CN111239008A - Sampling and measuring device for smoke dust and smoke gas of high-temperature positive-pressure flue - Google Patents
Sampling and measuring device for smoke dust and smoke gas of high-temperature positive-pressure flue Download PDFInfo
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- CN111239008A CN111239008A CN202010191786.5A CN202010191786A CN111239008A CN 111239008 A CN111239008 A CN 111239008A CN 202010191786 A CN202010191786 A CN 202010191786A CN 111239008 A CN111239008 A CN 111239008A
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- 239000000779 smoke Substances 0.000 title claims abstract description 114
- 238000005070 sampling Methods 0.000 title claims abstract description 84
- 239000000428 dust Substances 0.000 title claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 105
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 75
- 239000003546 flue gas Substances 0.000 claims description 73
- 239000007789 gas Substances 0.000 claims description 55
- 238000007789 sealing Methods 0.000 claims description 18
- 241000973497 Siphonognathus argyrophanes Species 0.000 claims description 16
- 238000009833 condensation Methods 0.000 claims description 11
- 230000005494 condensation Effects 0.000 claims description 11
- 238000009499 grossing Methods 0.000 claims description 5
- 235000019504 cigarettes Nutrition 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 2
- 239000003500 flue dust Substances 0.000 claims 8
- 238000012545 processing Methods 0.000 abstract description 4
- 239000003517 fume Substances 0.000 description 13
- 239000003570 air Substances 0.000 description 9
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 229910052593 corundum Inorganic materials 0.000 description 3
- 239000010431 corundum Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
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- 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
- G01N1/2258—Sampling from a flowing stream of gas in a stack or chimney
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- 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
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/4162—Systems investigating the composition of gases, by the influence exerted on ionic conductivity in a liquid
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- Electrochemistry (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention provides a sampling and measuring device for smoke dust and smoke of a high-temperature positive-pressure flue, which comprises a host, a pitot tube assembly, a sampling tube assembly, a pre-condensing system and a condensing system, wherein an electrochemical sensor assembly, a pressure sensor, a data processing module and a flow control system are arranged in the host, the pitot tube air guide tube of the pitot tube assembly is connected with the pressure sensor, the electrochemical sensor assembly and the pressure sensor are respectively connected with the data processing module, the smoke flow control system is connected with the electrochemical sensor assembly, the sampling tube of the sampling tube assembly is connected with the pre-condensing system, the pre-condensing system is connected with the condensing system, and the condensing system is connected with the flow control system. After the gas in the flue is conveyed into the sampling assembly under positive pressure by the pre-condensing system, the temperature is reduced to about 200 ℃ from the highest 800 ℃, the temperature is continuously reduced to the ambient temperature by the condensing system, the gas temperature is efficiently and obviously cooled, and the personal safety and the service life of a rear-end device are effectively ensured.
Description
Technical Field
The invention belongs to the technical field of fixed pollution source monitoring equipment, and particularly relates to a sampling device for smoke dust and smoke gas of a high-temperature positive-pressure flue.
Background
High-temperature and high-pressure smoke and dust is one of the fixed pollution source monitoring fields, and the smoke and dust is in a positive pressure state in a flue and is far higher than the atmospheric pressure; temperatures are also typically as high as 800 ℃. If a conventional instrument is used for sampling and measuring, the high-temperature and high-pressure smoke can cause irreversible damage to the sampling instrument. And the sampling is carried out by using a conventional instrument, and no related protection treatment measures exist in the face of high-temperature and high-pressure working conditions, so that positive-pressure smoke is easily sprayed out of a flue, and potential safety hazards exist for field sampling workers.
The existing sampling device for high-temperature and high-pressure smoke and dust smoke has the following refrigeration modes: sampling pipe connects simple and easy condenser of barrel constitution of dress cooling water to cool down for the flue gas, need manually to add water for the condenser, and high temperature malleation flue all is tens meters height usually, is subject to site work condition, and the water source is not enough to the cooling effect is not significant, still causes the damage to sampling device, and the sampling pipe and the pitot tube temperature resistance and the corrosion resistance of current device also can not be lasting, need often to change, increase cost.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a device for sampling smoke dust and smoke gas in a high-temperature positive-pressure flue, which mainly solves the problems that the structure of a condenser is too simple, the condensation effect cannot be achieved, the device is damaged and the like when the existing condenser is used for collecting the smoke dust and smoke gas in the high-temperature positive-pressure flue.
The invention provides a sampling device for smoke dust and smoke of a high-temperature positive-pressure flue, which comprises a pitot tube assembly, and is further improved on the basis of the prior art: the sampling pipe assembly is communicated with the pre-condensing system through a pipeline to primarily cool collected smoke and dust flue gas, and the pre-condensing system is communicated with the condensing system through a pipeline to further cool the smoke and dust flue gas to the ambient temperature.
Preferably, the pre-condensing system comprises a pre-condensing barrel, a pre-condensing bent pipe, a water inlet pipe, a water outlet pipe, a water inlet valve, a water outlet valve, a gas guide pipe and a flow control valve, the pre-condensing barrel is divided into a condensed water cavity and a gas guide cavity, the pre-condensing bent pipe is arranged in the condensed water cavity of the pre-condensing barrel, one end of the pre-condensing bent pipe is communicated with the sampling pipe assembly, the other end of the pre-condensing bent pipe extends into the gas guide cavity, the water inlet pipe and the water outlet pipe are respectively communicated with the condensed water cavity, the water inlet valve is arranged on the water inlet pipe, the water.
Preferably, the bottom of the pre-condensing barrel is of a conical structure and is provided with a drain valve.
Preferably, the condensing system comprises a shell, a circulating water cavity, a smoke and fume gas conducting cavity, a water storage cavity, a coiled pipe, a circulating water inlet pipe, a circulating water outlet pipe, a smoke and fume gas inlet pipe, a water pump, a smoke and fume gas outlet pipe, a smoke and fume gas outlet valve, a fume pressure release valve and a fume gas outlet valve, wherein the shell is internally divided into the circulating water cavity, the smoke and fume gas conducting cavity and the water storage cavity; the circulating water inlet pipe and the circulating water outlet pipe are respectively communicated with the circulating water cavity, the circulating water outlet pipe is connected with the water pump and is communicated with the water inlet pipe of the pre-condensing system, and the circulating water outlet pipe is communicated with the water outlet pipe of the pre-condensing system; the smoke and dust outlet pipe and the flue gas outlet pipe are respectively communicated with the smoke and dust flue gas guide cavity, the smoke and dust outlet pipe is provided with a smoke and dust outlet valve, and the flue gas outlet pipe is provided with a flue gas pressure release valve and a flue gas outlet valve.
Preferably, the bottom of the water storage cavity is of a conical structure and is provided with a drain valve of a condensing system.
Preferably, the shell comprises a shell and an inner container, heat preservation cotton is filled between the shell and the inner container, and a support is further mounted at the bottom of the shell.
Preferably, the system also comprises a flow control system, wherein the flow control system is divided into a flue gas flow control system and a smoke dust flow control system, and the flue gas flow control system comprises a flue gas inlet nozzle, a flue gas pump, a gas container, a flue gas flowmeter and an electrochemical sensor assembly; the flue gas inlet nozzle is connected with a flue gas outlet pipe of the condensing system, and the flue gas inlet nozzle is connected with a flue gas pump, a gas capacitor, a flue gas flowmeter and an electrochemical sensor assembly sequentially through pipelines; the smoke flow control system comprises a smoke inlet nozzle, an electric flow control valve, a gas smooth buffer cavity and an electronic flowmeter; the smoke and dust suction nozzle is connected with a smoke and dust outlet pipe of the condensing system, and is sequentially connected with the electric flow regulating valve, the gas smoothing buffer cavity and the electronic flowmeter through pipelines.
Preferably, the device further comprises a pitot tube assembly and a pressure sensor, wherein the pitot tube air duct of the pitot tube assembly is connected with the pressure sensor.
Preferably, still include protection system, protection system includes pitot tube mouth seal cover, pitot tube mouth sealing cap, sampling pipe mouth seal cover and sampling pipe mouth sealing cap, pitot tube mouth seal cover and pitot tube mouth sealing cap adopt the anti-cover formula structural connection mouth, sampling pipe mouth seal cover and sampling pipe mouth sealing cap also adopt the anti-cover formula structural connection mouth.
Preferably, the pitot tube component, the sampling tube component, the pre-condensing system and the condensing system are all made of high-temperature-resistant stainless steel.
The invention has the beneficial effects that:
after the gas in the flue is conveyed into the sampling assembly under positive pressure by the pre-condensing system, the temperature is reduced to about 200 ℃ from the highest 800 ℃, the temperature is continuously reduced to the ambient temperature by the condensing system, the gas temperature is efficiently and obviously cooled, and the personal safety and the service life of a rear-end device are effectively ensured. The pre-condensing system and the condensing system also have the function of water removal, and devices in the rear-end host are prevented from being damaged after the water removal of the flue gas. The pre-condensing system and the condensing system both adopt a barrel type structure, are convenient to carry and process, can finish one-time sampling work by filling cooling water once, and are suitable for operation in high-altitude and high-temperature severe environments.
The protection system is used for connecting the device with a flue port, plays a role in shielding and cooling, and further ensures the personal safety of operating personnel.
The flow control system accurately measures the flow of smoke dust and smoke gas sampling, and the smoke dust sampling and the smoke gas measurement are installed in a sub-module mode, so that the measurement accuracy and the working reliability are guaranteed, and meanwhile, the production cost and the operation and maintenance cost are reduced. A smoke pressure release valve of a condensation system is arranged at the smoke interface, so that the back suction of ambient air is prevented, and the experimental data of smoke detection is prevented from being influenced. The whole machine of the sampling device for the smoke dust and the smoke gas of the high-temperature positive-pressure flue has the characteristics of easiness in operation, safety and reliability.
Drawings
FIG. 1 is a schematic view of the overall structure of the device of the present invention,
FIG. 2 is a schematic diagram of the construction of the pitot tube assembly, sampling tube assembly and pre-condensing system of the present invention,
FIG. 3 is a schematic diagram of the structure of the condensing system of the present invention,
fig. 4 is a schematic structural diagram of a flow control system according to the present invention.
The attached drawings are marked as follows:
1. a sampling pipe assembly, 11, a sampling nozzle, 12, a sampling elbow, 13, a sampling pipe, 14, a sampling pipe handle, 2, a pitot pipe assembly, 21, a pitot pipe, 22, a pitot pipe sleeve, 23, a pitot pipe air duct, 24, a pitot pipe handle, 20, a condensing system, 200, a shell, 201, a smoke and fume air inlet pipe, 202, a smoke and fume outlet valve, 203, a fume pressure relief valve, 204, a gasoline filter element filter, 205, a fume outlet valve, 206, a coil pipe, 207, a circulating water cavity, 208, an inner container, 209, a shell, 210, a smoke and fume air guide cavity, 211, a water storage cavity, 212, a support, 213, a condensing system drain valve, 214, a circulating water outlet pipe, 215, a water pump, 216, a circulating water inlet pipe, 217, a smoke outlet pipe, 218, a fume outlet pipe, 3, a pre-condensing system, 30, a drain valve, 31, a condensing barrel, 34. the device comprises a water outlet pipe 35, a water inlet valve 36, a water outlet valve 37, a gas guide pipe 39, a flow control valve 311, a condensed water cavity 312, a gas guide cavity 4, a host 41 and an electrochemical sensor assembly.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and should not be construed as limiting the scope of the invention.
Examples
Referring to fig. 1 and 2, the sampling device for high-temperature positive-pressure flue smoke dust provided by this embodiment includes a sampling tube assembly 1, a pitot tube assembly 2, a pre-condensing system 3, a condensing system 20, a flow control system 30, and a host 4. The host 4 is internally provided with a flow control system 30, a pressure sensor and a data processing module, wherein the pressure sensor is connected with the data processing module. Sampling pipe subassembly 1 includes that sampling mouth 11, sampling elbow 12, sampling pipe 13, sampling pipe handle 14, corundum strain a section of thick bamboo, sampling mouth 11 is connected with sampling pipe 13, and sampling elbow 12 is connected with sampling pipe 13, and corundum filter cartridge clamping is in sampling elbow 12, sampling pipe handle 14 is connected with sampling pipe 13. The corundum filter cartridge is used for trapping smoke dust. The sampling elbow 12 has a hexagonal configuration for ease of disassembly.
Referring to fig. 2, the pitot tube assembly 2 includes a pitot tube 21, a pitot tube sleeve 22, a pitot tube air duct 23, a pitot tube handle 24, a high temperature resistant temperature and moisture content probe, the pitot tube is an S-shaped pitot tube, the pitot tube 21 is connected with the pitot tube air duct 23, the pitot tube sleeve 22 covers the pitot tube 21, the pitot tube handle 24 is installed on the pitot tube handle 24, the high temperature resistant temperature and moisture content probe is arranged at the head end inside the pitot tube sleeve, and the pitot tube air duct 23 is connected to a pressure sensor inside the host 4. The dynamic pressure and the static pressure of the flue gas in the flue are measured by the pitot tube component 2 and the pressure sensor, so that the flow velocity of the flue gas is automatically calculated. The high-temperature-resistant temperature and moisture content probe is used for detecting the temperature and the humidity in the flue.
Referring to fig. 2, the pre-condensing system 3 includes a pre-condensing barrel 31, a pre-condensing elbow 32, a water inlet pipe 33, a water outlet pipe 34, a water inlet valve 35, a water outlet valve 36, a gas guide pipe 37, and a flow control valve 39, the pre-condensing barrel 31 is divided into a condensed water cavity 311 and a gas guide cavity 312, the pre-condensing elbow 32 is disposed inside the condensed water cavity 311 of the pre-condensing barrel 31, one end of the pre-condensing elbow is communicated with the sampling pipe 13, the other end of the pre-condensing elbow extends into the gas guide cavity 312, the water inlet pipe 33 and the water outlet pipe 34 are respectively communicated with the condensed water cavity 311, the water inlet valve 35 is disposed on the water inlet pipe 33, the water outlet valve 36 is disposed on the water outlet pipe 34, the gas guide pipe 37 is communicated. The pre-condensing system 3 conveys the gas in the flue into the sampling assembly 1 under positive pressure, and then the temperature is reduced from the highest 800 ℃ to about 200 ℃, thereby effectively ensuring the personal safety and the service life of rear-end devices.
Referring to fig. 3, the condensing system 20 includes a housing 200, a smoke inlet pipe 201, a smoke outlet valve 202, a smoke pressure release valve 203, a gasoline filter element filter 204, a smoke outlet valve 205, a coiled pipe 206, a circulating water cavity 207, an inner container 208, a housing 209, a smoke gas guide cavity 210, a water storage cavity 211, a bracket 212, a condensing system drain valve 213, a circulating water outlet pipe 214, a water pump 215, a circulating water inlet pipe 216, a smoke outlet pipe 217, and a smoke outlet pipe 218. The shell 200 comprises an outer shell 209 and an inner container 208, heat insulation cotton is filled between the outer shell 209 and the inner container 208, and a support 212 is further mounted at the bottom of the shell 200. The inside of the shell 200 is divided into a circulating water cavity 207, a smoke and dust flue gas guide cavity 210 and a water storage cavity 211, the coiled pipe 206 is arranged inside the circulating water cavity 207, one end of the coiled pipe is communicated with the smoke and dust flue gas inlet pipe 201, and the other end of the coiled pipe extends into the smoke and dust flue gas guide cavity 210. The smoke and dust flue gas inlet pipe 201 is communicated with a gas guide pipe 37 of the pre-condensing system 3; the circulating water inlet pipe 216 and the circulating water outlet pipe 214 are respectively communicated with the circulating water cavity 207, the circulating water outlet pipe 214 is connected with the water pump 215 and is communicated with the water inlet pipe 33 of the pre-condensing system 3, and the circulating water inlet pipe is communicated with the water outlet pipe 34 of the pre-condensing system 3; the smoke outlet pipe 217 and the smoke outlet pipe 218 are respectively communicated with the smoke and smoke gas guide cavity 210, the smoke outlet pipe 217 is provided with a smoke outlet valve 202, and the smoke outlet pipe 218 is provided with a smoke pressure release valve 203, a gasoline filter element filter 204 and a smoke outlet valve 205. The bottom of the water storage cavity 211 is of a conical structure and is provided with a drain valve 213 of a condensing system.
The flow control valve 39 of the pre-condensing system 3, the smoke outlet valve 202 of the condensing system 20, the smoke pressure release valve 203 and the smoke outlet valve 205 form an initial flow control system, which can initially control the flow of smoke and smoke entering the main machine 4. Condensing system 20 is used for high-efficient cooling gas temperature and dewatering, with the temperature drop to ambient temperature, guarantees after the flue gas dewatering that the sampling instrument is not damaged. The housing 200 is of a barrel structure, and is convenient to carry and process.
The pre-condensing elbow 32 of the pre-condensing system 3 and the coiled pipe 206 of the condensing system 20 both adopt spiral structures, so that the condensing time is prolonged, and the condensing effect is improved.
The sampling tube assembly 1, the pitot tube assembly 2, the pre-condensing system 20 and the condensing system 30 are made of high-temperature-resistant stainless steel materials, including but not limited to materials such as 310S and 316, the temperature resistance and the corrosion resistance of the device are greatly improved, the pitot tube assembly 2 and the sampling tube assembly 1 do not need to be replaced frequently, and cost is saved.
Referring to fig. 4, the flow control system 30 is composed of a flue gas flow control system and a smoke flow control system. The smoke flow control system comprises a smoke inlet nozzle 301, an electric flow control valve 302, a gas smoothing buffer cavity 303 and an electronic flow meter 304, wherein the smoke inlet nozzle 301 is connected with a smoke outlet pipe 217 of the condensing system 20, and the smoke inlet nozzle 301 is sequentially connected with the electric flow control valve 302, the gas smoothing buffer cavity 303 and the electronic flow meter 304 through pipelines. The smoke flow control system automatically tracks the flow of 0-100L/min, and the control stability is +/-2%. The electronic flowmeter 304 is a high-precision dynamic pressure balance corrosion-resistant electronic meter. Wherein, the electric flow control valve 302 realizes the flow control by changing the channels; the gas smoothing buffer cavity 303 adopts a honeycomb structure, so that uneven gas flow is smoothed, and the accuracy of flow detection is ensured; the electronic flow meter 304 provides an accurate measurement of the gas flow therethrough.
The flue gas flow control system comprises a flue gas inlet nozzle 305, a flue gas pump 306, a gas container 307, a flue gas flow meter 308 and an electrochemical sensor assembly 41; the flue gas inlet nozzle 305 is connected with the flue gas outlet pipe 218 of the condensing system 20, and the flue gas inlet nozzle 305 is connected with the flue gas pump 306, the gas container 307, the flue gas flow meter 308 and the electrochemical sensor assembly 41 in sequence through pipelines. The electrochemical sensor assembly 41 can measure the contents of various chemical components such as sulfur dioxide, nitrogen dioxide, carbon monoxide, hydrogen sulfide, oxygen and the like in the flue gas.
The cooling water of the pre-condensing system 3 and the cooling water of the condensing system 20 can be circulated under the action of the water pump 215, the flue gas enters the pre-condensing elbow 32 from the sampling pipe 13, flows through the condensed water cavity 311, is cooled, enters the air guide cavity 312, and is discharged from the air guide pipe 37, the condensed water generated by the cooled flue gas is stored at the bottom of the pre-condensing barrel 31, and the flow rate is controlled by the flow control valve 39. The flue gas after the preliminary cooling and water removal from the pre-condensing system 3 enters the serpentine pipe 206 of the condensing system 20, flows through the circulating water cavity 207, is cooled, and then enters the flue gas guide cavity 210, and the condensed water generated by the cooled flue gas is stored in the water storage cavity 211. After reaching the room temperature, the flue gas is divided into two paths to enter a smoke outlet pipe 217 and a flue gas outlet pipe 218 respectively. One path entering the smoke outlet pipe 217 is used for measuring the volume of smoke through the flow regulating system. One path entering the flue gas outlet pipe 218 is used for analyzing the contents of various chemical components such as sulfur dioxide, nitrogen dioxide, carbon monoxide, hydrogen sulfide, oxygen and the like in the flue gas through the electrochemical sensor assembly 41.
Referring to fig. 2, the device of this embodiment further includes a protection system 5 for effectively cooling and shielding the high-temperature gas ejected from the positive pressure flue gas gap to prevent personal injury. Protection system 5 includes pitot tube mouth seal cover 51, pitot tube mouth sealing cap 52, sampling pipe mouth seal cover 53 and sampling pipe mouth sealing cap 54, pitot tube mouth seal cover 51 adopts the anti-formula structural connection mouth of cigarette with pitot tube mouth sealing cap 52, and is specific, pitot tube mouth seal cover 51 front end is the external screw thread, installs it at the mouth of cigarette, reuse pitot tube mouth sealing cap 52 and rear end threaded connection thereof, is the through-hole in the middle of pitot tube mouth seal cover 51 and the pitot tube mouth sealing cap 52, and pitot tube sleeve 22 passes from the through-hole. Graphite packing is added between the pitot tube sleeve 22 and the pitot tube flue port sealing sleeve 51 to play a role in sealing. Sampling pipe flue port seal cover 53 and sampling pipe flue port sealing cap 54 also adopt the anti-formula structure of covering to connect the flue port, and its connected mode is the same with the pitot tube, no longer describes any more. The pitot tube flue port sealing sleeve 51 can slide back and forth on the pitot tube sleeve 22, and the sampling pipe flue port sealing sleeve 53 can also slide back and forth on the sampling pipe 13, so that the sampling pipe can be conveniently used under different working conditions.
The sampling device for the smoke dust and the smoke gas of the high-temperature positive-pressure flue is suitable for the environment of a high-temperature high-pressure pollution source, and can be used for sampling the smoke dust in the positive-pressure flue and carrying out field analysis on the smoke gas.
Claims (10)
1. The utility model provides a sampling device of high temperature malleation flue smoke and dust flue gas, includes the sampling tube subassembly, its characterized in that: the sampling pipe assembly is communicated with the pre-condensing system through a pipeline to primarily cool collected smoke and dust flue gas, and the pre-condensing system is communicated with the condensing system through a pipeline to further cool the smoke and dust flue gas to the ambient temperature.
2. The device for sampling high-temperature positive-pressure flue dust and flue gas as claimed in claim 1, wherein: the pre-condensation system comprises a pre-condensation barrel, a pre-condensation bent pipe, a water inlet pipe, a water outlet pipe, a water inlet valve, a water outlet valve, a gas guide pipe and a flow control valve, wherein the pre-condensation barrel is divided into a condensed water cavity and a gas guide cavity, the pre-condensation bent pipe is arranged in the condensed water cavity of the pre-condensation barrel, one end of the pre-condensation bent pipe is communicated with the sampling pipe assembly, the other end of the pre-condensation bent pipe extends into the gas guide cavity, the water inlet pipe and the water outlet pipe are respectively communicated with the condensed water cavity, the water inlet valve is arranged on the water inlet pipe.
3. The device for sampling flue dust and flue gas of a high-temperature positive-pressure flue of claim 2, wherein: the bottom of the pre-condensing barrel is of a conical structure and is provided with a drain valve.
4. The device for sampling flue dust and flue gas of a high-temperature positive-pressure flue of claim 2, wherein: the condensation system comprises a shell, a circulating water cavity, a smoke and dust smoke gas air guide cavity, a water storage cavity, a coiled pipe, a circulating water inlet pipe, a circulating water outlet pipe, a smoke and dust smoke gas inlet pipe, a water pump, a smoke and dust gas outlet pipe, a smoke and dust gas outlet valve, a smoke and dust pressure release valve and a smoke and gas outlet valve, wherein the shell is internally divided into the circulating water cavity, the smoke and dust smoke gas air guide cavity and the water storage cavity; the circulating water inlet pipe and the circulating water outlet pipe are respectively communicated with the circulating water cavity, the circulating water outlet pipe is connected with the water pump and is communicated with the water inlet pipe of the pre-condensing system, and the circulating water outlet pipe is communicated with the water outlet pipe of the pre-condensing system; the smoke and dust outlet pipe and the flue gas outlet pipe are respectively communicated with the smoke and dust flue gas guide cavity, the smoke and dust outlet pipe is provided with a smoke and dust outlet valve, and the flue gas outlet pipe is provided with a flue gas pressure release valve and a flue gas outlet valve.
5. The device for sampling high-temperature positive-pressure flue dust and flue gas of claim 4, wherein: the bottom of the water storage cavity is of a conical structure and is provided with a drain valve of a condensing system.
6. The device for sampling high-temperature positive-pressure flue dust and flue gas of claim 4, wherein: the shell comprises a shell and an inner container, heat-preservation cotton is filled between the shell and the inner container, and a support is further mounted at the bottom of the shell.
7. The device for sampling high-temperature positive-pressure flue dust and flue gas of claim 4, wherein: the flow control system is divided into a flue gas flow control system and a smoke dust flow control system, and the flue gas flow control system comprises a flue gas inlet nozzle, a flue gas pump, a gas capacitor, a flue gas flowmeter and an electrochemical sensor assembly; the flue gas inlet nozzle is connected with a flue gas outlet pipe of the condensing system, and the flue gas inlet nozzle is connected with a flue gas pump, a gas capacitor, a flue gas flowmeter and an electrochemical sensor assembly sequentially through pipelines; the smoke flow control system comprises a smoke inlet nozzle, an electric flow control valve, a gas smooth buffer cavity and an electronic flowmeter; the smoke and dust suction nozzle is connected with a smoke and dust outlet pipe of the condensing system, and is sequentially connected with the electric flow regulating valve, the gas smoothing buffer cavity and the electronic flowmeter through pipelines.
8. The device for sampling high-temperature positive-pressure flue dust and flue gas as claimed in claim 1, wherein: the device also comprises a pitot tube assembly and a pressure sensor, wherein the pitot tube air duct of the pitot tube assembly is connected with the pressure sensor.
9. The device for sampling flue dust and flue gas of a high-temperature positive-pressure flue of claim 8, wherein: still include protection system, protection system includes pitot tube mouth seal cover, pitot tube mouth sealing cap, sampling pipe mouth seal cover and sampling pipe mouth sealing cap, pitot tube mouth seal cover and pitot tube mouth sealing cap adopt the anti-formula structural connection mouth of cigarette, sampling pipe mouth seal cover and sampling pipe mouth sealing cap also adopt the anti-formula structural connection mouth of cigarette.
10. The device for sampling and measuring smoke and dust of the high-temperature positive-pressure flue of claim 8, wherein: the pitot tube component, the sampling tube component, the pre-condensing system and the condensing system are all made of high-temperature-resistant stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010191786.5A CN111239008A (en) | 2020-03-18 | 2020-03-18 | Sampling and measuring device for smoke dust and smoke gas of high-temperature positive-pressure flue |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010191786.5A CN111239008A (en) | 2020-03-18 | 2020-03-18 | Sampling and measuring device for smoke dust and smoke gas of high-temperature positive-pressure flue |
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| CN111239008A true CN111239008A (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010191786.5A Pending CN111239008A (en) | 2020-03-18 | 2020-03-18 | Sampling and measuring device for smoke dust and smoke gas of high-temperature positive-pressure flue |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112432826A (en) * | 2020-12-03 | 2021-03-02 | 华能秦煤瑞金发电有限责任公司 | Power plant flue gas sulfur dioxide monitoring devices |
| CN116296620A (en) * | 2023-02-09 | 2023-06-23 | 轻准(杭州)科技有限公司 | Gas path acquisition system, device and method of flue gas analyzer |
-
2020
- 2020-03-18 CN CN202010191786.5A patent/CN111239008A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112432826A (en) * | 2020-12-03 | 2021-03-02 | 华能秦煤瑞金发电有限责任公司 | Power plant flue gas sulfur dioxide monitoring devices |
| CN116296620A (en) * | 2023-02-09 | 2023-06-23 | 轻准(杭州)科技有限公司 | Gas path acquisition system, device and method of flue gas analyzer |
| CN116296620B (en) * | 2023-02-09 | 2023-11-21 | 轻准(杭州)科技有限公司 | Gas path acquisition system, device and method of flue gas analyzer |
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