CN218980495U

CN218980495U - Flue gas drainage device and flue gas detector

Info

Publication number: CN218980495U
Application number: CN202223591412.6U
Authority: CN
Inventors: 庞艳; 何军; 杨青青
Original assignee: SHENZHEN AMAE CO Ltd
Current assignee: SHENZHEN AMAE CO Ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-05-09
Anticipated expiration: 2032-12-27

Abstract

The utility model discloses a smoke drainage device and a smoke detector, which comprises an electrochemical sensor component and a peristaltic pump, wherein the electrochemical sensor component comprises a front plywood, a rear plywood and a plurality of sensors, the front plywood and the rear plywood are respectively provided with a plurality of sensor mounting ports, all the sensor mounting ports are communicated through air passages, the sensors are mounted in one-to-one correspondence with the sensor mounting ports, the front plywood is provided with an air inlet, an air outlet, a drainage passage and a water outlet, the air inlet and the air outlet are respectively arranged at the head end and the tail end of the air passage, the two ends of the drainage passage are respectively communicated with the air passage and the water outlet, and the front plywood and the rear plywood enclose the sensors, the drainage passage and the air passages to seal; the peristaltic pump is communicated with the water outlet. The fume drainage device is provided with the peristaltic pump for draining condensed water in the air passage through the water drain outlet, so that the service life of the sensor is prolonged, and the accuracy of a detection result is improved.

Description

Flue gas drainage device and flue gas detector

Technical Field

The utility model relates to the technical field of smoke and dust and smoke sampling detection equipment, in particular to a smoke and smoke drainage device and a smoke detector.

Background

The emission of industrial flue gas is strictly in accordance with the national emission standard, and the content of each pollutant in the flue gas emitted by the industrial flue gas is mainly measured automatically by referring to a flue gas analyzer. The flue gas analyzer is equipment for continuously analyzing and measuring the contents of flue gas such as O2, CO2, CO, NOx, SO, H2S and the like by utilizing an electrochemical sensor, and is mainly used for environmental monitoring near the pollution emission or pollution sources of small-sized fuel oil and gas boilers. When analyzing the content of various pollutants in the flue gas, a proper amount of flue gas needs to be taken out from a flue gas pipeline of a boiler, fuel oil equipment and the like, and then the flue gas is measured by using a flue gas analyzer. When the existing flue gas analyzer adopts an electrochemical sensor to measure and analyze high-temperature flue gas, a plurality of sensors are generally arranged to respectively measure O2, CO2, CO, NOx, SO and H2S, and when the high-temperature flue gas enters the sensors, the temperature difference between the sensors and the flue gas is large, and the flue gas is easy to liquefy in the sensors when encountering cold, so that the sensors cannot work normally or the measurement and analysis results are inaccurate, and the service life of the sensors is also reduced.

Disclosure of Invention

The utility model aims to provide a smoke drainage device and a smoke detector with drainage function, which can prolong the service life of a sensor and improve the accuracy of detection results.

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows: the utility model discloses a flue gas drainage device, including electrochemical sensor subassembly and peristaltic pump, electrochemical sensor subassembly includes preceding plywood, back plywood and a plurality of sensor, all be equipped with a plurality of sensor installing ports on preceding plywood and the back plywood, all sensor installing ports are through the air flue setting of communicating, sensor and sensor installing ports one-to-one installation, be equipped with air inlet, gas outlet, drainage way and outlet on the preceding plywood, air inlet, gas outlet are located the head end and the terminal of air flue respectively, the both ends of drainage way communicate with air flue, outlet respectively and set up, preceding plywood and back plywood enclose and close sensor, drainage way and air flue and seal; the peristaltic pump is communicated with the water outlet.

Preferably, the number of the sensor mounting openings exceeds two, the sensor mounting openings comprise a first mounting opening and a second mounting opening, the air inlet is communicated with the first mounting opening, two water drains are arranged, the head ends of the two water drains are respectively communicated with the first mounting opening and the second mounting opening, and the tail ends of the two water drains are communicated with the water outlet.

Preferably, an air inlet slope is arranged at the sensor mounting port and is used for lifting the air flow and then entering the sensor; the inclination angle of the air inlet slope is in a range of more than 0 DEG and less than 90 deg.

Preferably, the inclination angle of the intake slope ranges from 10 ° to 20 °.

Preferably, the inclination angle of the air inlet slope is 14 °.

In addition, the utility model also provides a smoke detector, which comprises the smoke drainage device and an instrument body, wherein the instrument body is provided with a smoke inlet nozzle, the instrument body is internally provided with a diaphragm pump, the smoke drainage device is arranged in the instrument body, and the diaphragm pump is respectively communicated with the smoke inlet nozzle and the air inlet.

The beneficial effects of the utility model are as follows: according to the flue gas drainage device disclosed by the utility model, flue gas enters the electrochemical sensor assembly through the air inlet, then passes through the plurality of sensors one by one through the air passage, finally is discharged from the air outlet, the flue gas is liquefied in the air passage when meeting cold to form condensed water, and the peristaltic pump discharges the condensed water in the air passage through the water outlet, so that the service life of the sensors is prolonged, and the accuracy of detection results is improved.

The utility model will become more apparent from the following description taken in conjunction with the accompanying drawings which illustrate embodiments of the utility model.

Drawings

FIG. 1 is a schematic diagram of a flue gas drain;

FIG. 2 is a schematic view of the front plate of FIG. 1;

FIG. 3 is a cross-sectional view of A-A of FIG. 2;

fig. 4 is a schematic diagram of the structure of the smoke detector.

Detailed Description

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 to 3, a flue gas drainage device comprises an electrochemical sensor assembly 560 and a peristaltic pump 570, wherein the electrochemical sensor assembly 560 comprises a front plate 561, a rear plate 562 and a plurality of sensors 563, a plurality of sensor mounting ports 565 are formed in the front plate 561 and the rear plate 562, all the sensor mounting ports 565 are communicated through an air flue 564, the sensors 563 are mounted in one-to-one correspondence with the sensor mounting ports 565, an air inlet 567, an air outlet 568, a drainage channel 572 and a drainage outlet 571 are formed in the front plate 561, the air inlet 567 and the air outlet 568 are respectively arranged at the head end and the tail end of the air flue 564, two ends of the drainage channel 572 are respectively communicated with the air flue 564 and the drainage outlet 571, and the front plate 561 and the rear plate 562 enclose the sensors 563, the drainage channel 572 and the air flue 564 to be sealed; the peristaltic pump 570 is disposed in communication with the drain 571. The sensor 563 may employ an O2 sensor, an SO2 sensor, an NO2 sensor, a CO2 sensor, or an H2S sensor, and the number of sensors may be configured according to the kind to be measured. Each sensor 563 is correspondingly installed in the sensor installation opening 565, the front plywood 561 and the rear plywood 562 enclose the sensor 563, the drainage channel 572 and the air channel 564 to be sealed, so that flue gas enters the electrochemical sensor assembly 560 through the air inlet 567, then passes through the air channels 564 one by one through the plurality of sensors 563, finally is discharged from the air outlets 568, the flue gas is liquefied to form condensed water in the air channels 564 when being cooled, and the peristaltic pump 570 discharges the condensed water in the air channels 564 through the water outlet 571, thereby prolonging the service life of the sensors 563 and improving the accuracy of detection results.

In one embodiment, the number of the sensor mounting openings 565 is more than two, the sensor mounting openings 565 include a first mounting opening and a second mounting opening, the air inlet 567 is communicated with the first mounting opening, the number of the water drains 572 is two, the head ends of the two water drains 572 are respectively communicated with the first mounting opening and the second mounting opening, and the tail ends of the two water drains 572 are both communicated with the water outlet 571. Through multiple experiments, it is found that when the flue gas flows through the plurality of sensors 563 through the air flue 564, the high-temperature flue gas is mainly concentrated at the first sensor 563 and the second sensor 563 and is liquefied most when encountering cold, and the reason is probably that after the high-temperature flue gas is liquefied when encountering cold at the first sensor 563 and the second sensor 563, the temperature of the flue gas is gradually reduced, the temperature difference between the flue gas after the temperature reduction and the following sensors 563 is not very large, and condensed water is less formed when the other subsequent sensors 563 are liquefied when encountering cold. Therefore, in order to drain the main condensate at the fastest speed, two drains 572 are provided, the first ends of the two drains 572 are respectively connected to the first mounting port and the second mounting port, the ends of the two drains 572 are respectively connected to the drain 571, the peristaltic pump 570 drains the condensate concentrated at the first and second sensors 563 through the drain 571 and the two drains 572, and of course, after the condensate at one and the second sensors 563 is drained, the peristaltic pump 570 continues to operate, and a small amount of condensate at the other sensor mounting ports 565 flows back to the drain 571 along the air passages 564 and is then drained. As shown in fig. 2, the first and second sensors 563 and the drain port 571 have a triangular shape, so that condensed water at the first and second sensors 563 can be more conveniently drained.

In one embodiment, an air inlet slope 566 is arranged at the sensor mounting port 565, and the air inlet slope 566 is used for lifting the air flow and then entering the sensor 563; the intake ramp 566 has an inclination angle in the range of greater than 0 ° and less than 90 °. As shown in fig. 1 to 3, the flue gas enters the first sensor 563, or enters other sensors 563 along the air flue 564, the flue gas needs to turn 90 ° to enter the sensors 563, and through multiple experiments, it is found that the amount of the flue gas entering the sensors 563 is relatively small, so that the measured data of the sensors 563 are not accurate enough, and therefore, an air inlet slope 566 is provided at the sensor mounting opening 565, the air inlet slope 566 is used for lifting the air flow and then entering the sensors 563, and the inclination angle range of the air inlet slope 566 is larger than 0 ° and smaller than 90 °.

In one embodiment, the intake ramp 566 is angled in the range of 10 ° to 20 °.

In one embodiment, the intake ramp 566 is angled at 14 °. Through multiple experiments, the inclination angle of the air inlet slope 566 is 14 degrees, the flue gas enters the sensor 563, and the data measured by the sensor 563 are more accurate.

In addition, the utility model also provides a smoke detector, which comprises the smoke drainage device as described above, referring to fig. 4, and further comprises an instrument body 500, wherein the instrument body 500 is provided with a smoke inlet nozzle 520, a diaphragm pump 580 is further arranged in the instrument body 500, the smoke drainage device is arranged in the instrument body 500, and the diaphragm pump 580 is respectively communicated with the smoke inlet nozzle 520 and an air inlet 567. The diaphragm pump 580 operates to draw in the flue gas from the flue gas inlet nozzle 520 and then to drive the flue gas into the electrochemical sensor assembly 560 through the air inlet 567 for measurement.

The foregoing description of the preferred embodiments of the present utility model is not intended to limit the scope of the claims, which follow, as defined in the claims.

Claims

1. The flue gas drainage device is characterized by comprising an electrochemical sensor assembly and a peristaltic pump, wherein the electrochemical sensor assembly comprises a front plywood, a rear plywood and a plurality of sensors, a plurality of sensor mounting ports are formed in the front plywood and the rear plywood, all the sensor mounting ports are communicated through air passages, the sensors are mounted in one-to-one correspondence with the sensor mounting ports, an air inlet, an air outlet, a drainage channel and a drainage outlet are formed in the front plywood, the air inlet and the air outlet are respectively formed in the head end and the tail end of the air passage, the two ends of the drainage channel are respectively communicated with the air passage and the drainage outlet, and the front plywood and the rear plywood enclose the sensors, the drainage channel and the air passage to be sealed; the peristaltic pump is communicated with the water outlet.

2. The flue gas drainage device according to claim 1, wherein the number of the sensor mounting openings exceeds two, the sensor mounting openings comprise a first mounting opening and a second mounting opening, the air inlet is communicated with the first mounting opening, the number of the drainage channels is two, the head ends of the two drainage channels are respectively communicated with the first mounting opening and the second mounting opening, and the tail ends of the two drainage channels are communicated with the water outlet.

3. A flue gas drain as defined in claim 1, wherein an air intake slope is provided at the sensor mounting port, the air intake slope being used to lift the air flow before it enters the sensor; the inclination angle of the air inlet slope is in a range of more than 0 DEG and less than 90 deg.

4. A flue gas drain according to claim 3, wherein the inlet ramp has an inclination angle in the range of 10 ° to 20 °.

5. A flue gas drain as defined in claim 4, wherein said inlet ramp is inclined at an angle of 14 °.

6. A smoke detector, characterized in that the smoke detector comprises the smoke drainage device according to any one of claims 1-5, and further comprises an instrument body, wherein a smoke inlet nozzle is arranged on the instrument body, a diaphragm pump is further arranged in the instrument body, the smoke drainage device is arranged in the instrument body, and the diaphragm pump is respectively communicated with the smoke inlet nozzle and an air inlet.