CN211317900U - Jet sampling and smoke heating method extraction type smoke detector - Google Patents
Jet sampling and smoke heating method extraction type smoke detector Download PDFInfo
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- CN211317900U CN211317900U CN201922114148.9U CN201922114148U CN211317900U CN 211317900 U CN211317900 U CN 211317900U CN 201922114148 U CN201922114148 U CN 201922114148U CN 211317900 U CN211317900 U CN 211317900U
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Abstract
The utility model relates to a efflux sampling technical field, and a efflux sampling and flue gas heating method extraction formula smoke and dust detector is disclosed, including the equipment box, the equipment box is the hollow case of rectangle, and the inside of equipment box is provided with detection device, and detection device includes smoke and dust appearance controller, probe, smoke and dust appearance, fan, efflux room and heating device, and the equal fixed mounting of smoke and dust appearance and smoke and dust appearance controller pass through the wire and connect on the lateral wall of smoke and dust appearance and smoke and dust appearance controller, and heating device and efflux room pass through pipe connection and the equal fixed mounting of heating device and efflux room on the inner wall of equipment box. The utility model discloses in, when the instrument starts, after heating heater to 260 ℃, smoke and dust appearance scattering room temperature automatic control is at 150 ~ 160 ℃, and sampling flue gas temperature control is far above the dew point temperature, can not disturb the measurement, and the operation is reliable, the utility model discloses it becomes possible to measure low temperature high humidity flue gas, improves coal fired gas power plant smoke emission smoke and dust concentration measurement reliability and accuracy greatly.
Description
Technical Field
The utility model relates to a cutting means technical field especially relates to a efflux sampling and smoke heating method extraction formula smoke and dust detector.
Background
With the rapid development of Chinese economy, environmental problems are increasingly prominent, and the happiness of common people is greatly reduced in the persistent haze weather after winter in North China. The appeal of the people to the habitable environment is to push the industrial and mining enterprises to take various measures to reduce the emission of pollutants, and government departments also continuously improve the emission standard, forcibly require the high-energy-consumption enterprises such as steel, electric power, cement and glass manufacturing to carry out technical upgrading, and take various measures to reduce the emission of pollutants, particularly the emission of industrial smoke dust. For years, the flue gas monitoring of domestic large-scale thermal power plants has completely adopted the CEMS on-line analysis technology, wherein dust detection also includes dust detection, but because the requirement on emission indexes is not high in the early stage, the concentration of the emitted smoke dust is lower than 50mg/m3, even if the concentration is qualified, the maximum range of a dust instrument is generally 500-800 mg/m3, the standard has been improved to 5mg/m3 in recent years, particularly after a wet desulphurization and dust removal system is adopted, the temperature of the emitted smoke gas is reduced, water vapor in the smoke gas is atomized, and the detection accuracy and precision of smoke dust emission are higher and higher.
The online detection of smoke emission generally adopts an insertion type smoke dust instrument method, and particularly after a wet desulphurization system and a wet dedusting system are adopted, the temperature of the emitted smoke is reduced, water vapor in the smoke is atomized, the smoke temperature is below a dew point temperature, and the moisture interference has great influence on the detection result of the insertion type smoke dust instrument on the smoke dust capacity, so that the measurement cannot be carried out.
SUMMERY OF THE UTILITY MODEL
The utility model mainly solves the technical problems existing in the prior art and provides a jet sampling and smoke heating extraction type smoke dust detector.
In order to realize the purpose, the utility model adopts the following technical scheme that the removable smoke dust detector adopting the jet flow sampling and flue gas heating method comprises an equipment box which is a rectangular hollow box, a detection device is arranged in the equipment box and comprises a smoke dust instrument controller, a probe, a smoke dust instrument, a fan, a jet flow chamber and a heating device, wherein the smoke dust instrument and the smoke dust instrument controller are fixedly arranged on the side wall and are connected through leads, the heating device and the jet flow chamber are connected through pipelines, the heating device and the jet flow chamber are fixedly arranged on the inner wall of the equipment box, the smoke dust instrument is communicated with the probe through a pipeline, the fan is communicated with the probe through a pipeline, a flange interface is additionally arranged in the refitting process of the smoke dust instrument, the smoke dust instrument is inserted into the flue gas inlet and outlet channel of the jet flow chamber and is connected with the jet flow chamber in a flange mode, the smoke dust instrument is sealed with the jet flow chamber through the high-temperature rubber pad, the lower opening of the jet flow chamber is provided with a hasp interface for connection of the jet flow device, the upper opening of the jet flow chamber is matched with a PTEE material to be processed into a connecting piece to be connected with a discharge port of the heating device, the throat hoop is fixed, the PTEE connecting piece is further provided with an insertion type thermal resistor mounting hole for mounting of a scattering temperature thermal resistor, the PTEE material for the jet flow chamber is manufactured according to the jet flow principle and is connected with the jet flow chamber in a hasp mode, the probe adopts a customized probe which is made of PVDF and is in flange connection with a flue, and the heater of the heating device adopts a low-energy-consumption high-.
Preferably, the heating device adopts a protective shell with heat preservation performance, the protective shell is made of environment-friendly heat insulation cotton materials, and the protective shell is customized according to the structural sizes of the heating chamber and the heater.
Preferably, the thermal resistor of the heater is installed in a customized and vertical surface-mounted mode, a three-wire PT one-thousand lead is adopted, and the PTEE is high-temperature resistant, so that the service life of equipment is prolonged conveniently.
Preferably, the jet chamber thermal resistor is a customized thermal resistor, the thermal resistor is installed in the jet chamber in an insertion manner, the lower end of the heating device is connected with an air inlet pipe, and the air inlet pipe is used for connecting the probe with an air inlet of the heating chamber.
Preferably, the air inlet pipe is made of high-temperature-resistant, acid-base-resistant and silica gel deformation-resistant pipe and is fixed in a hose clamp mode, a fixing plate is fixedly mounted on the side wall inside the equipment box, and the air inlet pipe and the probe are fixedly mounted on the fixing plate.
Advantageous effects
The utility model provides a jet sampling and smoke heating method extraction formula smoke and dust detector. The method has the following beneficial effects:
(1) the smoke sampling is carried out by controlling the fan, and the smoke passes through the probe, the pipeline, the heating device, the smoke detector and the jet sampling device and finally returns to the exhaust port of the probe. After the smoke is continuously collected and heated, the smoke dust meter continuously detects the smoke dust value on line in real time.
(2) This efflux sampling and smoke heating method extraction formula smoke and dust detector, the rack installation is concentrated to instrument essential element, and it is simple nevertheless firm to connect between each part for installation, transport, debugging and maintenance are convenient, improve work efficiency.
(3) This efflux sampling and smoke heating method extraction formula smoke and dust detector, whole high temperature resistant, the corrosion resistant design of sampling passageway has increased life and reliability, and the high temperature resistant design of wire and cable has improved the use reliability.
(4) When the instrument is started, the heater is firstly heated to 260 ℃, then the fan is started to jet and sample, and the smoke passes through the probe, the heating device, the smoke instrument and the jet device and finally passes through the return probe and the return flue, so that the whole process is free of leakage and environment-friendly. The temperature of the scattering chamber of the smoke dust instrument is automatically controlled to be 150-160 ℃, the temperature of sampled smoke is controlled to be far higher than the dew point temperature, the measurement cannot be interfered, and the operation is reliable.
(5) This efflux sampling and flue gas heating method extraction formula smoke and dust detector, the online continuous measurement of smoke and dust appearance dirt concentration corresponds 4-20ma standard signal, and can supply modbus485 digital signal concurrently, and the interface standard is connected conveniently, and the selectivity is strong.
(6) The smoke dust detector adopting the jet flow sampling and smoke heating method has the advantages that the smoke dust detector can measure low-temperature high-humidity smoke gas, and the reliability and the accuracy of the measurement of the smoke dust concentration in the smoke gas emission of the coal-fired gas power plant are greatly improved.
Drawings
Fig. 1 is an overall schematic view of the present invention;
fig. 2 is a working principle diagram of the present invention.
Illustration of the drawings:
1 equipment box, 2 smoke instrument controllers, 3 smoke instruments, 4 heating devices, 5 jet flow chambers, 6 fans, 7 fixing plates, 8 air inlet pipes and 9 probes.
Detailed Description
The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.
Example (b): a jet flow sampling and smoke heating method extraction type smoke detector is shown in figures 1-2 and comprises an equipment box 1, wherein the equipment box 1 is a rectangular hollow box, a detection device is arranged inside the equipment box 1 and comprises a smoke detector controller 2, a probe 9, a smoke detector 3, a fan 6, a jet flow chamber 5 and a heating device 4, and signals transmitted inside the detection device are (4-20) ma standard signals and can be used for (modbus485) digital quantity signals.
The smoke and dust appearance 3 and the equal fixed mounting of smoke and dust appearance controller 2 just smoke and dust appearance 3 and smoke and dust appearance controller 2 pass through the wire and connect on the lateral wall of 1, heating device 4 and efflux room 5 pass through the pipe connection and the equal fixed mounting of heating device 4 and efflux room 5 is on the inner wall of equipment box 1, smoke and dust appearance 3 passes through the pipeline and communicates with probe 9, efflux room 5 passes through the pipeline with probe 9 and communicates, fan 6 passes through the pipeline with probe 9 and communicates.
The model of the smoke dust instrument controller 2 is PLC of Siemens S7200, the model of the smoke dust instrument 3 is SP100, the smoke dust instrument 3 is modified to be provided with an additional flange interface, the smoke dust instrument 3 is inserted into a smoke inlet and outlet channel of the jet flow chamber 5 and is connected with the jet flow chamber 5 in a flange mode, and the smoke dust instrument 3 and the jet flow chamber 5 are sealed by a high-temperature rubber pad;
the jet flow chamber 5 is made of 316L stainless steel, a hasp connector is designed at the lower opening of the jet flow chamber 5 and used for connecting a jet flow device, a PTEE material is matched with the upper opening of the jet flow chamber 5 and processed into a connecting piece to be connected with a discharge opening of the heating device 4, the throat hoop is fixed, and an insertion type thermal resistor mounting hole is also designed on the PTEE connecting piece and used for mounting a scattering temperature thermal resistor.
The jet flow chamber 5 is made of PTEE materials according to the jet flow principle, the protective shell is made of 316L stainless steel, and the jet flow chamber 5 is connected with the protective shell in a hasp mode.
The probe 9 is a customized probe made of PVDF (polyvinylidene fluoride), the probe 9 is connected with a flue flange, and the flange is of a size.
The heating chamber in the heating device 4 is made of 316L stainless steel, and is designed in a rotational flow mode.
The heater of the heating device 4 adopts a low-energy consumption and high-heat-generation design
The heater thermal resistance adopts customization, and perpendicular SMD mounting means adopts three-wire system PT one thousand wires, and PTEE is high temperature resistant, is convenient for increase the life of equipment.
5 thermal resistance in efflux chamber adopts the customization thermal resistance, and the thermal resistance is bayonet installs in the inside of efflux chamber 5, heating device 4's lower extreme is connected with air-supply line 8, and air-supply line 8 is used for connecting probe and heating chamber air inlet, and the material of air-supply line 8 is that high temperature and acid and alkali-resistance silica gel prevents the deformation pipe and fix through the mode of larynx hoop, fixed mounting has fixed plate 7 on 1 inside lateral wall of equipment box, and air-supply line 8 and probe 9 fixed mounting are on fixed plate 7.
The utility model discloses a theory of operation:
when the instrument is started, the heater is firstly heated to 260 ℃, then the fan is started to jet and sample, smoke passes through the probe, the heating device, the smoke dust instrument, the jet device and finally the return probe and returns to the flue, and the whole process has no leakage and is environment-friendly. The temperature of the scattering chamber of the smoke dust instrument is automatically controlled to be 150-160 ℃, the temperature of sampled smoke is controlled to be far higher than the dew point temperature, the measurement cannot be interfered, and the operation is reliable.
The general design has automatic function of sweeping, and the maintenance work that significantly reduces.
The smoke dust instrument measures the 4-20ma standard signal corresponding to the dust concentration on line continuously, and can supply modbus485 digital quantity signals at the same time, the interface is standard, the connection is convenient, and the selectivity is strong.
The utility model discloses it becomes possible to measure low temperature high humidity flue gas, improves coal fired gas power plant fume emission smoke and dust concentration measurement reliability and accuracy greatly.
Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above-described embodiments, and many modifications are possible. Any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should be considered as belonging to the protection scope of the present invention.
Claims (6)
1. The utility model provides a efflux sampling and smoke heating method extraction formula smoke and dust detector, includes equipment box (1), its characterized in that: the equipment box (1) is a rectangular hollow box, a detection device is arranged inside the equipment box (1), and the detection device comprises a smoke and dust instrument controller (2), a probe (9), a smoke and dust instrument (3), a fan (6), a jet flow chamber (5) and a heating device (4);
the smoke and dust instrument (3) is modified to be provided with a flange interface, the smoke and dust instrument (3) is inserted into a smoke inlet and outlet channel of the jet flow chamber (5) and connected with the jet flow chamber (5) in a flange mode, and the smoke and dust instrument (3) and the jet flow chamber (5) are sealed through a high-temperature rubber gasket;
the lower opening of the jet flow chamber (5) is provided with a hasp interface for connecting a jet flow device, the upper opening of the jet flow chamber (5) is matched with a PTEE material to be processed into a connecting piece to be connected with a discharge opening of the heating device (4), the throat hoop is fixed, and the PTEE connecting piece is also provided with an insertion type thermal resistor mounting hole;
the probe (9) is a customized probe made of PVDF (polyvinylidene fluoride), the probe (9) is connected with a flue flange, and the flange is of a size;
jet current room (5) thermal resistance adopts the customization thermal resistance, and the thermal resistance is bayonet installs in the inside of jet current room (5), the lower extreme of heating device (4) is connected with air-supply line (8), and air-supply line (8) are used for connecting probe and heating chamber air inlet, and the material of air-supply line (8) is high temperature resistant acid and alkali-resistance silica gel deformation prevention pipe and fixed through the mode of larynx hoop.
2. The extraction type smoke detector adopting the jet flow sampling and flue gas heating method as claimed in claim 1, wherein: the smoke and dust appearance (3) and the smoke and dust appearance controller (2) are fixedly installed on the side wall of the equipment box (1) and the smoke and dust appearance (3) and the smoke and dust appearance controller (2) are connected through a wire.
3. The extraction type smoke detector adopting the jet flow sampling and flue gas heating method as claimed in claim 1, wherein: the heating device (4) and the jet flow chamber (5) are connected through a pipeline, the heating device (4) and the jet flow chamber (5) are fixedly mounted on the inner wall of the equipment box (1), the smoke dust instrument (3) is communicated with the probe (9) through a pipeline, the jet flow chamber (5) is communicated with the probe (9) through a pipeline, and the fan (6) is communicated with the probe (9) through a pipeline.
4. The extraction type smoke detector adopting the jet flow sampling and flue gas heating method as claimed in claim 1, wherein: the jet flow chamber (5) is made of PTEE materials according to the jet flow principle and is connected with the jet flow chamber (5) in a hasp mode.
5. The extraction type smoke detector adopting the jet flow sampling and flue gas heating method as claimed in claim 1, wherein: the heater of heating device (4) adopts the design that generates heat with low power consumption height, heating device (4) adopt the protecting sheathing who possesses thermal insulation performance, and this protecting sheathing adopts the cotton material preparation of environmental protection heat insulation, according to heating chamber and heater structure size customization.
6. The extraction type smoke detector adopting the jet flow sampling and flue gas heating method as claimed in claim 1, wherein: a fixing plate (7) is fixedly mounted on the side wall inside the equipment box (1), and the air inlet pipe (8) and the probe (9) are fixedly mounted on the fixing plate (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922114148.9U CN211317900U (en) | 2019-11-29 | 2019-11-29 | Jet sampling and smoke heating method extraction type smoke detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922114148.9U CN211317900U (en) | 2019-11-29 | 2019-11-29 | Jet sampling and smoke heating method extraction type smoke detector |
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| Publication Number | Publication Date |
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| CN211317900U true CN211317900U (en) | 2020-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922114148.9U Active CN211317900U (en) | 2019-11-29 | 2019-11-29 | Jet sampling and smoke heating method extraction type smoke detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113008749A (en) * | 2021-03-17 | 2021-06-22 | 南京传积兴自动化科技有限公司 | Ultra-low temperature formula smoke detection system of breathing in |
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2019
- 2019-11-29 CN CN201922114148.9U patent/CN211317900U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113008749A (en) * | 2021-03-17 | 2021-06-22 | 南京传积兴自动化科技有限公司 | Ultra-low temperature formula smoke detection system of breathing in |
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