CN219777613U

CN219777613U - Boiler flue gas detection device

Info

Publication number: CN219777613U
Application number: CN202320871473.3U
Authority: CN
Inventors: 王立艳
Original assignee: Xi'an Teke Testing And Research Institute Co ltd
Current assignee: Xi'an Teke Testing And Research Institute Co ltd
Priority date: 2023-04-18
Filing date: 2023-04-18
Publication date: 2023-09-29
Anticipated expiration: 2033-04-18

Abstract

The utility model belongs to the technical field of flue gas detection equipment, and particularly relates to a boiler flue gas detection device, which comprises a flue gas inlet pipe, wherein the flue gas inlet pipe is connected with a filtering mechanism, the filtering mechanism is sequentially communicated with a heat supplementing chamber, a first condenser, a second condenser and a detection chamber through pipelines, the upper and lower positions of the side wall of the heat supplementing chamber are divided into a water outlet and a water inlet, and the positions of the heat supplementing chamber corresponding to the water outlet and the water inlet are respectively communicated with a heating chamber through pipelines; the flue gas detector is arranged in the detection chamber, a flue gas outlet of the detection chamber is connected with a three-way joint through a pipeline, the other two ends of the three-way joint are respectively connected with a flue gas exhaust pipe and a purifying pipe, the purifying pipe is communicated with a purifying device, and a purifying agent is arranged in the purifying device. The utility model can remove the moisture and dust carried in the high-temperature flue gas, ensure the detection accuracy and ensure the normal operation of the flue gas detector.

Description

Boiler flue gas detection device

Technical Field

The utility model belongs to the technical field of flue gas detection equipment, and particularly relates to a boiler flue gas detection device.

Background

The boiler is an energy conversion device, the energy input to the boiler is chemical energy and electric energy in fuel, and the boiler outputs steam, high temperature water or organic heat carrier with certain heat energy. The boiler comprises a boiler and a furnace. The hot water or steam generated in the boiler can directly provide heat energy required by industrial production and people living, and can also be converted into mechanical energy through a steam power device or converted into electric energy through a generator. The boiler for supplying hot water is called a hot water boiler, and is mainly used for life and has a small amount of application in industrial production. Steam generating boilers are called steam boilers, often referred to simply as boilers, and are used in many thermal power stations, ships, locomotives and industrial and mining enterprises.

Various industrial boilers, power station boilers and civil boilers for burning coal can generate a large amount of flue gas, the flue gas contains a large amount of sulfur dioxide, carbon monoxide, hydrocarbon, nitric oxide and photochemical smog, and the flue gas is discharged into the atmosphere without treatment, so that serious pollution is caused to the environment, and the detection of the flue gas of the boiler is very important. The direct detection of the high-temperature flue gas can damage an original in the flue gas detector, and the detection accuracy is affected, so that the flue gas is often subjected to cooling treatment before the detection of the flue gas in the prior art, for example, the patent with the application number of CN202020881515.8 adopts a natural cold air source to cool the high-temperature flue gas, and then the cooled flue gas is sent to the flue gas detector for measurement; but the sampled high-temperature flue gas is usually provided with a large amount of dust and moisture, the moisture in the high-temperature flue gas is condensed by direct cooling treatment, and condensed water drops are brought into a flue gas detector to cause the flue gas detector to be broken down easily, so that equipment is damaged.

Disclosure of Invention

The utility model aims to provide a boiler flue gas detection device which can remove moisture and dust carried in high-temperature flue gas, ensure the detection accuracy and ensure the normal operation of a flue gas detector.

The technical scheme adopted by the utility model is that the boiler flue gas detection device comprises a flue gas inlet pipe, wherein the flue gas inlet pipe is connected with a filtering mechanism, the filtering mechanism is sequentially communicated with a heat supplementing chamber, a first condenser, a second condenser and a detection chamber through pipelines, the upper end and the lower end of the side wall of the heat supplementing chamber are respectively provided with a water inlet and a water outlet, and the positions of the heat supplementing chamber corresponding to the water inlet and the water outlet are respectively communicated with a heating chamber through pipelines;

the smoke detector is arranged in the detection chamber, a smoke outlet of the detection chamber is connected with a three-way joint through a pipeline, the other two ends of the three-way joint are respectively connected with a smoke exhaust pipe and a purifying pipe, the purifying pipes are communicated with a purifying device, and a purifying agent is arranged in the purifying device.

Further, a spiral tube is arranged in the heat supplementing chamber, one end of the spiral tube is communicated with the filtering mechanism, the other end of the spiral tube is communicated with the first condenser, and the heat preservation layer is wrapped outside a communication pipeline between the filtering mechanism and the spiral tube and a communication pipeline between the spiral tube and the first condenser.

Furthermore, a circulating pump is arranged on a pipeline for communicating the water inlet of the heat supplementing chamber with the heating chamber, and a stop valve is arranged on a pipeline for communicating the water outlet of the heat supplementing chamber with the heating chamber; a plurality of partition boards are arranged in the heating chamber in a staggered mode, S-shaped channels are formed in the heating chamber by the partition boards, and one end of each partition board is fixedly connected with the inner wall of the heating chamber.

Further, an electric heating pipe is arranged between two adjacent partition boards, and one end of the electric heating pipe is fixedly connected with the inner wall of the heating chamber.

Further, the filtering mechanism comprises a shell, an air inlet and an air outlet are formed in the opposite side walls of the shell, an exhaust fan is arranged at the position, corresponding to the air outlet, of the shell, and the exhaust fan is connected with the side walls of the shell; the inside of the shell is provided with a primary filter plate, a secondary filter plate and filter cloth in sequence according to the flow direction of smoke inlet, and the primary filter plate, the secondary filter plate and the filter cloth are fixedly connected with the inner wall of the shell.

Further, the diameters of the filtering particles of the primary filtering plate, the secondary filtering plate and the filtering cloth are gradually reduced; the side wall of the shell is provided with a cleaning opening near the bottom, and the cleaning opening is positioned between the air inlet and the primary filter plate.

Further, the bottom of the first condenser is connected with a peristaltic pump a through a pipeline, and the bottom of the second condenser is connected with a peristaltic pump b through a pipeline.

Further, a sampling pump is arranged on a pipeline communicated with the detection chamber of the second condenser.

Further, the flue gas detector penetrates through the side wall of the detection chamber, the detection head of the flue gas detector is located in the detection chamber, and the display mechanism of the flue gas detector is located outside the detection chamber.

Further, an electromagnetic valve a is arranged on the smoke exhaust pipe, and an electromagnetic valve b is arranged on the purifying pipe; one end of the purifying pipe, which is far away from the three-way joint, extends into the bottom of the purifying device, and the top of the purifying device is provided with an exhaust port.

Compared with the prior art, the utility model has the beneficial effects that,

(1) The filtering mechanism of the utility model removes dust in the smoke through spraying water mist and the double condensers quickly liquefies and removes the moisture in the smoke, the sampling pump sends the smoke with dust and moisture removed into the detection chamber, the smoke which is detected to reach the standard is directly discharged through the smoke discharge pipe, and the smoke which is not detected to reach the standard is discharged through the exhaust port after being washed by the purifying agent in the purifying device; ensure to detect the normal work of smoke detector when the accuracy nature.

(2) According to the utility model, the heat preservation layer and the heat supplementing chamber are arranged to enable the flue gas to keep high temperature before reaching the first condenser, so that moisture is not separated out, detection components such as sulfur dioxide are not lost, the flue gas is condensed through the double condensers, liquid water generated by condensing the flue gas is rapidly pumped out through the peristaltic pump, the water removing effect is good, meanwhile, the loss of components to be detected such as sulfur dioxide in the flue gas is avoided to the greatest extent, and the accuracy of the detection result is ensured.

Drawings

FIG. 1 is a schematic diagram of a boiler flue gas detection device according to the present utility model;

fig. 2 is a schematic structural view of a filtering mechanism in a boiler flue gas detecting device according to the present utility model.

In the figure, the smoke inlet pipe is 1, the filtering mechanism is 2, the insulating layer is 4, the supplementing chamber is 5, the spiral pipe is 6, the circulating pump is 7, the heating chamber is 8, the partition board is 9, the electric heating pipe is 10, the stop valve is 11, the first condenser is 12, the peristaltic pump a is 13, the second condenser is 14, the peristaltic pump b is 15, the sampling pump is 16, the smoke detector is 17, the detecting chamber is 18, the three-way joint is 19, the smoke exhaust pipe is 20, the electromagnetic valve a is 21, the purifying pipe is 22, the electromagnetic valve b is 23, the purifying device is 24, the exhaust port is 25, the air inlet is 26, the air outlet is 27, the exhaust fan is 28, the primary filter plate is 29, the secondary filter plate is 30, and the filtering cloth is 31.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1, the structure of the boiler flue gas detection device comprises a flue gas inlet pipe 1, wherein the flue gas inlet pipe 1 is connected with a filtering mechanism 2, the filtering mechanism 2 is sequentially communicated with a heat supplementing chamber 4, a first condenser 11, a second condenser 13 and a detection chamber 17 through pipelines, a spiral pipe 5 is arranged in the heat supplementing chamber 4, one end of the spiral pipe 5 is communicated with the filtering mechanism 2, the other end of the spiral pipe 5 is communicated with the first condenser 11, the time for passing the flue gas in the heat supplementing chamber 4 is prolonged by the spiral pipe 5, so that the flue gas can be fully supplemented with heat, and heat preservation layers 3 are wrapped outside a communicating pipeline of the filtering mechanism 2 and the spiral pipe 5 and a communicating pipeline of the spiral pipe 5 and the first condenser 11, so that the high temperature of the flue gas is maintained before the flue gas enters the first condenser 11.

The upper end and the lower end of the side wall of the heat supplementing chamber 4 are respectively provided with a water inlet and a water outlet, the positions of the heat supplementing chamber 4 corresponding to the water outlet and the water inlet are respectively communicated with a heating chamber 7 through pipelines, and heat transfer medium capable of being directly heated circulates in the pipelines; a circulating pump 6 is arranged on a pipeline for communicating the water inlet of the heat supplementing chamber 4 with the heating chamber 7, a stop valve 10 is arranged on a pipeline for communicating the water outlet of the heat supplementing chamber 4 with the heating chamber 7, and heat transfer medium circulates in the heat supplementing chamber 4 and the heating chamber 7; a plurality of baffle plates 8 are arranged in the heating chamber 7 in a staggered way, a plurality of baffle plates 9 form an S-shaped channel in the heating chamber 7, one end of each baffle plate 9 is fixedly connected with the inner wall of the heating chamber 7, an electric heating pipe 9 is arranged between two adjacent baffle plates 8, and one end of each electric heating pipe 9 is fixedly connected with the inner wall of the heating chamber 7.

The bottom of the first condenser 11 is connected with a peristaltic pump a12 through a pipeline, the bottom of the second condenser 13 is connected with a peristaltic pump b14 through a pipeline, and the peristaltic pump a12 and the peristaltic pump b14 aim at timely discharging condensed water in the condensers; the second condenser 13 is provided with a sampling pump 15 on a pipeline communicated with the detection chamber 17, and the flue gas after the moisture removal is sent into the detection chamber 17.

The flue gas detector 16 is arranged in the detection chamber 17, the flue gas detector 16 penetrates through the side wall of the detection chamber 17, a detection head of the flue gas detector 16 is positioned in the detection chamber 17, a display mechanism of the flue gas detector 16 is positioned at the outer side of the detection chamber 17, and a worker can directly check whether flue gas to be detected meets emission standards or not conveniently. The smoke outlet of the detection chamber 17 is connected with a three-way joint 18 through a pipeline, the other two ends of the three-way joint 18 are respectively connected with a smoke discharge pipe 19 and a purifying pipe 21, and the smoke discharge pipe 19 and the purifying pipe 21 are respectively provided with an electromagnetic valve a20 and an electromagnetic valve b22.

The purifying tube 21 is communicated with a purifying device 23, one end of the purifying tube 21 far away from the three-way joint 18 stretches into the bottom of the purifying device 23, a purifying agent is filled in the purifying device 23, an exhaust port 24 is formed in the top of the purifying device 23, namely, flue gas entering the purifying device 23 through the purifying tube 21 reacts before the purifying agent, and harmful substances in the flue gas are removed and then discharged.

As shown in fig. 2, the filtering mechanism 2 comprises a shell, an air inlet 25 and an air outlet 26 are formed in opposite side walls of the shell, the position of the shell corresponding to the air inlet 25 is connected with the flue gas inlet pipe 1, an exhaust fan 27 is arranged at the position of the shell corresponding to the air outlet 26, and the exhaust fan 27 is connected with the side walls of the shell; the inside of the shell is sequentially provided with a primary filter plate 28, a secondary filter plate 29 and a filter cloth 30 according to the flow direction of the smoke, and the primary filter plate 28, the secondary filter plate 29 and the filter cloth 30 are fixedly connected with the inner wall of the shell, so that the smoke can enter the heat supplementing chamber 4 after being gradually filtered by the primary filter plate 28, the secondary filter plate 29 and the filter cloth 30; in order to secure a better dust filtering effect, the filter particle diameters of the primary filter plate 28, the secondary filter plate 29 and the filter cloth 30 are gradually reduced.

A cleaning opening 31 is formed in the side wall of the shell and close to the bottom, the cleaning opening 31 is positioned between the air inlet 25 and the first-stage filter plate 28, and the cleaning opening 31 can be opened to clean dust falling on the bottom of the shell after the filter mechanism 2 is used for a period of time; cleaning ports 31 may be provided between the primary filter plate 28 and the secondary filter plate 29 and between the secondary filter plate 29 and the filter cloth 30 to clean dust between the primary filter plate 28 and the secondary filter plate 29 and between the secondary filter plate 29 and the filter cloth 30.

The working principle and the working process of the utility model are as follows:

when the utility model is used, the flue gas inlet pipe 1 is connected with a designated interface, the exhaust fan 27 and the sampling pump 15 are started to enable flue gas to enter the filtering mechanism 2, dust in the flue gas is filtered to the greatest extent under the action of the primary filter plate 28, the secondary filter plate 29 and the filter cloth 30, the flue gas after dust filtration enters the spiral pipe 5 in the heat supplementing chamber 4, the spiral pipe 5 increases the circulating time of the flue gas in the heat supplementing chamber 4, the temperature of the flue gas is maintained at a high temperature state by absorbing heat emitted by a heat transfer medium, and the moisture in the flue gas is prevented from condensing.

The flue gas after the temperature rise sequentially enters the first condenser 11 and the second condenser 13, the first condenser 11 and the second condenser 13 carry out quick cooling on the high-temperature flue gas to enable moisture in the flue gas to be condensed and fall into the condensers, condensed water is discharged through the peristaltic pump a12 and the peristaltic pump b14, then the dry flue gas obtained by descending under the action of the sampling pump 15 is sent into the detection chamber 17 to be detected by the flue gas detector 16 to judge whether the flue gas meets the discharge standard, the flue gas opening electromagnetic valve a20 meeting the discharge standard is directly discharged through the smoke exhaust pipe 19, the electromagnetic valve a20 is closed when the flue gas not meeting the discharge standard is opened, and the electromagnetic valve b22 is sent into the purification device 23 to be washed and then discharged through the exhaust port 24.

Claims

1. The utility model provides a boiler flue gas detection device, includes flue gas intake pipe (1), flue gas intake pipe (1) are connected with filtering mechanism (2), its characterized in that, filtering mechanism (2) are linked together in proper order through the pipeline and are had moisturizing room (4), first condenser (11), second condenser (13) and detection room (17), upper end and the lower extreme of moisturizing room (4) lateral wall have opened water inlet and delivery port respectively, moisturizing room (4) correspond water inlet and delivery port position and have heating chamber (7) through the pipeline intercommunication respectively;

the flue gas detection device is characterized in that a flue gas detector (16) is arranged in the detection chamber (17), a flue gas outlet of the detection chamber (17) is connected with a three-way joint (18) through a pipeline, the other two ends of the three-way joint (18) are respectively connected with a flue gas discharge pipe (19) and a purification pipe (21), the purification pipe (21) is communicated with a purification device (23), and a purifying agent is filled in the purification device (23).

2. The boiler flue gas detection device according to claim 1, wherein a spiral tube (5) is arranged in the heat supplementing chamber (4), one end of the spiral tube (5) is communicated with the filtering mechanism (2), the other end of the spiral tube is communicated with the first condenser (11), and heat preservation layers (3) are wrapped outside a communicating pipeline between the filtering mechanism (2) and the spiral tube (5) and a communicating pipeline between the spiral tube (5) and the first condenser (11).

3. The boiler flue gas detection device according to claim 1, wherein a circulating pump (6) is arranged on a pipeline for communicating a water inlet of the heat supplementing chamber (4) with the heating chamber (7), and a stop valve (10) is arranged on a pipeline for communicating a water outlet of the heat supplementing chamber (4) with the heating chamber (7); a plurality of partition boards (8) are arranged in the heating chamber (7) in a staggered mode, S-shaped channels are formed in the heating chamber (7) by the partition boards (9), and one end of each partition board (9) is fixedly connected with the inner wall of the heating chamber (7).

4. A boiler flue gas detection device according to claim 3, wherein an electric heating tube (9) is arranged between two adjacent partition plates (8), and one end of the electric heating tube (9) is fixedly connected with the inner wall of the heating chamber (7).

5. A boiler flue gas detection device according to any one of claims 1 to 4, wherein the filtering mechanism (2) comprises a housing, an air inlet (25) and an air outlet (26) are formed in opposite side walls of the housing, an exhaust fan (27) is arranged at a position of the housing corresponding to the air outlet (26), and the exhaust fan (27) is connected with the side walls of the housing; the inside of the shell is provided with a primary filter plate (28), a secondary filter plate (29) and a filter cloth (30) in sequence according to the flow direction of smoke inlet, and the primary filter plate (28), the secondary filter plate (29) and the filter cloth (30) are fixedly connected with the inner wall of the shell.

6. A boiler flue gas detection device according to claim 5, wherein the filter particle diameters of the primary filter plate (28), the secondary filter plate (29) and the filter cloth (30) are gradually reduced; a cleaning opening (31) is formed in the side wall of the shell, close to the bottom, and the cleaning opening (31) is located between the air inlet (25) and the primary filter plate (28).

7. A boiler flue gas detection device according to any one of claims 1 to 4, wherein the bottom of the first condenser (11) is connected with a peristaltic pump a (12) through a pipe, and the bottom of the second condenser (13) is connected with a peristaltic pump b (14) through a pipe.

8. A boiler flue gas detection device according to claim 7, characterized in that the second condenser (13) is provided with a sampling pump (15) in a conduit communicating with the detection chamber (17).

9. A boiler flue gas detection device according to claim 8, wherein the flue gas detector (16) penetrates through the side wall of the detection chamber (17), the detection head of the flue gas detector (16) is located in the detection chamber (17), and the display mechanism of the flue gas detector (16) is located outside the detection chamber (17).

10. A boiler flue gas detection device according to claim 9, wherein the flue gas exhaust pipe (19) is provided with a solenoid valve a (20), and the purifying pipe (21) is provided with a solenoid valve b (22); one end of the purifying pipe (21) far away from the three-way joint (18) stretches into the bottom of the purifying device (23), and an exhaust port (24) is formed in the top of the purifying device (23).