Biomass boiler flue gas detection device

Abstract

The application discloses a biomass boiler flue gas detection device and belongs to the field of boiler flue gas detection. The device comprises a shell, a detection probe arranged in the shell, a guide rod horizontally and fixedly arranged in the shell, a mounting plate slidably arranged on the guide rod, and a bottom wall of the mounting plate being perpendicular to the shell. The detection probe is in two groups and symmetrically arranged on the side walls on the same side of the mounting plate. An air inlet pipe matched with the detection probe is fixedly arranged on the top wall of the shell. A driving mechanism is arranged in the shell to drive the mounting plate to move along the guide rod. The detection probe is arranged on the side walls on the opposite sides of the mounting plate. The output data of the two groups of detection probes are compared and cross-verified. When a single detection probe fails, the abnormal data can be identified and isolated, reliable readings can be continuously provided by the system, the detection error caused by single-point failure can be effectively reduced, and the data reliability and the stability of the detection device are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of boiler flue gas detection, more particularly to a biomass boiler flue gas detection device. BACKGROUND

[0002] The biomass boiler is a boiler equipment that uses biomass energy such as wood chips, straw, rice husk, etc. as fuel to generate heat energy for power generation, heating or industrial production. Its core feature is high environmental protection, wide fuel sources, and can realize the resource utilization of waste. Because it uses biomass fuel with high environmental protection compared to other fuel boilers, its application is becoming more and more widespread in an environment where environmental awareness is constantly improving. During the operation of the boiler, flue gas is generated and needs to be discharged. Detecting the flue gas discharged by the boiler can help reduce harmful substance emissions, improve boiler efficiency, and protect the environment.

[0003] The key to high-precision component detection of biomass boiler flue gas is effective particle purification of the flue gas. The current common pre-filtering scheme has limited interception capability for sub-micron fine particles, and this part of the particulate matter will penetrate the filter medium and pollute the downstream sensor, directly leading to a decrease in detection accuracy.

[0004] Therefore, a biomass boiler flue gas detection device is proposed. SUMMARY

[0005] The detection device can improve the detection accuracy.

[0006] To solve the above problems, the present application adopts the following technical scheme.

[0007] A biomass boiler flue gas detection device, comprising a shell, a detection probe is arranged in the shell;

[0008] A guide rod is horizontally fixedly installed in the shell, and a mounting plate is slidably sleeved on the guide rod, and the mounting plate is perpendicular to the inner bottom wall of the shell;

[0009] The detection probe is two groups, and the two groups of detection probes are symmetrically arranged on the side wall of the same side of the mounting plate;

[0010] An air inlet pipe matched with the detection probe is fixedly inserted on the top wall of the shell;

[0011] And a driving mechanism for driving the mounting plate to move along the guide rod is arranged in the shell;

[0012] Two boxes are symmetrically fixedly installed on the inner bottom wall of the shell, and a socket matched with the detection probe is formed on the side wall of the adjacent side of the two boxes;

[0013] Each chamber has a water tank fixedly installed on its bottom wall, which contains cleaning fluid. A conduit is vertically fixedly inserted into the top wall of the water tank, with the top end of the conduit extending into the chamber. A nozzle that works with the detection probe is fixedly installed at the top end of the conduit.

[0014] Furthermore, the casing is equipped with a pressurization mechanism for pressurizing the water tank.

[0015] Furthermore, the drive mechanism includes a reciprocating screw rotatably mounted on the inner wall of the housing, a slider threaded onto the reciprocating screw, a mounting plate fixedly sleeved on the slider, and a motor whose output end is fixedly connected to the shaft of the reciprocating screw fixedly mounted inside the housing.

[0016] Furthermore, the pressurization mechanism includes a first elastic airbag fixedly installed on the inner side wall of the tank. An air inlet valve and an air outlet valve are embedded in the side wall of the first elastic airbag. The input end of the air inlet valve passes through the housing and communicates with the outside. The output end of the air outlet valve extends to the top wall of the water tank. A sleeve fitted around the detection probe is fixedly installed on the side wall of the mounting plate.

[0017] Furthermore, the sleeve has a cavity, the inner top wall of the sleeve has an air hole communicating with the cavity, and the box is equipped with an air supply mechanism for supplying air to the cavity.

[0018] Furthermore, the air supply mechanism includes a second elastic airbag fixedly installed on the side wall of the first elastic airbag, wherein the elastic coefficient of the first elastic airbag is smaller than that of the second elastic airbag.

[0019] The second elastic airbag is located between the first elastic airbag and the sleeve. An air inlet communicating with the outside is provided on the side wall of the cavity, and the output end of the second elastic airbag is matched with the air inlet.

[0020] Furthermore, an elastic rope is fixedly installed in the air hole, and a baffle block is fixedly installed on the elastic rope.

[0021] Furthermore, an elastic membrane is fixedly installed in the socket, and a slotted socket with a straight line is opened on the elastic membrane.

[0022] Furthermore, both the first and second elastic airbags are made of metal bellows.

[0023] Furthermore, a one-way valve with its output end extending into the water tank is fixedly embedded on the inner bottom wall of the tank, and an isolation net is fixedly installed inside the water tank, with the conduit and the one-way valve located on both sides of the isolation net.

[0024] Furthermore, the inner diameter of the sleeve gradually increases as it moves axially away from the mounting plate.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] (1) This solution sets detection probes on the sidewalls of opposite sides of the mounting plate and cross-verifies by comparing the output data of the two sets of detection probes. This not only identifies and isolates abnormal data when a single detection probe fails, ensuring that the system continuously provides reliable readings, but also effectively reduces detection errors caused by single-point failures, thereby ensuring data reliability and the stability of the detection device.

[0027] (2) This solution uses the cooperation between the pressurizing mechanism and the nozzle to drive the mounting plate to reciprocate along the guide rod. When the mounting plate is in contact with the corresponding side wall of the box, the pressurizing mechanism pressurizes the corresponding water tank. At this time, the cleaning liquid in the water tank is squeezed downward and flows along the guide tube, and finally discharged through the nozzle. The cleaning liquid sprayed from the nozzle sprays onto the surface of the detection probe inserted into the box, thereby washing away the fine particles attached to the surface of the detection probe, ensuring that the detection probe can directly contact the flue gas and detect the flue gas components, thus improving the detection accuracy.

[0028] (3) By setting a second elastic air bag and air hole, this solution can blow air onto the surface of the detection probe through the air hole after cleaning the detection probe, and dry the liquid remaining on the detection probe. Thus, when the detection probe is exposed in the housing again to detect the flue gas composition, the probability of impurities in the flue gas adhering to the surface of the detection probe is reduced, which plays a role in ensuring the detection accuracy. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a front cross-sectional view of the present invention;

[0031] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A;

[0032] Figure 4 For the present invention Figure 2 Enlarged structural diagram at point B;

[0033] Figure 5 For the present invention Figure 3 Enlarged structural diagram at point C;

[0034] Figure 6 This is a schematic diagram of the combined structure of the elastic membrane and the insertion hole of the present invention;

[0035] Figure 7 This is a cross-sectional view of the sleeve of the present invention.

[0036] Explanation of the labels in the diagram:

[0037] 1. Housing; 2. Detection probe; 3. Guide rod; 4. Mounting plate; 5. Air inlet pipe; 6. Box body; 7. Inlet; 8. Water tank; 9. Conduit; 10. Nozzle; 11. Reciprocating screw; 12. Slider; 13. Motor; 14. First elastic airbag; 15. Air inlet valve; 16. Exhaust valve; 17. Sleeve; 18. Cavity; 19. Air hole; 20. Second elastic airbag; 21. Air inlet; 22. Elastic rope; 23. Baffle block; 24. Elastic membrane; 25. Inlet; 26. Spring; 27. One-way valve; 28. Isolation net. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0039] Example 1:

[0040] Please see Figures 1 to 7 A biomass boiler flue gas detection device includes a housing 1, a pressure relief hole is provided on the side wall of the housing 1, a front-end filter and an air pump are fixedly installed on the top wall of the housing 1, the output end of the front-end filter is connected to the input end of the air pump, and a detection probe 2 is provided inside the housing 1.

[0041] A guide rod 3 is horizontally fixedly installed inside the housing 1, and an mounting plate 4 is slidably sleeved on the guide rod 3. The mounting plate 4 is perpendicular to the bottom wall of the housing 1.

[0042] There are two sets of detection probes 2, and the two sets of detection probes 2 are symmetrically arranged on the side wall of the same side of the mounting plate 4.

[0043] An air inlet pipe 5 that mates with the detection probe 2 is fixedly inserted into the top wall of the housing 1; and the input end of the air inlet pipe 5 is connected to the output end of the air pump, and the output end of the air inlet pipe 5 extends into the housing 1.

[0044] Furthermore, the housing 1 is equipped with a drive mechanism for driving the mounting plate 4 to move along the guide rod 3;

[0045] First, move the device around the boiler, then extend the inlet of the front-end filter into the boiler's chimney.

[0046] First, start the air pump so that the flue gas passes through the front-end filter for preliminary filtration;

[0047] Subsequently, the air pump pumps the filtered flue gas into the air inlet pipe 5;

[0048] Finally, the flue gas enters the housing 1 through the inlet pipe 5, where the detection probe 2 inside the housing 1 performs component analysis.

[0049] Furthermore, by comparing the output data of the two sets of detection probes for cross-validation, abnormal data can be identified and isolated when a single detection probe fails, ensuring that the system continuously provides reliable readings. This also effectively reduces detection errors caused by single-point failures, thereby ensuring data reliability and the stability of the detection device.

[0050] Two boxes 6 are symmetrically fixed on the inner bottom wall of the housing 1. The side walls of the two boxes 6 on adjacent sides are provided with sockets 7 that cooperate with the detection probe 2.

[0051] Each tank 6 has a water tank 8 fixedly installed on its bottom wall. The water tank 8 contains cleaning fluid, which is anhydrous ethanol. A conduit 9 is vertically fixedly inserted into the top wall of the water tank 8. The top end of the conduit 9 extends into the tank 6, and a nozzle 10 that cooperates with the detection probe 2 is fixedly installed at the top end of the conduit 9. The distance between the bottom end of the conduit 9 and the bottom wall of the water tank 8 is 1-2 mm, and the bottom end of the conduit 9 is below the liquid surface in the water tank 8.

[0052] Furthermore, the housing 1 is equipped with a pressurization mechanism for pressurizing the water tank 8.

[0053] The detection probe 2 is used to detect the gas components in the flue gas, which is existing technology and will not be described in detail here.

[0054] During the testing process, the drive mechanism drives the mounting plate 4 to reciprocate along the guide rod 3. When the mounting plate 4 is in contact with the side wall of the corresponding housing 6, the pressurizing mechanism pressurizes the corresponding water tank 8. At this time, the cleaning fluid in the water tank 8 is squeezed downward and flows along the conduit 9, and finally discharged through the nozzle 10. The cleaning fluid sprayed from the nozzle 10 sprays onto the surface of the detection probe 2 inserted into the housing 6, thereby washing away the fine particles attached to the surface of the detection probe 2, ensuring that the detection probe 2 can directly contact the flue gas and detect the flue gas components, thus improving the detection accuracy.

[0055] like Figure 2 As shown, the drive mechanism includes a reciprocating screw 11 rotatably mounted on the inner wall of the housing 1, a slider 12 threaded onto the reciprocating screw 11, a mounting plate 4 fixedly sleeved on the slider 12, and a motor 13 whose output end is fixedly connected to the rotating shaft of the reciprocating screw 11 is fixedly installed inside the housing 1; wherein, during the process of the motor 13 driving the reciprocating screw 11 to rotate, the slider 12 reciprocates along the reciprocating screw 11, which is the prior art and will not be described in detail.

[0056] like Figure 3As shown, the pressurization mechanism includes a first elastic airbag 14 fixedly installed on the inner side wall of the housing 6. An air inlet valve 15 and an air outlet valve 16 are embedded in the side wall of the first elastic airbag 14. The input end of the air inlet valve 15 passes through the housing 1 and communicates with the outside. The output end of the air outlet valve 16 extends to the inner top wall of the water tank 8. A sleeve 17 is fixedly installed on the side wall of the mounting plate 4 and sleeved on the outside of the detection probe 2.

[0057] As the mounting plate 4 gradually approaches the housing 6, the sleeve 17 is gradually inserted into the socket 7. At this time, under the action of the sleeve 17, the housing 6 is isolated from the shell 1.

[0058] Then, the mounting plate 4 continues to drive the sleeve 17 to extend into the box 6. During this process, the sleeve 17 contacts and squeezes the first elastic airbag 14. At this time, the first elastic airbag 14 discharges gas into the corresponding water tank 8 through the exhaust valve 16. At this time, the cleaning liquid in the water tank 8 is squeezed into the conduit 9 by the gas, thereby pressurizing the water tank 8.

[0059] like Figure 5 As shown, a cavity 18 is provided on the sleeve 17, and an air hole 19 communicating with the cavity 18 is provided on the inner top wall of the sleeve 17. An air supply mechanism for supplying air to the cavity 18 is provided inside the housing 6.

[0060] The air supply mechanism includes a second elastic airbag 20 fixedly installed on the side wall of the first elastic airbag 14, wherein the elastic coefficient of the first elastic airbag 14 is smaller than the elastic coefficient of the second elastic airbag 20.

[0061] The second elastic airbag 20 is located between the first elastic airbag 14 and the sleeve 17. An air inlet 21 communicating with the outside is provided on the side wall of the cavity 18, and the output end of the second elastic airbag 20 is matched with the air inlet 21. When the sleeve 17 is in contact with the side wall of the second elastic airbag 20, the air inlet 21 is connected to the output end of the second elastic airbag 20.

[0062] Since the elastic coefficient of the first elastic airbag 14 is smaller than that of the second elastic airbag 20, when the sleeve 17 applies pressure to the second elastic airbag 20, the first elastic airbag 14 deforms first. The second elastic airbag 20 only begins to deform when the first elastic airbag 14 is completely compressed. That is, when the nozzle 10 stops spraying the cleaning liquid, the air hole 19 starts to spray air, which can dry the detection probe 2 and reduce the probability that impurities in the flue gas will re-adhere to the surface of the detection probe 2.

[0063] like Figure 5As shown, an elastic rope 22 is fixedly installed in the air hole 19, and a baffle block 23 is fixedly installed on the elastic rope 22. When the air hole 19 exhausts air outward, the baffle block is impacted and shaken by the airflow, thereby changing the airflow direction, increasing the contact area between the airflow and the detection probe 2, and improving the drying effect on the detection probe 2.

[0064] like Figure 4 As shown, an elastic membrane 24 is fixedly installed in the socket 7. A slotted hole 25 is formed on the elastic membrane 24. When the detection probe 2 passes through the slotted hole 25, the edge of the hole 25 moves along the surface of the detection probe 2, thereby scraping the surface of the detection probe 2 and achieving the function of preliminary cleaning of the detection probe 2, which facilitates subsequent cleaning.

[0065] like Figure 3 As shown, both the first elastic airbag 14 and the second elastic airbag 20 are metal bellows, and each metal bellows is equipped with a spring 26. The two ends of the spring 26 provide axial support for the bellows, ensuring that it can automatically return to the extended state without external pressure.

[0066] like Figure 2 As shown, a one-way valve 27 with its output end extending into the water tank 8 is fixedly embedded on the inner bottom wall of the housing 6. An isolation net 28 is fixedly installed inside the water tank 8. The conduit 9 and the one-way valve 27 are located on both sides of the isolation net 28, respectively. Therefore, the cleaning fluid dripping from the detection probe 2 will flow back into the water tank 8 through the one-way valve 27. Under the action of the isolation net 28, the cleaning fluid can be separated from impurities, thereby recycling the cleaning fluid and saving costs.

[0067] like Figure 7 As shown, the inner diameter of the sleeve 17 gradually increases as it moves away from the mounting plate 4 along the axial direction, forming a funnel-shaped structure. This facilitates the timely flow of liquid dripping from the surface of the detection probe 2 into the housing 6 for recycling.

[0068] Instructions for use: First, move the device around the boiler, then extend the inlet of the front filter into the boiler's chimney.

[0069] Then start the air pump to make the flue gas pass through the front-end filter for preliminary filtration;

[0070] Subsequently, the air pump pumps the filtered flue gas into the air inlet pipe 5;

[0071] Finally, the flue gas enters the housing 1 through the inlet pipe 5, where the detection probe 2 inside the housing 1 performs component analysis.

[0072] Furthermore, by comparing the output data of the two sets of detection probes for cross-validation, abnormal data can be identified and isolated when a single detection probe fails, ensuring that the system continuously provides reliable readings. This also effectively reduces detection errors caused by single-point failures, thereby ensuring data reliability and the stability of the detection device.

[0073] During the testing process, the drive mechanism drives the mounting plate 4 to reciprocate along the guide rod 3. When the mounting plate 4 is in contact with the side wall of the corresponding housing 6, the pressurizing mechanism pressurizes the corresponding water tank 8. At this time, the cleaning fluid in the water tank 8 is squeezed downward and flows along the conduit 9, and finally discharged through the nozzle 10. The cleaning fluid sprayed from the nozzle 10 sprays onto the surface of the detection probe 2 inserted into the housing 6, thereby washing away the fine particles attached to the surface of the detection probe 2, ensuring that the detection probe 2 can directly contact the flue gas and detect the flue gas components, thus improving the detection accuracy.

[0074] Since the elastic coefficient of the first elastic airbag 14 is smaller than that of the second elastic airbag 20, when the sleeve 17 applies pressure to the second elastic airbag 20, the first elastic airbag 14 deforms first. The second elastic airbag 20 only begins to deform when the first elastic airbag 14 is completely compressed. That is, when the nozzle 10 stops spraying the cleaning liquid, the air hole 19 starts to spray air, which can dry the detection probe 2 and reduce the probability that impurities in the flue gas will re-adhere to the surface of the detection probe 2.

[0075] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A biomass boiler flue gas detection device, comprising a housing (1), wherein a detection probe (2) is provided inside the housing (1); Its features are: A guide rod (3) is horizontally fixedly installed inside the housing (1), and an mounting plate (4) is slidably sleeved on the guide rod (3). The mounting plate (4) is perpendicular to the bottom wall of the housing (1). The detection probe (2) consists of two sets, and the two sets of detection probes (2) are symmetrically arranged on the side wall of the same side of the mounting plate (4); An air inlet pipe (5) that cooperates with the detection probe (2) is fixedly inserted on the top wall of the housing (1). Furthermore, the housing (1) is provided with a drive mechanism for driving the mounting plate (4) to move along the guide rod (3); Two boxes (6) are symmetrically fixed on the inner bottom wall of the housing (1). The side walls of the two boxes (6) on adjacent sides are provided with a socket (7) that cooperates with the detection probe (2). Each of the boxes (6) has a water tank (8) fixedly installed on its bottom wall. The water tank (8) contains cleaning fluid. A conduit (9) is vertically fixedly inserted on the top wall of the water tank (8). The top end of the conduit (9) extends into the box (6), and a nozzle (10) that cooperates with the detection probe (2) is fixedly installed on the top end of the conduit (9). Furthermore, the housing (1) is equipped with a pressurizing mechanism for pressurizing the water tank (8); The pressurization mechanism includes a first elastic airbag (14) fixedly installed on the inner side wall of the housing (6). An air inlet valve (15) and an air outlet valve (16) are embedded on the side wall of the first elastic airbag (14). The input end of the air inlet valve (15) passes through the housing (1) and communicates with the outside. The output end of the air outlet valve (16) extends to the inner top wall of the water tank (8). A sleeve (17) is fixedly installed on the side wall of the mounting plate (4) and sleeved outside the detection probe (2). The sleeve (17) has a cavity (18) and an air hole (19) communicating with the cavity (18) is provided on the inner top wall of the sleeve (17). The box (6) is provided with an air supply mechanism for supplying air to the cavity (18). The air supply mechanism includes a second elastic airbag (20) fixedly installed on the side wall of the first elastic airbag (14). The elastic coefficient of the first elastic airbag (14) is smaller than the elastic coefficient of the second elastic airbag (20). The second elastic airbag (20) is located between the first elastic airbag (14) and the sleeve (17). An air inlet (21) communicating with the outside is provided on the side wall of the cavity (18), and the output end of the second elastic airbag (20) is matched with the air inlet (21). A one-way valve (27) with its output end extending into the water tank (8) is fixedly embedded on the inner bottom wall of the box (6). An isolation net (28) is fixedly installed inside the water tank (8). The conduit (9) and the one-way valve (27) are located on both sides of the isolation net (28).

2. The biomass boiler flue gas detection device according to claim 1, characterized in that: The drive mechanism includes a reciprocating screw (11) rotatably mounted on the inner wall of the housing (1), a slider (12) threadedly mounted on the reciprocating screw (11), a mounting plate (4) fixedly sleeved on the slider (12), and a motor (13) whose output end is fixedly connected to the rotating shaft of the reciprocating screw (11) is fixedly mounted inside the housing (1).

3. The biomass boiler flue gas detection device according to claim 1, characterized in that: An elastic rope (22) is fixedly installed in the air hole (19), and a baffle (23) is fixedly installed on the elastic rope (22).

4. The biomass boiler flue gas detection device according to claim 1, characterized in that: An elastic membrane (24) is fixedly installed in the socket (7), and a slotted socket (25) with a straight line is opened on the elastic membrane (24).

5. The biomass boiler flue gas detection device according to claim 1, characterized in that: Both the first elastic airbag (14) and the second elastic airbag (20) are metal bellows.

6. The biomass boiler flue gas detection device according to claim 1, characterized in that: The inner diameter of the sleeve (17) gradually increases as it moves axially away from the mounting plate (4).

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