN110530428B - Controllable gas pollutant detects integration fixed bed - Google Patents
Controllable gas pollutant detects integration fixed bed Download PDFInfo
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- CN110530428B CN110530428B CN201910863106.7A CN201910863106A CN110530428B CN 110530428 B CN110530428 B CN 110530428B CN 201910863106 A CN201910863106 A CN 201910863106A CN 110530428 B CN110530428 B CN 110530428B
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- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 26
- 231100000719 pollutant Toxicity 0.000 title claims abstract description 26
- 230000010354 integration Effects 0.000 title claims description 4
- 238000002156 mixing Methods 0.000 claims abstract description 76
- 238000002485 combustion reaction Methods 0.000 claims abstract description 69
- 238000001514 detection method Methods 0.000 claims abstract description 27
- 238000001816 cooling Methods 0.000 claims abstract description 23
- 239000000919 ceramic Substances 0.000 claims description 63
- 239000010425 asbestos Substances 0.000 claims description 19
- 229910052895 riebeckite Inorganic materials 0.000 claims description 19
- 230000007246 mechanism Effects 0.000 claims description 13
- 238000005452 bending Methods 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 12
- 239000000779 smoke Substances 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 8
- 229920000742 Cotton Polymers 0.000 claims description 7
- 239000010453 quartz Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 104
- 238000010586 diagram Methods 0.000 description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- 239000012494 Quartz wool Substances 0.000 description 6
- 239000003546 flue gas Substances 0.000 description 6
- 238000004321 preservation Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 239000010808 liquid waste Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a controllable gas pollutant detection integrated fixed bed, which comprises a shell, a gas cylinder, a gas mass flowmeter, an electromagnetic valve, a gas mixing device, a tail gas detection device, a tail gas cooling device, a temperature control combustion chamber, a lifting table, a control panel and a controller, wherein the controller and the control panel are fixedly arranged in an inner cavity at one side of the shell, and the gas cylinder, the gas mass flowmeter, the electromagnetic valve, the gas mixing device, the tail gas detection device, the tail gas cooling device, the temperature control combustion chamber and the lifting table are arranged at the other side of the inner cavity of the shell; the gas outlet of the gas cylinder is connected with a gas mass flowmeter, and the gas mass flowmeter is connected with an electromagnetic valve. The integrated fixed bed for detecting the controllable gas pollutants has the advantages of reasonable structure, simple structure, convenient use, good tightness, high intelligent degree and the like, and effectively solves the problem that the conventional detection equipment is inconvenient to use.
Description
Technical Field
The invention relates to the field of gas pollutant detection, in particular to a controllable gas pollutant detection integrated fixed bed.
Background
Combustion is an exothermic and luminous chemical reaction, the reaction process is extremely complex, the chain reaction of free radicals is a combustion reaction, and in the combustion process, momentum, heat and mass transfer are carried out among fuel, oxygen and combustion products, and a large amount of complex gas pollutants are generated, so that the generation of the gas pollutants is closely related to temperature, air components in a combustion environment and the like.
The existing detection equipment is generally difficult to quantify in the construction of a combustion gas environment, a mixing device is not arranged between gases, the mixing degree is low, the temperature control is inaccurate, a combustion object is filled in a ceramic tube, two ends of the combustion object are fixed by quartz wool, the quartz wool burns simultaneously during combustion, the air tightness of the equipment is poor, the problem of inaccurate experimental data is easily caused, and the combustion residues are difficult to ignite due to the quartz wool at the two ends and are troublesome to operate during extraction of the combustion residues.
Disclosure of Invention
The invention aims to solve the technical problems that: in order to overcome the problems in the prior art, the integrated fixed bed for detecting the controllable gas pollutants is provided, has the advantages of reasonable structure, simple structure, convenient use, good tightness, high intelligent degree and the like, and effectively solves the problem that the conventional detection equipment is inconvenient to use.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a controllable gas pollutant detects integration fixed bed, includes casing, gas cylinder, gas mass flowmeter, solenoid valve, gas mixing device, tail gas detection device, tail gas cooling device, accuse temperature combustion chamber, elevating platform, control panel, controller, the casing have unilateral open-ended cavity cuboid structure, fixedly be provided with the controller in the inner chamber of one side of casing, still be equipped with the casing apron on the opening of same side casing, fixedly be provided with control panel on the casing apron;
the gas cylinder, the gas mass flowmeter, the electromagnetic valve, the gas mixing device, the tail gas detection device, the tail gas cooling device, the temperature control combustion chamber and the lifting table are arranged on the other side of the inner cavity of the shell; the gas outlet of the gas cylinder is connected with a gas mass flowmeter, and the gas mass flowmeter is connected with an electromagnetic valve;
the gas mixing device comprises a sealed mixing box, a mixing plate and a mixing pipe, and the inner cavity of the mixing box is respectively communicated with the inner cavities of the electromagnetic valve and the mixing pipe; the mixing pipe comprises a plurality of inner pipes which are spirally and uniformly arranged in the inner cavity of the outer pipe; the mixing plate is a bending plate fixedly arranged on the inner cavity of the mixing box, wherein the bending part of the mixing plate is of a solid structure, through holes are uniformly formed in the part between the bending parts of the mixing plate, and the bending part of the mixing plate is arranged towards the air outlet of the electromagnetic valve;
the temperature control combustion chamber comprises an asbestos heat preservation sleeve, a temperature sensor, a ceramic outer sleeve and a first thermocouple, wherein the asbestos heat preservation sleeve is fixedly arranged in an inner cavity of a shell, the ceramic outer sleeve is sleeved in the inner cavity of the asbestos heat preservation sleeve, the temperature sensor is buried in an inner cavity wall of the ceramic outer sleeve, and the first thermocouple is uniformly paved between the asbestos heat preservation sleeve and the ceramic outer sleeve;
the lifting platform comprises a supporting plate, a plug and a ceramic inner sleeve; the plug is fixedly arranged in the middle of the supporting plate, the lower end of the ceramic inner sleeve is fixedly arranged on the plug, the inner cavity at the lower end of the ceramic inner sleeve is communicated with the mixing pipe through the gas pipe, and a clamping groove with the same radial section pattern as the ceramic outer sleeve is arranged on the plug around the ceramic inner sleeve;
the asbestos thermal insulation sleeve is also provided with a supporting lug along the axial direction, the supporting lug is rotationally provided with a lead screw, one end of the lead screw is in transmission connection with a motor fixedly arranged on the asbestos thermal insulation sleeve, the other end of the lead screw is in threaded connection with the supporting plate, the lead screw drives the upper end of the ceramic inner sleeve to be sleeved into or pulled out of the inner cavity of the ceramic outer sleeve, and when the upper end of the ceramic inner sleeve is sleeved into the inner cavity of the ceramic outer sleeve, the lower end of the ceramic outer sleeve is clamped into the clamping groove;
the tail gas cooling device is connected with the upper end of the ceramic outer sleeve, and the tail gas detection device is connected with the tail gas cooling device.
Further, the tail gas cooling device comprises a cold trap, an inner sleeve and quartz cotton, wherein the inner sleeve is arranged in the inner cavity of the cold trap, the quartz cotton is arranged in the inner cavity of the upper end of the inner sleeve, a smoke emission mechanism is arranged in the middle of the bottom surface of the inner cavity of the inner sleeve, the smoke emission mechanism is made of a metal net coil, and the lower end of the smoke emission mechanism is connected with the upper end of the ceramic outer sleeve through a gas pipe; the cold trap is also provided with a cover plate for simultaneously sealing the openings of the cold trap and the inner sleeve; the tail gas detection device is connected with the upper end of the inner sleeve through a gas pipe.
Further, the bottom of the inner cavity of the inner sleeve is provided with a collecting tank for collecting solid and liquid impurities, and the bottom of the quartz cotton is provided with a spherical structure which is sunken upwards.
Further, the body of the gas cylinder is fixed in the inner cavity of the shell made of the screen plate through welding by the clamp.
Further, the mixing box is of a cuboid structure, a plurality of electromagnetic valves are uniformly arranged on one side plate of the mixing box, and the mixing pipe is arranged on the other side plate perpendicular to the mixing box.
Further, be provided with the combustion cage that is used for holding the burning material in the pottery interior sleeve pipe, the combustion cage has hollow out construction, the second thermocouple penetrates its inner chamber from the combustion cage lower extreme, the combustion cage upper end is connected with through the chain and carries the knot.
Further, when the screw rod drives the upper end of the ceramic inner sleeve to be pulled out from the inner cavity of the ceramic outer sleeve, the cooling fan arranged in the inner cavity of the shell cools the ceramic inner sleeve.
The beneficial effects of the invention are as follows: the gas cylinder controls the output of the required gas components through an electromagnetic valve and a gas mass flowmeter, and the output gas is fully mixed by a gas mixing device and enters a combustion environment consisting of a temperature control combustion chamber and a lifting platform; the temperature control combustion chamber heats the combustion environment by adopting a first thermocouple, and the heating value of the first thermocouple is controlled in real time by a controller through real-time monitoring and feedback of a temperature sensor so that the combustion environment is kept at a constant temperature; the combustion cage is arranged on the lifting table to hold the combustion objects, so that the combustion objects are convenient to fill and the combustion residues are convenient to take out; when the lifting platform rises, the lifting platform is sealed with the temperature-controlled combustion chamber, and then the second thermocouple on the lifting platform ignites the combustion object, so that the problems of gas product loss and mixing of external gas into test equipment caused by the fact that the existing equipment is connected with sealing equipment after the combustion object is ignited are avoided; the gas pollutant generated by combustion is fully dispersed and rapidly cooled through a smoke dispersing mechanism, liquid and solid waste contained in the gas are collected into a collecting tank, and finally the components and the content of the gas pollutant are detected by a tail gas detecting device; the intelligent detection device is reasonable in structure, has the advantages of simple structure, convenience in use, good sealing performance, high intelligent degree and the like, and effectively solves the problem that the conventional detection device is inconvenient to use.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram of the overall structure of an integrated fixed bed for detecting controllable gas pollutants;
FIG. 2 is a schematic diagram of a gas mixing device of a controllable gas contaminant detection integrated fixed bed according to the present invention;
FIG. 3 is a schematic diagram of a mixing plate structure of an integrated fixed bed for detecting controllable gas pollutants;
FIG. 4 is a schematic diagram of a mixing tube structure of an integrated fixed bed for detecting controllable gas pollutants;
FIG. 5 is a schematic diagram of the elevating platform of the integrated fixed bed for detecting the controllable gas pollutants;
FIG. 6 is a schematic diagram of a temperature-controlled combustion chamber of a temperature-controlled gas contaminant detection integrated fixed bed according to the present invention;
fig. 7 is a schematic diagram of a tail gas cooling device of an integrated fixed bed for detecting controllable gas pollutants.
The index marks in the drawings are as follows:
1. the device comprises a shell, 2, a gas cylinder, 3, a gas mass flowmeter, 4, an electromagnetic valve, 5, a gas mixing device, 51, a mixing box, 52, a mixing plate, 53, a mixing pipe, 54, a through hole, 55, an outer pipe, 56, an inner pipe, 6, a tail gas detection device, 7, a tail gas cooling device, 71, a cover plate, 72, an inner sleeve, 73, quartz wool, 74, a collecting tank, 75, a smoke emission mechanism, 76, a cold trap, 8, a temperature control combustion chamber, 81, a motor, 82, a gas delivery pipe, 83, a lead screw, 84, a first thermocouple, 85, a supporting lug, 86, an asbestos insulation sleeve, 87, a temperature sensor, 88, a ceramic outer sleeve, 9, a lifting table, 91, a supporting plate, 92, a plug, 93, a ceramic inner sleeve, 94, a lifting buckle, 95, a combustion cage, 96, a clamping groove, 97, a second thermocouple, 10, a control panel, 11, a controller, 12 and a cooling fan.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
The integrated fixed bed for detecting the controllable gas pollutants as shown in fig. 1 to 7 comprises a shell 1, a gas cylinder 2, a gas mass flowmeter 3, an electromagnetic valve 4, a gas mixing device 5, a tail gas detection device 6, a tail gas cooling device 7, a temperature-controlled combustion chamber 8, a lifting table 9, a control panel 10 and a controller 11.
As shown in fig. 1, the casing 1 has a hollow cuboid structure with a single-side opening, a controller 11 is fixedly arranged in an inner cavity of one side of the casing 1, a casing cover plate is further arranged on the opening of the casing 1 on the same side, a control panel 10 is fixedly arranged on the casing cover plate, and the control panel 10 is used for displaying and adjusting combustion environment data. The gas cylinder 2, the gas mass flowmeter 3, the electromagnetic valve 4, the gas mixing device 5, the tail gas detection device 6, the tail gas cooling device 7, the temperature-control combustion chamber 8 and the lifting table 9 are arranged on the other side of the inner cavity of the shell.
As shown in fig. 1, the gas outlet of the gas cylinder 2 is connected with a gas mass flowmeter 3, the gas mass flowmeter 3 is connected with an electromagnetic valve 4, the gas mass flowmeter 3 and the electromagnetic valve 4 are respectively connected with a controller 11, and the controller 11 controls the opening and closing of the electromagnetic valve 4 through the feedback of the gas mass flowmeter 3, so that mixed (or pure) gas of preset components is obtained.
As shown in fig. 1 and 2, the gas mixing device 5 includes a sealed mixing box 51, a mixing plate 52 and a mixing pipe 53, and the inner cavities of the mixing box 51 are respectively communicated with the inner cavities of the electromagnetic valve 4 and the mixing pipe 53.
As shown in fig. 3, the mixing plate 52 is a bending plate fixedly arranged on the inner cavity of the mixing box 51, wherein the bending part of the mixing plate 52 is of a solid structure, through holes 54 are uniformly formed in the part between the bending parts of the mixing plate 52, and the bending part of the mixing plate 52 is arranged towards the air outlet of the electromagnetic valve 4. The multiple single-component gases are partially collided and dispersed by the solid structure and form turbulence, so that the gases with different components are collided and mixed with each other.
As shown in fig. 4, the mixing tube 53 includes an outer tube 55 and a plurality of inner tubes 56 uniformly arranged in the inner cavity of the outer tube 55 in a spiral shape, and the primarily mixed gas passes through the inner tubes 56 to form mutually rotating gas flows, and then enters the outer tube 55 to collide and mix again, so that the gas mixing is more uniform.
As shown in fig. 6, the temperature-controlled combustion chamber 8 includes an asbestos thermal insulation sleeve 86 for thermal insulation, a temperature sensor 87, a ceramic outer sleeve 88, and a first thermocouple 84, wherein the asbestos thermal insulation sleeve 86 is fixedly disposed in the inner cavity of the casing 1, the ceramic outer sleeve 88 is sleeved in the inner cavity of the asbestos thermal insulation sleeve 86, the temperature sensor 87 is buried in the inner cavity wall of the ceramic outer sleeve 88 for detecting the temperature of the combustion environment, and the first thermocouple 84 is uniformly disposed between the asbestos thermal insulation sleeve 86 and the ceramic outer sleeve 88. The temperature sensor 87 and the first thermocouple 84 are connected to the controller 11, respectively, and the temperature sensor 87 detects the temperature of the combustion environment, and the controller compares the real-time temperature with a preset temperature to adjust the heat generation amount of the first thermocouple 84 and control the temperature of the combustion environment.
As shown in fig. 5, the lifting platform 9 comprises a supporting plate 91, a plug 92 and a ceramic inner sleeve 93; the plug 92 is fixedly arranged in the middle of the supporting plate 91, the lower end of the ceramic inner sleeve 93 is fixedly arranged on the plug 92, the inner cavity of the lower end of the ceramic inner sleeve 93 is communicated with the mixing pipe 53 through the gas pipe 82, and the plug 92 is provided with a clamping groove 96 which surrounds the ceramic inner sleeve 93 and has the same radial section pattern with the ceramic outer sleeve 88.
As shown in fig. 6, the asbestos insulation sleeve 86 is further provided with support protrusions 85 in the axial direction.
As shown in fig. 1, a screw rod 83 is rotatably disposed on the supporting bump 85, one end of the screw rod 83 is in transmission connection with a motor 81 fixedly disposed on the asbestos insulation sleeve 86, the other end of the screw rod 83 is in threaded connection with the supporting plate 91, that is, the screw rod 83 can drive the supporting plate 91 to move up and down, the screw rod 83 drives the upper end of the ceramic inner sleeve 93 to be sleeved into or pulled out of the inner cavity of the ceramic outer sleeve 88, and when the upper end of the ceramic inner sleeve 93 is sleeved into the inner cavity of the ceramic outer sleeve 88, the lower end of the ceramic outer sleeve 88 is clamped into the clamping groove 96 for sealing.
The tail gas cooling device 7 is connected with the upper end of the ceramic outer sleeve 88, and the tail gas detection device 6 is connected with the tail gas cooling device 7.
In one embodiment as shown in fig. 7, the exhaust gas cooling device 7 includes a cold trap 76, an inner sleeve 72, and a quartz wool 73, wherein the inner sleeve 72 is disposed in an inner cavity of the cold trap 76, the quartz wool 73 is disposed in an inner cavity at an upper end of the inner sleeve 72, a smoke emission mechanism 75 is disposed in a middle position of a bottom surface of the inner cavity of the inner sleeve 72, the smoke emission mechanism 75 is made of a metal mesh, and a lower end of the smoke emission mechanism 75 is connected with an upper end of the ceramic outer sleeve 88 through a gas pipe 82; the cold trap 76 is also provided with a cover plate 71 which seals the openings of the cold trap 76 and the inner sleeve 72; the tail gas detection device 6 is connected with the upper end of the inner sleeve 72 through a gas pipe 82. The flue gas escapes along the mesh openings when passing through the flue gas emission mechanism 75, and is more easily emitted into the inner cavity of the inner sleeve 72 relative to the direct blowing of the flue gas, so that the flue gas is more easily cooled.
In one embodiment, the bottom of the inner cavity of the inner sleeve 72 is provided with a collecting groove 74 for collecting solid and liquid impurities, the bottom of the quartz cotton 73 is provided with a spherical surface structure which is concave upwards, the flue gas hits the spherical surface structure to turn over, the flue gas is further dispersed, and meanwhile, the liquid and the solid impurities move towards the upper side of the collecting groove 74 along the spherical surface and finally fall into the collecting groove 74.
In one embodiment, as shown in fig. 1, the body of the gas cylinder 2 is fixed in the inner cavity of the casing 1 made of the mesh plate by welding through a clamp.
In one embodiment shown in fig. 2, the mixing tank 51 has a rectangular parallelepiped structure, a plurality of electromagnetic valves 4 are uniformly disposed on one side plate of the mixing tank 51, and the mixing pipe 53 is disposed on the other side plate perpendicular to the mixing tank, so that the mixed gas can collide and mix with the inner wall of the mixing tank 51 multiple times and then enter the mixing pipe 53, and the mixing effect is enhanced.
In one embodiment, a combustion cage 95 for containing combustion materials is disposed in the inner ceramic sleeve 93, the combustion cage 95 has a hollow structure, the second thermocouple 97 penetrates into the inner cavity of the combustion cage 95 from the lower end of the combustion cage 95, the heating part of the second thermocouple 97 is located at the center of the combustion cage 95, and the upper end of the combustion cage 95 is connected with a lifting buckle 94 through a chain for lifting or placing the ceramic sleeve 93.
In one embodiment, the screw 83 drives the upper end of the inner ceramic sleeve 93 to withdraw from the inner cavity of the outer ceramic sleeve 88, and the cooling fan 12 disposed in the inner cavity of the casing 1 cools the inner ceramic sleeve 93.
The integrated fixed bed for detecting the controllable gas pollutants is reasonable in structure, the gas cylinder controls the output of required gas components through the electromagnetic valve and the gas mass flowmeter, and the output gas is fully mixed by the gas mixing device and enters a combustion environment consisting of a temperature control combustion chamber and a lifting platform; the temperature control combustion chamber heats the combustion environment by adopting a first thermocouple, and the heating value of the first thermocouple is controlled in real time by a controller through real-time monitoring and feedback of a temperature sensor so that the combustion environment is kept at a constant temperature; the combustion cage is arranged on the lifting table to hold the combustion objects, so that the combustion objects are convenient to fill and the combustion residues are convenient to take out; when the lifting platform rises, the lifting platform is sealed with the temperature-controlled combustion chamber, and then the second thermocouple on the lifting platform ignites the combustion object, so that the problems of gas product loss and mixing of external gas into test equipment caused by the fact that the existing equipment is connected with sealing equipment after the combustion object is ignited are avoided; the gas pollutant generated by combustion is fully dispersed and rapidly cooled through a smoke dispersing mechanism, liquid and solid waste contained in the gas are collected into a collecting tank, and finally the components and the content of the gas pollutant are detected by a tail gas detecting device; the intelligent detection device is reasonable in structure, has the advantages of simple structure, convenience in use, good sealing performance, high intelligent degree and the like, and effectively solves the problem that the conventional detection device is inconvenient to use.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (5)
1. A controllable gas pollutant detects integration fixed bed, characterized by: the device comprises a shell (1), a gas cylinder (2), a gas mass flowmeter (3), an electromagnetic valve (4), a gas mixing device (5), a tail gas detection device (6), a tail gas cooling device (7), a temperature control combustion chamber (8), a lifting table (9), a control panel (10) and a controller (11), wherein the shell (1) is of a hollow cuboid structure with a single-side opening, the controller (11) is fixedly arranged in an inner cavity of one side of the shell (1), a shell cover plate is further arranged on the opening of the shell (1) on the same side, and the control panel (10) is fixedly arranged on the shell cover plate;
the gas cylinder (2), the gas mass flowmeter (3), the electromagnetic valve (4), the gas mixing device (5), the tail gas detection device (6), the tail gas cooling device (7), the temperature-controlled combustion chamber (8) and the lifting table (9) are arranged on the other side of the inner cavity of the shell; the air outlet of the air bottle (2) is connected with a gas mass flowmeter (3), and the gas mass flowmeter (3) is connected with an electromagnetic valve (4);
the gas mixing device (5) comprises a sealed mixing box (51), a mixing plate (52) and a mixing pipe (53), wherein the inner cavity of the mixing box (51) is respectively communicated with the inner cavities of the electromagnetic valve (4) and the mixing pipe (53); the mixing pipe (53) comprises an outer pipe (55) and a plurality of inner pipes (56) which are spirally and uniformly arranged in the inner cavity of the outer pipe (55); the mixing plate (52) is a bending plate fixedly arranged on the inner cavity of the mixing box (51), wherein the bending part of the mixing plate (52) is of a solid structure, through holes (54) are uniformly formed in the part between the bending parts of the mixing plate (52), and the bending part of the mixing plate (52) is arranged towards the air outlet of the electromagnetic valve (4);
the temperature-control combustion chamber (8) comprises an asbestos heat-insulating sleeve (86), a temperature sensor (87), a ceramic outer sleeve (88) and a first thermocouple (84), wherein the asbestos heat-insulating sleeve (86) is fixedly arranged in the inner cavity of the shell (1), the ceramic outer sleeve (88) is sleeved in the inner cavity of the asbestos heat-insulating sleeve (86), the temperature sensor (87) is buried in the inner cavity wall of the ceramic outer sleeve (88), and the first thermocouple (84) is uniformly paved between the asbestos heat-insulating sleeve (86) and the ceramic outer sleeve (88);
the lifting table (9) comprises a supporting plate (91), a plug (92) and a ceramic inner sleeve (93); the plug (92) is fixedly arranged in the middle of the supporting plate (91), the lower end of the ceramic inner sleeve (93) is fixedly arranged on the plug (92), the inner cavity at the lower end of the ceramic inner sleeve (93) is communicated with the mixing pipe (53) through the gas pipe (82), and a clamping groove (96) with the same radial section shape as the ceramic outer sleeve (88) is formed on the plug (92) around the ceramic inner sleeve (93);
the asbestos thermal insulation sleeve (86) is also provided with a supporting lug (85) along the axial direction, the supporting lug (85) is rotatably provided with a screw rod (83), one end of the screw rod (83) is in transmission connection with a motor (81) fixedly arranged on the asbestos thermal insulation sleeve (86), the other end of the screw rod (83) is in threaded connection with a supporting plate (91), the screw rod (83) drives the upper end of a ceramic inner sleeve (93) to be sleeved into or pulled out of an inner cavity of a ceramic outer sleeve (88), and when the upper end of the ceramic inner sleeve (93) is sleeved into the inner cavity of the ceramic outer sleeve (88), the lower end of the ceramic outer sleeve (88) is clamped into a clamping groove (96);
the tail gas cooling device (7) is connected with the upper end of the ceramic outer sleeve (88), and the tail gas detection device (6) is connected with the tail gas cooling device (7);
the tail gas cooling device (7) comprises a cold trap (76), an inner sleeve (72) and quartz cotton (73), wherein the inner sleeve (72) is arranged in the inner cavity of the cold trap (76), the quartz cotton (73) is arranged in the inner cavity of the upper end of the inner sleeve (72), a smoke emission mechanism (75) is arranged in the middle of the bottom surface of the inner cavity of the inner sleeve (72), the smoke emission mechanism (75) is made of a metal net in a rolling mode, and the lower end of the smoke emission mechanism (75) is connected with the upper end of a ceramic outer sleeve (88) through a gas pipe (82); the cold trap (76) is also provided with a cover plate (71) for simultaneously sealing the openings of the cold trap (76) and the inner sleeve (72); the tail gas detection device (6) is connected with the upper end of the inner sleeve (72) through a gas pipe (82);
the body of the gas cylinder (2) is fixed in the inner cavity of the shell (1) which is welded by the screen plate through the clamp.
2. The integrated fixed bed for detecting controllable gas pollutants according to claim 1, wherein the integrated fixed bed is characterized in that: the bottom of the inner cavity of the inner sleeve (72) is provided with a collecting groove (74) for collecting solid and liquid impurities, and the bottom of the quartz cotton (73) is provided with a spherical surface structure which is concave upwards.
3. The integrated fixed bed for detecting controllable gas pollutants according to claim 1, wherein the integrated fixed bed is characterized in that: the mixing box (51) is of a cuboid structure, a plurality of electromagnetic valves (4) are uniformly arranged on one side plate of the mixing box (51), and the mixing pipe (53) is arranged on the other side plate perpendicular to the mixing box.
4. The integrated fixed bed for detecting controllable gas pollutants according to claim 1, wherein the integrated fixed bed is characterized in that: the ceramic inner sleeve (93) in be provided with and be used for holding the combustion cage (95) of burning material, combustion cage (95) have hollow out construction, second thermocouple (97) penetrates its inner chamber from combustion cage (95) lower extreme, combustion cage (95) upper end is connected with through the chain and carries knot (94).
5. The integrated fixed bed for detecting controllable gas pollutants according to claim 1, wherein the integrated fixed bed is characterized in that: when the screw rod (83) drives the upper end of the ceramic inner sleeve (93) to be pulled out from the inner cavity of the ceramic outer sleeve (88), the cooling fan (12) arranged in the inner cavity of the casing (1) cools the ceramic inner sleeve (93).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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